Page 52
X-Wiring Diagrams and Sequence of Operation
GAS HEAT FOR LGT092H-150H UNITS
Y and G Voltage
RED
RED
1
2
DRNWR
PNK
BRN
BLU
BLU
COM
HI
M
1
2345
6
78910
1234 5678
123456
1234 12
132
132
1234
1
P229
2
P229
3
4
P229
5
6
P229
7
6
2
3
1
RED
DRNWR
1
P19
2
LTVH−1
LTVH−2
1
P228
2
P228
WHT
WHT
BLK
BRN
BLU
RED
BRN
WHT
WHT−RED
RED
RED
WHT−RED
WHT−RED
WHT
WHT
BLU
WHT
WHT
RED
GRY
WHT
WHT
BRN
WHT
GRY
WB−001
WB−007
Model: LG* Series RTU − Gas Heat
130k, 180k, 240k BtuH
Voltage: 208/240/3/60(Y),460/3/60(G)
Supersedes: XXXXXX−XX Form No: Rev: 0
RED
RED
GRY
BLU
Y
BLU
GRY
PNK
RED
RED
BLK
A
J413
P413
GB
MODBUS
P411
J411
AGB
MODBUS−1
J374
P374
L1−LINE
LOW 1
LOW 2
HIGH
FLAME SENS
SPARK
1
MODBUS
CABLE
LOW TEMPERATURE
VESTIBULE HEATER,
BURNER 1
1
FROM F10 T1 LOAD,
B−SECT LOC FF09
FROM F10 T2 LOAD,
B−SECT FF09
J412
P412
LOW TEMP VEST HTR
BURNER 1
A
G
B
MODBUS−2
MODBUS CABLE
FROM
S60
DENOTES OPTIONAL COMPONENTS AND WIRING
A3
DSICTRL1
GND
538149−03
SEC
A
HTG
CLG
SEC
B
WI RI NG DI AGRAM FLOW
SEC
B3
CLG
SEC
C
ACCS
SEC
D
ACCS
GND
HEAT2
24VAC
1
GND
HEAT1
GND
A55
J393
P393
MAIN CTRL
MGV
P406
J406
COM
R1
W1
W2
R2
P425
D1
MGV1
MGV2
J408
P408
GV−M
GV−COM
GV−HI
S47
S47
TO
A55.P393
P425
S10
S10
S21
S21
J407
P407
S18
S18
J410
P410
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