gorenje Heat Pump WATER-TO-WATER Instructions for Installation

1

gorenje

Heat Pump

WATER-TO-WATER

Instructions for Installation and Start-up

Water-to-water Heat Pump

2

1. INDEX


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1. Introduction

These Instructions explain the procedure for installation of the water-to-water heat pump. They

include a description of the start-up procedure that should be carried out by a competent expert

authorised by the manufacturer. Use the following Contents to find the relevant Chapters for the

correct mounting and installation of the pump.


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2. Safety Warnings

The heat pump is NOT firmly fixed to the wood transport palette.

Do not tilt the pump more than 45o during transport.

The sidewalls of the pump are not load-bearing, and must not be loaded during installation.

Before connection, flush the piping of the central heating system.

Install a filter on the heat source inlet in order to protect the evaporator from impurities deposit.

In the water-to-water heat pump, make sure the water quality from the well meets the

requirements for water pureness.

With power supply connection, observe the correct rotation field and the proper diameters of

the cable cords used.

The first start-up must be carried out by an authorised service provider in compliance with the

Installation and Start-up Instructions.

In order to prevent oxidation in the central heating system and heat pump condenser, add an

anti-corrosive agent to the water.

Any repairs and adjustments to the pump must be made by a Gorenje authorised servicing

technician only.

Before any repair, disconnect the pump from the power supply source.

Warning labels are fixed to the rear wall of the heat pump, and

a wiring diagram can be found on the inner side of the metal

cover.


5

Statutory Requirements

This heat pump was made in compliance with the applicable standards and complies with the

related requirements.

The heat pump may be connected to a heat source, heating system or electric power supply, in

compliance with applicable regulations.

Electric connection must be fixed, via a circuit breaker switch that cuts off supply to all conductors.

All conductors must have a diameter that corresponds with the power supply.

The pump must be connected to an adequate earthing connection.


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3. Use

Purpose of Use

The water-to-water heat pump is designed for installation in residential buildings (e.g., when

renovating the boiler room or as a heating source in newly constructed buildings). Underground

water of adequate quality and temperature is used as a heat source.

Operating Principles

Underground water of adequate quality and temperature (17 to 13°C) is claimed by means of

immersion pump from a well, at adequate depth. This water is transferred to the evaporator in the

heat pump. The heat accumulated in the evaporator in the heat pump is transferred to the

refrigerant, cooling down the underground water by 2 to 4°C; the cooled water is then returned to

underground some 15 m away from the point of collection, in the direction of the underground

water flow.

The refrigerant sucked by the electrically driven compressor in the heat pump is transferred to

higher pressure (higher temperature level). The power generated by the compressor is mostly

transferred to the refrigerant.

Refrigerant on the higher temperature level is transferred into condenser, transferring the heat to

heating water. The heating water may be heated up to 55 °).

EVAPORATOR COMPRESSOR CONDENSER

Chart of energy flow through the heat pump unit

Heat from

ambient

Produced

heat for

heating

Electric

energy

EXPANSION VALVE


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4. Tehnical caracteristic

The construction of the heat pump unit allows installation indoors; the unit housing is made of

sheet metal, incorporating an operating panel used for adjustment of the required parameters by

the user. The control unit, located under the upper part of the unit, is used for connection to the

electricity supply and for connection of the circulating pump, temperature probes and mixing

valves.

The unit cooling circuit is filled with R407C refrigerant. This type of refrigerant is non-combustible

and does not contain ozone-depleting substances.

Water-to-water heat pump

Basic component parts of the heat pump

unit:

1. CONTROL UNIT

2. CONDENSER

3. EVAPORATOR

4. COMPRESSOR

5. EXPANSION VALVE

OUTER DIMENSIONS

A depth: 580 mm

B height: 935 mm

C width: 654mm

A

B

C


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Legend

1 – Measuring point – r iser - heating

2 – Heat exchanger (condenser)

3 - Measuring point – return l ine - heating

4 – Heat exchanger

5 – Pressure switch – low pressure

6 – Compressor

7 - Compressor power supply terminal

8 – Compressor return pipe (suction)

9 – Sight glass f it t ing for control of refrigerant f low

10 – Compressor outlet pipe (pressure)

11 – Drying f il ter

12 – Pressure switch


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Legend

1 – Servicing connection (refrigerant pressure at compressor outlet)

2 – Servicing connection (refrigerant pressure at compressor inlet)

3 – Mechanical expansion valve

4 – Servicing connection (refrigerant pressure at evaporator inlet)

5 – Heat exchanger (evaporator)

6 – Flow-rate switch (media f low indicator)

7 - Measuring point - heat source media outlet

8 - Measuring point - heat source media inlet


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Volumes and material – CONDENSER and EVAPORATOR

