INSTALLATION MANUAL

EKHBH016BB3V3EKHBH016BB6V3EKHBH016BB6WNEKHBH016BB6T1EKHBH016BB9WNEKHBH016BB9T1

EKHBX016BB3V3EKHBX016BB6V3EKHBX016BB6WNEKHBX016BB6T1EKHBX016BB9WN

Indoor unit for air to water heat pump system

35

48

142 101

502

23

45

48 39

9636

1

1-1/4

1-1/4" MBSP

895

922

830

469

260

B B

T T

≥350

300

500

≥

2x2x1x 1x 1x1 2 3 4 5

30°

90°

21

3

4

1

2

3

4

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kin

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İSİ

01ar

e in

confo

rmity

with

the

follow

ing s

tand

ard(

s) o

r oth

er n

orm

ative

doc

umen

t(s),

prov

ided

that

thes

e ar

e us

ed in

acc

orda

nce

with

our

instru

ction

s:02

der/d

en fo

lgend

en N

orm

(en)

ode

r eine

m a

nder

en N

orm

doku

men

t ode

r -do

kum

ente

n en

tspric

ht/e

ntsp

rech

en, u

nter

der

Vor

auss

etzu

ng,

daß

sie g

emäß

uns

eren

Anw

eisun

gen

einge

setzt

wer

den:

03so

nt co

nform

es à

la/a

ux n

orm

e(s)

ou

autre

(s) d

ocum

ent(s

) nor

mat

if(s)

, pou

r aut

ant q

u'ils

soien

t utili

sés c

onfor

mém

ent à

nos

instr

uctio

ns:

04co

nform

de vo

lgend

e nor

m(e

n) of

één o

f mee

r and

ere b

inden

de do

cum

ente

n zijn

, op v

oorw

aard

e dat

ze w

orde

n geb

ruikt

over

eenk

omsti

gon

ze in

struc

ties:

05es

tán

en co

nform

idad

con

la(s)

sigu

iente

(s) n

orm

a(s)

u o

tro(s

) doc

umen

to(s

) nor

mat

ivo(s

), sie

mpr

e qu

e se

an u

tiliza

dos d

e ac

uerd

o co

nnu

estra

s ins

trucc

iones

:06

sono

con

form

i al(i)

seg

uent

e(i)

stand

ard(

s) o

altr

o(i)

docu

men

to(i)

a c

arat

tere

nor

mat

ivo, a

pat

to c

he v

enga

no u

sati

in co

nform

ità a

lleno

stre

istru

zioni:

07›ӷ

È Û‡

Ìʈӷ

ÌÂ

ÙÔ(·

) ·Î

fiÏÔ˘

ıÔ(·

) Ú

fiÙ˘

Ô(·)

‹ ¿

ÏÏÔ

¤ÁÁÚ

·ÊÔ(

·) Î

·ÓÔÓ

ÈÛÌÒ

Ó, ˘

fi Ù

ËÓ

ÚÔ¸

fiıÂÛ

Ë fiÙ

È ¯Ú

ËÛÈÌÔ

ÔÈÔ‡

ÓÙ·È

Û‡ÌÊ

ˆÓ·

ÌÂ

ÙȘ

Ô‰ËÁ

›Â˜

Ì·˜:

08es

tão

em c

onfor

mida

de c

om a

(s) s

eguin

te(s

) nor

ma(

s) o

u ou

tro(s

) doc

umen

to(s

) nor

mat

ivo(s

), de

sde

que

este

s se

jam u

tiliza

dos

deac

ordo

com

as n

ossa

s ins

truçõ

es:

09со

отве

тств

уют

след

ующ

им с

танд

арта

м ил

и др

угим

нор

мати

вны

м до

куме

нтам

, при

усл

овии

их

испо

льзо

вани

я со

глас

но н

ашим

инст

рукц

иям:

10ov

erho

lder

følge

nde

stand

ard(

er)

eller

and

et/a

ndre

ret

nings

given

de d

okum

ent(e

r), f

orud

sat

at d

isse

anve

ndes

i he

nhold

til

vore

instru

kser

:11

resp

ektiv

e ut

rustn

ing ä

r utfö

rd i

över

enss

täm

mels

e m

ed o

ch fö

ljer f

öljan

de s

tand

ard(

er) e

ller a

ndra

nor

mgiv

ande

dok

umen

t, un

der

föru

tsättn

ing a

tt an

vänd

ning

sker

i öve

rens

stäm

mels

e m

ed vå

ra in

struk

tione

r:12

resp

ektiv

e ut

styr e

r i o

vere

nsste

mm

else

med

følge

nde

stand

ard(

er) e

ller a

ndre

nor

mgiv

ende

dok

umen

t(er),

und

er fo

rutss

etnin

g av

at

disse

bru

kes i

hen

hold

til vå

re in

struk

ser:

13va

staav

at s

eura

avien

sta

ndar

dien

ja m

uiden

ohje

ellist

en d

okum

enttie

n va

atim

uksia

ede

llyttä

en,

että

niitä

käy

tetä

än o

hjeide

mm

emu

kaise

sti:

14za

pře

dpok

ladu

, že

jsou

vyu

žívá

ny v

sou

ladu

s n

ašim

i pok

yny,

odp

ovíd

ají n

ásle

dujíc

ím n

orm

ám n

ebo

norm

ativ

ním

dok

umen

tům

:15

u sk

ladu

sa

slije

deći

m s

tand

ardo

m(im

a) il

i dru

gim

nor

mat

ivni

m d

okum

ento

m(im

a), u

z uv

jet d

a se

oni

kor

iste

u s

klad

u s

naši

m u

puta

ma:

16m

egfe

leln

ek a

z al

ábbi

sza

bván

y(ok

)nak

vag

y eg

yéb

irány

adó

doku

men

tum

(ok)

nak,

ha

azok

at e

lőírá

s sz

erin

t has

znál

ják:

17sp

ełni

ają

wym

ogi

nast

ępuj

ącyc

h no

rm i

inn

ych

doku

men

tów

nor

mal

izac

yjny

ch,

pod

war

unki

em ż

e uż

ywan

e są

zgo

dnie

z n

aszy

mi

inst

rukc

jam

i:18

sunt

în c

onfo

rmita

te c

u ur

măt

orul

(urm

ătoa

rele

) sta

ndar

d(e)

sau

alt(

e) d

ocum

ent(e

) nor

mat

iv(e

), cu

con

diţia

ca

aces

tea

să fi

e ut

ilizat

e în

conf

orm

itate

cu

inst

rucţ

iuni

le n

oast

re19

skla

dni z

nas

ledn

jimi s

tand

ardi

in d

rugi

mi n

orm

ativ

i, po

d po

goje

m, d

a se

upo

rabl

jajo

v s

klad

u z

naši

mi n

avod

ili:20

on v

asta

vuse

s jä

rgm

is(t)

e st

anda

rdi(t

e)ga

või

teis

te n

orm

atiiv

sete

dok

umen

tideg

a, k

ui n

eid

kasu

tata

kse

vast

aval

t mei

e ju

hend

itele

:21

съот

ветс

тват

на

след

ните

ста

ндар

ти и

ли д

руги

нор

мати

вни

доку

мент

и, п

ри у

слов

ие,

че с

е из

полз

ват

съгл

асно

наш

ите

инст

рукц

ии:

22at

itink

a že

mia

u nu

rody

tus

stan

dartu

s ir

(arb

a) k

itus

norm

iniu

s do

kum

entu

s su

sąl

yga,

kad

yra

nau

doja

mi p

agal

mūs

ų nu

rody

mus

:23

tad,

ja li

etot

i atb

ilsto

ši ra

žotā

ja n

orād

ījum

iem

, atb

ilst s

ekoj

ošie

m s

tand

artie

m u

n ci

tiem

nor

mat

īvie

m d

okum

entie

m:

24sú

v z

hode

s n

asle

dovn

ou(ý

mi)

norm

ou(a

mi)

aleb

o in

ým(i)

nor

mat

ívny

m(i)

dok

umen

tom

(am

i), z

a pr

edpo

klad

u, ž

e sa

pou

žíva

jú v

súl

ade

s na

šim

náv

odom

:25

ürün

ün, t

alim

atla

rımız

a gö

re k

ulla

nılm

ası k

oşul

uyla

aşa

ğıda

ki s

tand

artla

r ve

norm

bel

irten

bel

gele

rle u

yum

ludu

r:

01Di

recti

ves,

as a

men

ded.

02Di

rekti

ven,

gem

äß Ä

nder

ung.

03Di

recti

ves,

telle

s que

mod

ifiées

.04

Rich

tlijne

n, zo

als g

eam

ende

erd.

05Di

recti

vas,

segú

n lo

enm

enda

do.

06Di

rettiv

e, co

me

da m

odific

a.07

√‰Ë

ÁÈÒv, fi

ˆ˜

¤¯Ô˘

Ó ÙÚ

ÔÔ

ÔÈËı

›.

08Di

recti

vas,

confo

rme

alter

ação

em

.09

Дире

ктив

со

всем

и по

прав

ками

.

10Di

rekti

ver,

med

sene

re æ

ndrin

ger.

11Di

rekti

v, m

ed fö

reta

gna

ändr

ingar

.12

Dire

ktive

r, m

ed fo

reta

tte e

ndrin

ger.

13Di

rektiiv

ejä, s

ellais

ina ku

in ne

ovat

muute

ttuina

.14

v pl

atné

m z

nění

.15

Smje

rnic

e, k

ako

je iz

mije

njen

o.16

irány

elv(

ek) é

s m

ódos

ítása

ik re

ndel

kezé

seit.

17z

późn

iejs

zym

i pop

raw

kam

i.18

Dire

ctiv

elor

, cu

amen

dam

ente

le re

spec

tive.

19D

irekt

ive

z vs

emi s

prem

emba

mi.

20D

irekt

iivid

koo

s m

uuda

tust

ega.

21Ди

рект

иви,

с т

ехни

те и

змен

ения

.22

Dire

ktyv

ose

su p

apild

ymai

s.23

Dire

ktīv

ās u

n to

pap

ildin

ājum

os.

24Sm

erni

ce, v

pla

tnom

zne

ní.

25D

eğiş

tirilm

iş h

alle

riyle

Yön

etm

elik

ler.

01fol

lowing

the

prov

ision

s of:

02ge

mäß

den

Vors

chrif

ten

der:

03co

nform

émen

t aux

stipu

lation

s des

:04

over

eenk

omsti

g de

bep

aling

en va

n:05

siguie

ndo

las d

ispos

icion

es d

e:06

seco

ndo

le pr

escr

izion

i per

:07

ÌÂ Ù

‹ÚËÛ

Ë Ùˆ

v ‰È·Ù

¿Íˆ

v Ùˆ

v:

08de

aco

rdo

com

o p

revis

to e

m:

09в

соот

ветс

твии

с п

олож

ения

ми:

10un

der i

agtta

gelse

af b

este

mm

elser

ne i:

11en

ligt v

illkor

en i:

12git

t i he

nhold

til b

este

mm

elsen

e i:

13no

udat

taen

mää

räyk

siä:

14za

dod

ržen

í ust

anov

ení p

ředp

isu:

15pr

ema

odre

dbam

a:16

köve

ti a(z

):17

zgod

nie

z po

stan

owie

niam

i Dyr

ekty

w:

18în

urm

a pr

eved

erilo

r:

19ob

upo

štev

anju

dol

očb:

20va

stav

alt n

õuet

ele:

21сл

едва

йки

клау

зите

на:

22la

ikan

tis n

uost

atų,

pat

eiki

amų:

23ie

vēro

jot p

rasī

bas,

kas

not

eikt

as:

24od

ržia

vajú

c us

tano

veni

a:25

bunu

n ko

şulla

rına

uygu

n ol

arak

:

01

Note

*as

set o

ut in

<A> a

nd ju

dged

posit

ively

by <B

> ac

cordi

ng to

the

Certi

ficate

<C>.

02

Hinw

eis *

wie i

n der

<A> a

ufgefü

hrt u

nd vo

n <B>

posit

iv be

urtei

lt gem

äß Ze

rtifik

at <C

>.03

Re

marq

ue *

tel qu

e défi

ni da

ns <A

> et é

valué

posit

iveme

nt pa

r <B

> con

formé

ment

au C

ertifi

cat <

C>.

04

Beme

rk *

zoals

verm

eld in

<A> e

n pos

itief b

eoord

eeld

door

<B> o

veree

nkom

stig C

ertifi

caat

<C>.

05

Nota

*co

mo se

estab

lece e

n <A>

y es

valor

ado

posit

ivame

nte po

r <B>

de ac

uerdo

con e

l Ce

rtific

ado <

C>.

06

Nota

*de

linea

to ne

l <A>

e giu

dicato

posit

ivame

nte

da <B

> sec

ondo

il Ce

rtific

ato <C

>.07

™Ë

Ì›ˆ

ÛË *

fiˆ˜

ηıÔ

Ú›˙Â

Ù·È Û

ÙÔ <

A> Î

·È Î

Ú›ÓÂ

Ù·È ı

ÂÙÈο

·fi

ÙÔ <

B> Û

‡Ìʈ

Ó· Ì

 ÙÔ

¶ÈÛÙ

ÔÔÈË

ÙÈÎfi

<C>.

08

Nota

*tal

como

estab

elecid

o em

<A> e

com

o pare

cer

posit

ivo de

<B> d

e aco

rdo co

m o C

ertifi

cado

<C>.

09

Прим

ечан

ие *

как

указ

ано

в <A

> и

в со

отве

тств

ии с

по

лож

ител

ьны

м ре

шен

ием

<B>

согл

асно

Св

идет

ельс

тву <

C>.

10

Bemæ

rk *

som

anfør

t i <A

> og p

ositiv

t vurd

eret a

f <B>

i he

nhold

til C

ertifi

kat <

C>.

11

Infor

matio

n *en

ligt <

A> oc

h god

känts

av <B

> enli

gt Ce

r tifik

atet <

C>.

12

Merk

*so

m de

t frem

komm

er i <

A> og

gjen

nom

posit

iv be

dømm

else a

v <B>

ifølge

Ser

tifika

t <C>

.13

Hu

om *

jotka

on es

itetty

asiak

irjass

a <A>

ja jo

tka <B

> on

hyvä

ksyn

yt Se

rtifik

aatin

<C> m

ukais

esti.

14

Pozn

ámka

*ja

k by

lo u

vede

no v

<A>

a p

oziti

vně

zjiš

těno

<B>

v

soul

adu

s os

vědč

ením

<C>

.

15

Napo

men

a *

kako

je iz

lože

no u

<A>

i po

zitiv

no o

cije

njen

o od

st

rane

<B>

pre

ma

Certi

fikat

u <C

>.

16

Meg

jegy

zés

*a(

z) <

A> a

lapj

án, a

(z) <

B> ig

azol

ta a

meg

fele

lést

, a(

z) <

C> ta

núsí

tván

y sz

erin

t.

17

Uwag

a *

zgod

nie

z do

kum

enta

cją

<A>,

poz

ytyw

ną o

pini

ą <B

> i Ś

wia

dect

wem

<C>

.

18

Notă

*aş

a cu

m e

ste

stab

ilit în

<A>

şi a

prec

iat p

oziti

v de

<B>

în c

onfo

rmita

te c

u Ce

rtific

atul

<C>

.

19

Opo

mba

*ko

t je

dolo

čeno

v <

A> in

odo

bren

o s

stra

ni <

B> v

sk

ladu

s c

ertif

ikat

om <

C>.

20

Mär

kus

*na

gu o

n nä

idat

ud d

okum

endi

s <A

> ja

hea

ks

kiid

etud

<B>

järg

i vas

tava

lt se

rtifik

aadi

le <

C>.

21

Забе

лежк

а *ка

кто

е из

лож

ено

в <A

> и

оцен

ено

поло

жит

елно

от

<B>

съгл

асно

Cе

ртиф

икат

а <C>

.

22

Past

aba

*ka

ip n

usta

tyta

<A>

ir k

aip

teig

iam

ai n

uspr

ęsta

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CONTENTS Page

1. Definitions.................................................................................. 21.1. Meaning of warnings and symbols................................................. 21.2. Meaning of used terms .................................................................. 2

2. General safety precautions........................................................ 2

3. Introduction................................................................................ 33.1. General information........................................................................ 33.2. Scope of this manual ..................................................................... 43.3. Model identification ........................................................................ 43.4. Typical application examples.......................................................... 4

Application 1 .................................................................................. 4Application 2 .................................................................................. 5Application 3 .................................................................................. 6Application 4 .................................................................................. 6Application 5 .................................................................................. 7Application 6 .................................................................................. 9

4. Accessories ............................................................................... 94.1. Accessories supplied with the indoor unit ...................................... 9

5. Overview of the indoor unit...................................................... 105.1. Opening the indoor unit................................................................ 105.2. Main components......................................................................... 105.3. Switch box main components ...................................................... 115.4. Functional diagram....................................................................... 12

6. Installation of the indoor unit.................................................... 126.1. Selecting an installation location.................................................. 126.2. Dimensions and service space .................................................... 136.3. Inspecting, handling and unpacking the unit ................................ 136.4. Mounting the indoor unit .............................................................. 146.5. Installation of the EKHBDP drain pan kit

(only for EKHBX models) ............................................................. 146.6. Refrigerant pipework.................................................................... 146.7. Water pipework ............................................................................ 14

Checking the water circuit ............................................................ 146.8. General precautions concerning water circuit .............................. 15

Checking the water volume and expansion vesselpre-pressure................................................................................. 16Setting the pre-pressure of the expansion vessel ........................ 17Connecting the water circuit......................................................... 17

6.9. Charging water............................................................................. 176.10. Piping insulation........................................................................... 17

7. Electrical wiring work............................................................... 177.1. Precautions on electrical wiring work........................................... 177.2. Internal wiring - Parts table .......................................................... 187.3. System overview of field wiring.................................................... 18

Field wiring guidelines.................................................................. 19Connection of the indoor unit power supply andcommunication cable ................................................................... 19Connection of the backup heater power supply ........................... 20Connection of the thermostat cable ............................................. 20Connection of the valve control cables ........................................ 21Connection of the bottom plate heater......................................... 21Connection to a benefit kWh rate power supply........................... 21

7.4. Relocation of the digital controller................................................ 22Wiring specifications .................................................................... 22Mounting ...................................................................................... 22

8. Start-up and configuration ....................................................... 238.1. DIP switch settings overview........................................................ 238.2. Room thermostat installation configuration.................................. 238.3. Pump operation configuration ...................................................... 248.4. Domestic hot water tank installation configuration ....................... 248.5. Initial start-up at low outdoor ambient temperatures.................... 258.6. Pre-operation checks ................................................................... 25

Checks before initial start-up ....................................................... 258.7. Powering up the indoor unit ......................................................... 258.8. Setting the pump speed ............................................................... 268.9. Field settings................................................................................ 26

Procedure .................................................................................... 26Detailed description ..................................................................... 26

8.10. Field settings table ....................................................................... 39

9. Test run and final check........................................................... 439.1. Final check................................................................................... 439.2. Automatic test run ........................................................................ 439.3. Test run operation (manual) ......................................................... 43

Procedure .................................................................................... 439.4. Underfloor heating screed dry-out program................................. 43

Disclaimer .................................................................................... 43Field settings................................................................................ 43Getting started ............................................................................. 44

10. Maintenance and service......................................................... 4510.1. Maintenance activities.................................................................. 45

Cautions before obtaining maintenance and service ................... 45Opening the unit........................................................................... 45Maintenance and service ............................................................. 45

11. Troubleshooting ....................................................................... 4611.1. General guidelines ....................................................................... 4611.2. General symptoms....................................................................... 4611.3. Error codes .................................................................................. 48

12. Technical specifications ........................................................... 5012.1. General ........................................................................................ 5012.2. Electrical specifications................................................................ 50

Thank you for purchasing this indoor unit.

The original instructions are written in English. All other languagesare translations of the original instructions.

EKHBH016BB***EKHBX016BB*** Indoor unit for air to water heat pump system Installation manual

CAREFULLY READ THESE INSTRUCTIONS BEFOREINSTALLATION. THEY WILL TELL YOU HOW TO INSTALLAND HOW TO CONFIGURE THE UNIT PROPERLY.KEEP THIS MANUAL IN A HANDY PLACE FOR FUTUREREFERENCE.

THE UNIT DESCRIBED IN THIS MANUAL IS DESIGNEDFOR INDOOR INSTALLATION ONLY AND FOR AMBIENTTEMPERATURES RANGING 4°C~35°C.

Installation manual

1EKHBH/X016BB

Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

1. DEFINITIONS

1.1. Meaning of warnings and symbols

Warnings in this manual are classified according to their severity andprobability of occurrence.

Some types of danger are represented by special symbols:

1.2. Meaning of used terms

Installation manual:

Instruction manual specified for a certain product or application,explaining how to install, configure and maintain it.

Operation manual:

Instruction manual specified for a certain product or application,explaining how to operate it.

Maintenance instructions:

Instruction manual specified for a certain product or application,which explains (if relevant) how to install, configure, operate and/ormaintain the product or application.

Dealer:

Sales distributor for products as per the subject of this manual.

Installer:

Technical skilled person who is qualified to install products as per thesubject of this manual.

User:

Person who is owner of the product and/or operates the product.

Service company:

Qualified company which can perform or coordinate the requiredservice to the unit.

Applicable legislation:

All international, European, national and local directives, laws,regulations and/or codes which are relevant and applicable for acertain product or domain.

Accessories:

Equipment which is delivered with the unit and which needs to beinstalled according to instructions in the documentation.

Optional equipment:

Equipment which can optionally be combined to the products as perthe subject of this manual.

Field supply:

Equipment which needs to be installed according to instructions inthis manual, but which are not supplied by Daikin.

2. GENERAL SAFETY PRECAUTIONS

The precautions here, all cover very important topics, so be sure tofollow them carefully.

All activities described in this manual shall be carried out by aninstaller and in accordance with the applicable legislation.

Be sure to wear adequate personal protection equipment (protectiongloves, safety glasses, …) when performing installation, maintenanceor service to the unit.

If not sure of installation procedures or operation of the unit, alwayscontact your local dealer for advice and information.

Improper installation or attachment of equipment or accessoriescould result in electric shock, short-circuit, leaks, fire or other damageto the equipment. Be sure only to use accessories and optionalequipment made by Daikin which are specially designed for use withthe products as of subject in this manual and have them installed byan installer.

DANGER

Indicates an imminently hazardous situation which, if notavoided, will result in death or serious injury.

WARNING

Indicates a potentially hazardous situation which, if notavoided, could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation which, if notavoided, may result in minor or moderate injury. It may alsobe used to alert against unsafe practices.

NOTICE

Indicates situations that may result in equipment orproperty-damage accidents only.

