A.O. Smith BTH-120 - BTH 120 & 150 Wiring Diagram

68
BTH 120 & 150 WIRING DIAGRAM
2
GREEN
WHITE
RED
BLACK
1
1
2
BLACK
3
WHITE
COMBUSTION
BLOWER
UPPER TEMPERATURE PROBE
1 RED (ECO)
4 RED (ECO)
2 BLACK
3 BLACK
1 BLACK120 VAC HOT
3 WHITE 120 VAC NEUTRAL
4 YEL 24 VAC
4 YEL 24 VAC
LOWER TEMPERATURE PROBE
HOT SURFACE IGNITER
FLAME SENSOR
BLOCKED
AIR INTAKE
BLOCKED
EXHAUST
BLOWER
PROVER
24 VAC
GAS VALVE
B (CENTRAL CONTROL BOARD)CC
6J5J4J7J51J
61J
01J31J2J3J1J
TRANSFORMER
INSIDE CCB
ENCLOSURE
50VA
GROUND STRIP
BURNER GROUND
(BURNER BOLT)
ON/OFF
SWITCH
GROUND
120 VAC NEUTRAL
120 VAC HOT
LOW GAS
PRESSURE SWITCH
1 BLACK
2 WHITE
RED
1 BLACK
2 BLACK
1 BLACK
2 WHITE
M
USER INTERFACE MODULE
IU
1
2
15
4
14
5
10
6
7
8
13
11
L
N
ANODE 1
ANODE 2
1 GREEN
2 BLUE
2 RED
GREEN
WHITE
NOITCNUJ
XOB
GREEN
NEERG
NEERG
ENABLE/DISABLE CIRCUIT
JUMPER WIRE BETWEEN PINS
8 AND 11 ON J6 PLUG
120 VAC 1 Ø POWER
Figure 66