HPWW7 HPWW9 HPWW12 HPWW14 HPWW18

CONDENSER

Material Pure copperr

AISI316 Pure copper

AISI316 Pure copper

AISI316 Pure copper

AISI316 Pure copper

AISI316

Refrigerant volume (I) 1,13 1,24 1,80 2,36 3,15

Water volume (I) 1,24 1,35 1,92 2,48 3,27

EVAPORATOR

Material Steel

1.4404

(316L)

Steel

1.4404

(316L)

Steel

1.4404

(316L)

Steel

1.4404

(316L)

Steel

1.4404

(316L)

Refrigerant volume (I) 1,1 1,1 1,4 1,6 1,8

Water volume (I) 1,2 1,2 1,9 2,1 2,5


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5. Tehnical caracteristic

UNIT

MODEL HPWW7 HPWW 9 HPWW12 HPWW14 HPWW18

Version

Placing Indoor Indoor Indoor Indoor Indoor

Capacity

Limit operating temperature St.C.

Heated water f low +10 °C do +55 °C

Water (heat source) +7 °C do +25 °C

Heating power/COP

EN 14511 kW/…

pri W7 / W35

7,8/5,0 10,8/5,0 13,2/5,1 16,2/5,2

pri W7 / W55

7,2/2,9 9,9/2,9 12,1/2,8 14,7/3,0

pri W10 / W35

8,4/5,4 11,6/5,4 14,2/5,4 17,7/5,6

pri W10 / W45

8,0/4,1 11,1/4,1 13,7/4,2 16,8/4,3

pri W10 / W55

7,7/3,1 10,6/3,1 13,0/3,1 16,0/3,3

Sound power level dB(A)

Heating water f low rate at internal pressure difference m3/h/Pa

1,46/8400 2,01/9800 2,46/11000 3,06/10500

Refrigerant type R407C R407C R407C R407C R407C

Charging kg 1,6 1,7 1,8 2,1

Oil in compressor Ester oil Ester oil Ester oil Ester oil Ester oil

Volume l 1 1 1,1 1,4 1,4

Pressure switch level

Low pressure bar 2,8 2,8 2,8 2,8 2,8

High pressure bar 28 28 28 28 28

Dimensions and weight of internal unit:


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Length mm 654 654 654 654 654

Depth mm 580 580 580 580 580

Height mm 935 935 935 935 935

Weight kg 86 97 121 137 142

Dimensions and weight of packaged heat pump

Length mm 725 725 725 725 725

Depth mm 710 710 710 710 710

Height mm 1030 1030 1030 1030 1030

Weight kg 109 120 144 160 165

Connection to power supply

Rated voltage/circuit breaker (a l l owed dev ia t i on )

V/A (±10%) 400/10 400/10 400/10 400/16 400/16

Rated electr ic power W10/W35 kW 1,21 1,56 2,15 2,63 3,16

Rated current A 2,18 2,81 3,88 4,75 5,70

Other

Option for passive cooling da da da da da

Conformity mark CE CE CE CE CE

Characteristics of the water-to-water heat pump power depending on the underground water inlet

temperature (with defined data on its flow rate and flow rate of the heating water), are defined in

the Characteristics Charts, which are enclosed as a separate document.


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6. Delivery and Installation

Storage and Transport

Transport the heat pump in an upright position; when absolutely necessary, the pump may be tilted

to a maximum of 45o. Be careful during transport to avoid damage to the housing or to vital parts of

the unit.

The heat pump can also be moved without the use of the palette, by using the openings on the

bottom sidewalls. Push the metal rods through the opening (adequate load-bearing capacity and

max. diameter of 30 mm).

Store the heat pump in an upright position in a dry and clean place.

Placing and Installation

Place the heat pump in a well-ventilated room, avoid exposure to extreme dust and aggressive

substances. Make sure the temperature in the room is never below freezing and the air humidity is

not too high.

Place the heat pump horizontally on a firm floor with adequate load-bearing capacity. The lower

part of the frame should stand firmly on the floor in order to assure adequate sound protection.

Make sure the room has a floor drain.

Place the heat pump in a room where the noise will not disturb the environment, placing the rear

wall of the pump facing the wall. Do not place the heat pump in a room adjacent to a bedroom or

other rooms where the noise could disturb the residents.

Do not install the piping along bedroom walls or walls of other rooms where the noise might disturb

the residents. Let the installation technician mount special damping elements between the unit and

the piping in order to reduce vibration transfer from the unit into the environment. Next to the unit

dimensions, take into account additional space behind, above and to the left and right of the unit,

and especially in front of the unit.


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Make sure there is min. 1 m free space above the unit. Distance from the wall depends on the

position of the connection pipes and electricity supply cables and may be larger if necessary.

Do not put object on cover!


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7. Hydraulic Connection

Water-to-water heat pump connections

DIMENSIONS FOR CONNECTION (mm)

All connections: 5/4˘

Outer threads

A Cable entry for electricity supply

conduits

B Heat source – inlet to heat pump

C Heat source – outlet from heat pump

D Heating water outlet

E Return l ine for heating water

Connection to Heating Circuit

Before connecting the heat pump unit to a heating circuit, make sure to flush the heat pump with

water. This will eliminate eventual solid particles, dust, sealing material remains and other

impurities. Eventual impurities get deposited on the condenser and may cause malfunctions during

operation!