INFORMATION

This symbol identifies useful tips or additional information.

Electric current.

Danger of burning and scalding.

DANGER: ELECTRICAL SHOCK

Switch off all power supply before removing the switch boxservice panel or before making any connections ortouching electrical parts.

Do not touch any switch with wet fingers. Touching a switchwith wet fingers can cause electrical shock. Beforetouching electrical parts, turn off all applicable powersupply.

To avoid electric shock, be sure to disconnect the powersupply 1 minute or more before servicing the electricalparts. Even after 1 minute, always measure the voltage atthe terminals of main circuit capacitors or electrical partsand, before touching, be sure that those voltages are50 V DC or less.

When service panels are removed, live parts can easily betouched by accident. Never leave the unit unattendedduring installation or servicing when the service panel isremoved.

DANGER: DO NOT TOUCH PIPING AND INTERNALPARTS

Do not touch the refrigerant piping, water piping or internalparts during and immediately after operation. The pipingand internal parts may be hot or cold depending on theworking condition of the unit.

Your hand may suffer burns or frostbite if you touch thepiping or internal parts. To avoid injury, give the piping andinternal parts time to return to normal temperature or, ifyou must touch them, be sure to wear protective gloves.

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

Installation manual

2

3. INTRODUCTION

3.1. General information

The unit is the indoor part of the air to water ERHQ or ERLQ heatpumps. This unit is designed for wall mounted indoor installation. See"6.1. Selecting an installation location" on page 12. The unit can becombined with Daikin fan coil units, floor heating applications, lowtemperature radiators, Daikin domestic water heating applicationsand Daikin solar kit for domestic hot water applications.

Heating/cooling units and heating only units

The unit range consists of two main versions: a heating/cooling(EKHBX) version and a heating only (EKHBH) version.

Both versions are delivered with an integrated backup heater foradditional heating capacity during low outdoor temperatures. Thebackup heater also serves as a backup in case of malfunctioning ofthe outdoor unit. The backup heater models are available for aheating capacity of 3, 6 and 9 kW, and – depending on the heatingcapacity – for three different power supply specifications.

1 Heat pump capacity2 Required heating capacity (site dependent)3 Additional heating capacity provided by the backup heater4 Equilibriumtemperature (can be set through the user

interface, refer to "8.9. Field settings" on page 26)TA Ambient (outdoor) temperaturePH Heating capacity

Domestic hot water tank (option)

An optional domestic hot water tank can be connected to the indoorunit. The domestic hot water tank is available in 2 types:

■ tank with built-in electrical booster heater (EKHW*) in 3 differentsizes: 150, 200 and 300 litre,

■ tank without electrical booster heater (EKHTS) in 2 differentsizes: 200 and 260 litre.

Refer to the domestic hot water tank installation manual for furtherdetails.

Drain pan kit (option)

For heating/cooling versions (EKHBX), it is necessary to install theEKHBDP drain pan kit.

For more information concerning the drain pan kit, refer to"6.5. Installation of the EKHBDP drain pan kit (only for EKHBXmodels)" on page 14.

Solar kit for domestic hot water tank (option)

For information concerning the EKSOLHW solar kit, refer to theinstallation manual of that kit.

Digital I/O PCB kit (option)

An optional EKRP1HB digital I/O PCB can be connected to theindoor unit and allows:

■ remote alarm output,

■ heating/cooling ON/OFF output,

■ bivalent operation (permission signal for the auxiliary boiler) oradditional external backup heater permission signal.

Refer to the operation manual of the indoor unit and to the installationmanual of the digital I/O PCB for more information.

Refer to the wiring diagram or connection diagram for connecting thisPCB to the unit.

Room thermostat kit (option)

An optional room thermostat EKRTW, EKRTWA, or EKRTR can beconnected to the indoor unit. Refer to the installation manual of theroom thermostat for more information.

Bottom plate heater (option)

Possible combinations

Connection to a benefit kWh rate power supply

This equipment allows for connection to benefit kWh rate powersupply delivery systems. Full control of the unit will remain possibleeven in case the benefit kWh rate power supply is of the type thatpower supply is interrupted. Refer to "Connection to a benefit kWhrate power supply" on page 21 for more details.

WARNING

■ Never directly touch any accidental leakingrefrigerant. This could result in severe wounds causedby frostbite.

■ Do not touch the refrigerant pipes during andimmediately after operation as the refrigerant pipesmay be hot or cold, depending on the condition of therefrigerant flowing through the refrigerant piping,compressor, and other refrigerant cycle parts. Yourhands may suffer burns or frostbite if you touch therefrigerant pipes. To avoid injury, give the pipes time toreturn to normal temperature or, if you must touchthem, be sure to wear proper gloves.

CAUTION

Do not rinse the unit. This may cause electric shocks orfire.

Indoor unit model Backup heater capacityBackup heater

nominal voltage

EKHB*016BB3V3 3 kW 1x 230 V

EKHB*016BB6V3 6 kW 1x 230 V

EKHB*016BB6WN 6 kW 3x 400 V

EKHB*016BB9WN 9 kW 3x 400 V

EKHB*016BB6T1 6 kW 3x 230 V

EKHB*016BB9T1 9 kW 3x 230 V

TA

43

1

2

PH

INFORMATION

Use the EKSOLHW solar kit only in combination with theEKHW* domestic hot water tank.

Connection between EKSOLHW and EKHTS domestic hotwater tank is NOT possible.

Connectable heaters

EKBPHT16Y* EKBPHTH16A

EKHBH/X016BB Possible Possible(a)

(a) Recommended.

EKHBH/X_BB

ERHQ_BA Possible(a)

(a) If a bottom plate heater is required, see "Bottom plate heater (option)" on page 3.

ERLQ_BA Possible

ERLQ_CA(b)

(b) Bottom plate heater at outdoor unit is controlled by the outdoor unit pcb.

Possible

Installation manual

3EKHBH/X016BB

Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

3.2. Scope of this manual

This manual does NOT include the selection procedure and the watersystem design procedure. Only some precautions and tips and tricksabout the design of the water circuit are given in a separate chapterof this manual.

Once the selection is done and the water system is designed, thismanual describes the procedures for handling, installing andconnecting the EKHBH/X units. This manual has been prepared toensure adequate maintenance of the unit, and it will provide help ifproblems occur.

3.3. Model identification

Indoor unit

Drain pan kit (optional)

3.4. Typical application examples

The application examples given below are for illustration purposesonly.

Application 1

Space heating only application with the room thermostat connectedto the indoor unit.

1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater5 Pump6 Shut-off valve7 Collector (field supply)

FHL1...3 Floor heating loopT Room thermostat (optional)

Pump operation and space heating

When the room thermostat (T) is connected to the indoor unit, thepump (5) will operate when there is a heating request from the roomthermostat, and the outdoor unit will start operating to achieve thetarget leaving water temperature as set on the user interface.

When the room temperature is above the thermostat set point, theoutdoor unit and pump will stop operating.

INFORMATION

Refer to the installation manual of the outdoor unit for itemsnot described in this manual.

The operation of the indoor unit is described in the indoorunit operation manual.

EK HB X 016 BB 3 V3

Backup heater nominal voltage: V3 = 1P, 230 VWN = 3P, 400 VT1 = 3P, 230 V

Backup heater capacity (kW)

Series

Indication of heating/cooling capacity (kW)(a)

(a) For exact values, refer to "12. Technical specifications" on page 50.

X = heating and cooling,H = heating only

Hydro box

European kit

EK HB DP 150

Drain pan

Hydro box

European kit

NOTICE

Make sure to connect the thermostat wires to the correctterminals (see "Connection of the thermostat cable" onpage 20) and to configure the DIP switch toggle switchescorrectly (see "8.2. Room thermostat installationconfiguration" on page 23).

FHL1FHL2

FHL3

T

6 74 5321

6

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

Installation manual

4

Application 2

Space heating only application without room thermostat connected tothe indoor unit. The temperature in each room is controlled by a valveon each water circuit. Domestic hot water is provided through thedomestic hot water tank which is connected to the indoor unit.

1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater(1)

5 Pump6 Shut-off valve7 Motorised 3-way valve (delivered with domestic hot water

tank)8 Collector (field supply)9 By-pass valve (field supply)

10 Domestic hot water tank (optional)11 Booster heater(2)

12 Heat exchanger coilFHL1...3 Floor heating loop

T1...3 Individual room thermostat (optional)M1...3 Individual motorised valve to control the floor heating loop

(field supply)

Pump operation

With no thermostat connected to the indoor unit (2), the pump (5) canbe configured to operate either as long as the indoor unit is on, oruntil the required water temperature is reached.

Space heating

The outdoor unit (1) will operate to achieve the target leaving watertemperature as set on the user interface.

Domestic water heating

When domestic water heating mode is enabled (either manually bythe user, or automatically through a schedule timer) the targetdomestic hot water temperature will be achieved by a combination ofthe heat exchanger coil and the electrical booster heater(3) or backupheater(4).

When the domestic hot water temperature is below the userconfigured set point, the 3-way valve will be activated to heat thedomestic hot water by means of the heat pump. In case of largedomestic hot water demand or a high domestic hot watertemperature setting, the booster heater (11)(5) or backup heater (4)(6)

can provide auxiliary heating.

(1) For tank without electrical booster heater (EKHTS), the backup heater will be used in domestic water heating mode.

(2) Only applicable for tank with built-in electrical booster heater (EKHW*).

INFORMATION

Details on pump configuration can be found under"8.3. Pump operation configuration" on page 24.

NOTICE

When circulation in each space heating loop (FHL1...3) iscontrolled by remotely controlled valves (M1...3), it isimportant to provide a by-pass valve (9) to avoid the flowswitch safety device from being activated.

The by-pass valve should be selected as such that at alltime the minimum water flow as mentioned under"6.7. Water pipework" on page 14 is guaranteed.

It is recommended to select a pressure differencecontrolled by-pass valve.

M

FHL1FHL2

FHL3

M1

T1

M2

T2

M3

T3

10

11 12

964 5321

6

7 8

(3) Only applicable for tank with built-in electrical booster heater (EKHW*).(4) Only applicable for tank without electrical booster heater (EKHTS).(5) Only applicable for tank with built-in electrical booster heater (EKHW*).(6) Only applicable for tank without electrical booster heater (EKHTS).

INFORMATION

Only for EKHW*:

■ At low outdoor temperatures when space heatingdemand is higher, the indoor unit can be configured tohave the domestic hot water heated by the boosterheater exclusively. This assures that the full capacityof the heat pump is available for space heating.

■ Details on domestic hot water tank configuration forlow outdoor temperatures can be found under"8.9. Field settings" on page 26, field settings [5-02] to[5-04].

Only for EKHTS:

■ At low outdoor temperatures when space heatingdemand is higher, the indoor unit can be configured tohave the domestic hot water heated the heat pumpand backup heater at the same time. This assuresthat the interruption of space heating is limited to aminimum.

■ Details on domestic hot water tank configuration forlow outdoor temperatures can be found under"8.9. Field settings" on page 26, field settings [5-02] to[5-04].

NOTICE

Be sure that the correct field settings are active or selectedaccording to the applicable tank type. See field settings in"[4] Backup/booster heater operation and space heatingoff temperature" on page 28 for more details.

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Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

Application 3

Space heating and cooling application with the room thermostat setfor heating/cooling connected to the indoor unit. Heating is providedthrough floor heating loops and fan coil units. Cooling is providedthrough the fan coil units only.

Domestic hot water is provided through the domestic hot water tankwhich is connected to the indoor unit.

1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater(1)

5 Pump6 Shut-off valve7 Motorised 3-way valve (delivered with domestic hot water

tank)8 Motorised 2-way valve (field supply)9 Collector (field supply)

10 Domestic hot water tank (optional)11 Booster heater(2)

12 Heat exchanger coilFCU1...3 Fan coil unit (optional)FHL1...3 Floor heating loop

T Room thermostat (optional)

Pump operation and space heating and cooling

According to the season, the customer will select heating or coolingon the room thermostat (T). This selection is not possible byoperating the user interface.

When space heating/cooling is requested by the room thermostat (T),the pump will start operating and the indoor unit (2) will switch to"heating mode"/"cooling mode". The outdoor unit (1) will startoperating to achieve the target leaving hot/cold water temperature.

In case of cooling mode, the 2-way valve (8) will close as to preventcold water running through the floor heating loops (FHL).

The ON/OFF setting of the heating/cooling operation is done by theroom thermostat and cannot be done by the user interface on theindoor unit.

Domestic water heating

Domestic water heating is as described under "Application 2" onpage 5.

Application 4

Space heating and cooling application without the room thermostatconnected to the indoor unit, but with the heating only roomthermostat (set heating only) controlling the floor heating and theheating/cooling thermostat (set heating/cooling) controlling the fancoil units. Heating is provided through floor heating loops and fan coilunits. Cooling is provided through the fan coil units only.

1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater5 Pump6 Shut-off valve7 Motorised 2-way valve to shut off the floor heating loops

during cooling operation (field supply)8 Motorised 2-way valve for activation of the room thermostat

(field supply)9 Collector (field supply)

10 By-pass valve (field supply)FCU1...3 Fan coil unit (optional)FHL1...3 Floor heating loop

T Heating only room thermostat (optional)T4...6 Individual room thermostat for fan coil heated/cooled room

(optional)

Pump operation

With no thermostat connected to the indoor unit (2), the pump (5) canbe configured to operate either as long as the indoor unit is on, oruntil the required water temperature is reached.

(1) For tank without electrical booster heater (EKHTS), the backup heater will be used in domestic water heating mode.

(2) Only applicable for tank with built-in electrical booster heater (EKHW*).

M

FCU1FCU2

FCU3

9

M

FHL1FHL2

FHL3

10

11 12

64 5321

6

7 8

T

NOTICE

■ Make sure to connect the thermostat wires to thecorrect terminals (see "Connection of the thermostatcable" on page 20) and to configure the DIP switchtoggle switches correctly (see "8.2. Room thermostatinstallation configuration" on page 23).

■ Wiring of the 2-way valve (8) is different for a NC(normal closed) valve and a NO (normal open) valve!Make sure to connect to the correct terminal numbersas detailed on the wiring diagram.

INFORMATION

Details on pump configuration can be found under"8.3. Pump operation configuration" on page 24.

T4

T5

T6T

10

M

FCU1FCU2

FCU3

9

FHL1FHL2

FHL3

64 5321

6

7 8

M

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

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6

Space heating and cooling

According to the season, the customer will select heating or coolingthrough the user interface on the indoor unit.

The outdoor unit (1) will operate in heating mode or cooling mode toachieve the target leaving water temperature.

With the unit in heating mode, the 2-way valve (7) is open. Hot wateris provided to both the fan coil units and the floor heating loops.

With the unit in cooling mode, the 2-way valve (7) is closed to preventcold water running through the floor heating loops (FHL).

The ON/OFF setting of the heating/cooling operation is done by theuser interface on the indoor unit.

Application 5

Space heating with an auxiliary boiler (alternating operation)

Space heating application by either the Daikin indoor unit or by anauxiliary boiler connected in the system. The decision whether eitherthe EKHB* indoor unit or the boiler will operate can be achieved by anauxiliary contact or an EKHB* indoor controlled contact.

The auxiliary contact can e.g. be an outdoor temperature thermostat,an electricity tariff contact, a manually operated contact, etc. See"Field wiring configuration A" on page 7.

The EKHB* indoor unit controlled contact (also called 'permissionsignal for the auxiliary boiler') is determined by the outdoortemperature (thermistor located at the outdoor unit). See "Field wiringconfiguration B" on page 8.

Bivalent operation is only possible for space heating operation, notfor the domestic water heating operation. Domestic hot water in suchan application is always provided by the domestic hot water tankwhich is connected to the Daikin indoor unit.

The auxiliary boiler must be integrated in the piping work and in thefield wiring according to the illustrations below.

1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater(1)

5 Pump6 Shut-off valve7 Motorised 3-way valve (delivered with domestic hot water

tank)8 Non-return valve (field supply)9 Shut-off valve (field supply)

10 Collector (field supply)11 Boiler (field supply)12 Aquastat valve (field supply)13 Domestic hot water tank (optional)14 Booster heater(2)

15 Heat exchanger coilFHL1...3 Floor heating loop

Field wiring configuration A

BTI Boiler thermostat inputA Auxiliary contact (normal closed)H Heating demand room thermostat (optional)

K1A Auxiliary relay for activation of EKHB* unit (field supply)K2A Auxiliary relay for activation of boiler (field supply)

NOTICE

■ When closing several loops in the system by remotelycontrolled valves, it might be required to install a by-pass valve (10) to avoid the flow switch safety devicefrom being activated. See also "Application 2" onpage 5.

■ Wiring of the 2-way valve (7) is different for a NC(normal closed) valve and a NO (normal open) valve!Make sure to connect to the correct terminal numbersas detailed on the wiring diagram.

CAUTION

■ Be sure that the boiler and the integration of the boilerin the system is in accordance with the applicablelegislation.

■ Daikin can not be put responsible for incorrect orunsafe situations in the boiler system.

(1) For tank without electrical booster heater (EKHTS), the backup heater will be used in domestic water heating mode.

(2) Only applicable for tank with built-in electrical booster heater (EKHW*).

M

FHL1FHL2

FHL3

8

8

9

912

116

104 5321 6 7

13

14 15

1 2 3 4

K1A

K1A K2A

X Y

K2A

BTI

L

N

EKHB*/auto / Boiler

A

EKHB* X2M

H Com

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Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

Field wiring configuration B

BTI Boiler thermostat inputC Cooling demand room thermostat (optional)H Heating demand room thermostat (optional)

Com Common room thermostat (optional)K1A Auxiliary relay for activation of boiler unit (field supply)KCR Permission signal for the auxiliary boiler

Operation

■ Configuration AWhen the room thermostat requests heating, either the EKHB*unit or the boiler starts operating, depending on the position ofthe auxiliary contact (A).

■ Configuration BWhen the room thermostat requests heating, either the EKHB*unit or the boiler starts operating, depending on the outdoortemperature (status of "permission signal for the auxiliaryboiler").When the permission is given towards the boiler, the spaceheating operation by the EKHB* unit will be automaticallyswitched off.For more details see field setting [C-02~C-04].

Domestic water heating

Domestic water heating is as described under "Application 2" onpage 5.

NOTICE

■ Configuration AMake sure that auxiliary contact (A) has sufficientdifferential or time delay so as to avoid frequentchangeover between the EKHB* unit and the boiler. Ifthe auxiliary contact (A) is an outdoor temperaturethermostat, make sure to install the thermostat in theshade, so that it is not influenced or turned ON/OFFby the sun.Configuration BMake sure that the bivalent hysteresis [C-04] hassufficient differential to avoid frequent changeoverbetween the EKHB* unit and the boiler. As theoutdoor temperature is measured via the outdoor unit,air thermistor make sure to install the outdoor unit inthe shade, so that it is not influenced by the sun.Frequent switching may cause corrosion of the boilerin an early stage. Contact the manufacturer of theboiler.

■ During heating operation of the EKHB* unit, the unitwill operate so as to achieve the target leaving watertemperature as set on the user interface. Whenweather dependent operation is active, the watertemperature is determined automatically dependingon the outdoor temperature.During heating operation of the boiler, the boiler willoperate so as to achieve the target leaving watertemperature as set on the boiler controller.Never set the target leaving water temperature setpoint on the boiler controller above 55°C.

■ Make sure to only have 1 expansion vessel in thewater circuit. An expansion vessel is alreadypremounted in the Daikin indoor unit.

NOTICE

Make sure to configure the DIP switch SS2-3 on the PCBof the EKHB* switch box correctly. Refer to "8.2. Roomthermostat installation configuration" on page 23.

For configuration B: Make sure to configure the fieldsettings [C-02, C-03 and C-04] correctly. Refer to "Bivalentoperation" on page 35.

X1 X2

X Y

K1A

KCR

EKRP1HB*

BTI

1 2 3 4

H C Com

K1A

EKHB* X2M

EKRTR*

1 2 3 4

C Com H

K1A

EKHB* X2M

EKRTW*

NOTICE

Make sure that return water to the EKHB* heat exchangernever exceeds 55°C.

For this reason, never put the target leaving watertemperature set point on the boiler controller above 55°Cand install an aquastat(a) valve in the return water flow ofthe EKHB* unit.

Make sure that the non-return valves (field supply) arecorrectly installed in the system.

Make sure that the room thermostat EKRTR or EKRTWare not frequently turned ON/OFF.

Daikin shall not be held liable for any damage resultingfrom failure to observe this rule.

(a) The aquastat valve must be set for 55°C and must operate to close the return water flow to the unit when the measured temperature exceeds 55°C. When the temperature drops to a lower level, the aquastat valve must operate to open the return water flow to the EKHB* unit again.

INFORMATION

Manual permission towards the EKHB* unit on the boiler.

In case only the EKHB* unit should operate in spaceheating mode, disable the bivalent operation via setting[C-02].

In case only the boiler should operate in space heatingmode, increase the bivalent ON temperature [C-03] to25°C.

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8

Application 6

Space heating with room thermostat application through floor heatingloops and fan coil units. The floor heating loops and fan coil unitsrequire different operating water temperatures.

The floor heating loops require a lower water temperature in heatingmode compared to fan coil units. To achive these two set points, amixing station is used to adapt the water temperature according torequirements of the floor heating loops. The fan coil units are directlyconnected to the indoor unit water circuit and the floor heating loopsafter the mixing station. The control of this mixing station is not doneby the indoor unit.

The operation and configuration of the field water circuit is theresponsibility of the installer.

Daikin only offers a dual set point control function. By this functiontwo set points can be generated. Depending on the required watertemperature (floor heating loops and/or fan coil units are required)first set point or second set point can be activated.

1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater5 Pump6 Shut-off valve7 Collector zone B (field supply)8 Collector zone A (field supply)9 Mixing station (field supply)

FCU1...3 Fan coil unit (optional)FHL1...3 Floor heating loop

T1 Room thermostat for zone A (optional)T2 Room thermostat for zone B (optional)

Pump operation and space heating

When the room thermostat for the floor heating loop (T1) and the fancoil units (T2) are connected to the indoor unit, the pump (5) willoperate when there is a request for heating from T1 and/or T2. Theoutdoor unit will start operating to achieve the target leaving watertemperature. The target leaving water temperature depends on whichroom thermostat is requesting heating.

When the room temperature of both zones is above the thermostatset point, the outdoor unit and pump will stop operating.

4. ACCESSORIES

4.1. Accessories supplied with the indoor unit

See figure 11 Installation manual2 Operation manual3 Shut-off valve4 Wiring diagram sticker (inside indoor unit cover)5 Indoor unit cover fixing screw

INFORMATION

■ The advantage of the dual set point control is that theheat pump will/can operate at the lowest requiredleaving water temperature when only floor heating isrequired. Higher leaving water temperatures are onlyrequired in case fan coil units are operating.This results in a better performance of the heat pump.

