69-1088B
2
D896 AUTOMATIC VENT DAMPER
DAMPER
BLADE PLUG
DAMPER
BLADE
MOTOR
ACTUATOR
FOR DSI AND IP INSTALLATIONS ONLY – PLACE PLUG ON HOLE:
HOLD DAMPER BLADE AND PUSH DOWN ON PLUG.
M9675
Location
The D896 must be installed
after the furnace or boiler draft
hood. See Fig. 1. Make sure the D896 motor actuator is
readily visible and accessible. The damper must be
located where air can freely circulate around it.
Do
not install the D896:
—
where the stack temperature is higher than 575
°
F
(284
°
C).
—
where the ambient temperature is higher than 150
°
F
(66
°
C).
—
in small or enclosed spaces where the temperature
can exceed 150
°
F (66
°
C). See WARNING following.
—
on the vent pipe curve. See Fig. 1.
M11370
2
1
3
WARNING: DO NOT INSTALL THE
VENT DAMPER WITHIN 6 IN. (152 mm)
OF COMBUSTIBLE MATERIAL.
NO
CHIMNEY
WATER HEATER
FURNACE OR BOILER
INSTALL THE VENT DAMPER TO SERVICE ONLY THE SINGLE
APPLIANCE FOR WHICH IT IS INTENDED. IF IMPROPERLY
INSTALLED, A HAZARDOUS CONDITION, SUCH AS AN EXPLOSION
OR CARBON MONOXIDE POISONING, COULD RESULT.
DO NOT INSTALL THE VENT DAMPER ON VENT PIPE CURVE.
DO NOT RUN WIRES NEAR HIGH TEMPERATURE SURFACES.
USE STAND-OFF BRACKETS IF NECESSARY.
2
1
3
VENT PIPE
CURVE
DRAFT
HOOD
D896 MOTOR
ACTUATOR
Fig. 1. Location for D896.
WARNING
Severe illness or death possible. Prevent
explosion or carbon monoxide poisoning.
Overheating can cause premature device failure.
Be sure the D896 is used to control only one
appliance.
CAUTION
Do not force damper open.
Damage to device can result.
Manually open damper using a screwdriver. Place
screwdriver in slotted knob (see Fig. 4.) and rotate
counterclockwise until arrow is pointing in the
direction of the stack and both LEDs turn on.
Mounting
The damper must be mounted as close as possible to the
draft hood without modifying the draft hood. The D896 can
be mounted vertically or horizontally. When vertically
mounting the vent damper, the motor actuator can be in
any position. See Fig. 2.
Horizontal mounting requires the motor actuator to be
located within 45 degrees directly above, or directly below
the stack pipe. See Fig. 1 and 2.
IMPORTANT
Never mount the vent damper with the motor
actuator above or below the vent.
Do
not install the damper blade plug if the vent damper is
installed on a system with a continuous or standing pilot.
The hole provides the minimum vent area required by
code for safe operation.
Use the damper blade plug when the damper is installed
on a system with either an intermittent pilot or direct
ignition. The plug increases system efficiency. See Fig. 3.
Fig. 2. Installing D896 vent damper.
M11371
HORIZONTAL VENT INSTALLATION
FROM FURNACE
OR BOILER
FLOW
TO CHIMNEY
NO
NO
YES
YES
VERTICAL VENT INSTALLATION
TO
CHIMNEY
FLOW
FROM FURNACE
OR BOILER
INSTALL VENT
DAMPER WITH
ACTUATOR IN
ANY POSITION.
INSTALL VENT DAMPER
ONLY WITH ACTUATOR
TO SIDES OF VENT.
DO NOT MOUNT VENT
DAMPER WITH
ACTUATOR ABOVE
OR BELOW THE VENT.
D896
D896
Fig. 3. Installing damper blade plug.