All required elements must be included in the heating circuit (safety valve, pressure metre,

expansion vessel, bleed valve, charging valve, etc.) in order to assure proper operation of the

heating circuit according to the selected hydraulic drawing (see Chapter: Hydraulic Drawings) and

applicable regulations related to installation of heating devices.

After completed connection of the heat pump to the heating circuit, fill the system with water, de-

aerate and test for eventual leakage. The pressure in the cold heating system should be a

minimum of 1 bar. During heating, due to increased volume of the heating water, the pressure may


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increase up to max. 2.5 bar. The increased volume will be absorbed by the expansion vessel,

whose dimensions must correlate with the capacity of the heating system (not all heating circuits

have a related expansion vessel). The safety valve should be triggered when the pressure reaches

3 bar.

Heating Water Minimum Flow Rate

During operation of the heat pump, the minimum required heating water flow rate must be assured!

This can be achieved by using various techniques including correct adjustment of the over-flow

valve or a valve manifold with no pressure differences.

Heat source temperature oC

From To

Max. temperature difference between the pre-flow and the return flow of the heating circuit water oK

7 12 10

13 18 11

19 25 12

If after testing the heating circuit the heat pump fails to operate and if there is danger of freezing,

the heating circuit must be discharged in order to prevent damage to the heating system.


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Borehole fo Pumping the Water (Well)

Water from the underground that is needed for the operation of the water-to-water heat pump is

pumped from the well (borehole) The quantity of the groundwater must correspond to the heat

pump flow rate. The quantity of the ground water, reliability of the source and quality of water

largely depend on geological characteristics of the area; therefore make sure to verify all the

characteristics before making the borehole.

The depth of the borehole depend on the availability of the water source.

Required water pureness

Instal a filter at the heat inlet source on the heat pump to prevent impurities and protect the

evaporator against eventual damages. During the first months of use, the filter should be cleaned

more often. Once the amount of impurities is reduced, the cleaning intervals may be longer.

The underground water must not contain elements that could cause deposits in the heat

exchanger. To prevent depositing of iron in the heat pump system, the uppper limit value is for Iron

< 0,2mg/l and Manganese < 0,1mg/l. Before starting to use the water from the well, send a water

sample to the laboratory for an analyses to make sure the water quality corresponds to required

values. This will reduce the malfunctions to the heat pump system caused by impurities in water.

Use of surface water or salt water is not allowed.


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Borehole for Returning the Water (secondary borehole)

Water that is sligthly cooled (2 to 3oC) is dishcarged from the water pump and returned to the

underground water source. The borehole shall be made on a distance 10 – 15 m along the water

flow direction in order to avoid mixing the warm source (inlet water) and the cold source (outlet

water). The capacity of the secondary borehole must correspond to the capacity of the pumping

well. Let an expert in geology make the boreholes.

Heat pump

Secondary

borehole

Pumping

borehole

Boiler room

Undergroundn water flow


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8. Hydraulic Diagrams

Various applications (for various heat sources and extra features) are presented in the form of

basic hydraulic drawings.

The heat source for each hydraulic diagram can be selected with the adjustment of parameters.

In order to include extra features (solar cells, swimming pool, etc.) the parameters need to be

adjusted accordingly.

The wiring diagrams are basic diagrams and do not include safety elements (expansion vessels,

safety valves, bleed valves, etc.); these should be provided by the installation technician!

Detailed hydraulic drawings with complete elements are composed as separate documents.

Basic Diagrams

The following wiring diagrams can be selected by entering the number of the diagram in parameter

5700 (setting 'Adjustment’ before start, menu 'Configuration'). For operation of the basic diagram,

parameter 5700 must be adjusted and all the sensors connected.

All sensors included in the diagram must be connected. Component parts marked with dashed

lines are optional and are not indispensible for operation.


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Diagram 1: Ground/water heat pump with direct heating circuit.

Multifunction inlets/outlets:

RVS61

Diagram 2: Ground/water heat pump with direct heating circuit, sanitary water tank and Q3 pump.

Multifunctional inlets/outlets:

RVS61


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Diagram 3: Ground/water heat pump with direct heating circuit, sanitary water tank and Q3 reversing valve.


RVS61

Diagram 4: Ground/water heat pump with heat water tank, mixing valve or direct heating circuit.


RVS61

BX1-B4

BX2-B41


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Diagram 5: Ground/water heat pump with heat water tank, sanitary water tank, Q3 pump, and mixing or direct heating circuit.


RVS61

BX1-B4

BX2-B41

Diagram 6: Ground/water heat pump with heat water tank, sanitary water tank, Q3 reversing valve, and mixing or Q2 direct heating circuit.