■ The hydraulic balance is very important. (Hydrobox -mixing station - FCU1...3)

FHL1FHL2

FHL3

T1

T2 FCU1FCU2

FCU3

9

7

8

B

A

64 5321

6

Set point Field setting Thermo status

Zone A First UI ON OFF ON OFF

Zone B Second [7-03] OFF ON ON OFF

Resulting water temperature UI [7-03] [7-03] —

Result pump operation ON ON ON OFF

NOTICE

■ Make sure to connect the thermostat wires to thecorrect terminals (see "5. Overview of the indoor unit"on page 10).

■ Make sure to configure the field settings [7-02], [7-03]and [7-04] correctly. Refer to "Dual set point control"on page 33.

■ Make sure to configure the DIP switch SS2-3 on thePCB of the EKHBH switch box correctly. Refer to"8.2. Room thermostat installation configuration" onpage 23.

■ It is the installers responsibility to make sure nounwanted situations can occur (e.g. too high watertemperatures towards floor heating loops, etc.)

■ Be aware that the actual water temperature throughthe floor heating loops depends on the control andsetting of the mixing station.

INFORMATION

■ The request signals for space heating can beimplemented in two different ways (installer choice).- Thermo ON/OFF signal from room thermostat- Status signal (active/not active) from the mixing

station

■ Daikin does not offer any type of mixing station. Dualset point control only provides the possibility to usetwo set points.

■ When only zone A request heating, zone B will be fedwith water at a temperature equal to the first set point.This can lead to unwanted heating of zone B.

■ When only zone B request heating, the mixing stationwill be fed with water at a temperature equal to thesecond set point.Depending on the control of the mixing station, thefloor heating loop can still receive water at atemperature equal to set point of the mixing station.

■ At this type of application heating/cooling selectionalways has to be done on the user interface. Refer to"Dual set point control" on page 33 for more details.

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5. OVERVIEW OF THE INDOOR UNIT

5.1. Opening the indoor unit

■ The front flap on the indoor unit cover gives access to themanometer and user interface.

■ The indoor unit cover can be removed by removing the 2 bottomscrews and unhitching the cover.

■ To gain access to the switch box components – e.g. to connectthe field wiring – the switch box service panel can be removed.Thereto, loosen the front screws and unhitch the switch boxservice panel.

5.2. Main components

INFORMATION

Make sure to fix the cover with the screws when installingthe cover (screws are delivered as accessory).

DANGER: ELECTRICAL SHOCK

See "2. General safety precautions" on page 2.

DANGER: DO NOT TOUCH PIPING AND INTERNALPARTS

See "2. General safety precautions" on page 2.

33

1

2

3

11 33

1

3

1011

8913

12

10

2

3

4

5

3

7

15

6

13

14

16

21

3

17

19

20

18

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10

1. Air purge valveRemaining air in the water circuit will be automatically removedvia the air purge valve.

2. Backup heaterThe backup heater consists of an electrical heating element inthe backup heater vessel that will provide additional heatingcapacity to the water circuit if the heating capacity of the outdoorunit is insufficient due to low outdoor temperatures.

3. Temperature sensorsFour temperature sensors determine the water and refrigeranttemperature at various points in the water circuit.

4. Switch boxThe switch box contains the main electronic and electrical partsof the indoor unit.

5. Heat exchanger

6. Expansion vessel (10 l)

7. User interfaceThe user interface allows the installer and user to set up, useand maintain the unit.

8. Refrigerant liquid connection

9. Refrigerant gas connection

10. Shut-off valves (accessory)The shut-off valves on the water inlet connection and wateroutlet connection allow isolation of the indoor unit water circuitside from the residential water circuit side. This facilitatesdraining and filter replacement of the indoor unit.

11. Water inlet connection

12. Water outlet connection

13. Drain and fill valves

14. Water filterThe water filter removes dirt from the water to prevent damageto the pump or blockage of the evaporator. The water filter mustbe cleaned on a regular base. See "10. Maintenance andservice" on page 45.

15. ManometerThe manometer allows readout of the water pressure in thewater circuit.

16. Flow switchThe flow switch checks the flow in the water circuit and protectsthe heat exchanger against freezing and the pump againstdamage.

17. PumpThe pump circulates the water in the water circuit.

18. Backup heater thermal protectorThe backup heater is equipped with a thermal protector. Thethermal protector is activated when the temperature becomestoo high.

19. Backup heater thermal fuseThe backup heater is equipped with a thermal fuse. The thermalfuse is blown when the temperature becomes too high (higherthan the backup heater thermal protector temperature).

20. Pressure relief valveThe pressure relief valve prevents excessive water pressure inthe water circuit by opening at 3 bar and discharging somewater.

21. Pressure relief valve hoseThe actual outlet of the pressure relief valve. Make sure toprovide a proper drain.

5.3. Switch box main components

1. Backup heater contactors K1M, K2M, K5M and K6M.

2. Main PCBThe main PCB (Printed Circuit Board) controls the functioning ofthe unit.

3. Booster heater contactor K3M (only for installations withdomestic hot water tank)

4. Booster heater circuit breaker F2B (only for installations withdomestic hot water tank)The circuit breaker protects the booster heater in the domestichot water tank against overload or short circuit.

5. Backup heater circuit breaker F1B, F3BThe circuit breaker protects the backup heater electrical circuitagainst overload or short circuit.

6. Terminal blocksThe terminal blocks allow easy connection of field wiring.

7. Cable tie mountingsThe cable tie mountings allow to fix the field wiring with cableties to the switch box to ensure strain relief.

8. Terminal blocks X3M, X4M (only for installations with domestichot water tank)

9. PCB fuse FU1

10. DIP switch SS2The DIP switch SS2 provides 4 toggle switches to configurecertain installation parameters. See "8.1. DIP switch settingsoverview" on page 23.

11. X13A socketThe X13A socket receives the K3M connector (only forinstallations with domestic hot water tank).

K4M

TR1

K1M K2M K5M

K3M K6M

F2B F3B F1B

X1M X3M

X2M X4M

A1P

A4P

15

12

11

10

9

16

6

6

1

23

1

5

13

8

7

8

X9A

X13A

SS2

FU2

FU1

45

14

17

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Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

12. X9A socketThe X9A socket receives the thermistor connector (only forinstallations with domestic hot water tank).

13. Pump fuse FU2 (in line fuse)

14. Pump relay K4M

15. Transformer TR1

16. A4PDigital I/O PCB (only for installations with solar kit or digital I/OPCB kit).

17. X6YA/X6YB/X6YConnectors for connecting to a normal kWh rate power supply.See also "Connection to a benefit kWh rate power supply" onpage 21.

5.4. Functional diagram

1 Outdoor unit2 Indoor unit3 Expansion vessel4 Manometer5 Air purge valve6 Pressure relief valve7 Backup heater8 Pump9 Flow switch

10 Shut-off valve water outlet with drain valve (field installation)

11 Shut-off valve water inlet with drain valve (field installation)12 Filter13 Heat exchanger

R1T Outlet water heat exchanger thermistorR2T Outlet water backup heater thermistorR3T Refrigerant liquid side thermistorR4T Inlet water thermistor

6. INSTALLATION OF THE INDOOR UNIT

6.1. Selecting an installation location

The unit is to be wall mounted in an indoor location that meets thefollowing requirements:

■ The installation location is frost-free.

■ The space around the unit is adequate for servicing. (Seefigure 2).

■ The space around the unit allows for sufficient air circulation.

■ There is a provision for condensate drain (only for EKHBXmodels with drain pan kit EKHBDP) and pressure relief valveblow-off.

■ The installation surface is a flat and vertical non-combustiblewall, capable of supporting the operation weight of the unit (see"12. Technical specifications" on page 50).

■ All piping lengths and distances have been taken intoconsideration.

■ During normal operation the hydrobox unit will produce soundwhich could be observed as noise. The sound origin can bewater pump operation and/or contactor activation. Therefore it isadvisable to install the hydrobox unit on a firm wall and not in norclose to a sound sensitive environment (e.g. bedroom).

■ Do not install the unit in places with high humidity (e.g.bathroom).

NOTICE

The electrical wiring diagram can be found on the inside ofthe switch box cover.

R4T

H2O

t >

R3Tt >

R2Tt >

R1Tt >

9

10

11

32 4 8

12131

5 6 7

WARNING

Be sure to provide for adequate measures in order toprevent that the unit be used as a shelter by small animals.

Small animals making contact with electrical parts cancause malfunctions, smoke or fire. Please instruct thecustomer to keep the area around the unit clean and clear.

CAUTION

■ The equipment is not intended for use in a potentiallyexplosive atmosphere.

■ Be sure that sufficient precautions are taken, inaccordance with the applicable legislation, in case ofrefrigerant leakage.

■ When installing the unit in a small room, takemeasures in order to keep the refrigerantconcentration from exceeding allowable safety limitsin the event of a refrigerant leak.Excessive refrigerant concentrations in a closed roomcan lead to oxygen deficiency.

■ Where flammable gases may leak, where carbon fibreor ignitable dust is suspended in the air or wherevolatile flammables, such as thinner or gasoline, arehandled.Such gases may cause a fire.

Requirement Value

Maximum allowable refrigerant piping length between outdoor unit and indoor unit 75 m / 50 m(a)

(a) Depending on the connected outdoor unit. Refer to the installation manual of the outdoor unit.

Minimum required refrigerant piping length between outdoor unit and indoor unit 3 m(b)

(b) When <5 m, recharging of the outdoor unit (depending on the connected outdoor unit) is required. Refer to the installation manual of the outdoor unit.

Maximum allowable height difference between outdoor unit and indoor unit 30 m

Maximum allowable distance between the 3-way valve and the indoor unit (only for installations with domestic hot water tank).

3 m

Maximum allowable distance between the domestic hot water tank and the indoor unit (only for installations with domestic hot water tank). The thermistor cable supplied with the domestic hot water tank is 12 m in length.

10 m

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12

■ Do not install the unit in places often used as work place.In case of construction works (e.g. grinding works) where a lot ofdust is created, the unit must be covered.

■ Take care that in the event of a water leak, water can not causeany damage to the installation space and surroundings.

■ Do not place any objects or equipment on top of the unit.

■ Install the power wire at least 1 meter away from televisions orradios to prevent image interference or noise.(Depending on the radio waves, a distance of 1 meter may notbe sufficient to eliminate the noise.)

■ Do not install the unit in places such as the following:

■ Where there is mist of mineral oil, oil spray or vapour.Plastic parts may deteriorate, and cause them to fall out orwater to leak.

■ Where corrosive gas, such as sulphurous acid gas, isproduced.Corrosion of copper pipes or soldered parts may cause therefrigerant to leak.

■ Where there is machinery which emits electromagneticwaves.Electromagnetic waves may disturb the control system, andcause malfunction of the equipment.

■ Where the air contains high levels of salt.

■ Where voltage fluctuates a lot, such as that in factories.

■ In vehicles or vessels.

■ Where acidic or alkaline vapour is present.

6.2. Dimensions and service space

Unit of measurement: mm

Dimensions of the unit, see figure 3.1 Flexible drain hose2 Water outlet connection3 Water inlet connection4 Refrigerant liquid connection5 Refrigerant gas connection

FBSP Female British Standard PipeMBSP Male British Standard Pipe

Required service space, see figure 2.

6.3. Inspecting, handling and unpacking the unit

■ The indoor unit is packed in a cardboard box, fixed by straps ona wooden pallet.

■ At delivery, the unit must be checked and any damage must bereported immediately to the carrier claims agent.

■ Check if all indoor unit accessories (see "4. Accessories" onpage 9) are enclosed.

■ Bring the unit as close as possible to its final installation positionin its original package in order to prevent damage duringtransport.

■ The indoor unit weighs approximately 48 kg and should be liftedby two persons using the two lifting bars provided.

INFORMATION

If the installation is equipped with a domestic hot watertank (optional), please refer to the domestic hot water tankinstallation manual.

CAUTION

■ Do not grasp the switch box or piping to lift the unit!Two lifting bars are provided to lift the unit.

■ Safely dispose of packing materials. Packingmaterials, such as nails and other metal or woodenparts, may cause stabs or other injuries.

WARNING

Tear apart and throw away plastic packaging bags so thatchildren will not play with them. Children playing withplastic bags face danger of death by suffocation.

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Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

6.4. Mounting the indoor unit

1 Put the installation pattern (see packing) on the wall and markthe fixation positions (2 on top (● T) and 2 at the bottom (● B)).

Make sure that the marks (2 by 2) are completely level and thedimensions of the marks are corresponding according tofigure 4.When the unit is not installed level, air might get trapped in thewater circuit resulting in malfunctioning of the unit.Pay special attention to this when installing an EKHBX model toprevent overflow of the drain pan.

2 Drill 4 holes and install 4 plugs (suitable for M10).

3 Put the screws in top plugs and hang the indoor unit on the topscrews.

4 Put the screws in bottom plugs and fix the screws firmly.

6.5. Installation of the EKHBDP drain pan kit (only for EKHBX models)

For heating/cooling models, it is necessary to install the drain pan kit(see "4. Accessories" on page 9).

During cooling operation, water vapour (humidity) in the air mightcondense to liquid and collect on the cold refrigerant and water pipes.This water is collected in the drain pan, which must be connected to adrain.

For installation instructions, refer to the instruction sheet deliveredwith the drain pan kit.

6.6. Refrigerant pipework

For all guidelines, instructions and specifications regardingrefrigerant pipework between the indoor unit and the outdoor unit,please refer to the outdoor unit installation manual.

The location of the gas pipe and liquid pipe on the indoor unit isshown under "5.2. Main components" on page 10.

6.7. Water pipework

Checking the water circuit

The units are equipped with a water inlet and water outlet forconnection to a water circuit. This circuit must be provided by aninstaller and must comply with the applicable legislation.

CAUTION

The weight of the indoor unit is approximately 48 kg. Twopersons are required to mount the unit.

4

21 3

1

CAUTION

Make sure to position the pressure relief valve hose end inthe drain pan. Failure to do so might lead to water cominginto contact with electrical parts, resulting in electricalshocks or short-circuit of the electrical system.

Refrigerant piping specifications Indoor unit Outdoor unit

Gas pipe connection 15.9 mm (5/8 inch) 15.9 mm (5/8 inch)

Liquid pipe connection 9.5 mm (3/8 inch) 9.5 mm (3/8 inch)

CAUTION

When connecting the refrigerant pipes, always use twowrenches/spanners for tightening or loosening nuts! Failureto do so can result in damaged piping connections andleaks.

NOTICE

The unit is only to be used in a closed water system.Application in an open water circuit can lead to excessivecorrosion of the water piping.

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

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14

6.8. General precautions concerning water circuit

Before continuing the installation of the unit, check the followingpoints:

■ The maximum water pressure is 4 bar.

■ The maximum water temperature during space heating is 65°C(safety device setting) and 75°C(1) during domestic hot wateroperation (safety device setting). Make sure that the installedpiping and piping accessories (e.g., valve, connections,...) canwithstand the temperatures as shown in the figure below.

1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater(2)

5 Pump6 Shut-off valve7 Motorised 3-way valve (delivered with domestic hot water

tank)8 Motorised 2-way valve (field supply)9 Collector (field supply)

10 Domestic hot water tank (optional)11 Booster heater(3)

12 Heat exchanger coilFCU1...3 Fan coil unit (optional)FHL1...3 Floor heating loop

T Room thermostat (optional)

■ Provide adequate safeguards in the water circuit to be sure thatthe water pressure will never exceed the maximum allowableworking pressure (4 bar).

■ Two shut-off valves are delivered with the unit. To facilitateservice and maintenance, install one at the water inlet and oneat the water outlet of the indoor unit. Mind position of the shut-offvalves. Orientation of the integrated drain and fill valves isimportant for servicing. See figure 3.

■ Drain taps must be provided at all low points of the system topermit complete drainage of the circuit during maintenance.Two drain valves integrated in the shut-off valves are provided todrain the water from the indoor unit water system.

■ Make sure to provide a proper drain for the pressure relief valveto avoid any water coming into contact with electrical parts.

■ Air vents must be provided at all high points of the system. Thevents should be located at points which are easily accessible forservicing. An automatic air purge is provided inside the indoorunit. Check that this air purge valve is not tightened too much sothat automatic release of air in the water circuit remainspossible.

■ Take care that the components installed in the field piping canwithstand the water pressure and water temperature.

■ Always use materials which are compatible with water used inthe system and with the materials used on the indoor unit.

If air, moisture or dust gets in the water circuit, problems may occur.Therefore, always take into account the following when connectingthe water circuit:

■ Use clean pipes only.

■ Hold the pipe end downwards when removing burrs.

■ Cover the pipe end when inserting it through a wall so that nodust and dirt enter.

■ Use a good thread sealant for the sealing of the connections.

■ When using non-brass metallic piping, make sure to insulateboth materials from each other to prevent galvanic corrosion.

■ Because brass is a soft material, use appropriate tooling forconnecting the water circuit. Inappropriate tooling will causedamage to the pipes.

■ Select piping diameter in relation to required water flow andavailable external static pressure of the pump.

■ The minimum required water flow for the indoor unit operation is16 l/min. When the water flow is lower than this minimum value,flow error 7H will be displayed and the operation of the indoorunit will be stopped.

■ Never use Zn-coated parts in the water circuit. Excessivecorrosion of these parts may occur as copper piping is used inthe unit's internal water circuit.

■ When using a 3-way valve in the water circuit.It is very important to guarantee full separation betweendomestic hot water and floor heating water circuit.

■ When using a 3-way valve or a 2-way valve in the water circuit,the maximum change over time of the valve shall be less than 60seconds.

(1) Be sure that the correct field settings are active or selected according to the applicable tank type. See field settings in "[4] Backup/booster heater operation and space heating off temperature" on page 28 for more details.

(2) For tank without electrical booster heater (EKHTS), the backup heater will be used in domestic water heating mode.

(3) Only applicable for tank with built-in electrical booster heater (EKHW*).

M

FCU1FCU2

FCU3

9

M

FHL1FHL2

FHL3

10

11 12

64 5321

6

7 8

T

75°C (EKHTS)75°C (EKHTS)

65°C (EKHW*)65°C (EKHW*)

65°C65°C

NOTICE

It is strongly recommended to install an additional filter onthe heating water circuit. Especially to remove metallicparticles from the field heating piping, it is advised to use amagnetic or cyclone filter which can remove smallparticles. Small particles can damage the unit and will notbe removed by the standard filter of the heat pump unit.

Installation manual

15EKHBH/X016BB

Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

Checking the water volume and expansion vessel pre-pressure

The unit is equipped with an expansion vessel of 10 litre which has adefault pre-pressure of 1 bar.

To assure proper operation of the unit, the pre-pressure of theexpansion vessel might need to be adjusted and the minimum andmaximum water volume must be checked.

1 Check that the total water volume in the installation, excludingthe internal water volume of the indoor unit, is 20 l minimum.Refer to "12. Technical specifications" on page 50 to know theinternal water volume of the indoor unit.

2 Using the table below, determine if the expansion vessel pre-pressure requires adjustment.

3 Using the table and instructions below, determine if the totalwater volume in the installation is below the maximum allowedwater volume.

Calculating the pre-pressure of the expansion vessel

The pre-pressure (Pg) to be set depends on the maximum installationheight difference (H) and is calculated as below:

Pg=(H/10+0.3) bar

Checking the maximum allowed water volume

To determine the maximum allowed water volume in the entire circuit,proceed as follows:

1 Determine for the calculated pre-pressure (Pg) thecorresponding maximum water volume using the graph below.

2 Check that the total water volume in the entire water circuit islower than this value.

If this is not the case, the expansion vessel inside the indoor unit istoo small for the installation.

Example 1

The indoor unit is installed 5 m below the highest point in the watercircuit. The total water volume in the water circuit is 100 l.

In this example, no action or adjustment is required.

INFORMATION

In most applications this minimum water volume will have asatisfying result.

In critical processes or in rooms with a high heat loadthough, extra water volume might be required.

NOTICE

When circulation in each space heating loop is controlledby remotely controlled valves, it is important that thisminimum water volume is kept even if all the valves areclosed.

Example

1 Outdoor unit2 Indoor unit3 Heat exchanger4 Backup heater5 Pump6 Shut-off valve7 Collector (field supply)8 By-pass valve (field supply)

FHL1...3 Floor heating loopT1...3 Individual room thermostat (optional)M1...3 Individual motorised valve to control the floor

heating loop (field supply)

FHL1FHL2

FHL3

M1

T1

M2

T2

M3

T3

864 5321

6

7

Installation height difference(a)

(a) Installation height difference: height difference (m) between the highest point of the water circuit and the indoor unit. If the indoor unit is located at the highest point of the installation, the installation height is considered 0 m.

Water volume

≤280 l >280 l

≤7 m No pre-pressure adjustment required.

Actions required:• pre-pressure must be

decreased, calculate according to "Calculating the pre-pressure of the expansion vessel"

• check if the water volume is lower than maximum allowed water volume (use graph below)

>7 m

Actions required:• pre-pressure must be

increased, calculate according to "Calculating the pre-pressure of the expansion vessel"

• check if the water volume is lower than maximum allowed water volume (use graph below)

Expansion vessel of the unit too small for the installation.

pre-pressure = pre-pressure

maximum water volume = maximum water volume

0.30.5

1

1.5

2

2.5

100500 20 150 200 250 300 350 400 450maximum water volume [l]

pre-

pres

sure

[bar

]

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

Installation manual

16

Example 2

The indoor unit is installed at the highest point in the water circuit.The total water volume in the water circuit is 350 l.

Result:

■ Since 350 l is higher than 280 l, the pre-pressure must bedecreased (see table above).

■ The required pre-pressure is: Pg = (H/10 + 0.3) bar = (0/10 + 0.3) bar = 0.3 bar

■ The corresponding maximum water volume can be read fromthe graph: approximately 410 l.

■ Since the total water volume (350 l) is below the maximum watervolume (410 l), the expansion vessel suffices for the installation.

Setting the pre-pressure of the expansion vessel

When it is required to change the default pre-pressure of theexpansion vessel (1 bar), keep in mind the following guidelines:

■ Use only dry nitrogen to set the expansion vessel pre-pressure.

■ Inappropriate setting of the expansion vessel pre-pressure willlead to malfunction of the system. Therefore, the pre-pressureshould only be adjusted by an installer.

Connecting the water circuit

Water connections must be made in accordance with the applicablelegislation and the outlook diagram delivered with the unit, respectingthe water in- and outlet.

