April, 2005 · B. Service and Troubleshooting Because internal or factory wiring may vary depending on controls manufacturer, the wiring diagrams must be

6-446

April, 2005

WIRING DIAGRAMSModels PDP/BDP gas-fired unit heaters

Diagram SelectionDiagrams are provided for both single and three-phase circuits, and are readily identified in the Selection Table on the following page. The Selection Table enables easy selection of the correct wiring diagram after the electrical components of the unit heater have been determined. The control codes are listed to aid in locating the correct diagram.

Diagram InterchangeabilityThe following gas-fired unit heater wiring diagrams are for either 115-volt, 60-Hertz, single-phase power, or for 230-volt, 60 Hertz, three-phase electrical service.

The 115v/60Hz/1φ diagrams may also be utilized for 230v/60Hz/1φ by substituting 230-volt components for the 115-volt shown.

The 230v/60 Hz/3φ diagrams may be modified to 460v/60 Hz/3φ by adding a 460v to 230v step down transformer and wiring the unit as shown in the wiring “inset” on all 3-phase wiring diagrams.

The 460v/60Hz/3φ diagrams may also be utilized for 575v/60Hz/3φ by substituting 575-volt components for the 460-volt shown.

NOTE: As indicated in every diagram, all wiring must comply with the National Electrical Code and all local codes. All components must agree with their respective power source.

Abbreviations and Symbols

To facilitate interpretation and enable simplification the abbreviations and symbols have been selected as recommended by ANSI (American National Standards Institute) and NEMA (National Electrical Manufacturers Association) standards.

XFMR or TR TransformerV VoltsHz Cycle or Hertzφ PhaseLC Limit ControlTHERM or TH ThermostatMV Main ValvePV Pilot ValveSO Shut OffRC Relay Contact or CoilG GroundH HotSW SwitchEPS Electric Pilot SwitchHI HighLo LowC Common“J” Box Junction BoxH1, H2, etc. Transformer Primary TerminalsSUM Summer Contact (Summer/Winter Switch)WIN Winter Contact (Summer/Winter Switch)S-W Summer/Winter SwitchO.L.C. Overload ContactC.S. Power Venter Centrifugal SwitchFTc Fan Timer ContactSPDT Single-Pole Double-Throw SwitchVA Volt-AmpereW Watts

Wire Color Coding

BK BlackBL BlueR RedW WhiteY YellowX1,X2, etc. Transformer Secondary TerminalsL1, L2, etc. Electric Load TerminalsT1, T2, etc. Starter or Motor Terminals

CAUTIONTurn off all power and gas to unit before wiring. Failure to wire this unit according to this wiring diagram may result in injury to the installer or user. For deviations, contact factory.

Power HP BDP BDP BDP BDP BDP BDP BDP BDP BDP BDP BDP Supply 50 75 100 125 150 175 200 250 300 350 400

115/1 1/4 6.0 6.0 6.0 6.0 6.0 - 6.0 - - - - 230/1 1/4 4.0 4.0 4.0 4.0 4.0 - 4.0 - - - - 200/3 1/4 2.6 2.6 2.6 2.6 2.6 - 2.6 - - - - 230/3 1/4 2.5 2.5 2.5 2.5 2.5 - 2.5 - - - - 460/3 1/4 1.9 1.9 1.9 1.9 1.9 - 1.9 - - - - 575/3 1/4 1.8 1.8 1.8 1.8 1.8 - 1.8 - - - - 115/1 1/3 7.3 7.3 7.3 7.3 7.3 7.3 7.3 7.3 - - - 230/1 1/3 3.8 3.8 3.8 3.8 3.8 3.8 3.8 3.8 - - - 200/3 1/3 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 - - - 230/3 1/3 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 - - - 460/3 1/3 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 - - - 575/3 1/3 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 - - - 115/1 1/2 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 - - - 230/1 1/2 5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3 - - - 200/3 1/2 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 - - - 230/3 1/2 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 - - - 460/3 1/2 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 - - - 575/3 1/2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 - - - 115/1 3/4 13.3 13.3 13.3 13.3 13.3 13.3 13.3 13.3 - - - 230/1 3/4 6.7 6.7 6.7 6.7 6.7 6.7 6.7 6.7 - - - 200/3 3/4 4.1 4.1 4.1 4.1 4.1 4.1 4.1 4.1 - - - 230/3 3/4 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 - - - 460/3 3/4 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6 - - - 575/3 3/4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 - - - 115/1 1 - 15.7 15.7 15.7 15.7 15.7 15.7 15.7 15.7 15.7 - 230/1 1 - 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 - 200/3 1 - 4.9 4.9 4.9 4.9 4.9 4.9 4.9 4.9 4.9 - 230/3 1 - 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 - 460/3 1 - 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 - 575/3 1 - 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6 - 115/1 1-1/2 - - - 17.5 - 17.5 17.5 17.5 17.5 17.5 17.5 230/1 1-1/2 - - - 8.9 - 8.9 8.9 8.9 8.9 8.9 8.9 200/3 1-1/2 - - - 6.1 - 6.1 6.1 6.1 6.1 6.1 6.1 230/3 1-1/2 - - - 6.1 - 6.1 6.1 6.1 6.1 6.1 6.1 460/3 1-1/2 - - - 3.6 - 3.6 3.6 3.6 3.6 3.6 3.6 575/3 1-1/2 - - - 3.1 - 3.1 3.1 3.1 3.1 3.1 3.1 115/1 2 - - - - - - - - - - - 230/1 2 - - - - - - - - - - - 200/3 2 - - - - - 8.1 - 8.1 8.1 8.1 8.1 230/3 2 - - - - - 7.3 - 7.3 7.3 7.3 7.3 460/3 2 - - - - - 4.3 - 4.3 4.3 4.3 4.3 575/3 2 - - - - - 3.5 - 3.5 3.5 3.5 3.5 115/1 3 - - - - - - - - - - - 230/1 3 - - - - - - - - - - - 200/3 3 - - - - - - - - 11.2 11.2 11.2 230/3 3 - - - - - - - - 9.5 9.5 9.5 460/3 3 - - - - - - - - 5.4 5.4 5.4 575/3 3 - - - - - - - - 4.6 4.6 4.6 115/1 5 - - - - - - - - - - - 230/1 5 - - - - - - - - - - - 200/3 5 - - - - - - - - - 16.5 16.5 230/3 5 - - - - - - - - - 14.3 14.3 460/3 5 - - - - - - - - - 7.8 7.8 575/3 5 - - - - - - - - - 6.5 6.5

i

Unit Power Requirements (AMPS) – PDP Models

Unit Power Requirements (AMPS) – BDP Models

Power PDP 30, PDP 75, PDP 125, PDP 175, PDP 250 PDP 300 PDP 350, Supply 50 100 150 200 400

115/1 2.7 3.3 4.0 5.1 7.7 9.8 11.1 208/1 1.3 1.9 1.9 2.8 - - - 208/1 ① 2.4 2.4 2.4 4.8 4.8 7.2 7.2 230/1 1.3 1.9 1.9 2.8 3.7 4.7 5.5 230/1 ① 2.2 2.2 2.2 3.3 4.4 6.5 6.5 208/3 ① 2.4 2.4 2.4 4.8 4.8 7.2 7.2 230/3 ① 2.2 2.2 2.2 3.3 4.4 6.5 6.5 460/3 ① 1.1 1.1 1.1 1.6 2.2 3.3 3.3 575/3 ① 0.9 0.9 0.9 1.3 1.7 2.6 2.6

6-446 — MODELS PDP/BDP

① With accessory transformer.

ii

Wiring Diagram SelectionA. Field and Submittal Wiring Diagram Selection

Wiring in the field changes little when the brand of the controls furnished on the unit heater changes. Select correct wiring diagrams as follows:

1. Determine unit heater model and size.

2. Select control code number from Table 1.

3. Reference unit heater model in the Page Location Index with control code number and determine correct page number for single-phase or three-phase control. Single-phase wiring diagram page numbers are in the upper left of box and three-phase diagrams are in the lower right of box.

4. Wiring diagrams for unit heater accessories are listed in Table 2. Use the accessory diagrams along with the unit wiring diagrams for complete wiring instructions.

B. Service and Troubleshooting

Because internal or factory wiring may vary depending on controls manufacturer, the wiring diagrams must be selected with the series identity number when servicing or troubleshooting a unit heater control system. Wiring diagrams in this bulletin are for unit heaters manufactured after June 2003 and the series identity number is the 5th thru the 7th digits of the unit heater serial number.

EXAMPLE: Serial No. – 01121010697 has a series identity number of 101.

To select the correct wiring diagram:

1. Determine unit heater model and size from serial plate located on the side of the unit.

2. Determine the control code numbers from box marked Control Code, also on the serial plate.

3. Determine the series identity number of the unit heater, then proceed with Step 3 of Field and Submittal Wiring Diagram Selection.

Example SelectionSelect correct single-phase wiring diagram for a PDP175A Control Code 11, series identity number 101.

Locate the Page Location Index which shows the page numbers for PDP and BDP units with series identity number 101 (see page iii). Select the page number where the column for the PDP175 intersects with the line for control code 11. The correct single phase wiring diagram for this unit is found on page 1 in the upper left portion of box. If the unit also had a summer/winter switch the accessory wiring diagram found on page C-2 as per Table 2, would also be required for complete wiring information.