Mult ifunctional inlets/outlets:

RVS61

BX1-B4

BX2-B41


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Diagram 7: Ground/water heat pump with combined water tank, Q3 pump for sanitary water, and mixing or direct heating circuit.


RVS61

BX1-B4

BX2-B41

Diagram 8: Ground/water heat pump with combined water tank, Q3 reversing valve for sanitary water, and mixing or direct heating circuit.


RVS61

BX1-B4

BX2-B41


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Diagram 9: Ground/water heat pump with combined water tank, Q3 reversing valve for sanitary water, solar collector and mixing or direct heating circuit.


RVS61

QX5-Q5

QX6-K8

BX1-B4

BX2-B41

BX3-B42

BX4-B31

BX5-B6


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Diagram 10: Ground/water heat pump with sanitary water tank, Q3 reversing valve, direct heating circuit and mixing cooling circuit for passive cooling


RVS61 QX3-Y21


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Diagram 11:TČ Ground/water heat pump with sanitary water tank, Q3 pump, hot water tank, mixing or direct heating circuit and mixing cooling circuit for passive cooling.


RVS61

QX2-Y28

QX3-Y21

BX1-B4

BX2-B41

Diagam 23: Ground/water heat pump with combined water tank, with Q3 reversing valve, mixing or direct heating circuit and mixing cooling circuit for passive cooling.


RVS61

QX2-Y28

QX3-Y21

BX1-B4

BX2-B41


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You can start by selecting a wiring diagram that does not comply with your heat pump and change

the heat source for this diagram (example: the ground/water heat pump that you want to include in

the heating system, as shown in diagram 5). Select diagram 5 (menu: Configuration, parameter

5700=5) and set heat source to 'Water' (menu: Configuration, parameter 5800=Water).

If you want to add a second heating circuit, you must add an expansion module. For adding the

second and third mixing heating circuits, you must add two 'zone' controllers and an expansion

module.


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9. Connection to Power Supply

The heat pump must be connected to the power supply grid. Connection to the grid must be made

by an expert in compliance with applicable legislation and local regulations. The heat pump has a

separate power supply line and controls supply line.

Power Supply Line

The installation technician must assure proper electric protection of the heat pump power supply

line. A 3p/16A/C circuit breaker should be used.

The three-phase power line must be made with a 5G2.5 cable cord. The cable cord should be

installed in the heat pump from the rear side via the M25x1.5 cable entry in order to prevent

moving and falling out of the cable cord from the terminal pins located on the electronics holder.

The cable cord should be connected to the DOVOD 3x400 VAC-1X1 terminal pins.

In case of an incorrect sequence of phases, the controller will report the error: 'Electric lock E6'.

Be careful – make sure the phase sequence is correct!

Do not forget to connect the PE earth conduit!

Controls Supply Line

The installation technician must assure proper electric protection of the control line of the pump. A

1p/6A/C circuit breaker should be used.

A single-phase power line must be made with a 3G1.5 cable cord. The cable cord should be

installed in the heat pump from the rear side via the M20x1.5 cable entry in order to prevent

moving and falling out of the cable cord from the terminal pins located on the electronics holder.

The cable cord should be connected to the DOVOD 230 VAC-1X3 terminal pins.

In case of an incorrect sequence of phases, the controller will report the error: 'Electric lock E6'.



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Dovod črpalka izvor (črpalke voda/voda)

Electric protection of the water-to-water (well water supplied) heat pump power supply line must be

provided by the end-user or by the installation technician. Use installation circuit breaker, with

characteristics corresponding the well pump. Electric connection shall be made with cable cord

with adequate cross section diameter. The cable cord should be installed in the heat pump from

the rear side via the M25x1.5 (or the M20x1.5) cable entry in order to prevent moving and falling

out of the cable cord. The cable cord should be connected directly to the contactor 3K2 with

bimetal protection 1F2.


We recommend that the power supply line and the controls supply line be connected to a separate

FI switch, so that in case of power failure, the heating system continues functioning.

Connecting cable cords Minimum diameter of wire cross section

External sensors 0.75 mm, if the difference is larger than 10 m,

the cable cord must be protected and grounded

at both ends. The cable cord must be installed

separately from the 230VAC/400VAC cable

cords (min. 20 cm). Max. length is 60 m.

Electronic expansion valve 1.0 mm, the cable cord must be protected and

grounded at both ends. The cable cord must be

installed separately from the 230VAC/400VAC

cable cords (min. 20 cm). Max. length is 20 m.

Connection of indoor units 1.0 mm, if the difference is larger than 10 m, the

cable cord must be protected and grounded at

both ends. The cable cord must be installed

separately from the 230VAC/400VAC cable

cords (min. 20 cm). If the cable length exceeds

50 m, the cross section should be 1.5 mm. Max.

length is 200 m.


