Xi-Wiring And Operation Sequence - Lennox LGT Series Unit Information

X-Wiring Diagrams and Sequence of Operation
GAS HEAT FOR LGT092H-150H UNITS
Y and G Voltage
A55
MODBUS
A G B
MAIN CTRL
2 7 3 8
1 3 2
J413
J393
P413
P393
MODBUS
CABLE
FROM
S60
P411
P406
J411 J406
1 3 2 2 6
A3
A G B
DSI CTRL 1
MODBUS−1
1 2 3 4 1 2
J407 J410
P407 P410
WHT
5 6 3 2 1 4
J408
P408
P425
2
FROM F10 T1 LOAD,
B−SECT LOC FF09
WB−001
BLU
FROM F10 T2 LOAD,
WB−007
B−SECT FF09
DENOTES OPTIONAL COMPONENTS AND WIRING
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:
4 9 5 10
1 6
LOW TEMP VEST HTR
BURNER 1
LTVH−1
6
P229
5
LTVH−2
1
3 7 4 8 1 5
BLK
6
B
1
7
BRN
G 3
DRNWR
A 2
MODBUS CABLE
1 2 3 4
J374
P374
P19
1 2
P425
BLU
1
LOW TEMPERATURE
VESTIBULE HEATER,
RED P228
1
BLU
RED
WHT
HTG CLG CLG
SEC SEC SEC
A B B3
WI R I N G D I A GRAM F LOW
538149−03
Rev: 0
Page 51
Y
TO
1
A55.P393
1
2
P229
3
4
P229
BURNER 1
1
P228
2
WHT
ACCS ACCS
SEC SEC
C
D