Two-in-one DiagramsTwo wiring diagrams are furnished for each circuit configuration in this manual. Included are a connection diagram at the left for field installation and circuit schematic at the right to aid in continuity and trouble shooting.

The heavier lines in the connection diagram indicate line voltage; the lighter lines indicate low voltage. Solid lines show pre-wiring performed at the factory; dotted lines inform the installer of connections required to put the heater in operation.

Table 1 Control Code Descriptions

Control Code Number Description

11,12,13,14 Single-Stage, Standing Pilot, 100% Shut-Off, Natural Gas

81,82,91,92 Single-Stage, Standing Pilot, 100% Shut-Off, Propane Gas

25,26 Two-Stage, Standing Pilot, 100% Shut-Off, Natural Gas

83,84 Two-Stage, Standing Pilot, 100% Shut-Off, Propane Gas

30,31,32,33 Single-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Natural Gas

85,86,93,94 Single-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Propane Gas

59,60 Mechanical Modulation with Automatic Pilot Ignition, Non-100% Shut-Off, Natural Gas, BDP Only

89,90 Mechanical Modulation with Automatic Pilot Ignition, Non-100% Shut-Off, Propane Gas, BDP Only

63,64 Two-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Natural Gas

87,88 Two-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Propane Gas

Table 2Accessory Wiring Diagram Page Location Index ➀

Page Accessory

C-1 Energy-Saver Kit

C-2 Summer/Winter Switch➀ See paragraph A, step 4 under “Wiring Diagram Selection”.


iii

Models PDP or BDP Page Location Index ➀

Control Model Size (series identity 101) ➀ Code 30 50 75 100 125 150 175 200 250 300 350 400

11 or 12 1 1 1 1 1 1 1 1 1 3 3 2 2 2 2 2 2 2 2 2 4 4 13 or 14 17 17 17 17 17 17 17 17 17 18 18 25 or 26 5 5 5 5 5 5 5 7 7 7 7 7 6 6 6 6 6 6 6 8 8 8 8 8 30 or 31 9 9 9 9 9 9 9 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 32 or 33 19 19 19 19 19 19 19 19 19 19 19 59 or 60 11 11 11 11 11 11 12 12 12 12 12 12 63 or 64 15 15 15 15 15 15 15 15 15 15 15 15 16 16 16 16 16 16 16 16 16 16 16 16 81 or 82 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 83 or 84 5 5 5 5 5 5 5 5 5 5 7 7 6 6 6 6 6 6 6 6 6 6 8 8 85 or 86 9 9 9 9 9 9 9 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 87 or 88 15 15 15 15 15 15 15 15 15 15 15 15 16 16 16 16 16 16 16 16 16 16 16 16 89 or 90 11 11 11 11 11 11 12 12 12 12 12 12 91 or 92 17 17 17 17 17 17 17 17 17 93 or 94 19 19 19 19 19 19 19 19 19 19 19


11 or 12 1 1 1 1 1 1 1 1 3 3 3 3 2 2 2 2 2 2 2 2 4 4 4 4 13 or 14 17 17 17 17 17 17 17 18 18 18 18 25 or 26 30 or 31 9 9 9 9 9 9 9 9 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 10 32 or 33 19 19 19 19 19 19 19 19 19 19 19 59 or 60 13 13 13 13 13 13 13 13 13 13 14 14 14 14 14 14 14 14 14 14 63 or 64 20 20 20 20 20 20 20 20 20 20 20 20 21 21 21 21 21 21 21 21 21 21 21 21 81 or 82 1 1 1 1 1 1 1 1 1 3 3 3 2 2 2 2 2 2 2 2 2 4 4 4 83 or 84 85 or 86 9 9 9 9 9 9 9 9 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 10 87 or 88 20 20 20 20 20 20 20 20 20 20 20 20 21 21 21 21 21 21 21 21 21 21 21 21 89 or 90 13 13 13 13 13 13 13 13 13 13 14 14 14 14 14 14 14 14 14 14 91 or 92 17 17 17 17 17 17 17 17 17 18 18 93 or 94 19 19 19 19 19 19 19 19 19 19 19


11 or 12 3 3 3 3 4 4 4 4 13 or 14 18 18 18 18 25 or 26 30 or 31 9 9 9 9 9 9 9 9 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 10 32 or 33 19 19 19 19 19 19 19 19 19 19 19 59 or 60 63 or 64 81 or 82 3 3 3 3 4 4 4 4 83 or 84 85 or 86 9 9 9 9 9 9 9 9 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 10 87 or 88 89 or 90 91 or 92 18 18 18 18 93 or 94 19 19 19 19 19 19 19 19 19 19 19

➀ Cell format represents single phase or three phase power as shown in the following example. 1-Ph3-Ph


1

6-446 — WIRING DIAGRAMS MODELS PDP/BDP

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Hz/1

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K &

R

Wire

nu

t th

e w

ire

no

t u

se

d.

W

115

V/6

0H

z/1

Ø P

ow

er

Sh

ow

n

Circu

it B

rea

ke

r

(

By O

the

rs)

Se

co

nd

Circu

it

Bre

ake

r R

eq

'd

For

230V

,200V

,1Ø

L1(B

K)

L2

(W)

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

BK

13

FA

CT

OR

Y

FIE

LD

WIR

E N

UT

24

V.

LIN

E

WIR

ING

LE

GE

ND

Fan

Moto

r

* 2

4V

X

fmr

Te

rmin

al

Bo

ard

W

W BK

BL

BL

BL

GV

F

C

T2

T1

RB

L Lim

it

Co

ntr

ol

BL

Gn

d

Pre

ssure

Sw

itch

T-D

Rela

y

HH4

2

R

P

ow

er

Exh

au

st

M

oto

r

J-B

ox

THTR

EC

O

Con

nect

ions

EC

O

Gas

Con

trol

Com

bina

tion

Alte

rnat

e

Sw

itch

Pre

ssur

e

Boa

rd "G

"

Term

inal

Con

nect

ions

EC

O

Boa

rd "

G"

Term

inal

Sw

itch

Pre

ssur

e

Gas

Con

trol

Com

bina

tion

Alte

rnat

eE

CO

TR

TH

So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox

4


5H78233C7 REV A Single-Stage, Standing Pilot, 100% Shut-Off, Three-Phase.

FH

H

TD

Rel

ay

Hea

ter

t°

The

rm

T2 C

V

Lim

it

Con

trol

Pre

ssur

e

Sw

itch

TH

EC

O

TR

Com

bina

tion

Gas

Con

trol

Fan

Mot

or

L3L2

L1

Circ

uit B

reak

er

(B

y O

ther

s)

L1 L

2 L3

230V

/60H

z/3Ø

Pow

er S

how

n

Sta

rter

Coi

lS

tart

er

Ove

rload

T1

G

Xfm

r

230V

24V

Pow

erE

xhau

st

Mot

or

EC

O

TH T

R

E

CO

Con

nect

ion

Com

bina

tion

Gas

Con

trol

L

ow

V

olt

T

herm

(By

Oth

ers

)

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

C

aution

Fa

ilure

to

wire

th

is u

nit a

cco

rdin

g

to t

his

wirin

g d

iag

ram

ma

y r

esu

lt

in in

jury

to

th

e in

sta

ller

or

use

r.

Fo

r d

evia

tio

ns c

on

tact

the

fa

cto

ry.

* A

lte

rna

te X

fmr.

Prim

ary

Xfm

r W

ire

s

23

0V

/60

Hz/1

Ø-B

K &

Y (

OR

O)

20

0V

/60

Hz/1

Ø-B

K &

R

Wire

nu

t th

e w

ire

no

t u

se

d.

3 P

hase

Sta

rter

(By

Oth

ers)

* 2

4V

X

fmr

Pre

ssure

Sw

itch

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

3

TD

Rel

ay

TD

C

124

TD

Rel

ay

TD

C

23

0V

/60

Hz/

3Ø

Po

we

r S

ho

wn

C

ircu

it B

rea

ker

(

By

Oth

ers

)

L1

L2

L3

BR

BK

Facto

ry

Fie

ld

Wire N

ut

24

V.

Lin

e

Wirin

g L

egend

C

L3

L2

L1

Fan

Moto

r

T3

T2

T1

BL

J-B

ox

Te

rmin

al

Bo

ard

W

OBK

BL

BL

BL

GV

F

C

T2

T1

RB

L Lim

it

Co

ntr

ol

Gn

d

R

13

T-D

Rela

y

HH4

2

P

ow

er

Exh

au

st

M

oto

r

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

Gas

Con

trol

Com

bina

tion

Alte

rnat

e

Boa

rd "G

"

Term

inal

TRTH

Sw

itch

Pre

ssur

e

Con

nect

ions

EC

O

EC

O

TH

TR

EC

OA

ltern

ate

Com

bina

tion

Gas

Con

trol

Pre

ssur

e

Sw

itch

Term

inal

Boa

rd "

G"

EC

O

Con

nect

ions

So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

5


5H78233C11 REV B Two-Stage, Standing Pilot, 100% Shut-Off, Single-Phase.

J-B

ox

P

ow

er

Exh

au

st

M

oto

r

R

24 H

H T-D

RE

LA

Y

Gn

d

BL

Lim

it

Co

ntr

ol

BL

R

T1

T2

C

F

VG

BL

BL

BL

BK

W

W

Te

rmin

al

Bo

ard

* 24V

X

fmr

Fan

Moto

r

31

BK

Wiri

ng L

egen

d Line

24V.