6.9. Charging water

1 Connect the water supply to a drain and fill valve (see "5.2. Maincomponents" on page 10).

2 Make sure the automatic air purge valve is open (at least 2turns).

3 Fill with water until the manometer indicates a pressure ofapproximately 2.0 bar. Remove air in the circuit as much aspossible using the air purge valves. Air present in the watercircuit might cause malfunctioning of the backup heater.

4 Check that the backup heater vessel is filled with water byopening the pressure relief valve. Water must flow out of thevalve.

6.10. Piping insulation

The complete water circuit, inclusive all piping, must be insulated toprevent condensation during cooling operation and reduction of theheating and cooling capacity.

If the temperature is higher than 30°C and the humidity is higher thanRH 80%, then the thickness of the sealing materials should be atleast 20 mm in order to avoid condensation on the surface of thesealing.

7. ELECTRICAL WIRING WORK

7.1. Precautions on electrical wiring work

NOTICE

Be careful not to deform the unit piping by using excessiveforce when connecting the piping. Deformation of thepiping can cause the unit to malfunction.

INFORMATION

■ During filling, it might not be possible to remove all airin the system. Remaining air will be removed throughthe automatic air purge valves during first operatinghours of the system. Additional filling with waterafterwards might be required.

■ The water pressure indicated on the manometer willvary depending on the water temperature (higherpressure at higher water temperature).However, at all times water pressure should remainabove 0.3 bar to avoid air entering the circuit.

■ The unit might dispose some excessive water throughthe pressure relief valve.

■ Water quality must be according to EU directive 98/83 EC.

WARNING: Electrical installation

All field wiring and components must be installed by aninstaller and must comply with the applicable legislation

NOTICE: Electrical wiring work recommendations.

To persons in charge of electrical wiring work:Do not operate the unit until the refrigerant piping iscomplete. Running the unit before the piping is ready willbreak the compressor.

DANGER: ELECTRICAL SHOCK

See "2. General safety precautions" on page 2.

WARNING

■ A main switch or other means for disconnection,having a contact separation in all poles, must beincorporated in the fixed wiring in accordance with theapplicable legislation.

■ Use only copper wires.

■ All field wiring must be carried out in accordance withthe wiring diagram supplied with the unit and theinstructions given below.

■ Never squeeze bundled cables and be sure that itdoes not come in contact with the non-insulatedpiping and sharp edges. Be sure no external pressureis applied to the terminal connections.

■ Power supply wires must be attached securely.

■ If the power supply has a missing or wrong N-phase,equipment will break down.

■ Be sure to establish an earth. Do not earth the unit toa utility pipe, surge absorber, or telephone earth.Incomplete earth may cause electrical shock.

■ Be sure to install an earth leakage protector inaccordance with the applicable legislation. Failure todo so may cause electric shock or fire.

■ Be sure to use a dedicated power circuit, never use apower supply shared by another appliance.

■ Be sure to install the required fuses or circuitbreakers.

Installation manual

17EKHBH/X016BB

Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

7.2. Internal wiring - Parts table

Refer to the internal wiring diagram supplied with the unit (on theinside of the indoor unit switch box cover). The abbreviations usedare listed below.

A1P........................ Main PCB

A2P........................ User interface PCB

A3P.................* ..... Thermostat (EKRTW/R) (PC=Power Circuit) (optional)

A3P.................* ..... Solar pump station PCB (EKSR3PA) (optional)

A4P.................* ..... Digital I/O PCB (EKRP1HB) (optional)

A4P.................* ..... Receiver PCB (EKRTR) (optional)

BSK ................* ..... Solar pump station relay (EKSR3PA) (optional)

E1H........................ Backup heater element 1

E2H........................ Backup heater element 2

E3H........................ Backup heater element 3

E4H............ ### ..... Booster heater (3 kW)(1)

F1B,F3B ................ Fuse backup heater

F2B............ ### ..... Fuse booster heater(2)

F1T ........................ Thermal fuse backup heater (250 V, 100°C)

FU1........................ Fuse 3.15 A T 250 V for PCB

FU2........................ Fuse 5 A T 250 V

FuR,FuS ................ Fuse 5 A 250 V for digital I/O PCB

K1M ....................... Contactor backup heater step 1

K2M ....................... Contactor backup heater step 2

K3M ........... ### ..... Contactor booster heater(3)

K4M ....................... Pump relay

K5M,K6M............... Contactor for backup heater all poledisconnection

M1P ....................... Pump

M2S ............. ## ..... 2-way valve for cooling mode (field supply)

M3S ............... # ..... 3-way valve: floor heating/domestic hot water

PHC1..................... Optocoupler input circuit

Q1DI,Q2DI............. Earth leakage circuit breaker (field supply)

Q1L........................ Thermal protector backup heater

Q2L,Q3L....### ..... Thermal protector booster heater

R1H ................* ..... Humidity sensor (EKRTR) (optional)

R1T.................* ..... Ambient sensor (EKRTR and EKRTW) (optional)

R1T........................ Outlet water heat exchanger thermistor

R2T.................* ..... External sensor (floor or ambient) (EKRTETS) (optional)

R2T........................ Outlet water backup heater thermistor

R3T........................ Refrigerant liquid side thermistor

R4T........................ Inlet water thermistor

R5T................ # ..... Domestic hot water thermistor

S1L ........................ Flow switch

S2S........................ Benefit kWh rate power supply contact

S3S........................ Dual set point 2 contact

S4S........................ Dual set point 1 contact

SS1........................ DIP switch

TR1........................ Transformer 24 V for PCB

V1S........................ Spark suppression 1

V2S........................ Spark suppression 2

X1M~X9M.............. Terminal blocks

X6Y,X9B ................ Connector

7.3. System overview of field wiring

The illustration below gives an overview of the required field wiringbetween several parts of the installation. Refer also to "3.4. Typicalapplication examples" on page 4.

A Single power supply for outdoor unit, backup heater and booster heater

B Outdoor unitC Bottom plate heaterD Backup heater(4)

E Indoor unitF Room thermostat (optional)G 3-way valve for domestic hot water tank (optional)H 2-way valve for cooling mode (field supply)I Domestic hot water tank (optional)

J Booster heater(5)

K User interface (digital controller)L Power supply (normal kWh rate power supply: only in case

of benefit kWh rate power supply installation)

(1) Only applicable for tank with built-in electrical booster heater (EKHW*).(2) Only applicable for tank with built-in electrical booster heater (EKHW*).(3) Only applicable for tank with built-in electrical booster heater (EKHW*).

* Optional

# Applications with domestic hot water tank only.

## Heating/cooling applications only

### Delivered with the domestic hot water tank(a).

(a) Only applicable for tank with built-in electrical booster heater (EKHW*).

WARNING

■ Switch off the power supply before making anyconnections.

■ All field wiring and components must be installed by alicensed electrician and must comply with theapplicable legislation.

(4) For tank without electrical booster heater (EKHTS), the backup heater will be used in domestic water heating mode.

(5) Only applicable for tank with built-in electrical booster heater (EKHW*).

T

I

M

M

B D

2

612

7

8 9

E

A L

3

F

K

IC

J

H

G

1101113

4

5

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

Installation manual

18

Field wiring guidelines

■ Most field wiring on the indoor unit side is to be made on theterminal block inside the switch box. To gain access to theterminal block, remove the indoor unit cover and switch boxservice panel, see "5.1. Opening the indoor unit" on page 10.

■ Cable tie mountings are provided at the bottom of the switchbox. Fix all cables using cable ties (field supply).

■ A dedicated power circuit is required for the backup heater.

■ Installations equipped with a domestic hot water tank (optional),require a dedicated power circuit for the booster heater(1).Please refer to the domestic hot water tank installation manual.

Connection of the indoor unit power supply and communication cable

Power circuit and cable requirements

Power supply for the indoor unit is to be provided through the outdoorunit. Data communication with the outdoor unit is provided throughthe same cable.

For all guidelines and specifications regarding field wiring betweenthe indoor unit and the outdoor unit, please refer to the outdoor unitinstallation manual.

Procedure

1 Using the appropriate cable, connect the power circuit to theappropriate terminals as shown on the wiring diagram and theillustration below.

2 Connect the earth conductor (yellow/green) to the earthingscrew on the switch box mounting plate.

3 Fix the cable with cable ties to the cable tie mountings to ensurestrain relief.

4 When routing out cables, make sure that these do not obstructmounting of the indoor unit cover, see figure 3.

Note: only relevant field wiring is shown.

Item Description

Required number of conductors

Maximum running current

1 Power supply cable for outdoor unit 2+GND (a)

(a) Refer to nameplate on outdoor unit.

2 Indoor unit power supply and communication cable 3+GND (b)

(b) Cable section 2.5 mm2

3 Power cable for bottom plate heater(c)

(c) Bottom plate heater cable is only applicable in combination with ERLQ_AA/AB/BA or in case of optional EKBPHT kit. The ERLQ_CA outdoor unit controls the bottom plate heater internally by the outdoor unit pcb.

2 (d)

(d) Minimum cable section 0.75 mm2

4 Power supply cable for backup heater

2+GND or 3+GND

(e)

(e) See table under "Connection of the backup heater power supply" on page 20.

5 Room thermostat cable 3 or 4 100 mA(d)

6 3-way valve control cable 2+GND 100 mA(d)

7 2-way valve control cable 2+GND 100 mA(d)

8 Booster heater power supply and thermal protection cable(f)

(f) Only applicable for tank with built-in electrical booster heater (EKHW*).

4+GND (b)

9 Thermistor cable 2 (g)

(g) The thermistor and connection wire (12 m) are delivered with the domestic hot water tank.

10 Booster heater power supply cable(f) 2+GND 13 A

11 Benefit kWh rate power supply cable (voltage free contact) 2 (h)

(h) Cable section 0.75 mm2 till 1.25 mm2, maximum length: 50 m.Voltage free contact shall ensure the minimum applicable load of 15 V DC, 10 mA.

12 User interface cable 2 (i)

(i) Cable section 0.75 mm2 till 1.25 mm2, maximum length: 500 m.

13 Normal kWh rate power supply 2+GND (b)

CAUTION

Select all cables and wire sizes in accordance with theapplicable legislation.

WARNING

After finishing the electric work, confirm that each electricpart and terminal inside the electric parts box is connectedsecurely.

WARNING

Switch off all power supply – i.e. outdoor unit powersupply and backup heater and domestic hot watertank power supply (if applicable) – before removingthe switch box service panel.

(1) Only applicable for tank with built-in electrical booster heater (EKHW*).

X3MX1M

1 2 3

1 32

1 2 3

Installation manual

19EKHBH/X016BB

Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

Connection of the backup heater power supply

Power circuit and cable requirements

This power circuit must be protected with the required safety devicesaccording to the applicable legislation.

Select the power cable in accordance with the applicable legislation.For the maximum running current of the backup heater, refer to thetable below.

(1)(2)

Procedure

1 Using the appropriate cable, connect the power circuit to themain circuit breaker as shown on the wiring diagram and theillustration below.

2 Connect the earth conductor (yellow/green) to the earthingscrew on the X1M terminal.

3 Fix the cable with cable ties to the cable tie mountings to ensurestrain relief.

Note: only relevant field wiring is shown.

Connection of the thermostat cable

Connection of the thermostat cable depends on the application.

See also "3.4. Typical application examples" on page 4 and"8.2. Room thermostat installation configuration" on page 23 for moreinformation and configuration options on pump operation incombination with a room thermostat.

Thermostat requirements

■ Power supply: 230 V AC or battery operated

■ Contact voltage: 230 V.

Procedure

1 Connect the thermostat cable to the appropriate terminals asshown on the wiring diagram and installation manual of the roomthermostat kit.

2 Fix the cable with cable ties to the cable tie mountings to ensurestrain relief.

3 Set DIP switch SS2-3 on the PCB to ON. See "8.2. Roomthermostat installation configuration" on page 23 for moreinformation.

Connection of the first set point and second set point contacts

The connection of the set point contact is only relevant in case dualset point contact is enabled.

See also "3.4. Typical application examples" on page 4 and "Dual setpoint control" on page 33.

Contact requirements

The contact shall be a voltage free contact that ensure 230 V(100 mA).

Procedure

1 Connect the contact of first set point and second set point to theappropriate terminals as shown in the figure below

2 Fix the cables with cable ties to the cable tie mountings toensure strain relief.

3 Depending on the required pump operation set DIP switchSS2-3 and field setting [F-00]. See "8.3. Pump operationconfiguration" on page 24 and field setting [F-00] in "[F] Optionsetup" on page 38.

CAUTION

Use a dedicated power circuit for the backup heater andbooster heater(a). Never use a power circuit shared byanother appliance.

(a) Only applicable for tank with built-in electrical booster heater (EKHW*).

Indoor unit model

Backup heater

capacity

Backup heater nominal voltage

Maximum running current Zmax (ΩΩΩΩ)

EKHB*016BB3V3 3 kW 1x 230 V 13 A —

EKHB*016BB6V3(a)(b)

(a) Equipment complying with EN/IEC 61000-3-12(1)

(b) This equipment complies with EN/IEC 61000-3-11(2) provided that the system impedance Zsys is less than or equal to Zmax at the interface point between the user's supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a system impedance Zsys less than or equal to Zmax.

6 kW 1x 230 V 26 A 0.29

EKHB*016BB6WN 6 kW 3x 400 V 8.6 A —

EKHB*016BB9WN 9 kW 3x 400 V 13 A —

EKHB*016BB6T1 6 kW 3x 230 V 15 A —

EKHB*016BB9T1(b) 9 kW 3x 230 V 23 A —

(1) European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current >16 A and ≤75 A per phase.

(2) European/International Technical Standard setting the limits for voltage changes, voltage fluctuations and flicker in public low-voltage supply systems for equipment with rated current ≤75 A.

3x 230 V3x 400 V 1x 230 V

L1 N

L1 L2 L3 N L1 N

X1M X1MX3M

L1 L2 L3

X2M

SP1SP2

1 2 3 4

SP1 First set point contactSP2 Second set point contact

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

Installation manual

20

Connection of the valve control cables

Valve requirements

■ Power supply: 230 V AC

■ Maximum running current: 100 mA

Wiring the 2-way valve

1 Using the appropriate cable, connect the valve control cable tothe X2M terminal as shown on the wiring diagram.

2 Fix the cable(s) with cable ties to the cable tie mountings toensure strain relief.

Wiring the 3-way valve

1 Using the appropriate cable, connect the valve control cable tothe appropriate terminals as shown on the wiring diagram.

2 Fix the cable(s) with cable ties to the cable tie mountings toensure strain relief.

Connection of the bottom plate heater

1 Using the appropriate cable, connect the power supply cable tothe appropriate terminals as shown on the wiring diagram below.

2 Fix the cable(s) with cable ties to the cable tie mountings toensure strain relief.

3 When routing out cables, make sure that these do not obstructmounting of the indoor unit cover.

4 Select the appropriate field setting values for the bottom plateheater. See "[F-02]", "[F-03]", and "[F-04]" on page 38.

Connection to a benefit kWh rate power supply

Electricity companies throughout the world work hard to providereliable electric service at competitive prices and are often authorizedto bill clients at benefit rates. E.g. time-of-use rates, seasonal rates,Wärmepumpentarif in Germany and Austria, ...

This equipment allows for connection to such benefit rate powersupply delivery systems.

Consult with the electricity company acting as provider at the sitewhere this equipment is to be installed to know whether it isappropriate to connect the equipment in one of the benefit kWh ratepower supply delivery systems available, if any.

When the equipment is connected to such benefit kWh rate powersupply, the electricity company is allowed to:

■ interrupt power supply to the equipment for certain periods oftime;

■ demand that the equipment only consumes a limited amount ofelectricity during certain periods of time.

The indoor unit is designed to receive an input signal by which theunit switches into forced off mode. At that moment, the outdoor unitcompressor will not operate.

Possible types of benefit kWh rate power supply

Possible connections and requirements to connect the equipment tosuch power supply are illustrated in the figure below:

1 Benefit kWh rate power supply box2 Receiver controlling the signal of the electricity company3 Power supply to outdoor unit (refer to the installation

manual delivered with the outdoor unit)4 Voltage free contact to indoor unit5 Normal kWh rate power supply

NOTICE

Wiring is different for a NC (normal closed) valve anda NO (normal open) valve. Make sure to connect tothe correct terminal numbers as detailed on the wiringdiagram and illustrations below.

Normal closed (NC) 2-way valve Normal open (NO) 2-way valve

NOTICE

Two types of 3-way valves can be connected. Wiringis different for each type:

■ "Spring return 2-wire" type 3-way valveThe 3-way valve should be fitted as such thatwhen the 3-way valve is idle (not activated), thespace heating circuit is selected.

■ "SPST 3-wire" type 3-way valveThe 3-way valve should be fitted as such thatwhen terminal ports 9 and 10 are electrified, thedomestic hot water circuit is selected.

"Spring return 2-wire" valve "SPST 3-wire" valve

bottom plate heater

NC

5X2M 6 7

MNO

5 6X2M 7

M

9X2M 8 10

M

9X2M 8 10

M

1X1Y

X2M

2

15a 15

INFORMATION

Bottom plate heater is only applicable in combination withERLQ_AA/AB/BA or in case of optional EKBPHT kit. TheERLQ_CA outdoor unit controls the bottom plate heaterinternally by the outdoor unit pcb.

1

2

3

X2M17 18 30 31

L N

X40AA1P

L N

2

4

1

3

5

3

L N

2

1

43

43

L N

2

1

S2S

S2S

S2S

[d-01]=1

1

2

3

L N

2

1

3

L N

2

1

43

44

43

L N

2

1

S2S

S2S

S2S

[d-01]=2

Installation manual

21EKHBH/X016BB

Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

When the outdoor unit is connected to a benefit kWh rate powersupply, the voltage free contact of the receiver controlling the benefitkWh rate signal of the electricity company must be connected toclamps 17 and 18 of X2M (as illustrated in the figure above).

When parameter [d-01]=1 at the moment that the benefit kWh ratesignal is sent by the electricity company, that contact will open andthe unit will go in forced off mode(1).

When parameter [d-01]=2 at the moment that the benefit kWh ratesignal is sent by the electricity company, that contact will close andthe unit will go in forced off mode(2).

Type 1

This type of benefit kWh rate power supply is not interrupted.

Type 2

This type of benefit kWh rate power supply is interrupted after elapseof time.

Type 3

This type of benefit kWh rate power supply is interrupted immediately.

Connect the indoor unit to a normal kWh rate power supply

If the benefit kWh rate power supply is of type 2 or 3 (powerinterruption of main power supply to outdoor unit), the indoor unitshould be connected to a normal kWh rate power supply to allowcontinuous indoor control and operation (e.g., pump).

Disconnect terminal X6YA from X6Y and connect X6YB to X6Y.

7.4. Relocation of the digital controller

The digital controller is from factory located on the indoor unit. (See"5.2. Main components" on page 10 for actual position). If required,the digital controller can be repositioned.

Be aware that only 1 digital controller can be connected to the indoorunit.

Wiring specifications

Mounting

1 Remove the front part of the digital controller.

Insert a slotted screwdriver into the slots (1)in the rear part of the digital controller, andremove the front part of the digitalcontroller.

2 Fasten the digital controller on a flatsurface.

3 Wire the unit.

1 Unit2 Rear part of the digital controller3 Front part of the digital controller4 Wired from the rear5 Wired from the top6 Notch the part for the wiring to pass through with nippers,

etc.

(1) When the signal is released again, the voltage free contact will close and the unit will restart operation. It is therefore important to leave the auto restart function enabled. Refer to "[3] Auto restart" on page 28.

(2) When the signal is released again, the voltage free contact will open and the unit will restart operation. It is therefore important to leave the auto restart function enabled. Refer to "[3] Auto restart" on page 28.

INFORMATION

■ In case the benefit kWh rate power supply function isenabled, the screed dry-out function can not beenabled.

■ When connecting the equipment to a benefit kWh ratepower supply, change field setting [d-01]. Whenbenefit kWh rate power supply is of type 1 or indoorunit is connected to a normal kWh rate power supply(via 30-31, X2M) change both field settings [d-01] and[d-00]. Refer to "[d] Benefit kWh rate power supply/Local shift value weather dependent" on page 37.

■ If the benefit kWh rate power supply is of type 1 orindoor unit is connected to a normal kWh rate powersupply, the unit will be forced to off. Controlling thesolar pump is still possible.When the benefit kWh rate signal is sent, thecentralised control indicator will flash to indicatethat the benefit kWh rate is active.

■ If the benefit kWh rate power supply is of type 2 or 3and indoor unit is not connected to a normal kWh ratepower supply, then the heaters cannot be controlled.This power supply interruption should not be longerthan 2 hours, otherwise the real time clock of thecontroller will be reset.During power supply interruption, the controllerdisplay will be blank.

X2M30 31

L N

BLK

WH

T

X6YBX6Y

X6YA

X2M30 31

L N

BLK

WH

T

X6YB

X6YX6YA

Wire specification Value

Type 2 wire

Section 0.75-1.25 mm2

Maximum length 500 m

NOTICE

The wiring for connection is not included.

NOTICE

The digital controller has to be mounted indoors.

NOTICE

Be careful not to distort the shape of the lower part of thedigital controller by over tightening the mounting screws.

1

P1P2

1 1

6

2

3

4 5

P1P2

16a

1616a

16

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22

Connect the terminals on top of the front part of the digitalcontroller and the terminals inside the unit (P1 to 16, P2 to 16a).

4 Reattach the upper part of the digital controller.

First begin fitting from the clips at thebottom.

8. START-UP AND CONFIGURATION

The indoor unit should be configured by the installer to match theinstallation environment (outdoor climate, installed options, etc.) anduser expertise.

8.1. DIP switch settings overview

DIP switch SS2 is located on the switch box PCB (see "5.3. Switchbox main components" on page 11) and allows configuration ofdomestic hot water tank installation, room thermostat connection andpump operation.

8.2. Room thermostat installation configuration

The following table summarizes the required configuration andthermostat wiring at the terminal block (X2M: 1, 2, 3, 4) in the switchbox. Pump operation is listed in the third column. The three lastcolumns indicate whether the following functionality is available onthe user interface (UI) or handled by the thermostat (T):

• space heating or cooling on/off ( )• heating/cooling changeover ( )• heating and cooling schedule timers ( )

NOTICE

■ When wiring, run the wiring away from the powersupply wiring in order to avoid receiving electricnoise (external noise).

■ Peel the shield for the part thathas to pass through the inside ofthe digital controller case ( l ).

CAUTION

Be careful not to pinch the wiring when attaching.

CAUTION

It is important that all information in this chapter is readsequentially by the installer and that the system isconfigured as applicable.

DANGER: ELECTRIC SHOCK

See "2. General safety precautions" on page 2.

WARNING

Switch off the power supply before opening the switch boxservice panel and making any changes to the DIP switchsettings.

