3-46
8050526D
OIL
RETURN
HEATER FRONT
WHITE
GREEN
WHITE
ORANGE
BLA
C
K
ALARM
VALVE
VALVE
GROUND
(BURNER)
GROUND
25V
25V
TO
J1
P
IN
9
TO
J1
P
IN
6
TO
J
1
PI
N
2
DUAL VAT ONLY
TEMP PROBE
RE
D
WH
IT
E
HI-LIMIT
BL
A
C
K
COM
N
C
N
O
SAFETY DRAIN SWITCH
BLACK
GAS VALVE
14
C
BL
AC
K
13C
18C
FOR UNITS WITH NO
SAFETY DRAIN SWITCH
ADD IN-LINE SPLICE
BLACK
BLACK
BLACK
BLACK
ADD IN-LINE SPLICE
SAFETY DRAIN SWITCH
FOR UNITS WITH NO
11C
12C
BL
AC
K
14C
GAS VALVE
BLACK
SAFETY DRAIN SWITCH
N
O
N
C
COM
BL
A
C
K
TO
J
3
PI
N
9
HI-LIMIT
TO
J3
P
IN
2
TO
J
3
PI
N
6
WH
IT
E
RE
D
TEMP PROBE
A
RELAY
LEFT
DUAL
DUAL
OR
FULL
RIGHT
RELAY
J2
GND
V1S
ALARM
POWER
V1D
GND
BLUE
GREEN
25V
25V
GROUND
ORANGE
(BURNER)
GROUND
VALVE
VALVE
ALARM
SOUND DEVICE
TO J2
COMPUTER OR CONTROLLER
J3 OPPOSITE
SIDE
J1 OPPOSITE
SIDE
DETAI
L
A
COMPUTER GND (81C)
BLACK
WHITE
GREEN
BLUE
GND
GND
GND
GND
V2D
PWR
A D
V2S
A S
TO J3
PIN12
DETAIL A-A
LI
N
E
VO
LTA
G
E
LI
N
E
VO
LTA
G
E
TO
C
2
P
IN1
TO
C2 PI
N
3
T
O
C2
PI
N1
2
1 2
C5
BLOWER
WH
IT
E
GREEN
WHITE
T
1
T
2
T
1
T
2
(L1)
(C
OM
)
BIH52/MH52 Main Wiring Diagram (CE)
R e f e r t o " P R I N C I P A L W I R I N G
CONNECTIONS" on Page 3-42 for
detail of conncection points J1, J2,
J3, C2, C3, and C5.
Old Single-Spark Ignition Module