Fac

tory

Fie

ld

Wire

Nut

* A

ltern

ate

Xfm

r.

Prim

ary

Xfm

r W

ires

230V

/60H

z/1Ø

-BK

& Y

(O

R O

)

200V

/60H

z/1Ø

-BK

& R

Wire

nut

the

wire

not

use

d.

Cau

tion

Fai

lure

to w

ire th

is u

nit a

ccor

ding

to th

is w

iring

dia

gram

may

res

ult

in in

jury

to th

e in

stal

ler

or u

ser.

For

dev

iatio

ns c

onta

ct th

e fa

ctor

y.

Not

e to

inst

alle

r:

Atta

ch th

is d

iagr

am n

ear

heat

er.

All

wiri

ng m

ust c

ompl

y w

ith n

atio

nal

elec

tric

cod

e an

d al

l loc

al c

odes

.

All

com

pone

nts

mus

t agr

ee w

ith

thei

r re

spec

tive

pow

er s

ourc

e.

Use

105

°C w

ire fo

r re

plac

emen

ts.

21

Low

-Sta

ge

Ope

rato

r

Two-

Sta

ge

The

rm

t°

TD

Rel

ay

Hea

ter

HH

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

Pre

ssur

e

Sw

itch

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

Lim

it

Con

trol

T2

F

C

BL

t°

Hig

h

Low

BA

Hig

h-S

tage

Ope

rato

r

C

115V

/60H

z/1Ø

Pow

er S

how

n

C

ircui

t Bre

aker

(B

y O

ther

s)

Sec

ond

Circ

uit

Bre

aker

Req

'd.

For

230

V,20

0V,1

Ø

L1(B

K)

L2(W

)

Circ

uit B

reak

er

(B

y O

ther

s)

Sec

ond

Circ

uit

Bre

aker

Req

'd.

For

230

V,20

0V,1

Ø

115V

/60H

z/1Ø

Pow

er S

how

n

L1

(BK

)

L2

(W)

T1

G

Xfm

r

115V

24V

21B A

W

Com

bina

tion

Gas

Con

trol

V

Com

bina

tion

Gas

Con

trol

(By

Oth

ers)

T

herm

Low

Vol

t

Tw

o-S

tage

CLo

wH

igh

Som

e m

odels

may h

ave lim

it c

ontr

ol

to p

ressu

re s

witch

wire

ro

ute

d o

uts

ide

of J-b

ox.

W

Sw

itch

Pre

ssure

Fan

Mot

or

TD

C

24

TD

Rel

ay

TD

Rel

ay

Pow

er

Exha

uste

r

Mot

or3

1T

DC

6


5H78233C11 REV B Two-Stage, Standing Pilot, 100% Shut-Off, Three-Phase.

Coi

l

Sta

rter

TD

C

13

Ove

rload

Sta

rter

TD

Rel

ay

TD

Rel

ay

31

TD

C

Mot

or

Exha

uste

r P

ower

24 H

H T-D

Rela

y

31

R

Gn

d

BL

R

T1

T2

C

F

VG

BL

BL

BL

BK

O

W

Bo

ard

Te

rmin

al

J-B

ox

BL

BK

BR

X

fmr

* 2

4V

Sw

itch

Pre

ssure

Co

ntr

ol

Lim

it

P

ow

er

Exh

au

st

M

oto

r

C

L3L2

L1

Not

e to

inst

alle

r:

Atta

ch th

is d

iagr

am n

ear

heat

er.

All

wiri

ng m

ust c

ompl

y w

ith n

atio

nal

elec

tric

cod

e an

d al

l loc

al c

odes

.

All

com

pone

nts

mus

t agr

ee w

ith

thei

r re

spec

tive

pow

er s

ourc

e.

Use

105

°C w

ire fo

r re

plac

emen

ts.

Cau

tion

Fai

lure

to w

ire th

is u

nit a

ccor

ding

to th

is w

iring

dia

gram

may

res

ult

in in

jury

to th

e in

stal

ler

or u

ser.

For

dev

iatio

ns c

onta

ct th

e fa

ctor

y.

Wiri

ng L

egen

d Line

24V.

Fac

tory

Fie

ld

Wire

Nut

T1

T2

T3

Fan

Mot

or

3Ø S

tart

er

(By

Oth

ers)

L3L2

L1

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

Indi

cate

d Te

rmin

al B

oard

Con

nect

ion

Fan

TD

Rel

ay

Hea

ter

HH

Pre

ssur

e

Sw

itch

Lim

it

Con

trol

T2

F

C

230V

/60H

z/3Ø

Pow

er S

how

n

C

ircui

t Bre

aker

(

By

Oth

ers)

L3 L2 L1

C

ircui

t Bre

aker

(

By

Oth

ers)

L1 L

2 L3

230V

/60H

z/3Ø

Pow

er S

how

n

Hig

hLo

wC T

wo-

Sta

ge

Low

Vol

t

T

herm

(By

Oth

ers)

V2

1Lo

w-S

tage

Ope

rato

r

BA

Hig

h-S

tage

Ope

rato

r

Com

bina

tion

Gas

Con

trol

24V

230V

Xfm

r

GT

1

CLo

w

Hig

h

t°t°

The

rm

Two-

Sta

ge

Mot

or

Wire

nut

the

wire

not

use

d.

200V

/60H

z/1Ø

-BK

& R

230V

/60H

z/1Ø

-BK

& Y

(O

R O

)

Prim

ary

Xfm

r W

ires

* A

ltern

ate

Xfm

r.

Gas

Con

trol

Com

bina

tion

W

AB 1 2W

W

So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

7


5H78233C12 REV A Two-Stage, Standing Pilot, 100% Shut-Off, Single-Phase.

J-B

ox

R

24 H

H T-D

Rela

y

Sw

itch

Pre

ssu

re

Gn

d

BL

T1

T2

C

F

VG

BL

BL

BL

BK

W

W

Bo

ard

Te

rmin

al

X

FM

R

* 24V

31

BK

W

M

oto

r

Exh

au

st

P

ow

er

Fan

Moto

r

Lim

it

Co

ntr

ol

RB

L

So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

l to

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

Wiri

ng L

egen

d Line

24V.

Fac

tory

Fie

ld

Wire

Nut

* A

ltern

ate

Xfm

r.

Prim

ary

Xfm

r W

ires

230V

/60H

z/1Ø

-BK

& Y

(O

R O

)

200V

/60H

z/1Ø

-BK

& R

Wire

nut

the

wire

not

use

d.

Cau

tion

Fai

lure

to w

ire th

is u

nit a

ccor

ding

to th

is w

iring

dia

gram

may

res

ult

in in

jury

to th

e in

stal

ler

or u

ser.

For

dev

iatio

ns c

onta

ct th

e fa

ctor

y.

Not

e to

inst

alle

r:

Atta

ch th

is d

iagr

am n

ear

heat

er.

All

wiri

ng m

ust c

ompl

y w

ith n

atio

nal

elec

tric

cod

e an

d al

l loc

al c

odes

.

All

com

pone

nts

mus

t agr

ee w

ith

thei

r re

spec

tive

pow

er s

ourc

e.

Use

105

°C w

ire fo

r re

plac

emen

ts.

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

Low

-Sta

ge

Ope

rato

r

Two-

Sta

ge

The

rm

t°

TD

Rel

ay

Hea

ter

HH

Pre

ssur

e S

witc

hLi

mit

Con

trol

T2

F

C

t°

Hig

h

Low

BA

Hig

h-S

tage

Ope

rato

r

C

TR

TH

EC

O

115V

/60H

z/1Ø

Pow

er S

how

n

C

ircui

t Bre

aker

(B

y O

ther

s)

Sec

ond

Circ

uit

Bre

aker

Req

'd.

For

230

V,20

0V,1

Ø

L1(B

K)

L2(W

)

Circ

uit B

reak

er

(B

y O

ther

s)

Sec

ond

Circ

uit

Bre

aker

Req

'd.

For

230

V,20

0V,1

Ø

115V

/60H

z/1Ø

Pow

er S

how

n

L1

(BK

)

L2

(W)

T1

G

Xfm

r

115V

24V

V

BA

TH T

R

W

Com

bina

tion

Gas

Con

trol

E

CO

Con

nect

ion

EC

O

Com

bina

tion

Gas

Con

trol

(By

Oth

ers)

T

herm

Low

Vol

t

Tw

o-S

tage

CLo

wH

igh

Fan

Mot

or

TD

C

24

TD

Rel

ay

TD

Rel

ay

Pow

er

Exha

uste

r

Mot

or3

1T

DC

8


5H78233C12 REV A Two-Stage, Standing Pilot, 100% Shut-Off, Three-Phase.

Pow

er

Exha

uste

r

Mot

or

TD

C

13

TD

Rel

ay

TD

Rel

ayS

tart

er

Ove

rload

31

TD

C

24 H

H T-D

Rela

y

31

R

Gn

d

BL

R

T1

T2

C

F

VG

BL

BL

BL

BK

O

W

Bo

ard

Te

rmin

al

J-B

ox

BL

BK

BR

X

fmr

* 2

4V

Sw

itch

Pre

ssure

Co

ntr

ol

Lim

it

P

ow

er

Exh

au

st

M

oto

r

W

So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

C

L3L2

L1

* A

ltern

ate

Xfm

r.