1

4321ON

OF

F

DIP switch

SS2 Description ON OFF

1 Not applicable for installer — (Default)

2 Domestic hot water tank installation (see "8.4. Domestic hot water tank installation configuration" on page 24)

Installed Not installed (Default)

3 Room thermostat connection(see "8.2. Room thermostat installation configuration" on page 23)

Room thermostat connected

No room thermostat connected (Default)

4 This setting(a) decides the operation mode of the heat pump when there is a simultaneous demand for more space heating/cooling and domestic water heating.

(a) Only applicable in case DIP switch 2 = ON.

Heating/cooling priority

Priority to highest demand side(b)

(b) Heating/cooling or domestic water heating mode can be restricted by schedule timer and/or field settings (4, 5, 8).

■ When no room thermostat is connected tothe indoor unit, toggle switch SS2-3 should beset to OFF.

■ When the room thermostat is connected tothe indoor unit, toggle switch SS2-3 should beset to ON.

■ On the room thermostat, confirm the correct settings (6®02=yes,6®05=9, 6®06=5) to prevent the pump from repeatedly turning onand off (i.e. chattering), and thereby impacting the lifetime ofthe pump.

INFORMATION

■ When the room thermostat is connected to the indoorunit, the heating and cooling schedule timers arenever available. Other schedule timers are notaffected. For more information on the schedule timers,refer to the operation manual.

■ When the room thermostat is connected to the indoorunit, and the button or button is pressed, thecentralised control indicator will flash to indicatethat the room thermostat has priority and controls on/off operation and change over operation.

4321ON

OF

F

4321ON

OF

F

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8.3. Pump operation configuration

Without room thermostat: DIP switch SS2-3=OFF

When no thermostat is connected to the indoor unit, pump operationwill be determined by the leaving water temperature.

To force continuous pump operation when no room thermostat isconnected do the following:

- set toggle switch SS2-3 to ON,- short-circuit the terminal numbers 1-2-4 on the terminal block

in the switch box.

With room thermostat DIP switch: SS2-3=ON

When the thermostat is connected to the indoor unit, the pump willoperate continuously whenever there is heating or cooling demandrequested by the thermostat.

Dual set point

When dual set point is enabled, the pump operation will bedetermined depending on the status of the DIP switch SS2-3 and setpoint selection contacts. Refer to the table below.

The following table summarizes the required configuration and wiringat the terminal block (X2M: 1, 2, 4) in the switch box. Pump operationis listed in the third column. The three last columns indicate whetherthe following functionality is available on the user interface (UI) orhandled by the set point selection contacts SP1 and SP2:

• space heating or cooling on/off ( )• heating/cooling changeover ( )• heating and cooling schedule timers ( )

8.4. Domestic hot water tank installation configuration

As mentioned in "Domestic hot water tank (option)" on page 3, 2types of domestic hot water tanks are available:

■ tank with built-in electrical booster heater (EKHW*)([4-03]default value will be 3),

■ tank without electrical booster heater (EKHTS)([4-03] defaultvalue will be 5).

Thermostat Configuration Pump operation

No thermostat • SS2-3=OFF• wiring: (non)

determined by leaving water temperature(a)

(a) The pump will stop when space heating/cooling is turned off or when the water reaches the desired water temperature as set on the user interface. With space heating/cooling turned on, the pump will then run every 5 minutes during 3 minutes to check the water temperature.

UI UI UI

• SS2-3=ON• wiring:

on when space heating or cooling is on ( ) UI UI UI

Heating only thermostat

• SS2-3=ON• wiring: (see

installation manual of the room thermostat kit)

on when heating request by room thermostat

T — —

Thermostat with heating/cooling switch

• SS2-3=ON• wiring: (see

installation manual of the room thermostat kit)

on when heating request or cooling request by room thermostat

T T —

INFORMATION

To set the pump speed, refer to "8.8. Setting the pumpspeed" on page 26.

INFORMATION

When dual set point is enabled, the "forced continuouspump operation" is not possible. When SS2-3 is ON whileSP1 and SP2 are both closed, the pump operation will bethe same operation as "with room thermostat" and thesecond set point will be the applicable set point. See tablebelow.

X2M

1 2 3 4

X2M

1 2 3 4

Dual set point

Configuration Pump operation

• [7-02]=1• SS2-3=OFF• wiring:

determined by leaving water temperature(a)

(a) The pump will stop when space heating/cooling is turned off or when the water reaches the desired water temperature as set on the user interface. With space heating/cooling turned on, the pump will then run every 5 minutes during 3 minutes to check the water temperature.

UI UI UI

• [7-02]=1• SS2-3=ON• wiring:

on when main or/and sub set point is requested

SP2/SP1 UI —

SP1 = First set point contact

SP2 = Second set point contact

■ When no domestic hot water tank isinstalled, toggle switch SS2-2 should be set toOFF (default).

■ When a domestic hot water tank is installed,toggle switch SS2-2 should be set to ON.

NOTICE

For correct operation of the system, it is very important tomake the correct and complete wiring connectionsbetween indoor unit and switch box(a) of the domestic hotwater tank before setting SS2-2 to ON.

The applicable logic and settings (example [4-03] default)are activated according to the connected tank. See"[4] Backup/booster heater operation and space heatingoff temperature" on page 28 for more details.

(a) Only applicable for tank with built-in electrical booster heater (EKHW*).

X2M

SP1SP2

1 2 3 4

X2M

1 2 3 4

SP1SP2

4321ON

OF

F

4321ON

OF

F

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8.5. Initial start-up at low outdoor ambient temperatures

During initial start-up and when water temperature is low, it isimportant that the water is heated gradually. Failure to do so mayresult in cracking of concrete floors due to rapid temperature change.Please contact the responsible cast concrete building contractor forfurther details.

To do so, the lowest leaving water set temperature can be decreasedto a value between 15°C and 25°C by adjusting the field setting [9-01](heating set point lower limit). Refer to "8.9. Field settings" onpage 26.

8.6. Pre-operation checks

Checks before initial start-up

After the installation of the unit, check the following before switchingon the circuit breaker:

1 Installation

Check that the unit is properly installed to avoid abnormal noisesand vibrations when starting the unit.

2 Field wiring

Make sure that the field wiring between local supply panel andindoor unit, outdoor unit and indoor unit, indoor unit and valves(when applicable), indoor unit and room thermostat (whenapplicable), and indoor unit and domestic hot water tank hasbeen carried out according to the instructions described in thechapter "7. Electrical wiring work" on page 17, according to thewiring diagrams and according to the applicable legislation.

3 Fuses or protection devices

Check that the fuses or the locally installed protection devicesare of the size and type specified in the chapter "12. Technicalspecifications" on page 50. Make sure that neither a fuse nor aprotection device has been bypassed.

4 Backup heater circuit breaker F1B/F3B

Do not forget to turn on the backup heater circuit breaker F2B inthe switch box (F1B/F3B depends on the backup heater type).Refer to the wiring diagram.

5 Booster heater circuit breaker F2B(1)

Do not forget to turn on the booster heater circuit breaker F2B inthe switch box (applies only to units with optional domestic hotwater tank).

6 Earth wiring

Make sure that the earth wires have been connected properlyand that the earth terminals are tightened.

7 Internal wiring

Visually check the switch box on loose connections or damagedelectrical components.

8 Fixation

Check that the unit is properly fixed, to avoid abnormal noisesand vibrations when starting up the unit.

9 Damaged equipment

Check the inside of the unit on damaged components orsqueezed pipes.

10 Refrigerant leak

Check the inside of the unit on refrigerant leakage. If there is arefrigerant leak, call your local dealer.

11 Power supply voltage

Check the power supply voltage on the local supply panel. Thevoltage must correspond to the voltage on the identification labelof the unit.

12 Pipe size and pipe insulation

Be sure that correct pipe sizes are installed and that theinsulation work is properly executed.

13 Stop valves

Make sure that the stop valves on the outdoor unit (gas andliquid) are fully open.

14 Air purge valve

Make sure the air purge valve is open (at least 2 turns).

15 Pressure relief valve

Check if the backup heater is completely filled with water byoperating the pressure relief valve. It should purge water insteadof air.

16 Water leak

Check the inside of the unit on water leakage. in case there is awater leakage close the water inlet and water outlet shut-offvalves and call your local dealer.

17 Shut-off valves

Make sure that the shut-off valves are correctly installed andfully open.

8.7. Powering up the indoor unit

When power supply to the indoor unit is turned on, "88" is displayedon the user interface during its initialisation, which might take up to 30seconds. During this process the user interface cannot be operated.

INFORMATION

If leaving water temperature is set between 15°C and25°C, heating is performed by the backup heater only.

INFORMATION

The function underfloor heating screed dry-out programoffers the possibility to execute automatically the gradualheat up. See "9.4. Underfloor heating screed dry-outprogram" on page 43.

DANGER

Switch off all relevant power supply before making anyconnections.

(1) Only applicable for tank with built-in electrical booster heater (EKHW*).

NOTICE

Operating the system with the backup heater notcompletely filled with water will damage the backupheater!

NOTICE

Operating the system with closed valves will damagethe pump!

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8.8. Setting the pump speed

The pump speed can be selected on the pump (see "5.2. Maincomponents" on page 10).

The default setting is high speed (I). If the waterflow in the system is too high (e.g., noise of runningwater in the installation) the speed can be set tomedium speed (II) or low speed (III).

The available external static pressure (ESP,expressed in kPa) in function of the water flow (l/min) is shown in the graph below.

8.9. Field settings

The indoor unit shall be configured by the installer to match theinstallation environment (outdoor climate, installed options, etc.) anduser demand. Thereto, a number of so called field settings areavailable. These field settings are accessible and programmablethrough the user interface on the indoor unit.

Each field setting is assigned a 3-digit number or code, for example[1-03], which is indicated on the user interface display. The first digit[1] indicates the 'first code' or field setting group. The second andthird digit [03] together indicate the 'second code'.

A list of all field settings and default values is given under "8.10. Fieldsettings table" on page 39. In this same list, we provided for 2columns to register the date and value of altered field settings atvariance with the default value.

A detailed description of each field setting is given under "Detaileddescription" on page 26.

Procedure

To change one or more field settings, proceed as follows.

1 Press the button for a minimum of 5 seconds to enter FIELDSET MODE.The icon (3) will be displayed. The current selected fieldsetting code is indicated (2), with the set value displayed tothe right (1).

2 Press the button to select the appropriate field settingfirst code.

3 Press the button to select the appropriate field settingsecond code.

4 Press the button and button to changethe set value of the select field setting.

5 Save the new value by pressing the button.

6 Repeat step 2 through 4 to change other field settings asrequired.

7 When finished, press the button to exit FIELD SET MODE.

Detailed description

[0] User permission level

If required, certain user interface buttons can be made unavailable forthe user.

Three permission levels are defined (see the table below). Switchingbetween level 1 and level 2/3 is done by simultaneously pressingbuttons and immediately followed bysimultaneously pressing buttons and , and keeping all 4buttons pressed for at least 5 seconds (in normal mode). Note that noindication on the user interface is given. When level 2/3 is selected,the actual permission level – either level 2 or level 3 – is determinedby the field setting [0-00].

I

II

III

0

10

[l/min]

ES

P [k

Pa]

16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58

20

30

40

50

60

5

15

25

35

45

55

65

III III

III III

2

31

NOTICE

Changes made to a specific field setting are only storedwhen the button is pressed. Navigating to a new fieldsetting code or pressing the button will discard thechange made.

INFORMATION

■ Before shipping, the set values have been set asshown under "8.10. Field settings table" on page 39.

■ When exiting FIELD SET MODE, "88" may bedisplayed on the user interface LCD while the unitinitialises itself.

Button

Permission level

1 2 3

Quiet mode button operable — —

Weather dependent set point button operable — —

Schedule timer enable/disable button operable operable —

Programming button operable — —

Time adjust buttons operable — —

Inspection/test operation button operable — —

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[1] Weather dependent set point

The weather dependent set point field settings define the parametersfor the weather dependent operation of the unit. When weatherdependent operation is active the water temperature is determinedautomatically depending on the outdoor temperature: low outdoortemperatures will result in warmer water and vice versa. Duringweather dependent operation, the user has the possibility to shift upor down the target water temperature by a maximum of 5°C. See theoperation manual for more details on weather dependent operation.

■ Field settings for heating operation

■ [1-00] Low ambient temperature (Lo_A): low outdoortemperature.

■ [1-01] High ambient temperature (Hi_A): high outdoortemperature.

■ [1-02] Set point at low ambient temperature (Lo_Ti): thetarget outgoing water temperature when the outdoortemperature equals or drops below the low ambienttemperature (Lo_A). Note that the Lo_Ti value should be higher than Hi_Ti, as forlow outdoor temperatures (i.e. Lo_A) warmer water isrequired.

■ [1-03] Set point at high ambient temperature (Hi_Ti): thetarget outgoing water temperature when the outdoortemperature equals or rises above the high ambienttemperature (Hi_A). Note that the Hi_Ti value should be lower than Lo_Ti, as forwarmer outdoor temperatures (i.e. Hi_A) less warm watersuffices.

■ Field settings for cooling operation

■ [1-05] Weather dependent for cooling function enable (1)/disable (0)

■ [1-06] Low ambient temperature (Lo2_A): low outdoortemperature.

■ [1-07] High ambient temperature (Hi2_A): high outdoortemperature.

■ [1-08] Set point at low ambient temperature (Lo2_Ti): thetarget outgoing water temperature when the outdoortemperature equals or drops below the low ambienttemperature (Lo2_A).Note that the Lo2_Ti value should be higher than Hi2_Ti, asfor low outdoor temperatures (i.e. Lo2_A) less cold watersuffices.

■ [1-09] Set point at high ambient temperature (Hi2_Ti): thetarget outgoing water temperature when the outdoortemperature equals or rises above the high ambienttemperature (Hi2_A).Note that the Hi2_Ti value should be lower than Lo2_Ti, asfor warmer outdoor temperatures (i.e. Hi2_A) colder water isrequired.

Tt Target water temperatureTA Ambient (outdoor) temperature

Shift value Shift value

[2] Disinfection function

Applies only to installations with a domestic hot water tank.

The disinfection function disinfects the domestic hot water tank byperiodically heating the domestic hot water to a specific temperature.

■ [2-00] Operation interval: day(s) of the week at which thedomestic hot water should be heated.

■ [2-01] Status: defines whether the disinfection function isturned on (1) or off (0).

■ [2-02] Start time: time of the day at which the domestic hotwater should be heated.

■ [2-03] Set point: high water temperature to be reached.

■ [2-04] Interval: time period defining how long the set pointtemperature should be maintained.

TDHW Domestic hot water temperatureTU User set point temperature (as set on the user interface)TH High set point temperature [2-03]

t Time

Lo_TiLo2_Ti

Lo_ALo2_A

Hi_AHi2_A

TA

Tt

+ 05

00

– 05

Hi_TiHi2_Ti

Shift value

CAUTION

The disinfection function field settings must be configuredby the installer according to the applicable legislation.

WARNING

Be aware that the domestic hot water temperature at thehot water tap will be equal to the value selected in fieldsetting [2-03] after a disinfection operation.

When the high domestic hot water temperature can be apotential risk for human injuries, a mixing valve (fieldsupply) shall be installed at the hot water outlet connectionof the domestic hot water tank. This mixing valve shallsecure that the hot water temperature at the hot water tapnever rise above a set maximum value. This maximumallowable hot water temperature shall be selectedaccording to the applicable legislation.

CAUTION

Make sure that the disinfection function start time [2-02]with defined duration [2-04] is not interrupted by possibledomestic hot water demand.

00.00 22.00 24.0001.00 23.00 t

TDHW

TH

TU

[2-02]

[2-03] [2-04]

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[3] Auto restart

When power returns after a power supply failure, the auto restartfunction reapplies the user interface settings at the time of the powersupply failure.

Note that with the function disabled the schedule timer will not beactivated when power returns to the unit after a power supply failure.Press the button to enable the schedule timer again.

■ [3-00] Status: defines whether the auto restart function isturned ON (0) or OFF (1).

[4] Backup/booster heater operation and space heating offtemperature

Backup heater operation (only for EKHW* or applicationswithout tank installed)

The operation of the backup heater can altogether be enabled ordisabled, or it can be disabled depending on operation of the boosterheater.

■ [4-00] Status: defines whether backup heater operation isenabled (1) or disabled (0).

■ [4-01] Priority: defines whether backup heater and boosterheater can operate simultaneously (0), or if the boosterheater operation has priority over the backup heateroperation (1), or if the backup heater operation has priorityover the booster heater operation (2).

Booster heater operation (only for EKHW*)

Applies only to installations with a domestic hot water tank.

The operation of the booster heater can be enabled or limiteddepending on outdoor temperature (TA), domestic hot watertemperature (TDHW) or operation mode of the heat pump.

■ [4-03] Booster heater operation: defines whether the optionalbooster heater operation is enabled (1) or has certainlimitations (0/2/3/4).

Explanation of settings of [4-03]Booster heater will/can only operate if domestic hot water modeis activated ( ).

■ [4-03]=0, then booster heater operation is only allowedduring "[2] Disinfection function" and "Powerful domesticwater heating" (see operation manual).This setting is only recommended in case the capacity of theheat pump can cover the heating requirements of the houseand domestic hot water over the complete heating season.The result of this setting is that the domestic hot water willnever be heated by the booster heater except for"[2] Disinfection function" and "Powerful domestic waterheating" (see operation manual).

■ [4-03]=1, then booster heater heater operation is onlydetermined by booster heater OFF temperature (TBH OFF),booster heater ON temperature (TBH ON) and/or scheduletimer. Refer to setting "[7-00]" on page 32 and "[7-01]" onpage 32.

■ [4-03]=2, then booster heater operation is only allowed if heatpump is out of "operation range" of heat pump domesticwater heating mode (TA<[5-03] or TA>35°C) or domestic hotwater temperature is 2°C lower then the heat pump OFFtemperature (THP OFF) for domestic hot water mode(TDHW≥THP OFF–2°C). (Refer to setting "[5-03]" on page 30,"[6-00]" on page 31, and "[6-01]" on page 31).Results in the most optimum coverage of domestic hot waterheated by the pump.

■ [4-03]=3, then booster heater operation is the same assetting 1, except that booster heater is OFF when the heatpump is active in domestic hot water mode. Theconsequence of this functionality is that setting [8-03] is notrelevant.Results in optimum coverage of domestic hot water heatedby heat pump in relation with [8-04].

NOTICE

It is therefore recommended to leave the auto restartfunction enabled.

NOTICE

If the benefit kWh rate power supply is of the type thatpower supply is interrupted, then always allow the autorestart function.

INFORMATION

Continuous indoor unit control can be guaranteedindependent of the benefit kWh rate power supply status,by connecting the indoor unit to a normal kWh rate powersupply. See "Connection to a benefit kWh rate powersupply" on page 21.

INFORMATION

Applicable for tank with built-in electrical booster heater(EKHW*)

OR

when no optional domestic hot water tank connected to theapplication (all information and limitation related to thebooster heater can be neglect).

INFORMATION

When the priority field setting is set to ON (1),space heating performance of the system might bedecreased at low outdoor temperatures, since incase of domestic water heating demand thebackup heater will not be available for spaceheating (space heating will still be provided by theheat pump).

When the priority field setting is set to ON (2),domestic water heating performance of the systemmight be decreased at low outdoor temperatures,since in case of space heating demand the boosterheater will not be available for domestic waterheating. However domestic water heating by heatpump will still be available.

NOTICE

When the priority field setting is set to OFF (0),make sure that electrical power consumption doesnot exceed supply limits.

INFORMATION

Applicable for tank with built-in electrical booster heater(EKHW*)

INFORMATION

If the booster heater operation is limited ([4-03]=0)and the ambient temperature TA is lower than the fieldsetting to which parameter [5-03] is set and [5-02]=1,then the domestic hot water will not be heated.

The consequence of this setting is that the domestichot water temperature (TDHW) can be maximum theheat pump OFF temperature (THP OFF). Refer tosetting of "[6-00]" on page 31 and "[6-01]" on page 31.

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28

■ [4-03]=4, then booster heater operation is the same assetting 2, except that the domestic water heating (heat pumpand booster) will operate according to the scheduled storageand reheat function. See field settings "[6-03]" on page 31and "[6-05]" on page 31.

Backup heater operation (only for EKHTS)

The operation of the backup heater can altogether be enabled,disabled, or limited.

■ [4-00] Status: defines whether backup heater operation isdisabled (0), enabled (1) or limited (2).When [4-00]=2, the backup heater is only allowed duringdomestic water heating mode.

Space heating off temperature

■ [4-02] Space heating off temperature: outdoor temperatureabove which space heating is turned off to avoid overheating.

■ [4-06] Backup heater emergency operation: defines whetherbackup heater is allowed (1) or not allowed (0) duringemergency operation.Emergency operation will startup backup heater operationduring certain outdoor malfunctions.

■ [4-07] Backup heater second step: defines whether backupheater second step is allowed (1) or not allowed (0).In this way it is possible to limit the backup heater capacity.

[5] Equilibrium temperature and space heating prioritytemperature

Equilibrium temperature (only for EKHW*)

The 'equilibrium temperature' field settings apply to operation of thebackup heater.

When the equilibrium temperature function is enabled, operation ofthe backup heater is restricted to low outdoor temperatures, i.e. whenthe outdoor temperature equals or drops below the specifiedequilibrium temperature. When the function is disabled, operation ofthe backup heater is possible at all outdoor temperatures. Enablingthis function reduces the working time of the backup heater.

■ [5-00] Equilibrium temperature status: specifies whether theequilibrium temperature function is enabled (1) ordisabled (0).

■ [5-01] Equilibrium temperature: outdoor temperature belowwhich operation of the backup heater is allowed.

Space heating priority temperature (only for EKHW*)

Applies only to installations with a domestic hot water tank(1). The'space heating priority temperature' field settings apply to operationof the 3-way valve and the booster heater in the domestic hot watertank.

When the space heating priority function is enabled, it is assured thatthe full capacity of the heat pump is used for space heating only whenthe outdoor temperature equals or drops below the specified spaceheating priority temperature, i.e. low outdoor temperature. In thiscase the domestic hot water will only be heated by the boosterheater.

INFORMATION

■ When setting [4-03]=1/2/3/4, the booster heateroperation can still be restricted by the scheduletimer as well. I.e., when booster heater operationis preferred during certain period of the day. (Seeoperation manual)

■ When setting [4-03]=2, the booster heater will beallowed to operate when TA<[5-03] independentof the status of [5-02]. If bivalent operation isenabled and permission signal for auxiliary boileris ON, the booster heater will be restricted evenwhen TA<[5-03]. (See "[C-02]" on page 35).

