Lennox LDT Series User Manual

Page 46
GAS HEAT DIAGRAM
T13
12345678
2
2
1
MP HI COM
1
1
2
WHT
COM HI MP
BLU
1
RED
1
234
3
56
5
6
2
RED BLU
WB−004
GRY
WHT
23
600V
230V
WHT
RED
BLK
21
1
4
WHT
WHT
WB−007
7
56
1
1
2
3
8
2
4
3
6
5
1
1
3
2
YEL
4
345 678
456
12
3
34 1
4
2
1
WHT−RED
3412
2
WHT−RED
3
BRN
4
GRY
212
5
WHT
12
RED
1
3
DRNWR
4
RED
RED
2
2
RED
11
GRY
WHT
WHT GRY BRN WHT BRN
RED
REDRED
GRY
RED
REDRED
WHT WHT
WHT WHT BRN BRN
BRN
BRN BRN
BRN BRN
600V
230V
WHT
RED
BLK
5
PNK
6
WHT−RED
PNK
PNK PNK
YEL
YEL
12
2
YEL
YEL
YEL
PNK PNK
BRN
3
BLK
BLK
123
6
1
2
3
123
1
7
2
3
WB−023
1
4
234
1
WHT−RED
2
WHT−RED
8
WB−005
WB−006
3
BRN
RED
RED RED
RED
RED RED
DRNWR
BLK
BRN
BLK
WB−022
4
GRY
WB−021
BRN BLK
5
WHT
WHT
6
WHT−RED
WHT
DRNWR
12
12
YEL
Model: LGT, LDT Series RTU − Gas Heat
Voltage: 575V/3~/60Hz (J)
Supersedes:N/A Form No:
Input Heat Capacity 169k − 480k Btuh
Rev: 0
9
WHT
WHT
WHT
10
RED
RED
WB−016
SHT 1 − CC06
1 2
WB−016
SHT 1 − AA06
RED
1
2
BLK
RED
BLK
J28
P28
P433
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
J393
P393
FROM T3
TRANSFORMER
P406
J406
J408
P408
1
J408
P408
P229
P216
P228(1)
P434
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
P229
P228(2) P228(2)
P230
A
J15
P15
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
LOW TEMP VEST HTR
BURNER 2
P432
1
A3
1
DSI CTRL 1
1
DENOTES OPTIONAL COMPONENTS AND WIRING
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
538226−01
HEATI NG
SECTI ON
A
COOLI NG
SECTI ON
B
WI RI NG DI AGRAM FLOW
SECTI ON
B3
COOLI NG ACCS
SECTI ON
C
ACCS
SECTI ON
D
24VAC GND
P432
HEAT1 GND HEAT2 GND MGV GND
P433
P434

Lennox LDT Series Specifications

General

Brand	Lennox
Model	LDT Series
Category	Air Handlers
Language	English