Prim

ary

Xfm

r W

ires

230V

/60H

z/1Ø

-BK

& Y

(O

R O

)

200V

/60H

z/1Ø

-BK

& R

Wire

nut

the

wire

not

use

d.

Not

e to

inst

alle

r:

Atta

ch th

is d

iagr

am n

ear

heat

er.

All

wiri

ng m

ust c

ompl

y w

ith n

atio

nal

elec

tric

cod

e an

d al

l loc

al c

odes

.

All

com

pone

nts

mus

t agr

ee w

ith

thei

r re

spec

tive

pow

er s

ourc

e.

Use

105

°C w

ire fo

r re

plac

emen

ts.

Cau

tion

Fai

lure

to w

ire th

is u

nit a

ccor

ding

to th

is w

iring

dia

gram

may

res

ult

in in

jury

to th

e in

stal

ler

or u

ser.

For

dev

iatio

ns c

onta

ct th

e fa

ctor

y.

Wiri

ng L

egen

d Line

24V.

Fac

tory

Fie

ld

Wire

Nut

230V

/60H

z/3Ø

Pow

er S

how

n

C

ircui

t Bre

aker

(

By

Oth

ers)

L3 L2 L1

T1

T2

T3

Fan

Mot

or

3Ø S

tart

er

(By

Oth

ers)

L3L2

L1

C

ircui

t Bre

aker

(

By

Oth

ers)

L1 L

2 L3

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

Indi

cate

d Te

rmin

al B

oard

Con

nect

ion

Fan

Mot

or

230V

/60H

z/3Ø

Pow

er S

how

n

Two-

Sta

ge

The

rm

t°

TD

Rel

ay

Hea

ter

HH

Pre

ssur

e

Sw

itch

Lim

it

Con

trol

T2

F

C

t°

Hig

h

Low

C

Hig

hLo

wC T

wo-

Sta

ge

Low

Vol

t

T

herm

(By

Oth

ers)

T1

G

Xfm

r

230V

24V

V

BA

TH T

R

W

Com

bina

tion

Gas

Con

trol

E

CO

Con

nect

ion

EC

O

Low

-Sta

ge

Ope

rato

r

BA

Hig

h-S

tage

Ope

rato

r

TR

TH

EC

O

Com

bina

tion

Gas

Con

trol

Sta

rter

Coi

l


t°

The

rm

H

TD

Rel

ay

Hea

ter

HF

TD

Rel

ay

TD

C4

2

3

TD

Rel

ay

TD

C

1

W

115

V/6

0H

z/1

Ø P

ow

er

Sh

ow

n

Circu

it B

rea

ke

r

(

By O

the

rs)

Se

co

nd

Circu

it

Bre

ake

r R

eq

'd

Fo

r 2

30

V,2

00

V,1

Ø

L1(B

K)

L2

(W)

BK

13 F

an

Moto

r

* 24V

X

fmr

Te

rmin

al

Board

W

W BK

BL

BL

BL

GV

F

C

T2

T1

RB

L Lim

it

Contr

ol

BL

Gn

d

Pre

ssu

re

Sw

itch

T-D

Rela

y

HH4

2

R

P

ow

er

Exhaust

M

oto

r

J-B

ox

C

aution

Failu

re to w

ire this

unit a

ccord

ing

to this

wirin

g d

iagra

m m

ay r

esult

in inju

ry t

o t

he insta

ller

or

user.

For

devia

tions c

onta

ct th

e facto

ry.

Pow

er

Exh

aust

Mot

or

V

L2

(W)

L1

(BK

)

115V

/60H

z/1Ø

Pow

er S

how

n

Sec

ond

Circ

uit

Bre

aker

Req

'd.

For

230

V,20

0V,1

Ø

Circ

uit B

reak

er

(B

y O

ther

s)

T1

G

C

Xfm

r

115V

24V

T2

Lim

it

Con

trol

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

Pre

ssur

e

Sw

itch

Fan

Mot

or

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

* A

ltern

ate

Xfm

r.

Prim

ary

Xfm

r W

ires

230V

/60H

z/1

Ø-B

K &

Y (

OR

O)

200V

/60H

z/1

Ø-B

K &

R

Wire n

ut th

e w

ire n

ot used.

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

MFA

CT

OR

Y

FIE

LD

WIR

E N

UT

24V

.LIN

E

WIR

ING

LE

GE

ND

D D

TH T

R

W

Gas

Con

trol

Com

bina

tion

Alte

rnat

e

PV

PV

/MV

MV

Com

bina

tion

Gas

Con

trol

Pilo

t

Opera

tor

Ma

in

Opera

tor

P M

C

RBL

YWGO

Igni

tor

BK

RBL

YWGO

Igni

tor

RBL

YWGO

Igni

tor

BK

Igni

tor

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

IGNITION CONTROLLER IGNITION CONTROLLER

IGNITION CONTROLLER IGNITION CONTROLLERS

om

e m

od

els

ma

y h

ave

lim

it c

on

tro

l to

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

(PV

)

(MV

)(M

V/P

V)

(By

Oth

ers

)

T

herm

V

olt

L

ow

MV

PV

/MV

PV

W

Alte

rnat

e

Com

bina

tion

Gas

Con

trol

43

12

MV

MV

/PV

PV

M

1

C

2

P 3

CO

MB

INA

TIO

N G

AS

CO

NT

RO

L

HO

NE

YW

EL

LR

OB

ER

TS

HA

W

5H78233C10 REV A Single-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Single-Phase.

9

10


5H78233C10 REV A Single-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Three-Phase.

t°

The

rm

Igni

tor

Pre

ssure

Sw

itch

W

Te

rmin

al

Bo

ard

L

ow

V

olt

T

herm

(By

Oth

ers

)

TD

Rel

ay

Hea

ter

HH

F

TD

Rel

ay

TD

C

42

3

TD

Rel

ay

TD

C

1

Fan

Mot

or

L3L2

L1

Circ

uit B

reak

er

(B

y O

ther

s)

L1 L

2 L3

230V

/60H

z/3Ø

Pow

er S

how

n

Sta

rter

Coi

lS

tart

er

Ove

rload

V

T1

G

C

Xfm

r

230V

24V

T2

Lim

it

Con

trol

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

Pre

ssur

e

Sw

itch

Pow

erE

xhau

st

Mot

or

Note

to insta

ller:

Attach this

dia

gra

m n

ear

heate

r.

All

wirin

g m

ust

com

ply

with n

ational

ele

ctr

ic c

ode a

nd a

ll lo

cal codes.

All

com

ponents

must agre

e w

ith

the

ir r

esp

ective

po

we

r so

urc

e.

Use 1

05°

wire for

repla

cem

ents

.

C

aution

Failu

re to w

ire this

unit a

ccord

ing

to this

wirin

g d

iagra

m m

ay r

esult

in inju

ry t

o t

he insta

ller

or

user.

For

devia

tions c

onta

ct th

e facto

ry.

* A

lte

rna

te X

fmr.

Prim

ary

Xfm

r W

ire

s

23

0V

/60

Hz/1

Ø-B

K &

Y (

OR

O)

20

0V

/60

Hz/1

Ø-B

K &

R

Wire

nu

t th

e w

ire

no

t u

se

d.

3 P

hase

Sta

rter

(By

Oth

ers)

* 24V

X

fmr

230V

/60H

z/3Ø

Pow

er

Show

n

C

ircu

it B

reake

r

(

By

Oth

ers

)

L1

L2

L3

BR

BK

Facto

ry F

ield

Wire

Nu

t

24V

.Lin

e

Wirin

g L

eg

en

d

C

L3

L2

L1

Fan

Moto

r

T3

T2

T1

BL

J-B

ox

W

OBK

BL

BL

BL

GV

F

C

T2

T1

RB

L Lim

it

Contr

ol

Gn

d

R

13

T-D

Rela

y

HH4

2

P

ow

er

Exhaust

M

oto

r

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

MV

Gas

Con

trol

Com

bina

tion

Alte

rnat

e

PV

DD

W

TH T

R

PV

/MV

Gas

Con

trol

Pilo

t

Opera

tor

Main

Opera

tor

P M

C

RBL

YWGO

Igni

tor

BKRBL

YWGO

Igni

tor

RBL

YWGO

Igni

tor

GN

D

TR

(GN

D)

PV

/MV

SPA

RK

PV

TH

(24V

)

GN

D

24V

(GN

D)

MV

/PV

PV

24V

SPA

RK

MV

MV

HONE

YWEL

LRO

BERT

SHAW

BK

Igni

tor

GN

D

TR

(GN

D)

PV

/MV

SPA

RK

PV

TH

(24V

)

GN

D

24V

(GN

D)

MV

/PV

PV

24V

SPA

RK

MV

MV

HONE

YWEL

LRO

BERT

SHAW

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D



Som

e m

odels

may h

ave lim

it c

ontr

ol

to p

ressure

sw

itch w

ire r

oute

d o

uts

ide

of J-b

ox.

MV

MV

/PV

PV

M 1

C 2

P 3

CO

MB

INA

TIO

N G

AS

CO

NT

RO

L

HO

NE

YW

ELL

RO

BE

RT

SH

AW

(PV

)

(MV

)(M

V/P

V)

MV

PV

/MV

PV

W

Alte

rnat

e

Com

bina

tion

Gas

Con

trol

43

12


5H78233C5 REV B Mechanical Modulation, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Single-Phase.