■ Booster heater is always allowed during powerfuland disinfection function, except for the periodthat the backup heater operation is required forsafety reasons and [4-02]=1.

CAUTION

For optional domestic hot water tank, the fieldsetting [4-03] shall be 0, 1, 2, 3, or 4.

In case [4-03]=5, there is an incorrect field wiringbetween tank and indoor unit. The required correctiveaction is described in "Symptom 8: [4-03] andmaximum tank set point is not according to theapplicable tank" on page 47.

INFORMATION

[4-03]=3 (default), this setting is automaticallyselected if the correct and complete wiringconnections between indoor unit and switch box(a)

of the optional domestic hot water tank are doneBEFORE SS2-2 is set to ON. [4-03]=0~4 activatethe applicable logic and field settings for EKHW*.

(a) Only applicable for tank with built-in electrical booster heater (EKHW*).

INFORMATION

For tank without electrical booster heater (EKHTS), thebackup heater will be used in domestic water heatingmode.

INFORMATION

■ In special conditions, for example the outdoorcannot work due to malfunction, the backupheater will also be allowed to operate duringspace heating.

■ If the backup heater operation is disabled([4-00]=0), the domestic water will not beheated.

CAUTION

For optional domestic hot water tank EKHTS, thefield setting [4-03] shall be 5.

[4-03]=5, this setting is automatically selected if theEKHTS tank is connected and SS2-2 is set to ON.[4-03]=5 activate the applicable logic and fieldsettings for EKHTS.

INFORMATION

■ Make sure that the domestic hot water set point isaccording to your requirements.

Start with a low domestic hot water set point, and onlyincrease if you feel that the domestic hot water supplytemperature is not sufficient for your requirements(this depends on your water using pattern).

■ Make sure the domestic water is not heatedunnecessary.

INFORMATION

Only for EKHTS: If the storage temperature set pointis higher than 50°C, Daikin advises not to disable thebackup heater second step because it will have a bigimpact on the required time for the unit to heat up thedomestic hot water tank.

(1) Only applicable for tank with built-in electrical booster heater (EKHW*).

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29EKHBH/X016BB

Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

■ [5-02] Space heating priority status: specifies whether spaceheating priority is enabled (1) or disabled (0).

■ [5-03] Space heating priority temperature: outdoortemperature below which the domestic hot water will beheated by the booster heater only, i.e. low outdoortemperature.

■ [5-04] Set point correction for domestic hot watertemperature: set point correction for the desired domestic hotwater temperature, to be applied at low outdoor temperaturewhen space heating priority is enabled. The corrected(higher) set point will make sure that the total heat capacity ofthe water in the tank remains approximately unchanged, bycompensating for the colder bottom water layer of the tank(because the heat exchanger coil is not operational) with awarmer top layer.

Tset Domestic hot water set point temperatureTU User set point (as set on the user interface)TA Ambient (outdoor) temperature

Space heating priority

Equilibrium temperature (only for EKHTS)

The 'equilibrium temperature' field settings apply to operation of thebackup heater during space heating.

When the equilibrium temperature function is enabled, operation ofthe backup heater is restricted to low outdoor temperatures, i.e. whenthe outdoor temperature equals or drops below the specifiedequilibrium temperature. This function reduces the working time ofthe backup heater.

■ [5-00] Equilibrium temperature status: the equilibriumtemperature function is enabled (1) (this field setting is fixedand can not be modified).

■ [5-01] Equilibrium temperature: outdoor temperature belowwhich operation of the backup heater is allowed.

Space heating priority temperature (only for EKHTS)

Applies only to installations with a domestic hot water tank(1). Thedomestic water is heated by heat pump and backup heater. The'space heating priority temperature' field settings apply to operationof the 3-way valve and the backup heater during domestic hot wateroperation.When the space heating priority function is enabled, it is assured thatthe full capacity of the heat pump is used as much as possible forspace heating when the outdoor temperature equals or drops belowthe specified space heating priority temperature, i.e. low outdoortemperature. This is done by allowing the backup heater to assistduring domestic hot water heating. This means the heating up time ofdomestic water heating will be kept to a minimum and as much aspossible capacity of the heat pump is used for space heating.

■ [5-02] Space heating priority temperature: outdoortemperature below which the domestic water heat up time isreduced to a minimum, as the backup heater will additionallyassist during low domestic hot water tank temperaturesituations (this field setting is fixed and can not be modified).

■ [5-03] Space heating priority temperature: outdoortemperature below which the backup heater is allowed toassist during domestic hot water heating. This means theheating up time of domestic water heating will be kept to aminimum and as much as possible capacity of the heat pumpis used for space heating.

INFORMATION

If the booster heater operation is limited ([4-03]=0)and the ambient temperature TA is lower than the fieldsetting to which parameter [5-03] is set and [5-02]=1,then the domestic hot water will not be heated.

WARNING

Be aware that the domestic hot water temperature will beautomatically increased with the value selected in fieldsetting [5-04] (if the outdoor temperature drops below fieldsetting [5-03]) compare to the user set point for domestichot water (TU). Refer to field setting [5-03], [7-00] and theoperation manual to select preferable set point.

If this high domestic hot water temperature can be apotential risk for human injuries, a mixing valve (fieldsupply) shall be installed at the hot water outlet connectionof the domestic hot water tank. This mixing valve shallsecure that the hot water temperature at the hot water tapnever rise above a set maximum value. This maximumallowable hot water temperature shall be selectedaccording to the applicable legislation.

TA

Tset

TU

[5-03]

[5-04]

(1) Only applicable for tank without electrical booster heater (EKHTS).

NOTICE

[5-01] Equilibrium temperature and [5-03] Spaceheating priority temperature are field settings that arerelated to backup heater. So it is obliged to set [5-01]and [5-03] to the same setting value.

INFORMATION

If the backup heater operation is limited ([4-00]=0) andthe ambient temperature TA is lower than the fieldsetting to which parameter [5-03] is set, then thedomestic hot water will not be heated with the backupheater.

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

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30

[6] DT for heat pump domestic water heating mode/scheduledstorage and reheat domestic water heating

DT for heat pump domestic water heating mode

Applies only to installations with a domestic hot water tank.

The 'DT (temperature difference) for heat pump domestic waterheating mode' field settings determine the temperatures at whichheating of the domestic hot water by the heat pump will be started(i.e., the heat pump ON temperature) and stopped (i.e., the heatpump OFF temperature).When the domestic hot water temperature drops below the heatpump ON temperature (THP ON), heating of the domestic hot water bythe heat pump will be started. As soon as the domestic hot watertemperature reaches the heat pump OFF temperature (THP OFF) orthe user set point temperature (TU), heating of the domestic hot waterby the heat pump will be stopped (by switching the 3-way valve).

The heat pump OFF temperature, and the heat pump ONtemperature, and its relation with field settings [6-00] and [6-01] areexplained in the illustration below.

■ [6-00] Start: temperature difference determining the heatpump ON temperature (THP ON). See illustration.

■ [6-01] Stop: temperature difference determining the heatpump OFF temperature (THP OFF). See illustration.

TU User set point temperature (as set on the user interface)THP MAX Maximum heat pump temperature at sensor in domestic

hot water tank (50°C)(depending on TA)(1)

THP OFF Heat pump OFF temperatureTHP ON Heat pump ON temperature

Scheduled storage domestic water heating(2):

The storage set point can be accessed directly using the and buttons.

■ [6-03] Scheduled storage: defines whether the scheduleddomestic water heating storage during night is enabled (1) ornot (0).

■ [6-04] Scheduled storage start time: time of the night atwhich the domestic water should be heated.

Scheduled reheat domestic water heating(3):

■ [6-05] Reheat: defines whether the scheduled domesticwater reheat during daytime is enabled (1) or continuousreheat is enabled (2) or reheat is disabled (0)

■ [6-06] Scheduled reheat start time: time of the day at whichthe domestic water should be heated.

■ [6-07] Domestic hot water reheat set point

■ [6-08] Domestic hot water reheat set point hysteresis

Example 1: Scheduled storage [6-03]=1, scheduled reheat [6-05]=1,disinfection function [2-01]=1 activated.

A Scheduled storage operation: activated at [6-04], heat up domestic hot water untill domestic hot water user interface set point TDHW (e.g 55°C) is reached.

B Scheduled reheat operation: activated at [6-06], heat up domestic hot water untill domestic hot water reheat set point [6-07] (e.g 45°C ) is reached.

C Disinfection operation (if activated): activated at [2-02], heat up domestic hot water untill domestic hot water disinfection set point [2-03] (e.g 60°C) is reached. Refer to "[2] Disinfection function" on page 27.

t TimeT Domestic hot water temperature

TDHW Domestic hot water user interface set point

Example 2: Scheduled storage [6-03]=1, continuous reheat [6-05]=2,disinfection function [2-01]=1 activated.

A Scheduled storage operation: activated at [6-04], heat up domestic hot water untill domestic hot water user interface set point TDHW (e.g 55°C) is reached.

B Continuous reheat operation: continues activated heat up domestic water till domestic hot water reheat set point [6-07] (e.g 45°C) is reached with a hysteresis of [6-08].

C Disinfection operation (if activated): activated at [2-02], heat up domestic hot water untill domestic hot water disinfection set point [2-03] (e.g 60°C) is reached. Refer to "[2] Disinfection function" on page 27.

t TimeT Domestic hot water temperature

TDHW Domestic hot water user interface set point

(1) Depending on outdoor unit and tank selection. See operation range domestic hot water for more details.

INFORMATION

The maximum domestic hot water temperature that can bereached with the heat pump is 50°C(a). It is advised toselect THP OFF not higher than 48°C in order to improveperformance of the heat pump during domestic waterheating mode.

When setting [4-03]=0, 2, 4, or 5 special attention to setting[6-00] is recommended. A good balance between therequired domestic hot water temperature and heat pumpON temperature (THP ON) is a must.

(a) Depending on outdoor unit and tank selection. See operation range domestic hot water for more details.

(2) The scheduled storage/reheat domestic water heating is only applicable in case [4-03]=4 or 5.

TU > THP MAX

T(°C)

60 TU

50 THP MAX48 THP OFF

41 THP ON

[6-01]

[6-00]

TU < THP MAX

T(°C)

45 TU = THP OFF

50 THP MAX

38 THP ON

[6-00]

TU = 45°C[6-01] = 2°C[6-00] = 7°C

TU = 70°C[6-01] = 2°C[6-00] = 7°C

(3) The scheduled storage/reheat domestic water heating is only applicable in case [4-03]=4 or 5.

A B CT

t

[2-03]

TDHW

[6-07]

[6-04] [6-06] [2-02]

A B C

[6-0

8]

BT

t

[2-03]

[6-07]

TDHW

[6-04] [2-02]

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[7] DT for booster heater and dual set point control

DT for booster heater (only for EKHW*)

Applies only to installations with a domestic hot water tank(1).

When the domestic hot water is heated and the domestic hot waterset point temperature (as set by the user) has been reached, thebooster heater will continue to heat the domestic hot water to atemperature a few degrees above the set point temperature, i.e. thebooster heater OFF temperature. These extra degrees are specifiedby the domestic hot water step length field setting. Correct settingprevents the booster heater from repeatedly turning on and off (i.e.chattering) to maintain the domestic hot water set point temperature.Note: the booster heater will turn back on when the domestic hotwater temperature drops [7-01] (field setting) below the boosterheater OFF temperature.

■ [7-00] Domestic hot water step length: temperaturedifference above the domestic hot water set pointtemperature before the booster heater is turned off.

BH Booster heaterHP Heat pump. If heating up time by the heat pump takes too

long, auxiliary heating by the booster heater can take placeTBH OFF Booster heater OFF temperature (TU+[7-00]) TBH ON Booster heater ON temperature (TBH OFF–[7-01])

THP MAX Maximum heat pump temperature at sensor in domestic hot water tank

THP OFF Heat pump OFF temperature (THP MAX–[6-01])THP ON Heat pump ON temperature (THP OFF–[6-00])

TDHW Domestic hot water temperatureTU User set point temperature (as set on the user interface)

t Time

■ [7-01] Hysteresis value booster heater: temperaturedifference determining the booster heater ON temperature(TBH ON). TBH ON=TBH OFF–[7-01]

INFORMATION

■ Make sure that the domestic hot water set point isaccording to your requirements.

Start with a low domestic hot water storage set point,and only increase if you feel that the domestic hotwater supply temperature is not sufficient for yourrequirements (this depends on your water usingpattern).

■ Make sure the domestic water is not heatedunnecessary. Start with activating automatic storageduring night (default setting). If it seems that thescheduled storage domestic water heating during thenight is not sufficient for your requirements, anadditional scheduled reheat during daytime can beset.

(1) Only applicable for tank with built-in electrical booster heater (EKHW*).

INFORMATION

If the schedule timer for booster heater (see the operationmanual) is active, the booster heater will only operate ifallowed by this schedule timer.

t

TBH ON

TDHW

THP ON

THP OFF

THP MAX

TU

TBH OFF

[6-01]

[6-00]

[7-00] [7-01]

TU = 70°C[7-00] = 3°C[6-01] = 2°C[6-00] = 7°C

HP BH HP

5

10

20

30

4041

485060

7170

73

WARNING

Be aware that the domestic hot water temperature will beautomatically increased (always) with the value selected infield setting [7-00] compare to the user set point fordomestic hot water (TU). Refer to field setting [7-00] andthe operation manual to select preferable set point.

If this domestic hot water temperature can be a potentialrisk for human injuries, a mixing valve (field supply) shallbe installed at the hot water outlet connection of thedomestic hot water tank. This mixing valve shall securethat the hot water temperature at the hot water tap neverrise above a set maximum value. This maximum allowablehot water temperature shall be selected according to theapplicable legislation.

INFORMATION

If the booster heater operation is limited ([4-03]=0), thenset point of field setting parameter [7-00] has only meaningfor powerful domestic water heating.

INFORMATION

The minimum value for booster heater ONtemperature (TBH ON) is 2°C (fixed) below heat pumpOFF temperature (THP OFF).

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

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32

Dual set point control

Applies only to installations with different heat emitter which requiredifferent set points.

Dual set point control makes it possible to generate 2 different setpoints.

■ [7-02] Dual set point control status: defines whether the dualset point control is enabled (1) or disabled (0).

■ [7-03] Second set point heating: specifies the second setpoint temperature in heating operation.

■ [7-04] Second set point cooling: specifies the second setpoint temperature in cooling operation.

[8] Domestic water heating mode timer

Applies only to installations with a domestic hot water tank.

The 'domestic water heating mode timer' field settings defines theminimum and maximum domestic water heating times, minimum timebetween two domestic water heating cycles by heat pump, andbooster heater delay time.

■ [8-00] Minimum running time: specifies the minimum timeperiod during which heat pump domestic water heating modeshould be activated, even when the target domestic hot watertemperature for heat pump (THP OFF) has already beenreached.

■ [8-01] Maximum running time: specifies the maximum timeperiod during which heat pump domestic water heating modecan be activated, even when the target domestic hot watertemperature for heat pump (THP OFF) has not yet beenreached.The actual maximum running time will automatically variatebetween [8-01] and [8-01]+[8-04] depending on the outdoortemperature. See figure in chapter "[8-04]" on page 34.

■ [8-02] Anti-recycling time: specifies the minimum requiredinterval between two heat pump domestic water heatingmode cycles.The actual anti-recycling time will automatically variatebetween [8-02] and 0 depending on the outdoor temperature.See figure in chapter "[8-04]" on page 34.

1 Heat pump domestic water heating mode (1=active, 0=not active)

2 Hot water request for heat pump (1=request, 0=no request)t Time

INFORMATION

There is no indication available which set point is active!

NOTICE

■ The first set point heating/cooling is the set pointselected on the user interface.- In heating mode the first set point can be a fixed

value or weather dependent.- In cooling mode the first set point can be a fixed

value or weather dependent.

■ The second set point heating [7-03] should be linkedto the heat emitters which requires the highest setpoint in heating mode. Example: fan coil unit.

■ The second set point cooling [7-04] is always a fixedvalue. It should be linked to the heat emitters whichrequires the lowest set point in cooling mode.Example: fan coil unit.

■ The actual second set point heating value depends onthe selected value of setting [7-03].- In case [7-03]=1~24, the actual second set point

will be first set point heating increased with [7-03] (the maximum is 55°C).In this way the second set point heating is linked to the first set point heating.

- In case [7-03]=25~55, the actual second set point heating is equal to [7-03].

■ The selection of second set point or first set point isdetermined by the terminals (X2M: 1, 2, 4).The second set point has always priority on the firstset point.

INFORMATION

When dual set point control is enabled, heating/coolingselection always has to be done on the user interface.

NOTICE

It is the responsibility of the installer to make sure nounwanted situations can occur.

It is very important that the water temperature to the floorheating loops never becomes too high in heating mode ornever too cold in cooling mode. Failure to observe this rulecan result in construction damage or discomfort. Forexample in cooling mode condensation on the floor canoccur when water towards the floor heating loops is toocold (dew point).

X2M

1 2 3 4

SP1SP2

SP1 First set point contactSP2 Second set point contact

INFORMATION

Note that when the unit is configured to work with aroom thermostat (refer to "8.2. Room thermostatinstallation configuration" on page 23), themaximum running timer will only be taken intoaccount when there is a request for space heatingor space cooling. When there is no request forspace heating or space cooling, domestic waterheating by the heat pump will continue until the'heat pump OFF temperature' (see field settings"[6]" on page 31) is reached. When no roomthermostat is installed, the timer is always takeninto account.

INFORMATION

■ If the outdoor temperature is higher than the fieldsetting to which parameter [4-02] is set, and lowerthan the field setting to which parameter [F-01], thenfield settings of parameters [8-01], [8-02], and [8-04]are not considered.

■ Parameter [F-01] is only applicable for EKHBX* indoorunits.

t

1

0

1

0

[8-01] [8-02]

[8-00]

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■ [8-03] Booster heater delay time (only for EKHW*): specifiesthe start-up time delay of the booster heater operation whenheat pump domestic water heating mode is active.

1 Booster heater operation (1=active, 0=not active)2 Heat pump domestic water heating mode (1=active, 0=not

active)3 Hot water request for booster heater (1=request, 0=no

request)4 Hot water request for heat pump (1=request, 0=no request)t Time

■ [8-04] Additional running time at [4-02]/[F-01]: specifies theadditional running time on the maximum running time atoutdoor temperature [4-02] or [F-01]. See figure below.

t TimeTA Ambient (outdoor) temperature

Anti-recycle timeMaximum running current

[9] Heating and cooling set point ranges

The purpose of this field setting is to prevent the user from selecting awrong (i.e., too hot or too cold) leaving water temperature. Theretothe heating temperature set point range and the cooling temperatureset point range available to the user can be configured.

■ [9-00] Heating set point upper limit: maximum leaving watertemperature for heating operation.

■ [9-01] Heating set point lower limit: minimum leaving watertemperature for heating operation.

■ [9-02] Cooling set point upper limit: maximum leaving watertemperature for cooling operation.

■ [9-03] Cooling set point lower limit: minimum leaving watertemperature for cooling operation.

■ [9-04] Overshoot setting: defines how much the watertemperature may rise above the set point before thecompressor stops. This function is only applicable in heatingmode.

INFORMATION

■ When heat pump is active in domestic waterheating mode, the delay time of boosterheater is [8-03].

■ When heat pump is not active in domesticwater heating mode, the delay time is 20 min.

■ The delay timer starts from booster heater ONtemperature (TBH ON)

INFORMATION

■ By adapting the booster heater delay time versus themaximum running time, an optional balance can befound between the energy efficiency and the heat uptime.

■ However, if the booster heater delay time is set toohigh, it might take a long time before the domestic hotwater reaches its set temperature upon domestic hotwater mode request.

■ The purpose of [8-03] is to delay the booster heater inrelation with the heat pump operation time in domesticwater heating mode.

■ The setting [8-03] has only meaning if setting[4-03]=1. Setting [4-03]=0/2/3/4 limits the boosterheater automatically in relation to heat pumpoperation time in domestic water heating mode.

■ Take care that [8-03] is always in relation with themaximum running time [8-01].

Example: [4-03]=1

t

1

0

1

0

1

0

[8-03]

3

4

1

0

Energy saving settingsQuick heating settings

(default)

[8-01] 20~60 min 30 min

[8-03] [8-01] + 20 min 20 min

Heating Cooling

INFORMATION

Only for EKHW*: The full advantage of [8-04] will beapplicable if setting [4-03] is not 1.

CAUTION

■ In case of a floor heating application, it is important tolimit the maximum leaving water temperature atheating operation according to the specifications ofthe floor heating installation.

■ In case of a floor cooling application, it is important tolimit the minimum leaving water temperature atcooling operation (field setting of parameter [9-03]) to16~18°C to prevent condensation on the floor.

t

TA

t

TA

0

[8-01]

[5-03] [4-02]

[8-02]

[8-01]+[8-04]

0

[8-01]

[F-01] 35°C

[8-02]

[8-01]+[8-04]

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

Installation manual

34

Automatic setback function

Setback function provides the possibility to lower the watertemperature during space heating. The setback function can forinstance be activated during the night because the temperaturedemands during night and day are not the same.

■ [9-05] Defines whether the setback function is turned ON (1)or OFF (0)

■ [9-06] Start time: time at which setback is started

■ [9-07] Stop time: time at which setback is stopped

■ [9-08] Leaving water setback value

A Normal leaving water temperature set point or calculated weather depended set point

B Calculated leaving water setback temperature set pointt TimeT Temperature

In case the EKHW* is installed and [4-03]=4 or the EKHTS tank isinstalled, it is advised to set the start time of automatic storage duringnight [6-04] on the moment that the setback function starts [9-06].

[A] Quiet mode

This field setting allows to select the desired quiet mode. Two quietmodes are available: quiet mode A and quiet mode B.

In quiet mode A, priority is given to the outdoor unit operating quietlyunder all circumstances. Fan and compressor speed (and thusperformance) will be limited to a certain percentage of the speed atnormal operation. In certain cases, this might result in reducedperformance.

In quiet mode B, quiet operation might be overridden when higherperformance is required. In certain cases, this might result in lessquiet operation of the outdoor unit to meet the requestedperformance.

■ [A-00] Quiet mode type: defines whether quiet mode A (0) orquiet mode B (2) is selected.

■ [A-01] Parameter 01: do not change this setting. Leave it setto its default value.

[C] Setup on EKRP1HB digital I/O PCB

Solar priority mode

■ [C-00] Solar priority mode setting: for information concerningthe EKSOLHW solar kit, refer to the installation manual ofthat kit.