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Connecting Terminal Pins for Heat Pump Controller

When connecting the heat pump to the power supply, the temperature sensors, circulating pumps

and other elements also need to be installed. All elements are connected via inputs/outputs on the

heat pump controller. Connecting cable cords are installed via the cable entries and enclosed

rubber grommets on the rear side of the heat pump.


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Terminal Description Terminal Description

Servicing tool LPB LPB B1 Temperature sensor

heat pump riser l ine

Servicing tool BSB BSB M Ground

n

RF module AVS71.390 X60 B1 Temperature sensor

riser l ine heating circuit 1

Expansions module AVS75.390

X50 M Ground

p

Operating unit (HMI) X30 B71 Temperature sensor

heat pump riser l ine

DB LPB communication data

M Ground

q

MB LPB communication ground

a

B91 Source inlet temperature

CL+ BSB communication data

M Ground

r

CL- BSB communication ground

b

B84 B92

Temperature sensor

evaporator

Source outlet temperature

CL+ Communication data indoor unit 2

M Ground

s

CL- Communication ground indoor unit 3

b

BX1 Multifunctional sensor input BX1

CL+ Communication data indoor unit 1

M Ground

t

CL- Communication ground indoor unit 1


G+ Power supply i llumination indoor unit

b

M Ground

u

H1 Digital/DC 0…10 V input H1


M Ground M Ground

w

H3 Digital/DC 0…10 V input H3

e


B81 Hot gas temperature sensor

M Ground

x

M Ground

f


B3 Temperature sensor sanitary water

M Ground

y

M Ground

h

UX Multifunctional analogue output UX

B9 Temperature sensor ambient temperature

M Ground

z

M Ground

k


32


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10. Electric Wiring Diagrams

Dashed lines in the wiring diagram can be connected by the installation technician on site, if

necessary.

Wiring diagram ground/water


34

Wiring diagram water/water 17


35



36



37



38



39



40



41

A

B

C

D

E

F

G

H

11. Operating of Heat Pump

B

A

H

D

J

GCI E


42

Display

Symbols are displayed on the display screen of the operating unit. The symbols are displayed

according to the selected mode of operation and set parameters.

Displayed symbols

Xxxxxxxxxxxxxxxxxxxxxxxxxxx




43

Additional accessories (purchased separately)

Additional accessories can be purchased separately to provide comfort and easy operation of the

heat pump:

a) ADVANCED ROOM OPERATING UNIT – used for setting the same adjustments as on the

indoor unit,

b) BASIC ROOM OPERATING UNIT – used for setting of the basic adjustments.


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Switching On

When switching on the heat pump for the first time, the

display turns on and the MAIN MENU is displayed.

By pressing individual keys and turning the +/- (E) main

navigation knob you can set various modes of operation of

the heat pump and change parameters.

When switching on the heat pump for the first time, the display turns on and the MAIN MENU is

displayed.

By pressing individual buttons and turning the +/- (E) main navigation knob you can set various

modes of operation of the heat pump and change parameters.

The selection of every setting is confirmed by pressing the OK (D) key. To return to the

MAIN MENU, press the ESC (C) key.


45

Selection of Language

English is set as the default language by the manufacturer. You can change the language selection

of the messages shown on the display at any time.

Press the OK (D) key and Time of Day and Date will

appear on the display.

Turn the +/- (E) main navigation knob to the setting

Operator section.

After confirming the selection, the word Language will

appear on the display. Confirm the selection by pressing

OK (D). The current language selection flashes on the

display.

If you want to change the language selection, turn the

+/- (E) main navigation knob to the selected language

and confirm the selection.


46

Setting Time of Day and Date



Confirm the selection by pressing OK (D). The adjusted

value of Time of Day (HOUR) flashes on the display.

Turn the +/- (E) main navigation knob to the selected

value. Confirm the selection. The MINUTE sign starts

flashing.

Select the required value and confirm.

Turn the +/- (E) main navigation knob one increment to

the RIGHT to set the DATE. Confirm the selection.

The current selection DATE in the month flashes.

Turn the +/- (E) main navigation knob to the required

value. Confirm the selection. The MONTH IN YEAR

sign flashes.

Select required value and confirm.


the RIGHT to set the YEAR. Confirm the selection.

Confirm the selection. The YEAR sign starts flashing.

Select required value and confirm.

Turn the +/- (E) main navigation knob to the required

value. Confirm the selection.

Press the ESC (C) key several times to return to the

MAIN MENU.


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Timer Operation

This program is used for setting DAY and NIGHT

operation modes.

Confirm every selected setting by pressing the OK

(D) key.



Turn the +/- (E) main navigation knob to Timer Operation

– Heating Circuit 1. Confirm the selection.

The sign Pre Selection appears on the display. Confirm

the selection.

Currently selected DAYS IN WEEK flash (from Monday

to Friday), showing which days are covered by Timer

Operation.

Turn the +/- (E) main navigation knob and select the

required days in the week (from Monday until Friday).

