2-STAGE GAS HEAT FOR UNITS
12345678
PNK
WB−024
WB−015
Input Heat Capacity 70k − 150k Btuh
Voltage: 208−240/3/60 (Y),460/3/60 (G)
Supersedes: N/A Form No:
Model: LGM Series RTU − Gas Heat
Rev: 1.0
YEL
2
4
J19
PNK
1
1
BRN
2
RED
3
BLK
YEL
1234
1
3
P229
23
12
M
34
PUR
WHT
PUR
YEL
YEL
BLK
YEL
LTVH−1LTVH−2
PNK
RED
WB−005
WHT
21
1
4
WHT
WHT
WHT
56
2
3
4
3
6
5
P229
P229
P229
P228
7
6
1
2
3
BLK
BRN
4
HI
COM
1234 12
P228
2
RED
1
RED
GRY
WHT
WHT
RED
RED
RED
GRY
WHT
WHT
WHT−RED
WHT−RED
WHT
GRY
5
BRN
WHT−RED
N O T E S
1
− 5 0 C L O W T E M P E R A T U R E V E S T I B U L E H E A T E R −
O P T I O N A L
2
P 3 7 4 P I N 2 W I R E M A Y B E B L U A N D P I N 4 W I R E
M A Y B E B R N I N S O M E I N S T A N C E S
123
123
BRN
DRNWR
BLK
PNK
WHT
67
1234
8
WB−019
WB−020
WB−018
9 10
P406
J406
COM
R1
W1
W2
R2
D1
MGV1
MGV2
538115−02
SECTI ON
A
HEATI NG
SECTI ON
B
COOLI NG
WI RI NG DI AG RAM FLOW
COOLI NG
SECTI ON
B3
SECTI ON
C
ACCS
SECTI ON
D
ACCS
FROMK1− L1 ON
UNITS W/O HIGHER SCCR,
B−SECT LOC BB05
FROMK1−L2 ON
UNITS W/O HIGHER SCCR,
B−SECT LOC BB05
A55
24VAC
GND
MAIN CTRL
P21
J374
P374
L1−LINE
LOW 1
LOW 2
HIGH
P19
TO K1−L2
TO K1−L1
OR F10T1LOAD
LP CONVERSION
J393
P393
2
J412
P412
A
G
B
MODBUS−2
MODBUS CABLE
J413
P413
GB
MODBUS
P411
J411
AGB
MODBUS−1
J408
P408
1
A
GV−M
GV−COM
GV−HI
S47
S47
S10
S10
S21
S21
J407
P407
S18
S18
J410
P410
FROMK1−L1 ON Y VOLT
UNITS W/O HIGHER SCCR.
FROMT4−L1 LOAD ON G AND J
VOLT UNITS W/O HIGHER SCCR.
B−SECT LOC BB05
J374
P374
L1−LINE
LOW 1
LOW 2
HIGH
FLAME SENS
SPARK
LOWTEMPERATURE
VESTIBULE HEATER,
BURNER
LOWTEMPVEST HTR
BURNER 1
MODBUS
CABLE
1
A3
DSI CTRL 1
DENOTES OPTIONALCOMPONENTS AND WIRING
1
FROM F10 T1 LOAD ON YVOLT
UNITS WITH HIGHER SCCR.
FROMT4−L1 LOAD ON G AND
JVOLT UNITS WITH HIGHER SCCR.
B−SECT LOC GG05
FROM F10 T2 LOAD ON
UNITS WITH HIGHER SCCR,
B−SECT LOC GG05
24VAC
GND
HEAT1
GND
HEAT2
GND
MGV
GND
FROMK1− L1 LOADONYVOLT
UNITS W/O HIGHER SCCR.
FROMT4−L1 LOAD ON G AND J
VOLT UNITS W/O HIGHER SCCR.
B−SECT LOC BB05
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