Alarm output logic

■ [C-01] Alarm output logic: defines the logic of the alarmoutput on the EKRP1HB digital I/O PCB.[C-01]=0, the alarm output will be powered when an alarmoccurs (default).[C-01]=1, the alarm output will not be powered when analarm occurs. This field setting allows for distinction betweendetection of an alarm and detection of a power failure to theunit.

Bivalent operation

Applies only to installations with an auxiliary boiler (alternatingoperation, parallel connected). The purpose of this function is todetermine — based on the outdoor temperature — which heatingsource can/will provide the space heating, either the Daikin indoorunit or an auxiliary boiler.

The field setting "bivalent operation" apply only the indoor unit spaceheating operation and the permission signal for the auxiliary boiler.

When the "bivalent operation" function is enabled, the indoor unit willstop automatically in space heating operation when the outdoortemperature drops below "bivalent ON temperature" and thepermission signal for the auxiliary boiler becomes active.

When the bivalent operation function is disabled, the space heatingby indoor unit is possible at all outdoor temperatures (see operationranges) and permission signal for auxiliary boiler is alwaysdisactivated.

■ [C-02] Bivalent operation status: defines whether bivalentoperation is enabled (1) or disabled (0).

■ [C-03] Bivalent ON temperature: defines the outdoortemperature below which the permission signal for theauxiliary boiler will be active (closed, KCR on EKRP1HB) andspace heating by indoor unit will be stopped.

INFORMATION

■ Remark that the icon will be flashing during setbackoperation. The calculated leaving water setback setpoint is not shown during setback operation.

■ By default the setback function is disabled.

■ The setback function can be combined with theautomatic weather dependent set point operation.

■ Setback function is an automatic daily scheduledfunction.

■ The setback function can be combined with theschedule timer. When setback is active, the scheduledspace heating set point will be lowered with the [9-08]leaving water setback value.

INFORMATION

Pay attention not to set the setback value too low,especially during colder periods (e.g. winter time). It ispossible that the room temperature can not be reached (orit will take a much longer time) because of the bigtemperature difference.

[9-06] [9-07]

B

A

T

t

55°C

53°C

2°C [9-08]

NOTICE

Do not set other values than the ones mentioned.

[C-01] Alarm No alarmNo power supply

to unit

0 (default)

Closed output Open output Open output

1 Open output Closed output Open output

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■ [C-04] Bivalent hysteresis: defines the temperature differencebetween bivalent ON temperature and bivalent OFFtemperature.Permission signal X1–X2 (EKRP1HB)

TA Outdoor temperature

Additional external backup heater permission signal [C-02]=2

This function gives the possibility to drive an additional externalbackup heater.The additional external backup heater can be used to assist spaceheating (not domestic water heating) during low ambient conditions.

The signal for additional external heater will be activated when thesecond step of the internal backup heater is closed and when theoutdoor temperature goes below [C-03] setting with [C-04] hysteresis.

■ [C-02]=2 Additional external backup heater operation isenabled (2)

■ [C-03] External backup heater ON temperature: defines theoutdoor temperature below which the permission signal forthe external backup heater will be active (closed, KCR onEKRP1HB).

■ [C-04] External backup heater hysteresisExternal backup heater permission signal X1–X2(EKRP1HB)

TA Outdoor temperature

CAUTION

Make sure to observe all rules mentioned inapplication 5 when bivalent operation function isenabled.

Daikin shall not be held liable for any damageresulting from failure to observe this rule.

INFORMATION

■ In case the outdoor unit is NOT ERLQ_CA* orERHQ_W1+ERLQ_W1, the combination ofsetting [4-03]=0/2 with bivalent operation at lowoutdoor temperature can result in domestic hotwater shortage.

■ The bivalent operation function has no impact onthe domestic water heating mode. The domestichot water is still and only heated by the indoorunit.

■ The permission signal for the auxiliary boiler islocated on the EKRP1HB (digital I/O PCB). Whenit is activated, the contact X1, X2 is closed andopen when it is disactivated. See figure for theschematic location of this contact.

TA[C-03]

[C-04]

closed

open

YC Y1 Y2 Y3 Y4

X1

X2

X3

X4

OFF ON

X2M

SS1

X1M

INFORMATION

When [4-07] "Backup heater second step" is disabled, thenthe additional external backup heater signal will never beactivated.

CAUTION

It is the responsibility of the installer to make sure nounwanted situations can occur and that all safeties areimplemented according to applicable legislation.

Daikin shall not be held liable for any damage resultingfrom failure to observe this rule.

INFORMATION

Permission signal X1–X2 can only be for the bivalentoperation OR external backup heater permission signal.

Both functions cannot be used at the same time.

closed

open

TA[C-03]

[C-04]

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

Installation manual

36

[d] Benefit kWh rate power supply/Local shift value weatherdependent

Benefit kWh rate power supply

■ [d-00] Switching off heaters: Defines which heaters areswitched off when the benefit kWh rate signal of theelectricity company is received.If [d-01]=1 or 2 and the benefit kWh rate signal of theelectricity company is received, following devices will beswitched off.Only for EKHW*(1):

Only for EKHTS(2):

■ [d-01] Unit connection to benefit kWh rate power supply:Defines whether or not the outdoor unit is connected to abenefit kWh rate power supply.If [d-01]=0, the unit is connected to a normal power supply(default value).If [d-01]=1 or 2, the unit is connected to a benefit kWh ratepower supply. In this case the wiring requires specificinstallation like explained in "Connection to a benefit kWhrate power supply" on page 21. When parameter [d-01]=1 at the moment that the benefitkWh rate signal is sent by the electricity company, thatcontact will open and the unit will go in forced off mode(3).When parameter [d-01]=2 at the moment that the benefitkWh rate signal is sent by the electricity company, thatcontact will close and the unit will go in forced off mode(4).

Local shift value weather dependent

The local shift value weather dependent field setting is only relevantin case weather dependent set point (see field setting "[1] Weatherdependent set point" on page 27) is selected.

■ [d-03] Local shift value weather dependent: determines theshift value of the weather dependent set point aroundoutdoor temperature of 0°C.

Tt Target water temperatureTA Outdoor temperatureR RangeL Local shift value

[1-00]~[1-04] Applicable field settings of the weather dependent set point [1].

[E] Unit information readout

■ [E-00] Readout of the software version (example: 23)

■ [E-01] Readout of the EEPROM version (example: 23)

■ [E-02] Readout of the unit model identification (example: 11)

■ [E-03] Readout of the liquid refrigerant temperature

■ [E-04] Readout of the inlet water temperature

(1) Only applicable for tank with built-in electrical booster heater (EKHW*).

[d-00] Compressor Back up heater Booster heater

0 (default)

Forced off Forced off Forced off

1 Forced off Forced off Permitted

2 Forced off Permitted Forced off

3 Forced off Permitted Permitted

(2) Only applicable for tank without electrical booster heater (EKHTS).

[d-00] Compressor Backup heater

0 (default) Forced off Forced off

2 Forced off Permitted

INFORMATION

■ [d-00] settings 1, 2 and 3 are only meaningfulif the benefit kWh rate power supply is of type1 or indoor unit is connected to a normal kWhrate power supply (via 30-31 X2M) and thebackup heater and booster heater are notconnected to the benefit kWh rate powersupply.

■ For EKHTS, do not select 1 or 3 value.

(3) When the signal is released again, the voltage free contact will close and the unit will restart operation. It is therefore important to leave the auto restart function enabled. Refer to "[3] Auto restart" on page 28.

(4) When the signal is released again, the voltage free contact will open and the unit will restart operation. It is therefore important to leave the auto restart function enabled. Refer to "[3] Auto restart" on page 28.

[d-03]Outdoor temperature range

(TA) Local shift value

0 — —

1–2°C~2°C

2

2 4

3–4°C~4°C

2

4 4

NOTICE

[E-03] and [E-04] readouts are not permanentlyrefreshed. Temperature readouts are updated afterlooping through the field setting first codes again only.

TA

Tt

[1-03]

[1-00] 0°C [1-01]

[1-02]

L

R

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[F] Option setup

Pump operation

The pump operation field setting apply to the pump operation logiconly when DIP switch SS2-3 is OFF.

When the pump operation function is disabled the pump will stop ifthe outdoor temperature is higher than the value set by [4-02] or if theoutdoor temperature drops below the value set by [F-01]. When thepump operation is enabled, the pump operation is possible at alloutdoor temperatures. Refer to "8.3. Pump operation configuration"on page 24.

■ [F-00] Pump operation: specifies wether the pump operationfunction is enabled (1) or disabled (0).

Space cooling permission

■ [F-01] Space cooling permission temperature: defines theoutdoor temperature below which space cooling is turned off.

Bottom plate heater control

Applies only to installation with an outdoor unit ERLQ or in case theoption bottom plate heater kit is installed.

■ [F-02] Bottom plate heater ON temperature: defines theoutdoor temperature below which the bottom plate heater willbe activated by indoor unit in order to prevent ice build-up inthe bottom plate of the outdoor unit at lower outdoortemperatures.

■ [F-03] Bottom plate heater hysteresis: defines thetemperature difference between bottom plate heater ONtemperature and the bottom plate heater OFF temperature.Bottom plate heater

TA Outdoor temperature

Functionality of X14A

■ [F-04] Functionality of X14A: specifies if the logic of X14Afollows the output signal for the solar kit model (EKSOLHW)EKHBH/X_AA/AB (0) or if the logic of X14A follows the outputfor the bottom plate heater (1).

INFORMATION

This function is only valid for EKHBX when spacecooling is selected.

CAUTION

The bottom plate heater is controlled via X14A. Make sure[F-04] is correctly set.

INFORMATION

The bottom plate heater at ERLQ_CA is controlledinternally by the outdoor unit pcb. The field settings [F-02]and [F-03] are not applicable for this unit.

TA[F-02]

[F-03]

ON

OFF

INFORMATION

Independent from field setting [F-04], the contact X3-X4(EKRP1HB) follows the logic of the output signal for thesolar kit model (EKSOLHW). See figure below for theschematic location of this contact.

YC Y1 Y2 Y3 Y4

X1

X2

X3

X4

OFF ON

X2M

SS1

X1M

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

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38

8.10. Field settings table

First code

Second code Setting name

Installer setting at variance with default valueDefault value Range Step UnitDate Value Date Value

0 User permission level

00 User permission level 3 2/3 1 —

1 Weather dependent set point

00 Low ambient temperature (Lo_A) –10 –20~5 1 °C

01 High ambient temperature (Hi_A) 15 10~20 1 °C

02 Set point at low ambient temperature (Lo_Ti) 40 25~55 1 °C

03 Set point at high ambient temperature (Hi_Ti) 25 25~55 1 °C

05 Weather dependent for cooling function enable/disable 0 (OFF) 0/1 — —

06 Low ambient temperature (Lo2_A) 20 10~25 1 °C

07 High ambient temperature (Hi2_A) 35 25~43 1 °C

08 Set point at low ambient temperature (Lo2_Ti) 22 5~22 1 °C

09 Set point at high ambient temperature (Hi2_Ti) 18 5~22 1 °C

2 Disinfection function

00 Operation interval Fri Mon~Sun, All — —

01 Status 1 (ON) 0/1 — —

02 Start time 23:00 0:00~23:00 1:00 hour

03 Set point (only in combination with domestic hot water tank without electrical booster heater (EKHTS), [4-03]=5)

60 fixed 5 °C

03 Set point (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*), [4-03]≠5)

70 55~80 5 °C

04 Interval (only in combination with domestic hot water tank without electrical booster heater (EKHTS), [4-03]=5)

60 40~60 5 min

04 Interval (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*), [4-03]≠5)

10 5~60 5 min

3 Auto restart

00 Status 0 (ON) 0/1 — —

4 Backup/booster heater operation and space heating off temperature

00 Backup heater operation (only in combination with domestic hot water tank without electrical booster heater (EKHTS))

1 (ON) 0/1/2 — —

00 Backup heater operation (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*))

1 (ON) 0/1 — —

01 Backup/booster heater priority 0 (OFF) 0/1/2 — —

02 Space heating off temperature 35 14~35 1 °C

03 Booster heater operation (only in combination with domestic hot water tank without electrical booster heater (EKHTS))

5 fixed — —

03 Booster heater operation (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*))

3 0/1/2/3/4 — —

04 Not applicable. 2 — — —

05 Not applicable. 0 — — —

06 Backup heater emergency operation 1 (enabled) 0/1 1 —

07 Backup heater second step 1 (enabled) 0/1 1 —

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5 Equilibrium temperature and space heating priority temperature

00 Equilibrium temperature status (only in combination with domestic hot water tank without electrical booster heater (EKHTS), [4-03]=5, this setting is fixed and can not be consulted)

1 (ON) — — —

00 Equilibrium temperature status (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*), [4-03]≠5)

1 (ON) 0/1 — —

01 Equilibrium temperature 0 –15~35 1 °C

02 Space heating priority status (only in combination with domestic hot water tank without electrical booster heater (EKHTS), [4-03]=5, this setting is fixed and can not be consulted)

1 (ON) — — —

02 Space heating priority status (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*), [4-03]≠5)

0 (OFF) 0/1 — —

03 Space heating priority temperature 0 –15~35 1 °C

04 Set point correction for domestic hot water temperature (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*), [4-03]≠5)

10 0~20 1 °C

6 DT for heat pump domestic water heating mode

00 Start 2 2~20 1 °C

01 Stop 2 0~10 1 °C

02 Not applicable. 5 — — —

Scheduled storage and reheat domestic water heating(a)

03 Scheduled time storage 1 (ON) 0/1 1 —

04 Scheduled time storage start time 1:00 0:00~23:00 1:00 hour

05 Scheduled time reheat or continuous reheat 0 (OFF) 0/1/2 1 —

06 Scheduled time reheat start time 15:00 0:00~23:00 1:00 hour

07 Domestic hot water reheat set point 45 30~50 1 °C

08 Domestic hot water reheat set point hysteresis 10 2~20 1 °C

7 DT for booster heater and dual set point control

00 Domestic hot water step length (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*), [4-03]≠5)

0 0~4 1 °C

01 Hysteresis value booster heater (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*), [4-03]≠5)

2 2~40 1 °C

02 Dual set point control status 0 (OFF) 0/1 — —

03 Second set point heating 10 1~24 / 25~55 1 °C

04 Second set point cooling 7 5~22 1 °C

8 Domestic water heating mode timer

00 Minimum running time 5 0~20 1 min

01 Maximum running time 30 5~95 5 min

02 Anti-recycling time (only in combination with domestic hot water tank without electrical booster heater (EKHTS), [4-03]=5)

0.5 0~10 0.5 hour

02 Anti-recycling time (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*), [4-03]≠5)

3 0~10 0.5 hour

03 Booster heater delay time (only in combination with domestic hot water tank with built-in electrical booster heater (EKHW*), [4-03]≠5)

50 20~95 5 min

04 Additional running time at [4-02]/[F-01] 95 0~95 5 min

First code

Second code Setting name

Installer setting at variance with default valueDefault value Range Step UnitDate Value Date Value

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40

9 Heating and cooling set point ranges

00 Heating set point upper limit 55 37~55 1 °C

01 Heating set point lower limit 25 15~37 1 °C

02 Cooling set point upper limit 22 18~22 1 °C

03 Cooling set point lower limit 5 5~18 1 °C

04 Overshoot setting(b) 1 1~4 1 °C

Automatic set back function

05 Set back operation 0 (OFF) 0/1 1 —

06 Set back operation start time 23:00 0:00~23:00 1:00 hour

07 Set back operation stop time 5:00 0:00~23:00 1:00 hour

08 Leaving water set back value 2 0~10 1 °C

A Quiet mode

00 Quiet mode type 0 0/2 — —

01 Status 3 — — —

02 Not applicable. Do not change the default value. 1(c) Read only — —

03 Not applicable. Do not change the default value. 0(c) Read only — —

04 Not applicable. Do not change the default value. 0(c) Read only — —

b Not applicable

00 Not applicable. Do not change the default value. 0(c) Read only — —

01 Not applicable. Do not change the default value. 0(c) Read only — —

02 Not applicable. Do not change the default value. 0(c) Read only — —

03 Not applicable. Do not change the default value. 0(c) Read only — —

04 Not applicable. Do not change the default value. 0(c) Read only — —

C Setup on EKRP1HB digital I/O PCB

00 Solar priority mode setting 0 0/1 1 —

01 Alarm output logic 0 0/1 1 —

02 X1-X2 function: Bivalent operation status or additional external backup heater 0 0/1/2 1 —

03 Bivalent ON temperature or additional external backup heater temperature 0 –25~25 1 °C

04 Bivalent hysteresis or additional external backup heater hysteresis 3 2~10 1 °C

05 Not applicable. 0 — — —

d Benefit kWh rate power supply/local shift value weather dependent

00 Switching off heaters 0 0/1/2/3 1 —

01 Unit connection to benefit kWh rate power supply 0 (OFF) 0/1/2 1 —

02 Not applicable. Do not change the default value. 0 (OFF) — — —

03 Local shift value weather dependent 0 (OFF) 0/1/2/3/4 1 —

04 Not applicable. 1 — — —

05 Pump operation forced off or permitted during backup heater is forced off at benefit kWh rate power supply ([d-00]=0 or 1)

1 0/1 1 —

06 Not applicable. 1 — — —

E Unit information readout

00 Software version Read only — — —

01 EEPROM version Read only — — —

02 Unit model identification. Do not change the default value.

depending on model — — —

03 Liquid refrigerant temperature Read only — 1 °C

04 Inlet water temperature Read only — 1 °C

First code

Second code Setting name

Installer setting at variance with default valueDefault value Range Step UnitDate Value Date Value

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F Option setup

00 Pump operation stop 0 (enabled) 0/1 1 —

01 Space cooling permission temperature 20 10~35 1 °C

02 Bottom plate heater ON temperature 3 3~10 1 °C

03 Bottom plate heater hysteresis 5 2~5 1 °C

04 Functionality of X14A(b). 1 0/1 — —

Underfloor heating screed dry-out program

05 Action number selection 1 1~20 1 —

06 Heating set point of selected action number [F-05] 25.0(d) 15~55 1 °C

07 Time of selected action number [F-05] 0(d) 0~72 12 hour

08 Underfloor heating screed dry-out program enabled/disabled 0 (OFF) 0/1 1 —

09 Latest action number executed 0 0~21(Read only) 0 —

(a) The storage and reheat function is only applicable in case [4-03]=4 or 5.(b) Only possible to modify the first 3 minutes after power ON.(c) The default value is only an indication as it is depending on the connected outdoor unit.(d) For all action numbers of [F-05].

First code

Second code Setting name

Installer setting at variance with default valueDefault value Range Step UnitDate Value Date Value

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42

9. TEST RUN AND FINAL CHECK

The installer is obliged to verify correct operation of the indoor andoutdoor unit after installation.

9.1. Final check

Before switching on the unit, read the following recommendations:

■ When the complete installation and all necessary settings havebeen carried out, be sure that all panels of the unit are closed. Ifthis is not the case, inserting your hand through the remainingopenings can cause serious injury due to electrical and hot partsinside the unit.

■ The service panel of the switch box may only be opened by alicensed electrician for maintenance purposes.

9.2. Automatic test run

When the unit is put into operation (by pressing the button) forthe first time, the system will automatically perform a test run incooling mode. The test run will take up to 3 minutes, during which nospecific indication is given on the user interface.

During the automatic test run, it is important to ensure that the watertemperature does not drop below 10°C, which might activate thefreeze-up protection and thereby prevent the test run to finish.Should the water temperature drop below 10°C, press the /button so the icon is displayed. This will activate the backup heaterduring the automatic test run and raise the water temperaturesufficiently.

If the automatic test run has ended successfully, the system willautomatically resume normal operation.

If there are misconnections or malfunctions, an error code will bedisplayed on the user interface. To resolve the error codes, see"11.3. Error codes" on page 48.

9.3. Test run operation (manual)

If required, the installer can perform a manual test run operation atany time to check correct operation of cooling, heating and domesticwater heating.

Procedure

1 Push the button 4 times so the icon will be displayed.

2 Depending on the indoor unit model, heating operation, coolingoperation or both must be tested as follows (when no action isperformed, the user interface will return to normal mode after 10seconds or by pressing the button once):

• To test the heating operation push the / button so the icon is displayed. To start the test run operation press the

button.• To test the cooling operation push the / button so the

icon is displayed. To start the test run operation press the button.

• To test the domestic water heating operation push the button. The test run operation will start without pressing the

button.

3 The test run operation will end automatically after 30 minutes orwhen reaching the set temperature. The test run operation canbe stopped manually by pressing the button once. If there aremisconnections or malfunctions, an error code will be displayedon the user interface. Otherwise, the user interface will return tonormal operation.

4 To resolve the error codes, see "11.3. Error codes" on page 48.

9.4. Underfloor heating screed dry-out program

This function allows the installer to define and automatically executean "underfloor heating screed dry-out" program.

The program is used to dry-out the screed of an underfloor heatingduring the construction of a house.

Disclaimer

1. Even though the program will be executed automatically thedifferent programmed actions, the installer is responsible tocheck on regular basis the good working of the setup.

2. Please pay attention that the installer has full responsibility toselect the correct program that fits to the type of used screed forthe floor.

Field settings

Underfloor screed dry-out field settings:

■ [F-05] Action number selection

■ [F-06] Heating set point of selected action number [F-05]

■ [F-07] Time of selected action number [F-05] (steps of 12 hours)

■ [F-08] Underfloor heating screed dry-out program enabled (1)/disabled (0)

■ [F-09] (Read only) Latest action number executed.

In case "underfloor heating screed dry-out program" is executedsuccessful then [F-09] has value 21.

NOTICE

When the outdoor unit is put into pump down operation(see the outdoor unit installation manual), the automatictest run flag will be cleared. The next time the system is putinto operation, the automatic test run will be executedagain.

After finishing automatic test run or power ON/OFF, thecompressor will operate in the selected operation modeand continue for certain time (set point on the remotecontroller is overruled during this operation).

INFORMATION

■ To display the last resolved error code, push the button 1 time. Push the button again 4 times toreturn to normal mode.

■ It is not possible to perform a test run if a forcedoperation from the outdoor unit is in progress. Shouldforced operation be started during a test run, the testrun will be aborted.

INFORMATION

Benefit kWh rate power supply cannot be used incombination with "underfloor heating screed dry-outprogram". (In case [d-01] is enabled, [F-08] can not be set.)

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Getting started

■ Each action is executed with a programmed heating set point fora programmed time (steps of 12 hours).

■ A maximum of 20 different actions can be programmed.

■ The program is activated in the test run operation.

■ When the program is stopped by an error or an operation switchoff or a power failure, the U3 error code will be displayed.To resolve the error codes, see "11.3. Error codes" on page 48.