BK

Com

bina

tion

Gas

Con

trol

Mec

hani

cal

Mod

ulat

ing

Gas

Con

trol

D D

BK

W R

1 2

M

3

C P

C

aution

Fa

ilure

to

wire

th

is u

nit a

cco

rdin

g

to t

his

wirin

g d

iag

ram

ma

y r

esu

lt

in in

jury

to

th

e in

sta

ller

or

use

r.

Fo

r d

evia

tio

ns c

on

tact

the

fa

cto

ry.

Pow

er

Exh

aust

Mot

or

V

L2

(W)

L1

(BK

)

115V

/60H

z/1Ø

Pow

er S

how

n

Sec

ond

Circ

uit

Bre

aker

Req

'd.

For

230

V,20

0V,1

Ø

Circ

uit B

reak

er

(B

y O

ther

s)

T1

G

C

Xfm

r

115V

24V

T2

Lim

it

Con

trol

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

Pre

ssur

e

Sw

itch

Fan

Mot

or

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

* A

ltern

ate

Xfm

r.

Prim

ary

Xfm

r W

ires

230V

/60H

z/1

Ø-B

K &

Y (

OR

O)

200V

/60H

z/1

Ø-B

K &

R

Wire n

ut th

e w

ire n

ot used.

W

115V

/60H

z/1

Ø P

ow

er

Show

n

C

ircuit B

reaker

(

By O

thers

)

Se

co

nd

Circu

it

Bre

ake

r R

eq

'd

Fo

r 2

30

V,2

00

V,1

Ø

L1

(BK

)

L2

(W)

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

MFA

CT

OR

Y

FIE

LD

WIR

E N

UT

24V

.LIN

E

WIR

ING

LE

GE

ND

Fan

Moto

r

* 24V

X

fmr

Term

ina

lB

oa

rd

W BK

BL

BL

BL

GV

F

C

T2

T1

RB

L Lim

it

Contr

ol

BL

Gnd

Pre

ssure

Sw

itch

P

ow

er

Exhaust

M

oto

r

J-B

ox

M DP

Gas

Con

trol

Com

bina

tion

C

Mod

ulat

ing

Mec

hnic

al

Gas

Con

trol

Opera

tor

Main

Opera

tor

Pilo

t

D

BK

RBL

YWGO

Igni

tor

RBL

YWGO

Igni

tor

BK

RBL

YWGO

Igni

tor

RBL

YWGO

Igni

tor

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D



om

e m

od

els

ma

y h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

11

12


5H78233C5 REV B Mechanical Modulation, Intermittent Pilot Ignition, 100% Shut-off with Continuous Retry, Three-Phase.

W

Fan

Mot

or

L3L2

L1

Circ

uit B

reak

er

(B

y O

ther

s)

L1 L

2 L3

230V

/60H

z/3Ø

Pow

er S

how

n

Sta

rter

Coi

lS

tart

er

Ove

rload

V

T1

G

C

Xfm

r

230V

24V

T2

Lim

it

Con

trol

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

Pre

ssur

e

Sw

itch

Pow

er

Exh

aust

Mot

or

Mec

hani

cal

Mod

ulat

ing

Gas

Con

trol

D D

PCM

2 31

Y

BK

BK R

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

C

aution

Fa

ilure

to

wire

th

is u

nit a

cco

rdin

g

to t

his

wirin

g d

iag

ram

ma

y r

esu

lt

in in

jury

to

th

e in

sta

ller

or

use

r.

Fo

r d

evia

tio

ns c

on

tact

the

fa

cto

ry.

* A

ltern

ate

Xfm

r.

Prim

ary

Xfm

r W

ires

230V

/60H

z/1

Ø-B

K &

Y (

OR

O)

200V

/60H

z/1

Ø-B

K &

R

Wire n

ut th

e w

ire n

ot used.

3 P

hase

Sta

rter

(By

Oth

ers)

* 24V

X

fmr

Pre

ssu

re

Sw

itch

W

230V

/60H

z/3Ø

Pow

er

Show

n C

ircu

it B

reake

r

(

By

Oth

ers

)

L1

L2

L3Facto

ry F

ield

Wire N

ut

24V

.Lin

e

Wirin

g L

eg

en

d

C

L3

L2

L1

Fan

Moto

r

T3

T2

T1

BL

J-B

ox

Te

rmin

al

Bo

ard

OBK

BL

BL

BL

GV

F

C

T2

T1

RB

L Lim

it

Co

ntr

ol

Gnd

P

ow

er

Exh

au

st

M

oto

r

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

CMP

Opera

tor

Main

Opera

tor

Pilo

t

DD

Gas

Con

trol

Mod

ulat

ing

Mec

hnic

al

Gas

Con

trol

Com

bina

tion

BK

RBL

YWGO

Igni

tor

RBL

YWGO

Igni

tor

BK

RBL

YWGO

Igni

tor

RBL

YWGO

Igni

tor

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D



So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.


R

W

BK

DM

echa

nica

l

Mod

ulat

ing

Gas

Con

trol

D

Aut

omat

ic

Gas

Con

trol

Aut

omat

ic G

as

Con

trol

Mec

hani

cal

Mod

ulat

ing

Gas

Con

trol

D D

Y

C

aution

Failu

re to w

ire this

unit a

cco

rdin

g

to this

wirin

g d

iagra

m m

ay r

esu

lt

in inju

ry t

o t

he insta

ller

or

user.

For

devia

tions c

onta

ct th

e facto

ry.

Pow

er

Exh

aust

Mot

or

V

L2

(W)

L1

(BK

)

115V

/60H

z/1Ø

Pow

er S

how

n

Sec

ond

Circ

uit

Bre

aker

Req

'd.

For

230

V,20

0V,1

Ø

Circ

uit B

reak

er

(B

y O

ther

s)

T1

G

C

Xfm

r

115V

24V

T2

Lim

it

Con

trol

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

Pre

ssur

e

Sw

itch

Fan

Mot

or

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

* A

lte

rna

te X

fmr.

Prim

ary

Xfm

r W

ire

s

23

0V

/60

Hz/1

Ø-B

K &

Y (

OR

O)

20

0V

/60

Hz/1

Ø-B

K &

R

Wire

nu

t th

e w

ire

no

t u

se

d.

W

11

5V

/60H

z/1

Ø P

ow

er

Show

n

C

ircuit B

reaker

(

By O

thers

)

Se

co

nd

Circu

it

Bre

ake

r R

eq

'd

Fo

r 2

30

V,2

00

V,1

Ø

L1

(BK

)

L2

(W)

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

MFA

CT

OR

Y

FIE

LD

WIR

E N

UT

24

V.

LIN

E

WIR

ING

LE

GE

ND

Fa

n

Mo

tor

* 2

4V

X

fmr

Te

rmin

al

Bo

ard

W BK

BL

BL

BL

GV

F

C

T2

T1

RB

L Lim

it

Contr

ol

BL

Gn

d

Pre

ssu

re

Sw

itch

P

ow

er

Exhaust

M

oto

r

J-B

ox

RBL

YWGO

Igni

tor

BK

RBL

YWGO

RBL

YWGO

Igni

tor

BK

RBL

YWGO

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor



om

e m

od

els

ma

y h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox

5H78233C4 REV A Mechanical Modulation, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Single-Phase.

13

14


W

Aut

omat

ic

Gas

Con

trol

DM

echa

nica

l

Mod

ulat

ing

Gas

Con

trol

D

Y

Aut

omat

ic G

as

Con

trol

Fan

Mot

or

L3L2

L1

Circ

uit B

reak

er

(B

y O

ther

s)

L1 L

2 L3

230V

/60H

z/3Ø

Pow

er S

how

n

Sta

rter

Coi

lS

tart

er

Ove

rload

V

T1

G

C

Xfm

r

230V

24V

T2

Lim

it

Con

trol

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

Pre

ssur

e

Sw

itch

Pow

er

Exh

aust

Mot

or

Mec

hani

cal

Mod

ulat

ing

Gas

Con

trol

D D

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

C

aution

Fa

ilure

to

wire

th

is u

nit a

cco

rdin

g

to t

his

wirin

g d

iag

ram

ma

y r

esu

lt

in in

jury

to

th

e in

sta

ller

or

use

r.

Fo

r d

evia

tio

ns c

on

tact

the

fa

cto

ry.

* A

lte

rna

te X

fmr.

Prim

ary

Xfm

r W

ire

s

23

0V

/60

Hz/1

Ø-B

K &

Y (

OR

O)

20

0V

/60

Hz/1

Ø-B

K &

R

Wire

nu

t th

e w

ire

no

t u

se

d.

3 P

hase

Sta

rter

(By

Oth

ers)

* 2

4V

X

fmr

Pre

ssure

Sw

itch

W

23

0V

/60

Hz/

3Ø

Po

we

r S

ho

wn

C

ircu

it B

rea

ker

(

By

Oth

ers

)

L1

L2

L3

BK

Facto

ry F

ield

Wire N

ut

24

V.

Lin

e

Wirin

g L

egend

C

L3

L2

L1

Fan

Moto

r

T3

T2

T1

BL

J-B

ox

Te

rmin

al

Bo

ard

OBK

BL

BL

BL

GV

F

C

T2

T1

RB

L Lim

it

Co

ntr

ol

Gn

d

P

ow

er

Exh

au

st

M

oto

r

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

BK

RBL

YWGO

Igni

tor

RBL

YWGO

Igni

tor

RBL

YWGO

Igni

tor

BK

Igni

tor

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D



So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

5H78233C4 REV A Mechanical Modulation, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Three-Phase.


