Honeywell AUTOMATIC VENT DAMPER D896 - Manual (Page 7)

D896 AUTOMATIC VENT DAMPER
68-0186 7
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
Fig. 7. Wiring diagram for D896 connection to S8600/S8610 using wiring harness with two Molex plugs.
1. When replacing a D80B or D892 with a D896, use the
included wire nuts to connect the D80B or D892 cable
to the D896 cable. See Fig. 9.
a. Remove the black wire from the D80B (or D892)
terminal 1.
b. Use a wire nut to connect the D80B (or D892)
black wire to the D896 blue wire.
c. Remove the orange wire from the D80B (or
D892) terminal 2.
d. Wire nut the D80B (or D892) orange wire to the
D896 yellow wire.
e. Remove the red wire from the D80B (or D892)
terminal 3 and the blue wire from the D80B (or
D892) terminal 5.
f. Wire nut the D80B (or D892) red and blue wires
to the D896 orange wire.
g. Remove the yellow wire from the D80B (or D892)
terminal 4.
h. Wire nut the D80B (or D892) yellow wire to the
D896 black wire.
2. Cycle the system through at least two appliance
operations.
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
M11383
YELLOW
BLACK
ORANGE
BLUE
RED
YELLOW
ORANGE
BLUE D80B
CONNECTOR
D80B
CABLE D892/D896
CABLE
BLACK
Fig. 8. Wiring diagram for D896 connection to continuous
pilot system using wiring harness with one Molex plug.
Fig. 9. Connecting D80B, D892 Cable to D896 Cable.
Snap-Tite™ Connector Release
To release the D896 cable from the knockout hole when
secured with a Snap-Tite™ Box Connector (Fig.10), slip a
screwdriver under the tab and twist.
SETTINGS
The service switch operates in both normal (NORM ) or
service (SERV) modes. See Fig. 5.
NORM—D896 opens on a call for heat and closes at the end
of the heating cycle.
SERV—D896 remains open at the end of a call for heat. The
switch must be in the SERVICE position before manually
opening the damper.
OPERATION AND CHECKOUT
Operation
On a call for heat, the CALL FOR HEAT LED on the actuator
lights and the damper begins to open. When the damper is
fully open, the IGNITION GAS PWR LED lights and the
furnace or boiler burner lights. When the heating cycle ends,
both LEDs turn off, the burner turns off and the damper
automatically closes. Heating system efficiency is increased
because the closed damper reduces the loss of residual
appliance heat and heated room air through the draft diverter.