Procedure

Example of program:

H Heating set pointt Time

(1) Action number 1(2) Action number 2

1 Set field settings

■ The different actions are programmed as follows:(refer to "8.9. Field settings" on page 26 to know how tochange the field settings)

1 Set in [F-05] (Action number), the action to be programmed,example 1.Save the new value by pressing the button.

2 Set in [F-06] (Heating set point of selected action number[F-05]), example 25°C.Save the new value by pressing the button.

3 Set in [F-07] (Time of selected action number [F-05]),example 24 hours.Save the new value by pressing the button.

4 Repeat step 1 through 3 to program all the actions.

■ Consult the different actions to confirm good setting valuesas follows:(Refer to "8.9. Field settings" on page 26 to know how tochange the field settings)

1 Set in [F-05] (Action number), the action to be consulted,example 1.Save the new value by pressing the button.

2 Consult [F-06] (Heating set point of selected number [F-05])

3 Consult [F-07] (Time of selected number [F-05]), example 24hours.

4 Repeat step 1 through 3 to consult all the actions.

■ Enable the "underfloor heating screed dry-out program" asfollows:

1 Set in [F-08] (Underfloor heating screed dry-out programenabled/disabled) to 1 (enabled).

2 When finished, press the button to exit the FIELD SETMODE.

2 Activate

1 Push the button 4 times so the icon will bedisplayed.

2 To start the "Underfloor heating dry-out program" press the button.

3 The "Underfloor heating dry-out program" will start anddisplay the action and temperature setting of actionnumber 1. The icon is also displayed.

3 During activation

The underfloor heating dry-out program will automatically runtrough all programmed actions.

4 End

1 When all actions are executed, the program will automaticallybe stopped by switching off the unit and the icon will bedisappeared.

2 When the (Underfloor heating dry-out program) has endedsuccessfully the [F-09] will have value 21.

INFORMATION

■ The not set actions will not be programmedbecause these actions has time [F-07] equal to 0hours as default.

■ So in case to many actions are programmed andthe quantity needs to be reduced, set the time[F-07] to 0 hours of the actions that does notneed to be executed.

[F-07]=24 h [F-07]=48 h

[F-06]=25°C [F-06]=35°C(1) (2)

(1) (2)

t

H

INFORMATION

The activation of the "Underfloor heating screeddry-out program" is similar to the starting the Test runoperation

INFORMATION

■ When the program is stopped by an error, by anoperation switch off or by a power failure, then the U3error will be displayed. To resolve the error codes, see "11.3. Error codes" onpage 48.In this case [F-09] (Latest action number executed)will contain the latest action executed.

■ [F-08] The "Underfloor heating screed dry-outprogram enabled (1)/disabled (0)" is always set to 0(disable) when a program has been started once. Thismeans that in case a second time an underfloorheating screed dry-out program must be started then[F-08] needs to be set again.

EKHBH/X016BBIndoor unit for air to water heat pump system4PW62572-1B – 05.2011

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44

10. MAINTENANCE AND SERVICE

In order to ensure optimal availability of the unit, a number of checksand inspections on the unit and the field wiring have to be carried outat regular intervals.

This maintenance shall be carried out by the installer or serviceagent.

10.1. Maintenance activities

Cautions before obtaining maintenance and service

Opening the unit

To execute the maintenance activities as mentioned below, it is onlyrequired to remove the indoor unit cover. See "5.1. Opening theindoor unit" on page 10 for removing the front panel and removing theswitch box.

Maintenance and service

The described checks must be executed at least once a year.

1 Water pressure

Check if the water pressure is above 1 bar. If necessary addwater.

2 Water filter

Clean the water filter.

3 Water pressure relief valve

Check for correct operation of the pressure relief valve byturning the red knob on the valve counter-clockwise:

■ If you do not hear a clacking sound, contact your local dealer.

■ In case the water keeps running out of the unit, close boththe water inlet and outlet shut-off valves first and then contactyour local dealer.

4 Pressure relief valve hose

Check that the pressure relief valve hose is positionedappropriately to drain the water.If the (optional) drain pan kit is installed, make sure that thepressure relief valve hose end is positioned in the drain pan.

5 Backup heater vessel insulation cover

Check that the backup heater insulation cover is fastened tightlyaround the backup heater vessel.

6 Domestic hot water tank pressure relief valve (field supply)

Applies only to installations with a domestic hot water tank.Check for correct operation of the pressure relief valve on thedomestic hot water tank.

7 Domestic hot water tank booster heater

Applies only to installations with a domestic hot water tank(1).It is advisable to remove lime buildup on the booster heater toextend its life span, especially in regions with hard water. To doso, drain the domestic hot water tank, remove the booster heaterfrom the domestic hot water tank and immerse in a bucket (orsimilar) with lime-removing product for 24 hours.

8 Indoor unit switch box

■ Carry out a thorough visual inspection of the switch box andlook for obvious defects such as loose connections ordefective wiring.

■ Check for correct operation of contactors K1M, K2M, K3M,K5M (applications with domestic hot water tank only) andK4M by use of an ohmmeter. All contacts of these contactorsmust be in open position.

DANGER: ELECTRIC SHOCK

■ Before carrying out any maintenance or repair activity,always switch off the circuit breaker on the supplypanel, remove the fuses or open the protectiondevices of the unit.

■ Make sure that before starting any maintenance orrepair activity, also the power supply to the outdoorunit is switched off.

■ Do not touch live parts for 10 minutes after the powersupply is turned off because of high voltage risk.

■ The heater of the compressor may operate even instop mode.

■ Please note that some sections of the electriccomponent box are hot.

■ Make sure you do not touch a conductive section.

■ Do not rinse the indoor unit. This may cause electricshocks or fire.

■ When service panels are removed, live parts can beeasily touched by accident.Never leave the unit unattended during installation orservicing when service panel is removed.

See "2. General safety precautions" on page 2.

NOTICE

Touch a metal part by hand (such as the stop valve) inorder to eliminate static electricity and to protect the PCBbefore performing service.

DANGER

■ Do not touch water pipes during and immediately afteroperation as the pipes may be hot. Your hand maysuffer burns. To avoid injury, give the piping time toreturn to normal temperature or be sure to wearproper gloves.

■ Do not touch the refrigerant pipes during andimmediately after operation as the refrigerant pipesmay be hot or cold, depending on the condition of therefrigerant flowing through the refrigerant piping,compressor, and other refrigerant cycle parts. Yourhands may suffer burns or frostbite if you touch therefrigerant pipes. To avoid injury, give the pipes time toreturn to normal temperature or, if you must touchthem, be sure to wear proper gloves.

■ Do not touch the internal parts (pump, backup heater,etc.) during and immediately after operation.Your hands may suffer burns if you touch the internalparts. To avoid injury, give the internal parts time toreturn to normal temperature or, if you must touchthem, be sure to wear proper gloves.

See "2. General safety precautions" on page 2.

DANGER: ELECTRICAL SHOCK

See "2. General safety precautions" on page 2.

WARNING

Make sure to always fix the cover with the screws whenremoving the switch box.

DANGER: DO NOT TOUCH PIPING AND INTERNALPARTS

See "2. General safety precautions" on page 2.

(1) Only applicable for tank with built-in electrical booster heater (EKHW*).

WARNING

If the supply cord is damaged, it must be replaced by themanufacturer, its service agent or similary qualifiedpersons to avoid a hazard.

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11. TROUBLESHOOTING

This section provides useful information for diagnosing and correctingcertain troubles which may occur in the unit.

This troubleshooting and related corrective actions may only becarried out by your installer.

11.1. General guidelines

Before starting the troubleshooting procedure, carry out a thoroughvisual inspection of the unit and look for obvious defects such asloose connections or defective wiring.

When a safety device was activated, stop the unit and find out whythe safety device was activated before resetting it. Under nocircumstances safety devices may be bridged or changed to a valueother than the factory setting. If the cause of the problem cannot befound, call your local dealer.

If the pressure relief valve is not working correctly and is to bereplaced, always reconnect the flexible hose attached to the pressurerelief valve, to avoid water dripping out of the unit!

11.2. General symptoms

Symptom 1: The unit is turned on ( LED is lit) but the unit is not heating or cooling as expected

Symptom 2: The unit is turned on but the compressor is not starting (space heating or domestic water heating)

Symptom 3: Pump is making noise (cavitation)

INFORMATION

Refer to the service manual to carry out any service modeoperation.

DANGER

When carrying out an inspection on the switch box of theunit, always make sure that the main switch of the unit isswitched off.

DANGER: ELECTRIC SHOCK

See "2. General safety precautions" on page 2.

WARNING

In order to avoid a hazard due to inadvertent resetting ofthe thermal cut-out, this appliance must not be suppliedthrough an external switching device, such as a timer, orconnected to a circuit that is regularly switched on and offby the utility.

DANGER: DO NOT TOUCH PIPING AND INTERNALPARTS

■ Do not touch water pipes during and immediately afteroperation as the pipes may be hot.

■ Do not touch the refrigerant pipes during andimmediately after operation as the refrigerant pipesmay be hot or cold, depending on the condition of therefrigerant flowing through the refrigerant piping,compressor, and other refrigerant cycle parts.

■ Do not touch the internal parts (pump, backup heater,etc.) during and immediately after operation.

See "2. General safety precautions" on page 2.

INFORMATION

For problems related to the optional solar kit for domesticwater heating, refer to the troubleshooting in theinstallation manual of that kit.

POSSIBLE CAUSES CORRECTIVE ACTION

The temperature setting is not correct.

Check the controller set point.

The water flow is too low. • Check that all shut-off valves of the water circuit are completely open.

• Check if the water filter needs cleaning.

• Make sure there is no air in the system (purge air).

• Check on the manometer that there is sufficient water pressure. The water pressure must be >1 bar (water is cold)

• Check that the pump speed setting is on the highest speed.

• Make sure that the expansion vessel is not broken.

• Check that the resistance in the water circuit is not too high for the pump (refer to "8.8. Setting the pump speed" on page 26).

The water volume in the installation is too low.

Make sure that the water volume in the installation is above the minimum required value (refer to "Checking the water volume and expansion vessel pre-pressure" on page 16).

POSSIBLE CAUSES CORRECTIVE ACTION

The unit must start up out of its operation range (the water temperature is too low).

In case of low water temperature, the system utilizes the backup heater to reach the minimum water temperature first (15°C).• Check that the backup heater

power supply is correct.• Check that the backup heater

thermal fuse is closed.• Check that the backup heater

thermal protector is not activated.• Check that the backup heater

contactors are not broken.

The benefit kWh rate power supply settings and electrical connections do not match.

If [d-01]=1 or 2, the wiring requires specific installation like illustrated in "Connection to a benefit kWh rate power supply" on page 21. Other correctly installed configurations are possible, but are to be specific for the type of benefit kWh rate power supply type at this specific site.

The benefit kWh rate signal was sent by the electricity company.

Wait for the power to return.

POSSIBLE CAUSES CORRECTIVE ACTION

There is air in the system. Purge air.

Water pressure at pump inlet is too low.

• Check on the manometer that there is sufficient water pressure. The water pressure must be >1 bar (water is cold).

• Check that the manometer is not broken.

• Check that the expansion vessel is not broken.

• Check that the setting of the pre-pressure of the expansion vessel is correct (refer to "Setting the pre-pressure of the expansion vessel" on page 17).

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Symptom 4: The water pressure relief valve opens

Symptom 5: The water pressure relief valve leaks

Symptom 6: The user interface displays " " when pressing certain buttons

Symptom 7: Space heating capacity shortage at low outdoor temperatures

Symptom 8: [4-03] and maximum tank set point is not according to the applicable tank

1. In case of domstic hot water tank with built-in electrical boosterheater (EKHW*) and [4-03]=5 or maximum domestic hot waterset point is 60°C, the wrong field setting and logic is activatedaccording to the applicable tank.

2. In case of domestic hot water tank without booster heater(EKHTS) and [4-03]≠5 or maximum domestic hot water set pointis 78°C, the wrong field setting and logic is activated accordingto the applicable tank.

Symptom 9: Temperature values displayed on the remote controller (user interface) are displayed in °F instead of °C

POSSIBLE CAUSES CORRECTIVE ACTION

The expansion vessel is broken. Replace the expansion vessel.

The water volume in the installation is too high.

Make sure that the water volume in the installation is under the maximum allowed value (refer to "Checking the water volume and expansion vessel pre-pressure" on page 16).

POSSIBLE CAUSES CORRECTIVE ACTION

Dirt is blocking the water pressure relief valve outlet.

Check for correct operation of the pressure relief valve by turning the red knob on the valve counter clockwise:• If you do not hear a clacking

sound, contact your local dealer.• In case the water keeps running

out of the unit, close both the water inlet and outlet shut-off valves first and then contact your local dealer.

POSSIBLE CAUSES CORRECTIVE ACTION

The current permission level is set to a level that prevents using the pressed button.

Change the "user permission level" field setting [0-00], see "8.9. Field settings" on page 26.

POSSIBLE CAUSES CORRECTIVE ACTION

Backup heater operation is not activated.

Check that the "backup heater operation status" field setting [4-00] is turned on, see "8.9. Field settings" on page 26.Check whether or not the thermal protector of the backup heater has been activated (refer to Main components, "18. Backup heater thermal protector" on page 11 for location of the reset button).Check if booster heater and backup heater are configured to operate simultaneously (field setting [4-01], see "8.9. Field settings" on page 26).Check whether or not the thermal fuse of the backup heater is blown (refer to "Main components", "19. Backup heater thermal fuse" on page 11 for location of the reset button).

The backup heater equilibrium temperature has not been configured correctly.

Raise the 'equilibrium temperature' field setting [5-01] to activate backup heater operation at a higher outdoor temperature.

Too much heat pump capacity is used for heating domestic hot water (applies only to installations with a domestic hot water tank).

Check that the 'space heating priority temperature' field settings are configured appropriately:• Make sure that the 'space heating

priority status' field setting [5-02] is enabled.

• Raise the 'space heating priority temperature' field setting [5-03] to activate booster heater operation at a higher outdoor temperature.

POSSIBLE CAUSES CORRECTIVE ACTION

At the time of setting DIP switch SS2-2, wrong field wiring caused wrong detection of tank type.

Check all field wiring between indoor unit and tank switch box.

Reset procedure• Power off the indoor unit and put

SS-2 to OFF.• Power on the indoor unit, it means

that the indoor unit will detect no domestic hot water tank.

• Power off the indoor unit and put SS2-2 to ON again.

• Power on the indoor unit and the the indoor unit will detect again the type of tank: tank with built-in electrical booster heater (EKHW*)([4-03] default value will be 3), or tank without electrical booster heater (EKHTS)([4-03] default value will be 5).

POSSIBLE CAUSES CORRECTIVE ACTIONS

You accidentally changed the setting to view the temperature values in °F by pushing the and buttons simultaneously.

To change the display back to °C, push and buttons simultaneously for 5 seconds. Execute same procedure to change back to the °F display. The default temperature display is in °C.

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Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

11.3. Error codes

When a safety device is activated, the user interface LED will beflashing, and an error code will be displayed.

A list of all errors and corrective actions can be found in the tablebelow.

Reset the safety by turning the unit OFF and back ON.

In case this procedure for resetting the safety is not successful,contact your local dealer.

Instruction to turn the unit OFF

User interface mode (heating/cooling )

Domestic water heating mode ( )

Push the button

Push the button

ON ON 1 time 1 time

ON OFF 1 time —

OFF ON — 1 time

OFF OFF — —

Error code Failure cause Corrective action

80 Inlet water temperature thermistor failure (inlet water thermistor broken)

Contact your local dealer.

81 Outlet water temperature thermistor failure (outlet water temperature sensor broken)

Contact your local dealer.

89 Water heat exchanger freeze-up failure (due to water flow too low)

Refer to error code 7H.

Water heat exchanger freeze-up failure (due to refrigerant shortage)

Contact your local dealer.

7H Flow failure (water flow too low or no water flow at all, minimum required water flow is 16 l/min)

• Check that all shut-off valves of the water circuit are completely open.

• Check if the water filter needs cleaning.

• Check that the unit is operating within its operating range (refer to "12. Technical specifications" on page 50).

• Also refer to "6.9. Charging water" on page 17.

• Make sure there is no air in the system (purge air).

• Check on the manometer that there is sufficient water pressure. The water pressure must be >1 bar (water is cold).

• Check that the pump speed setting is on the highest speed.

• Make sure that the expansion vessel is not broken.

• Check that the resistance in the water circuit is not too high for the pump (refer to "8.8. Setting the pump speed" on page 26).

• If this error occurs at defrost operation (during space heating or domestic water heating), make sure that the backup heater power supply is wired correctly and that fuses are not blown.

• If EKHWSU version of domestic hot water tank is installed, check if the setting of the additional thermostat in the tank switch box is correct (≥50°C).

• Check that the pump fuse (FU2) and PCB fuse (FU1) are not blown.

8F Outlet water temperature of indoor unit too high (>75°C) during domestic water heating

• Check that the contactor of the electric backup heater is not short circuited.

• Check that the outlet water thermistor is giving the correct read out.

8H Outlet water temperature of indoor unit too high (>65°C)

• Check that the contactor of the electric backup heater is not short circuited.

• Check that the outlet water thermistor is giving the correct read out.

A1 Indoor unit PCB defective Contact your local dealer.

A5 Too low (during cooling operation) or too high (during heating operation) refrigerant temperature (measured by R3T)

Contact your local dealer.

AA Backup heater thermal protector is open

Reset the thermal protector by pressing the reset button (refer to "5.2. Main components" on page 10 for location of the reset button).

Check the reset button of the thermal protector. If both the thermal protector and the controller are reset, but the AA error code persists, the backup heater thermal fuse has blown.

Contact your local dealer.

AC Booster heater thermal protector is open (applies only to installations with a domestic hot water tank with built-in electrical booster heater (EKHW*))

Reset the thermal protector.

Secondary thermal protector is open (applies only to units with a EKHWSU domestic hot water tank installed)

Reset the thermal protector.

C0 Flow switch failure (flow switch remains closed while pump is stopped)

Check that the flow switch is not clogged with dirt.

C4 Heat exchanger thermistor failure (heat exchanger temperature sensor broken)

Contact your local dealer.

E1 Outdoor unit PCB defective Contact your local dealer.

E3 Abnormal high pressure Check that the unit is operating within its operating range (refer to "12. Technical specifications" on page 50).Contact your local dealer.

E4 Actuation of low pressure sensor Check that the unit is operating within its operating range (refer to "12. Technical specifications" on page 50).Contact your local dealer.

E5 Overload activation of compressor

Check that the unit is operating within its operating range (refer to "12. Technical specifications" on page 50).Contact your local dealer.

E7 Fan lock failure (fan is locked) Check if the fan is not obstructed by dirt. If the fan is not obstructed, contact your local dealer.

E9 Malfunction of electronic expansion valve

Contact your local dealer.

EC Domestic hot water temperature too high (>89°C)

• Check that the contactor of the electric booster heater is not short circuited.

• Check that the domestic hot water thermistor is giving the correct read out.

F3 Too high discharge temperature (e.g. due to outdoor coil blockage)

Clean the outdoor coil. If the coil is clean, contact your local dealer.

H3 Malfunctioning HPS system Contact your local dealer.

H9 Outdoor temperature thermistor failure (outdoor thermistor is broken)

Contact your local dealer.

HC Domestic hot water tank thermistor failure

Contact your local dealer.

J1 Malfunction of pressure sensor Contact your local dealer.

J3 Discharge pipe thermistor failure Contact your local dealer.

J5 Suction pipe outdoor unit thermistor failure

Contact your local dealer.

J6 Aircoil thermistor frost detection failure

Contact your local dealer.

J7 Aircoil thermistor mean temperature failure

Contact your local dealer.

Error code Failure cause Corrective action

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J8 Liquid pipe outdoor unit thermistor failure

Contact your local dealer.

L4 Electric component failure Contact your local dealer.

L5 Electric component failure Contact your local dealer.

L8 Electric component failure Contact your local dealer.

L9 Electric component failure Contact your local dealer.

LC Electric component failure Contact your local dealer.

P1 PCB failure Contact your local dealer.

P4 Electric component failure Contact your local dealer.

PJ Failure of capacity setting Contact your local dealer.

U0 Refrigerant failure (due to refrigerant leak)

Contact your local dealer.

U2 Main circuit voltage failure Contact your local dealer.

U3 Underfloor heating screed dry-out program has been stopped by another error, or by pushing operation off button, or by power failure.

The error can only be reset in the test mode as follows:First, press the button 4 times so the icon will be displayed. Then press the button 1 time. Finally push the

button to exit the test mode.Notes:• In this case [F-09] "Latest

action number executed" will contain the latest action number executed.

• [F-08] "Underfloor heating screed dry-out program enabled (1)/disabled (0)" is always cleared to 0 (disable). This means that in case a second time a "Underfloor heating screed dry-out program" must be started, [F-08] needs to be set again.

U4 Communication failure Contact your local dealer.

U5 Communication failure Contact your local dealer.

U7 Communication failure Contact your local dealer.

UA Communication failure Contact your local dealer.

Error code Failure cause Corrective action

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49EKHBH/X016BB

Indoor unit for air to water heat pump system4PW62572-1B – 05.2011

12. TECHNICAL SPECIFICATIONS

12.1. General

12.2. Electrical specifications

Heating/cooling models (EKHBX) Heating only models (EKHBH)

Nominal capacity• cooling Refer to the Technical Data• heating Refer to the Technical Data

Dimensions H x W x D 922 x 502 x 361 922 x 502 x 361Weight• machine weight 48 kg 48 kg• operation weight 61 kg 61 kg

Connections• water inlet/outlet 1-1/4" MBSP(a)

(a) MBSP = Male British Standard Pipe

1-1/4" MBSP(a)

• water drain hose nipple hose nipple• refrigerant liquid side Ø9.5 mm (3/8 inch) Ø9.5 mm (3/8 inch)• refrigerant gas side Ø15.9 mm (5/8 inch) Ø15.9 mm (5/8 inch)

Expansion vessel• volume 10 l 10 l• maximum working pressure (MWP) 3 bar 3 bar

Pump• type water cooled water cooled• no. of speed 3 3

Sound pressure level Refer to technical data Refer to technical dataInternal water volume 5.5 l 5.5 lPressure relief valve water circuit 3 bar 3 barOperation range - water side• heating +15~+55°C +15~+55°C• cooling +5~+22°C —

Operation range - air side• heating –20~+35°C –20~+35°C• cooling +10~+46°C —• domestic hot water by heat pump –20~+35°C –20~+35°C

Heating/cooling models (EKHBX) Heating only models (EKHBH)

Standard unit (power supply via outdoor unit)• power supply 230 V 50 Hz 1P

Backup heater• power supply See "Connection of the backup heater power supply" on page 20• maximum running current See "Connection of the backup heater power supply" on page 20

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