15

5H78233C2 REV A Two-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Single-Phase.

J-B

ox

P

ow

er

Exh

au

st

M

oto

r

R

24 H

H T-D

RE

LA

Y

Pre

ssure

Sw

itch

Gn

d

BL

Lim

it

Co

ntr

ol

BL

R

T1

T2

C

F

VG

BL

BL

BL

BK

W

W

Te

rmin

al

Bo

ard

* 2

4V

X

fmr

Fan

Moto

r

WIR

ING

LE

GE

ND

LIN

E2

4V

.FA

CT

OR

Y

FIE

LD

WIR

E N

UT

31

BK

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

L2

(W)

L1(B

K)

Se

co

nd

Circu

it

Bre

ake

r R

eq

'd

For

230V

,200V

,1Ø

115

V/6

0H

z/1

Ø P

ow

er

Sh

ow

n

Circu

it B

rea

ke

r

(

By O

the

rs)

W

* A

lte

rna

te X

fmr

Prim

ary

Xfm

r W

ire

s

23

0V

/60

Hz/1

Ø-B

K &

Y (

OR

O)

20

0V

/60

Hz/1

Ø-B

K &

R

Wire

nu

t th

e w

ire

no

t u

se

d.

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

TD

Rel

ay

Hea

ter

HH

TD

Rel

ay

TD

C F

an

Mot

or4

2

Pre

ssur

e

Sw

itch

Lim

it

Con

trol

T2

24V

115V

Xfm

r

F

C

GT

1

Two-

Sta

ge

The

rm

t° t°

Hig

h

Low

C

Circ

uit B

reak

er

(B

y O

ther

s)

Sec

ond

Circ

uit

Bre

aker

Req

'd.

For

230

V,20

0V,1

Ø

115V

/60H

z/1Ø

Pow

er S

how

n

L1

(BK

) L

2

(W)

V

1TD

Rel

ay

TD

C

3 P

ower

Exh

aust

Mot

or

43

12

Com

bina

tion

Gas

Con

trol

C

aution

Fa

ilure

to

wire

th

is u

nit a

cco

rdin

g

to t

his

wirin

g d

iag

ram

ma

y r

esu

lt

in in

jury

to

th

e in

sta

ller

or

use

r.

Fo

r d

evia

tio

ns c

on

tact

the

fa

cto

ry.

Tw

o-S

tage

Low

Vol

t

T

herm

(By

Oth

ers)

Low

Hig

hC

R

Y

3O

pera

tor

Hig

h-S

tag

e2

Opera

tor

Low

-Sta

ge

1

Opera

tor

Pilo

t4

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

PV

Igni

tor

BK

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor

O G W Y BL

R

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor

BK

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor

O G W Y BL

R



P

M

C

HI

Alte

rnat

e

Com

bina

tion

Gas

Con

trol

PV

MV

PV

/MV

The

rm

"Hig

h"

So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.


16

5H78233C2 REV A Two-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry, Three-Phase.

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

P

ow

er

Exh

au

st

M

oto

r

24 H

H T-D

Rela

y

31

R

Gn

d

Lim

it

Co

ntr

ol

BL

R

T1

T2

C

F

VG

BL

BL

BL

BK

O

W

Te

rmin

al

Bo

ard

J-B

ox

BL

T1

T2

T3

Fan

Moto

r

L1

L2

L3

C

Wirin

g L

egend L

ine

24

V.

Facto

ry

Fie

ld

Wire N

ut

BK

BR

L3

L2

L1

23

0V

/60

Hz/

3Ø

Po

we

r S

ho

wn

C

ircu

it B

rea

ker

(

By

Oth

ers

)

W

TD

Rel

ay

L3L2

L1

Circ

uit B

r eak

er

(B

y O

ther

s)

L1 L

2 L3

Sta

rter

Coi

lS

tart

er

Ove

rload

42

TD

C

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

Fan

Mot

or

230V

/60H

z/3Ø

Pow

er S

how

n

TD

Rel

ay

Hea

ter

HH

Lim

it

Con

trol

T2

F

C

Two-

Sta

ge

The

rm

t° t°

Hig

h

Low

C

T1

G

Xfm

r

230V

24V

V

Pre

ssure

Sw

itch

Com

bina

tion

Gas

Con

trol

21

43

* 2

4V

X

fmr

3 P

hase

Sta

rter

(By

Oth

ers)

* A

lte

rna

te X

fmr.

Prim

ary

Xfm

r W

ire

s

23

0V

/60

Hz/1

Ø-B

K &

Y (

OR

O)

20

0V

/60

Hz/1

Ø-B

K &

R

Wire

nu

t th

e w

ire

no

t u

se

d.

C

aution

Fa

ilure

to

wire

th

is u

nit a

cco

rdin

g

to t

his

wirin

g d

iag

ram

ma

y r

esu

lt

in in

jury

to

th

e in

sta

ller

or

use

r.

Fo

r d

evia

tio

ns c

on

tact

the

fa

cto

ry.

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

Tw

o-S

tage

Low

Vol

t

T

herm

(By

Oth

ers)

Low

Hig

hC

13

Pow

er

Exh

aust

Mot

or

Y

R

TD

Rel

ayT

DC

4P

ilot

Opera

tor

1Low

-Sta

ge

Opera

tor

2H

igh

-Sta

ge

Opera

tor

3

Pre

ssur

e

Sw

itch

RBL

YWGO

Igni

tor

GY

RBL

YWGO

Igni

tor

RBL

YWGO

Igni

tor

BK

RBL

YWGO

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor



P

M

C

HI

Alte

rnat

e

Com

bina

tion

Gas

Con

trol

PV

MV

PV

/MV

The

rm

"Hig

h"

So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

17


5H78233B8 Single-Stage, Standing Pilot, 100% Shut-Off, Three-Phase.

TD

Re

lay

T

DC

TD

Re

lay

T

DC

Com

bina

tion

Gas

Con

trol

TR

TH

Pre

ssur

e

Sw

itch

Lim

it

Con

trol

V

Alte

rnat

e

Com

bina

tion

Gas

Con

trol

21

Term

inal

Boa

rd "

G"

Pre

ssur

e

Sw

itch

W

Pre

ssure

Sw

itch

WBL

TRTH

Com

bina

tion

Gas

Con

trol

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

MW

iri n

g L

egend L

ine

24

V.

Facto

ry

Fie

ld

Wire N

ut

C

aution

Fa

ilure

to

wire

th

is u

nit a

cco

rdin

g

to t

his

wirin

g d

iag

ram

ma

y r

esu

lt

in in

jury

to

th

e in

sta

ller

or

use

r.

Fo

r d

evia

tio

ns c

on

tact

the

fa

cto

ry.

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

31

O.L

.C.

24

T2

F

C

Xfm

r

H1

H2

H3

H4 X

1

X2

X3

X4

46

0V

23

0V

460V

/60H

z/3

ØP

ow

er

Show

n

Fan

Moto

r

L1

L2

L3

Circu

it B

rea

ke

r

(B

y O

the

rs)

L1L2

L3

Sta

rte

r

Co

il

HH

TD

Re

lay

He

ate

r

The

rmt°

230V

Xfm

r

24V

T1

G

Pow

er E

xhau

st M

oto r

Po

we

r

Exh

au

st

Mo

tor

24 H

H T-D

Re

lay

31

R

Gn

d

Lim

it

Co

ntr

ol

BL

R

T1

T2

C

F

VG

BL

W

Te

rmin

al

Bo

ard

24V

Xfm

r

J-B

ox

BL

Low

Volt

Therm

(By

Oth

ers

)

R

T1

T2

T3

Fan

Moto

r

L1

L2

L3

C

OR

BK

Xfm

r

H1

H2

H3

H4 X

1

X2

X3

X4

46

0V

23

0V

46

0V

/60

Hz/

3Ø

Po

we

r S

ho

wn

C

ircu

it B

rea

ker

(B

y O

thers

)

L2

L1

L3

BK

Y

R

3 P

hase

Sta

rter

(By

Oth

ers)

Xfm

r

H1

H2To

L2

X2

X3

To L

1

57

5V

23

0V

Altern

ate

Wirin

g F

or

Entr

ance J

-Box

575V

Tra

nsfo

rmer

To 2

4V X

fmr "

BK

"To

24V

Xfm

r "O

or R

"

BK

Y

To Sta

rte

r

Co

il

R BL

X4

X1

So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

18


5H78233B9 Single-Stage, Standing Pilot Ignition, 100% Shut-Off, Three-Phase.

TD

Re

lay

T

DC

TD

Re

lay

T

DC

EC

O

TR

Com

bina

tion

Gas

Con

trol

TH

Pre

ssur

e

Sw

itch

Lim

it

Con

trol

V

Pre

ssure

Sw

itch

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

MW

iri n

g L

egend L

ine

24

V.

Facto

ry

Fie

ld

Wire N

ut

C

aution

Fa

ilure

to

wire

th

is u

nit a

cco

rdin

g

to t

his

wirin

g d

iag

ram

ma

y r

esu

lt

in in

jury

to

th

e in

sta

ller

or

use

r.

Fo

r d

evia

tio

ns c

on

tact

the

fa

cto

ry.

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

31

O.L

.C.