Confirm the selection.


the RIGHT to set the START Timer Operation in Day

Mode function. Confirm the selection.

The currently selected time of heat pump operation

starts to flash. Turn the +/- (E) main navigation knob and

set the required time for heat pump operation start in the

day operating regime (for example 08:00) and confirm

selection.


the RIGHT to set the STOP Operation. Confirm the

selection.

The currently selected time of end of heat pump


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operation flashes.

Turn the +/- (E) main navigation knob and set the

required time for end of operation (for example 22:00)

and confirm the selection. Press the ESC (C) key several

times to return to the MAIN MENU.

If the unit is connected to more than one heating circuit,

the Timer settings can be adjusted for each heating

circuit individually (Timer Operation for Heating Circuit 1,

Timer Operation for Heating Circuit 2, etc.).

Outside the time range of the Day Regime Operation,

the heat pump operates in the Night Regime (See

Section: Setting Room Temperature).

Operation Mode Selection – (A) key

This operation mode is used for selection among

various heating modes.

The selected heating mode is indicated with an

underline under the related symbol.

Automatic Operation

In Automatic Operation mode, the room temperature is

controlled by the Timer.

Characteristic features of Automatic Operation mode:

Heating cycles comply with setting of the Timer

Operation (See Section: Timer Operation) and the heat

pimp operates according to temperature settings for day

and night operations (See Section: Setting of Day

Temperature); automatic change to Daylight Saving

Time.


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Continuous Operation Mode – Day and Night Operation

Continuous Operation mode for maintaining the

room temperature at the selected level.

The heating operation is carried out according to the

adjustment of the temperature for day and night

operation mode (See Section: Setting Room

Temperature).

Characteristics of continuous operation:

The heating operation is carried out without Timer

operation.

The temperature in the room can be adjusted on

two levels:

1. In day operation mode, the temperature can be

set in the range from the Night Operation Mode

temperature (factory set to 19°C) up to 30°C.

2. In night operation mode, the temperature can be

set in the range from the Freeze Protection

temperature (factory set to 10°C) up to the Day

Operation Mode temperature .

The difference between the Day and Night

temperature should not bee too large (we

recommend up to 2°C), as only uniform operation of

the heat pump is energy saving and cost effective.


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Heating Switch Off

Characteristics of the Heating Switch Off:

Heating is switched off (automatic operation and

continuous operation mode in day and night operation);

the temperature of operation complies with freeze

protection operation mode (factory set temperature is

10°C), automatic change to Daylight Saving Time. Preparation of Sanitary Water

In this Operation Mode, the temperature of sanitary

water is set.

Press the (B) key and switch on the preparation of

Sanitary Water mode.

The selected operation is indicated with an underline;

sanitary water is heated according to the selected

program.

Press the (B) key once again to switch off the

Preparation of Sanitary Mode. This means that once the

heated water is used up, it will not reheat again. Freeze

Protection is active, (See Section: Heat Pump Operation

Modes).

The temperature of sanitary water can be set in the

range of from 40°C to 55°C. Confirm each selection by

pressing the OK (D) key.



Turn the +/- (E) main navigation knob to Sanitary Water.

Confirm the selection. The currently set temperature of

sanitary water (50°C) flashes. Turn the +/- (E) main

navigation knob to the selected new value (for example

45°C) and confirm the selection. Press the ESC (C) key


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several times to return to the MAIN MENU.

Setting of Room Temperature

a) Quick setting of day temperature (Day Operation

Mode)

Turn the +/- (E) main navigation knob. The currently

selected room temperature flashes on the display.


Once again turn the +/- (E) main navigation knob to the

selected new value (for example 20°C) and confirm the

selection.

b) Setting of room temperature (Day Operation

Mode)

Press the OK (D) key and Time of Daily Setting Point will

appear on the display. Turn the +/- (E) main navigation

knob and confirm the selection.


the RIGHT and set the Night Operation Mode. Confirm

the selection to Heating Circuit 1. Confirm the selection.

The currently selected Night Operation Mode room

temperature flashes on the display.


value and confirm the selection. After each adjustment,

wait for about 2 hours for the room temperature to adapt.


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Switching Between Day and Night Operation Modes (only with

Advanced Room Operating Unit)

A

B

C

D

E

F

G

H

If the room will not be used for a shorter or longer period

of time, press the (F) key to change to Night Operation

Mode. To save energy, set the daily room temperature

to night temperature. Once the room is in full use again,

press the (F) key to activate the original settings.

The (F) key is active only in Automatic operation mode!

Setting Function Holidays



Turn the +/- (E) main navigation knob to Holidays OK1.



the RIGHT. The item Period: Start appears on the

display.

Turn the +/- (E) main navigation knob and set the month

(for example 4 – April), confirm the selection.

