69-1088B
4
D896 AUTOMATIC VENT DAMPER
Fig. 5. Wiring diagram for D896 connection to L8148E1166 using wiring harness with two molex plugs.
Fig. 6. Wiring diagram for D896 connection to S8600/
S8610 using wiring harness with two molex plugs.
Fig. 7. Wiring diagram for D896 connection to
continuous pilot system using wiring harness
with one molex plug.
MV MV/PV PV
GND
(BURNER)
24V
GND
24V
SPARK
S8600F, H, M; S8610F,H
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
REMOVE PLUG ONLY IF USING VENT DAMPER. FUSE
BLOWS ON STARTUP WHEN PLUG IS REMOVED;
THEN MODULE OPERATES ONLY WHEN VENT
DAMPER IS CONNECTED.
1
1
M11375
SENSE
TH-W
VENT
DAMPER
PLUG
WIRING
HARNESS
D896
VENT
DAMPER
2
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
AFTER D896 VENT DAMPER IS PLUGGED TO L8148E1166, FUSE
BLOWS WHEN THERMOSTAT FIRST CLOSES. AFTER FUSE BLOWS,
L8148E1166 OPERATES ONLY WHEN VENT DAMPER IS CONNECTED.
LED 1 LIGHTS WHEN DAMPER IS OPEN.
LED 2 LIGHTS WITH CALL FOR HEAT.
SERVICE SWITCH. THE NORMAL SWITCH SETTING IS NORM. IF THE
SWITCH IS MOVED TO THE SERV POSITION, THE DAMPER REMAINS OPEN.
NO W,Z TERMINALS ON L7148.
M11382
D896
1
2
4
WIRING
HARNESS
24 Vac
THERMOSTAT
1K
L8148E1166/L7148
1K1
L1
(HOT)
L2
CIRCULATOR
3
4
1
3
2
6-PRONG FEMALE MOLEX
RECEPTACLE IN L8148E
AND 5-PRONG MALE
MOLEX PLUG ON CABLE
24V GND
24V
POLARIZED 4-PRONG MALE MOLEX PLUG AND
4-PRONG FEMALE MATING PLUG ON CABLE
FUSE
1
2
3
1
2
MOTOR
NORMAL
SERVICE
K1
R1, R2, R3
250 OHMS
N.C.
N.O.
N.C.
N.O.
C
C
S1
S2
K1
N.C.
N.O.
C
S3
SWITCHES AS SHOWN: S1,S2,S3
DAMPER OPEN
DAMPER CLOSED
T
W
TV
Z
C1
C2
L1
B2
B1
L2
5
4
5
6
6
5
3
4
S4
LED 2
LED 1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
CONNECT COLORS OF WIRING HARNESS AS SHOWN.
ALTERNATE LIMIT CONTROLLER HOOKUP.
2
3
M11372
WIRING
HARNESS
YELLOW
BLUE
BLACK
ORANGE
THERMOSTAT
LIMIT
CONTROLLER
L1
(HOT)
L2
LIMIT
CONTROLLER
1
D896
1
TH TH
2
DUAL AUTOMATIC
VALVE COMBINATION
GAS CONTROL
TRANSFORMER
2
1
3
1
2
3
4
