Lennox LGM Series User Manual

Page 52
XI-Wiring Diagrams and Sequence of Operation
GAS HEAT DIAGRAM
MP
HI COM
Input Heat Capacity 169k − 480k Btuh
Voltage: 208−240/3/60 (Y), 460/3/60 (G)
Supersedes:N/A Form No:
Model: LGM Series RTU − Gas Heat
Rev:0
345678 9102
1
1
5
6
1
MP COM HI
243
3
4
1
2
LTVH−B.1
LTVH−A.2 LTVH−A.1
1 2
212
12345678
12 345678
1 2345678
1
123456
123456
1234
1 23412 12
23
123
1
2
3
1
23
1
2
3
WB−023
1234
WB−005
WHT
WB−006
WB−004
12
RED BLU
2
3
4
1
5
6
BLU
RED
2
LTVH−B.2
WHT
GRY
3
WB−007
WHT
WHT
4
RED
RED
RED RED
GRY
WHT
WHT
GRY
BRN
WHT BRN
REDREDRED
GRY
REDREDRED
WHT
WHT
WHT WHT
BRN BRN
BRN
BRN
BRN
BRN BRN
WHT−RED
WHT−RED
WHT−RED WHT−RED
WHT
WHT
GRY
GRY
BRN BRN
WHT−RED
WHT−RED
PNK
PNK
PNK
PNK
PNK
PNK
YEL
YEL
YEL
YEL
YEL
YEL
PNK PNK
RED
RED
RED
RED
RED
RED
1
WB−021
BLU ORN
BLU
ORN
WB−022
BLU
ORN
DRNWR
DRNWR
DRNWR
13
13
YEL
538086− 01
Re v 0
538086−01
SECTI ON
A
HEATI NG
SECTI ON
B
COOLI NG
WI RI NG DI AGRAM FLOW
COOLI NG
SECTI ON
B3
SECTI ON
C
ACCS
SECTI ON
D
ACCS
A3
DSICTRL 1
GND GND HEAT2
A12
DSICTRL2
24VAC
GND HEAT1
GND
A55
J374
P374
P229
P229
A178
J393
P393
AUXCTRL
24VAC
24VAC GND GND
P229
P228(1)
P216
)2(822P)1(822P
MAIN CTRL
MGV
P406
J406
COM
R1 W1 W2 R2 D1
MGV1 MGV2
GND HEAT4
24VAC GND HEAT3
GND
COM
R1 W1 W2 R2 D1
MGV1 MGV2
J396
P396
P406
J406
J408
P408
J408
P408
GV−M GV−COM GV−HI S47 S47
GV−M GV−COM GV−HI
S69 S69
J407
P407
S10 S10 S21 S21 S99 S99
S100 S100
J407
P407
S18 S18 S45 S45
J410
P410
J410
P410
A
J413
P413
GB
MODBUS
P411
J411
AGB
MODBUS−1
J412 P412
A
G
B
MODBUS−2
P412
J412
P411
J411
MODBUS−2
A
MODBUS−1
B
A
G
GB
J374
P374
L1−LINE LOW1 LOW2 HIGH
L1−LINE
LOW1 LOW2 HIGH
FLAMESENS
FLAMESENS
SPARK SPARK
P21
MODBUS
CABLE
1
P230
P230
P230
P19
P216
MODBUS
CABLE
MODBUS CABLE
LOWTEMPERATURE
VESTIBULE HEATER,
BURNER 1
LOW TEMPERATURE
VESTIBULEHEATER,
BURNER2
LOWTEMPVESTHTR
BURNER1
LOWTEMP VEST HTR
BURNER 2
1
TO P415
B−SECT LOCCC06
1
DENOTES OPTIONAL COMPONENTS ANDWIRING
1
11
FROM F10T1LOAD,
B−SECT LOCNN07
FROM F10T2LOAD,
B−SECT LOCNN07
P229
P230
BLU
BLU ORN
ORN
P228(2)

Lennox LGM Series Specifications

General

Brand	Lennox
Model	LGM Series
Category	Furnace
Language	English