Currently selected DAY of month flashes. Turn the +/-

(E) main navigation knob to the selected day in the

month (for example 5) and confirm the selection (the

date when your holidays start). Turn the +/- (E) main

navigation knob one increment to the Right. The item

Period 1: End appears on the display.

Turn the +/- (E) main navigation knob and set the month


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(for example 4 – April), confirm the selection.

The currently selected DAY of month flashes.

Turn the +/- (E) main navigation knob to the selected day

of the month (for example 26) and confirm the selection

(the date of your return from holidays).


the RIGHT. The item Operation Level: Freeze Protection

appears on the display.

This function is active only in Automatic operation mode!

Restart After Failure

In case of a failure caused by malfunction in the

operation of the heat pump, the warning ‘Error’ appears

on the display and the heat pump stops.

Check for the possible causes of failure (See Section:

Malfunctions).

After eliminating the cause of failure, press the (J)

RESET key. In 2 seconds, the operation of the heat

pump is restored. To erase the error messages press the

RESET (J) key.

After resetting the heat pump, all the original settings are

restored. Do not reset the unit during operation. In case

of repeated error messages, consult your service

provider.


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Operating the Heat Pump – Setting Feature “End-user”

The case below indicates that some user levels do not support all

settings (highlighted in the example below, while on the unit they

can not be seen)

Setting the Feature ‘Heating Engineer’


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12. Adjusting the Heating Curve

The heating curve must be adapted to the geographic

area and the design of the building in which it is installed

so that the room temperature is maintained on a stable

level, regardless of the changes in the outside

temperature.

Set the heating curve for each heating circuit. The curve

line can be adapted. In case the set room temperature

with defined ambient conditions is too low, the curve line

can be adapted.



Turn the +/- (E) main navigation knob to Heating Circuit.


Turn the +/- (E) main navigation knob to Heating Curve

Line and confirm the selection.

The currently selected value of the heating curve line

flashes.


value (for example 0.80) and confirm the selection.

Press the (ESC © key to return to the MAIN MENU.

.


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Temperatura ogrevalnega voda

Temperatura okolice

42

-8

0,80

Example: with an outside air temperature of -8°C and a preset heating curve of 0.80, the heating

line temperature demand is 42°C.


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13. Switching on Additional Heat Sources

Switching on Additional Heat Source K27

Using the controller incorporated in the Gorenje heat pump, you can control the switching on (or

off) of the additional heat source (gas furnace, oil heater) depending on the outside temperature.

This will support the heat pump in the process of heating the sanitary water (extra setting) and

heating water, providing energy and cost saving of the heat pump (the decrease of COP reduces

cost efficiency of operation). Once there is no need for sanitary water or heating water, the K27

additional heat source can be disconnected.

Procedure:

Define the controller output as 'Heat demand K27' (user level: 'Setting’ before start-up, menu

'Configuration', parameters from 5890-5896).

Define the temperature range for the switching on and off of the extra heat source (user level OEM,

menu 'Configuration’, parameter 6128 (the unit switches on when the temperature is below the set

value (factory set at 0°C) and parameters 6129 (the unit switches off when the temperature is

below the set value (factory set at -30°C)).

If extra heating is used for the heating of sanitary water, the related 5736 should be set to 'off' (user

level: 'Setting’ before start-up, menu 'Configuration', parameter 5736 to 'off'.

Switching on of Electric Heater in the K6 Sanitary Water Tank

The electric heater in the hot water tank is switched on when sanitary water needs to be heated,

but due to malfunction of the heat pump, this is not possible. Also, the heater is switched on if the

temperature setting for sanitary water is too high and the capacity of the heat pump is insufficient.

In such a case, the heat pump will switch off (because of the high pressure reached) and the

heater will heat the sanitary water to the set temperature.

Procedure:

Define the controller output as 'Electric Heater for K6 Sanitary Water’ (user level: 'Setting’ before

start-up, menu 'Configuration', parameters from 5890-5896).


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Switching on the Electric Heater in the K16 Hot Water Tank

The electric heater in the K16 hot water tank switches on when water in the hot water tank needs

to be heated, but the heat pump failure (Limit Source Temp. Min. Brine (too low of a temperature of

the source)) prevents it. In this case, the heat pump switches off and the water is heated by the

electric heater.

Procedure:

Define the controller output as 'Electric Heater for K6 Hot Water Tank’ (user level: 'Setting’ before

start-up, menu 'Configuration', parameters from 5890-5896).


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14. Malfunctions

MALFUNCTION POSSIBLE CAUSE WHAT TO DO?

