Lennox LDT Series User Manual

Page 45
IX-Wiring Diagrams and Sequence of Operation
GAS HEAT DIAGRAM
1
WHT−RED
2
WHT−RED
1 2345
3
BRN
6 78
2
2
4
GRY
1
MP HI COM
1
5
WHT
1
2
COM HI MP
BLU
1
RED
1
234
3
6
WHT−RED
56
2
5
6
2
RED BLU
WB−004
GRY
WHT
23
Input Heat Capacity 169k − 480k Btuh
Voltage: 208−240V/3~/60Hz (Y), 460V/3~/60Hz (G)
Supersedes: N/A Form No:
Model: LGT, LDT Series RTU − Gas Heat
Rev: 0
1
WHT−RED
2
WHT−RED
3
BRN
21
1
4
WHT
WHT
4
GRY
WB−007
7
56
1
1
2
3
8
2
4
3
6
5
5
WHT
1
1
3
2
6
WHT−RED
4
345 678
456
12
2
2
1
1
3
34 1
4
234
12
212
12
RED
1
3
DRNWR
4
RED
RED RED
GRY
WHT
WHT GRY BRN WHT BRN
RED
REDRED
GRY
RED
REDRED
WHT WHT
WHT WHT BRN BRN
BRN
BRN BRN
BRN BRN
5
PNK
PNK PNK
PNK
PNK PNK
YEL
YEL
12
2
YEL
YEL
YEL YEL
PNK PNK
BRN
3
123
6
1
2
3
123
1
7
2
3
WB−023
1
4
234
8
WB−005
WB−006
RED
RED RED
RED
RED RED
DRNWR
BLK
BRN
BLK
WB−022 WB−021
BRN BLK
WHT
DRNWR
12
12
YEL
9 10
2
1
1
P406
J406
24VAC
COM
R1 W1 W2 R2 D1
MGV1 MGV2
GND HEAT4 24VAC GND HEAT3 GND
COM
R1 W1 W2 R2 D1
MGV1 MGV2
P19
J396
P396
A55
J374
P374
24VAC GND
GND
MAIN CTRL
P229
P21
A178
P229
P230
AUX CTRL
MODBUS
CABLE
538225−01
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
J393
P393
P406
J406
J408
P408
1
J408
P408
P229
P216
P228(1)
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
P228(1)
P216
P433
P229
P228(2) P228(2)
P230
A
P433
P230
P230
MODBUS
CABLE
J413
P413
GB
MODBUS
P411
J411
AGB
MODBUS−1
J412 P412
A
G
B
MODBUS−2
P412 J412
MODBUS CABLE
P411
J411
TO P415
B−SECT LOC CC06
A
G
B
MODBUS−1
MODBUS−2
AGB
J374
P374
L1−LINE LOW 1 LOW 2 HIGH
L1−LINE LOW 1 LOW 2 HIGH
FLAME SENS FLAME SENS SPARK SPARK
LOW TEMPERATURE
VESTIBULE HEATER,
BURNER 1
LOW TEMPERATURE
VESTIBULE HEATER,
BURNER 2
LOW TEMP VEST HTR
BURNER 1
LOWTEMPVESTHTR
BURNER 2
1
A3
1
DSI CTRL 1
1
DENOTES OPTIONAL COMPONENTS AND WIRING
P434
11
FROM F10 T1 LOAD,
B−SECT LOC NN07
FROM F10 T2 LOAD,
B−SECT LOC NN07
A12
BRN
BRN BLK
BLK
DSI CTRL 2
24VAC GND HEAT1 GND HEAT2
P432
GND MGV GND
P432
J28
P28
P434
J15
P15

Lennox LDT Series Specifications

General

Brand	Lennox
Model	LDT Series
Category	Air Handlers
Language	English