24

T2

F

C

Xfm

r

H1

H2

H3

H4 X

1

X2

X3

X4

46

0V

23

0V

460V

/60H

z/3

ØP

ow

er

Show

n

Fan

Mo

tor

L1

L2

L3

Circu

it B

rea

ke

r

(B

y O

the

rs)

L1L2

L3

Sta

rte

r

Co

il

HH

TD

Re

lay

He

ate

r

The

rmt°

230V

Xfm

r

24V

T1

G

Pow

er

Exh

aust

Mot

or

Po

we

r

Exh

au

st

Mo

tor

24 H

H T-D

Rela

y

31

R

Gn

d

Lim

it

Co

ntr

ol

BL

R

T1

T2

C

F

VG

BL

W

Te

rmin

al

Bo

ard

24V

Xfm

r

J-B

ox

BL

Low

Volt

Therm

(By

Oth

ers

)

R

T1

T2

T3

Fan

Moto

r

L1

L2

L3

C

OR

BK

Xfm

r

H1

H2

H3

H4 X

1

X2

X3

X4

46

0V

23

0V

46

0V

/60

Hz/

3Ø

Po

we

r S

ho

wn

C

ircu

it B

rea

ker

(

By

Oth

ers

)

L2

L1

L3

BK

Y

R

3 P

hase

Sta

rter

(By

Oth

ers)

Xfm

r

H1

H2To

L2

X2

X3

To L

1

57

5V

23

0V

Altern

ate

Wirin

g F

or

Entr

ance J

-Box

575V

Tra

nsfo

rmer

To 2

4V X

fmr "

BK

"To

24V

Xfm

r "O

or R

"

BK

Y

To Sta

rte

r

Co

il

R BL

X4

X1

EC

O

Con

nect

ion

E

CO

TH T

R

Gas

Con

trol

Com

bina

tion

Gas

Con

trol

Com

bina

tion

Alte

rnat

e

TRTH

Sw

itch

Pre

ssur

e

Con

nect

ions

EC

O

EC

O

Term

inal

Boa

rd "G

"

Con

nect

ions

EC

O

Boa

rd "

G"

Term

inal

Sw

itch

Pre

ssur

e

Gas

Con

trol

Com

bina

tion

Alte

rnat

eE

CO

TR

TH

So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

19


W

C

MP

Op

era

tor

Ma

in

Op

era

tor

Pilo

t

Gas

Con

trol

Com

bina

tion

TD

Re

lay

T

DC

TD

Re

lay

T

DC

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

BL

Wiri n

g L

egend L

ine

24

V.

Facto

ry

Fie

ld

Wire N

ut

W

Pre

ssure

Sw

itch

C

aution

Fa

ilure

to

wire

th

is u

nit a

cco

rdin

g

to t

his

wirin

g d

iag

ram

ma

y r

esu

lt

in in

jury

to

th

e in

sta

ller

or

use

r.

Fo

r d

evia

tio

ns c

on

tact

the

fa

cto

ry.

No

te t

o in

sta

ller:

Att

ach

th

is d

iag

ram

ne

ar

he

ate

r.

All

wirin

g m

ust

co

mp

ly w

ith

na

tio

na

l

ele

ctr

ic c

od

e a

nd

all

loca

l co

de

s.

All

co

mp

on

en

ts m

ust

ag

ree

with

the

ir r

esp

ective

po

we

r so

urc

e.

Use

10

5°

wire

fo

r re

pla

ce

me

nts

.

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

31

O.L

.C.

24

T2

F

C

Xfm

r

H1

H2

H3

H4 X

1

X2

X3

X4

46

0V

23

0V

460V

/60H

z/3

ØP

ow

er

Show

n

Fan

Moto

r

L1

L2

L3

Circu

it B

rea

ke

r

(B

y O

the

rs)

L1L2

L3

Sta

rte

r

Co

il

HH

TD

Re

lay

He

ate

r

V

Lim

it

Con

trol

Pre

ssur

e

Sw

itch

The

rmt°

230V

Xfm

r

24V

T1

G

Pow

er

Exh

aust

Mot

or

Po

we

r

Exh

au

st

Mo

tor

24 H

H T-D

Rela

y

31

R

Gn

d

Lim

it

Co

ntr

ol

BL

R

T1

T2

C

F

VG

BL

W

Te

rmin

al

Bo

ard

24V

Xfm

r

J-B

ox

BL

R

T1

T2

T3

Fan

Moto

r

L1

L2

L3

C

OR

BK

Xfm

r

H1

H2

H3

H4 X

1

X2

X3

X4

46

0V

23

0V

46

0V

/60

Hz/

3Ø

Po

we

r S

ho

wn

C

ircu

it B

rea

ker

(

By

Oth

ers

)

L2

L1

L3

BK

Y

R

3 P

hase

Sta

rter

(By

Oth

ers)

Xfm

r

H1

H2To

L2

X2

X3

To L

1

57

5V

23

0V

Altern

ate

Wirin

g F

or

Entr

ance J

-Box

575V

Tra

nsfo

rmer

To 2

4V X

fmr "

BK

"To

24V

Xfm

r "O

or R

"

BK

Y

To Sta

rte

r

Co

il

R BL

X4

X1

MV

PV

/MV

PV

Gas

Con

trol

Com

bina

tion

Alte

rnat

e

43

12

(By

Oth

ers

)

Therm

Volt

Low

D D

TH T

R

W

Alte

rnat

e

Com

bina

tion

Gas

Con

trol

MV

PV

PV

/MV

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor

O G W Y BL

R BK

ROBE

RTSH

AWHO

NEYW

ELL

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

W BK

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor

O G W Y BL

R



So

me

mo

de

ls m

ay h

ave

lim

it c

on

tro

lto

pre

ssu

re s

witch

wire

ro

ute

d o

uts

ide

o

f J-b

ox.

CO

MB

INA

TIO

N G

AS

CO

NT

RO

L

MV

/PV

MV

HO

NE

YW

EL

LR

OB

ER

TS

HA

W

M1

C2

P3

PV

(MV

/PV

)(M

V)

(PV

)

5H78233B1 REV A Single-Stage, Intermittent Pilot, 100% Shut-Off, with Continuous Retry Three-Phase.

20


5H78233C3 REV A Two-Stage, Intermittent Pilot Ignition, 100% Shut-Off, with Continuous Retry, Single-Phase.

J-B

ox

P

ow

er

Exh

au

st

M

oto

r

R

24 H

H T-D

RE

LA

Y

Gnd

BL

Lim

it

Co

ntr

ol

BL

R

T1

T2

C

F

VG

BL

BL

BL

BK

W

W

Te

rmin

al

Bo

ard

* 24V

X

fmr

Fan

Moto

r

31

BK

L2

(W)

L1

(BK

)

Se

co

nd

Circu

it

Bre

ake

r R

eq

'd

Fo

r 2

30

V,2

00

V,1

Ø

11

5V

/60

Hz/1

Ø P

ow

er

Sh

ow

n

Circu

it B

rea

ke

r

(

By O

the

rs)

W

Tw

o-S

tage

Low

Vol

t

T

herm

(By

Oth

ers)

Low

Hig

hC

Fan

Mot

or

TD

C

24

TD

Rel

ay

TD

Rel

ay

Pow

erEx

haus

ter

Mot

or3

1T

DC

RBL

YWGO

Igni

tor

BK

RBL

YWGO

Igni

tor

BKRBL

YWGO

ROBE

RTSH

AWHO

NEYW

ELL

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor



Wiri

ng L

egen

d Line

24V.

Fac

tory

Fie

ld

Wire

Nut

* A

ltern

ate

Xfm

r.

Prim

ary

Xfm

r W

ires

230V

/60H

z/1Ø

-BK

& Y

(O

R O

)

200V

/60H

z/1Ø

-BK

& R

Wire

nut

the

wire

not

use

d.

Cau

tion

Fai

lure

to w

ire th

is u

nit a

ccor

ding

to th

is w

iring

dia

gram

may

res

ult

in in

jury

to th

e in

stal

ler

or u

ser.

For

dev

iatio

ns c

onta

ct th

e fa

ctor

y.

Not

e to

inst

alle

r:

Atta

ch th

is d

iagr

am n

ear

heat

er.

All

wiri

ng m

ust c

ompl

y w

ith n

atio

nal

elec

tric

cod

e an

d al

l loc

al c

odes

.

All

com

pone

nts

mus

t agr

ee w

ith

thei

r re

spec

tive

pow

er s

ourc

e.

Use

105

°C w

ire fo

r re

plac

emen

ts.

TD

Rel

ay

Hea

ter

HH

UN

IT H

EA

TE

R W

IRIN

G D

IAG

RA

M

Pre

ssur

e

Sw

itch

Indi

cate

s Te

rmin

al B

oard

Con

nect

ion

Lim

it

Con

trol

T2

24V

115V

Xfm

r

F

C

GT

1

Two-

Sta

ge

The

rm

t° t°

Hig

h

Low

C

R BK

Y

Circ

uit B

reak

er

(B

y O

ther

s)

Sec

ond

Circ

uit

Bre

aker

Req

'd.