Heat pump fails to operate No supply voltage Provide power supply

Operating unit reports error:

3 phase current asymmetrical

Incorrect sequence of phases on the three-phase power input

Change the phase sequence on the three-phase power input

Operating unit fails to operate in spite of power supply to controller

Loose connection between the operating unit and supply cable cord or between the controller and the supply cable cord -

Circuit breaker 1F1 triggered

Repair the loose connection

Replace the circuit breaker

Heat pump failure, error reported on operating unit

Malfunction in operation of individual component parts of the heating system; error identif ied on display

Eliminate the cause of malfunction, reset the operation with operating unit

No heating operation Incorrect sett ing Select required mode of operation, follow the Instructions

No hot sanitary water Incorrect sett ing Select required mode of operation for heating the sanitary water

Heat pump reports error: High Pressure

No heat absorption Bleed the heating system Check the operation of circulation pumps

Check the capacity of the heat exchangers

Reset the heat pump with the Reset knob on the operating unit

Heat pump reports error: Low Pressure

Leakage of refrigerant from the system

Detect the leakage point, restore vacuum and refi l l the system

Heat pump reports error: Max. pressure

No heat absorption Bleed the heating system Check the operation of the circulation pumps

Check the capacity of the heat exchangers

Sanitary water not heated to required temperature

Insufficient capacity of heat exchanger on sanitary water tank

Temperature set too high

Increase capacity of the heat exchanger (replace sanitary water tank)

Reduce required temperature of sanitary water


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15. Maintenance

In order to prevent damages to the heat pump, do not use the pump as a storage surface. Clean

the outer surface of the pump with a damp cloth.

To avoid causing damage to the surface, never use cleaning agents containing coarse particles,

sodium carbonate, acids or chlorines.

Layers of lime scale depositing inside the heat exchanger in the heat pump may cause

malfunctions and failure in operation. To avoid this, make sure the heat exchanger is free of

deposits or remove the deposits and clean the system as described below.

Cleaning of the Heating System

The combination of the steel structure and oxygen in the heating circuit may cause corrosion. Via

the valves, the circulation pump and the plastic pipes, the loose rust particles may enter the

heating system. With a floor heating system, use of impermeable material is mandatory.

We recommend using pipelines made of adequately corrosion resistant material in order to prevent

depositing of rust particles in the heat pump condenser.

Also, heating water may contain sealing material particles and lubricants. If the operation of the

heat pump is impaired, let an expert clean the system.

We recommend flushing the heat exchanger with counter flow.

We recommend using a 5% phosphorous acid solution. For more frequent cleaning, use 5% formic

acid.

To prevent leakage of acid into the heating system, connected the flushing device directly to the

heat pump.

Eventual residues of the cleaning agent may cause damages to the system. To prevent eventual

damages, make sure the system is thoroughly rinsed with neutral media.


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Use acid very carefully and take into account safety regulations and protection measures.

When in doubt about how to use the chemicals, consult the manufacturer or the vendor.

Heat Source System

The water-to-water heat pump must be protected against impurities. Instal a filter at the heat inlet

side on the heat pump. During the first months of use, the filter should be cleaned more often.

Once the amount of impurities is reduced, the cleaning intervals may be longer.

Required water pureness

The underground water must not contain elements that could cause deposits in the heat

exchanger. To prevent depositing of iron in the heat pump system, the uppper limit value is for Iron

< 0,2mg/l and Manganese < 0,1mg/l.

Use of surface water or salt water is not allowed. Consult your local water supplier on the

possibility of using the heat from underground water.


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VALUATION OD CHARACTERISTICS

CONCENTRATION IN THE AMBIENT (mg/l)

COPPER LEAD>13°C

Generated substances (organic)

0 0

Ammonia NH3

< 2 2 to 20 > 20

+ 0 -

+ + 0

Chloride < 300 > 300

+ 0

+ 0

Electric conductivity < 10 µS/cm 10 to 500 µS/cm >500 µS/cm

0 + -

0 + 0

Iron (Fe), dissolved < 0,2 > 0,2

+ 0

+ 0

Free (agressive) carbonic acids

<5 5 to 20 > 20

+ 0 -

+ + 0

Manganese (Mn), dissolved < 0,1 > 0,1

+ 0

+ 0

Nitrate (NO3), dissolved < 100 > 100

+ 0

+ +

PH value < 7,5 7,5 to 9 > 9

0 + 0

0 + +

Oxygene < 2 > 2

+ 0

+ +

Hydrogene sulf ide (H2S) < 0,05 > 0,05

+ -

+ 0

HCO3- / SO42- < 1 > 1

0 +

0 +

Hydrogen carbonate (HCO3-) <70 70 to 300 > 300

0 + 0

+ + 0

Alumminium (Al), dissolved < 0,2 > 0,2

+ 0

+ +

Sulfate Up to 70 70 to 300 > 300

+ 0 -

+ + 0

Sulf ite (SO3), free < 1 + +

Chlorine gas (Cl2) < 1 1 to 5 > 5

+ 0 -

+ + 0

Resistance of copper plates welded with steel plates in the heat exchanger depends on contents of

substances in water + standard good resistance

0 Problems with corrosion may appear, especiall when more factors have value 0 – should not be

used [< lower than, > higher than]


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Documents

gorenje Heat Pump WATER-TO-WATER Instructions for Installation