For

230

V,20

0V,1

Ø

115V

/60H

z/1Ø

Pow

er S

how

n

L1

(BK

)

L2

(W)

M C P

ABW

Com

bina

tion

Gas

Con

trol

BA

D D

TH T

R

W

W

Alte

rnat

e

Com

bina

tion

Gas

Con

trol M

V PV

PV

/MV

The

rm

"Hig

h"

V

P

Ope

rato

r

Lo-S

tage

Ope

rato

r

Pilo

t

CM

BH

i-Sta

ge

Ope

rato

rA

Som

e m

odels

may h

ave lim

it c

ontr

ol

to p

ressu

re s

witch

wire

ro

ute

d o

uts

ide

of J-b

ox.

Sw

itch

Pre

ssure

21


5H78233C3 REV A Two-Stage, Intermittent Pilot Ignition, 100% Shut-Off, with Continuous Retry, Three-Phase.

CH

igh

Low

(By

Oth

ers)

T

herm

Low

Vol

t

Tw

o-S

tage

X

fmr

* 24V

Sw

itch

Pre

ssu

re

W

BR

BK

BL

J-B

ox

Bo

ard

Te

rmin

al

W

OBK

BL

BL

BL

GV

F

C

T2

T1

RB

L

Co

ntr

ol

Lim

it

Gn

d

R

13

T-D

Rela

y

HH4

2

M

oto

r

Exh

au

st

P

ow

er

Fan

Mot

or

TD

C

24

TD

Rel

ay

TD

Rel

ay

Pow

erEx

haus

ter

Mot

or3

1T

DC

RBL

YWGO

Igni

tor

BKRBL

YWGO

RBL

YWGO

Igni

tor

BK

RBL

YWGO

Igni

tor

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

Igni

tor

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D

ROBE

RTSH

AWHO

NEYW

ELL

MV

MV

SPA

RK

24V

PV

MV

/PV

24V

(GN

D)

GN

D

TH

(24V

)

PV

SPA

RK

PV

/MV

TR

(GN

D)

GN

D



V

24V

230V

Xfm

r

GT

1

* A

ltern

ate

Xfm

r.

Prim

ary

Xfm

r W

ires

230V

/60H

z/1Ø

-BK

& Y

(O

R O

)

200V

/60H

z/1Ø

-BK

& R

Wire

nut

the

wire

not

use

d.

Not

e to

inst

alle

r:

Atta

ch th

is d

iagr

am n

ear

heat

er.

All

wiri

ng m

ust c

ompl

y w

ith n

atio

nal

elec

tric

cod

e an

d al

l loc

al c

odes

.

All

com

pone

nts

mus

t agr

ee w

ith

thei

r re

spec

tive

pow

er s

ourc

e.

Use

105

°C w

ire fo

r re

plac

emen

ts.

Cau

tion

Fai

lure

to w

ire th

is u

nit a

ccor

ding

to th

is w

iring

dia

gram

may

res

ult

in in

jury

to th

e in

stal

ler

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C-1

InstallationAll wiring for this control must comply with the National Electric Code and all local codes and ordinances.

Do not locate control on an outside wall or where it will be affected by drafts or radiant heat. It does not require level mounting.

1. Remove front cover and one wiring access knockout from control.

2. Attach control to mounting surface with three screws through back of case. Use a wooden shim for insulation if surface is metal or masonry.

3. Thread two wires through knockout and connect to R and W control terminals. Leads must be long enough to extend to unit heater junction box.

4. Disconnect power to unit heater and open junction box on unit heater. Select correct wiring diagram for unit heater model (and size if applicable) and complete wiring of control to unit.

Operational Check1. Set room thermostat to its lowest setting and restore power

supply to unit heater.

2. Familiarize yourself with the adjustment knob of the energy-saver control. In step 5 you will want to set it at 3-6 degrees (approximately) above the thermostat, but for now, turning the dial clockwise to a lower setting simulates a rise in temperature and only the unit heater fan should come on. If the wiring is correct, the controlled equipment will switch on and off as the temperature dial indicates the approximate space temperature.

3. If the controlled equipment does not start and stop as the thermostat dial is turned, disconnect the power supply and check the wiring and terminal connections.

4. If the controlled equipment operates opposite to the sequence desired, shut off the power and check for reversed leads on the switch.

5. After checkout, reset room thermostat to desired comfort level. Set energy-saver control 3 to 6 degrees above room thermostat (depending on mounting height, room conditions, etc.) for ceiling air circulation.

6-446 — WIRING INSTRUCTIONS FOR ENERGY SAVER CONTROL

W R B

WIRING INSTRUCTIONS:1. Turn off power to unit heater.2. Connect “R” of Energy Saver to

terminal 1 of time delay relay.3. Connect “W” of Energy Saver to

terminal 3 of time delay relay.4. Follow operational check

sequences on prior page.

WIRING INSTRUCTIONS:1. Turn off power to unit heater.2. Connect “R” of Energy Saver to

terminal 2 of time delay relay.3. Connect “W” of Energy Saver to

terminal 4 of time delay relay.4. Follow operational check

sequences on prior page.

1

(on units with 1Ø power supply this is fan motor or on units with 3Ø power supply this is the starter coil)

TD RelayTDC

To XFMR

From power supply

From power supply

Gravity Vented, Propeller and Blower Models – (Single and Three Phase)

W R B

2 4

(on units with 1Ø power supply this is fan motor or on units with 3Ø power supply this is the starter coil)

TD RelayTDC

To XFMR

Power Exhausted, Propeller and Blower Models – (Single and Three Phase)

3

Before proceeding with wiring the accessories described, make sure the unit has been installed, vented piped and wired according to the Installation/Service Manual and Standard Wiring Diagram furnished with the unit heater.


C-2

6-446 — MODELS PDP/BDP TYPICAL SUMMER/WINTER SWITCH WIRING

Before proceeding with wiring the accessories described, make sure the unit has been installed, vented piped and wired according to the Installation/Service Manual and Standard Wiring Diagram furnished with the unit heater.


1. Turn off gas and power supply to unit.

2. Determine which method of summer/winter control is desired, Figure 1, 2 or 3.

3. Wire unit according to the method selected. Note: If the method selected is as described in Figure 3, the factory supplied buss bar between terminals "T2" and "F" must be removed prior to wiring in thermostat and subbase.

4. Check wiring using the Check-Out Procedure.

Check-Out Procedure

With the power and gas supply turned off, set the thermostat to its lowest setting and place the summer/winter switch to the winter position. After making these adjustments proceed as follows:

1. Turn on gas and power supply to the unit. Nothing should happen.

2. Place the summer/winter switch in the summer position. The fan motor should start, except when wired as shown in Figure 3. In that case, after a delay of 30 to 90 seconds, the fan motor should start.

3. While the summer/winter switch is still in the summer position, and with the fan motor running, turn the thermostat up to call for heat. The power exhauster motor should come on, the pressure switch should close, and the main burner should fire. Allow burner to fire for 1 to 2 minutes.

4. Turn the thermostat down again. The main burner should shut off and the fan motor should continue to run. During this step, allow the fan to run at least 90 seconds to make sure it will continue running. Modine units are equipped with a time delay relay and the motor will run 30 to 90 seconds after the time delay relay has been de-energized.

5. After insuring that the fan motor will continue to run in the summer position, and with the thermostat set to its lowest setting, place the summer/winter switch in the winter position and wait for the time delay relay to turn the fan motor off.

6. After the fan motor has stopped, and with the summer/winter switch in the winter position, turn the thermostat up to call for heat. The power exhauster motor should come on, the pressure switch should close, the main burner should fire and after a delay of 30 to 90 seconds, the fan motor should run.

If the above sequence of operation does not occur, recheck all wiring until the necessary correction to the wiring is found and corrected. Set the thermostat to the desired set point and place summer/winter switch in desired position. Unit is now ready for use.

Robertshaw CM260 T-Stat w/ Subbase

SystemAuto

Auto

Off

On

Fan

T1

C

V

F

G

To ThermostatTD Relay

Terminals In Unit J-Box

Terminal Board

On J-Box

To Combination Gas Control or Ignition Control

T2

2 4

BK

Summer/Winter Switch

Blue or

Red

Figure 1Typical Wiring – Summer/Winter Switch (Modine # 78727)

(24v Thermostat, 115v or 200/230v Summer/Winter Switch)

T1

C

V

F

G

To thermostat

Terminal Board

On J-Box


Relay

T2

2 4

Summer/Winter Switch

Relay By Others (24v Relay Coil, Line Volt Contacts)

TD Relay Terminals In J-Box

Figure 2Typical Wiring – Summer/Winter Switch (Modine # 78727)

(24v Thermostat, 24v Summer/Winter Switch)

T1

C

V

F

G

Terminal Board

On J-Box


Wire to Hot Lead of Power

Exhauster Motor

TD RelayTerminal In J-Box

Relay By Others (24v Relay Coil,

Line Volt Contact)

T2

Figure 3Alternate Wiring Using Robertshaw CM260

Thermostat w/SB-3A-1 Subbase(25v Thermostat and Subbase)

(Modine #79187 and #78785 respectively)

3

Relay

W

G

R

For SERVICE contact your local qualified installation and service contractor or appropriate utility company

Commercial HVAC&R Division • Modine Manufacturing Company • 1500 DeKoven Avenue • Racine, Wisconsin 53403-2552 Tel: 1.800.828.4328 (HEAT) • www.modine.com

4/05 - Litho in USA© Modine Manufacturing Company 2005

As Modine Manufacturing Company has a continuous product improvement program, it reserves the right to change design and specifications without notice.

Documents

April, 2005 · B. Service and Troubleshooting Because internal or factory wiring may vary depending on controls manufacturer, the wiring diagrams must be