Brochure
Page 6
INSTALLATION OF THE UNIT 
WARNING: Install the automatic vent damper to service only the single appliance for which it is intended. See 
Figure 4. If improperly installed a hazardous condition such as an explosion or carbon monoxide poisoning could 
result. 
WARNING: To be used only with an appliance bearing a marking showing the make and model of the device. 
Required for installations in Canada. 
CAUTION:  Horizontal and Vertical Applications: 
VERTICAL
The vent damper is not position sensitive. You may mount the vent 
damper in any position. A minimum of 6 inches between the device and 
combustible construction shall be maintained. 
HORIZONTAL
To avoid premature failure of the vent damper refer to Figure 3. Avoid 
mounting the damper directly above or below the vent pipe. We suggest 
1:00 to 5:00 or 7:00 to 11:00 ‘o clock positions. A minimum of 6 inches 
between the device and combustible construction shall be maintained. 
1.  Install the vent damper device after the appliance draft hood, as close to the draft 
hood as practical, and without modification of either the draft hood or the vent 
damper device. 
2.  Locate a position in the vent pipe connector between the draft hood and chimney 
for the damper device. (See Figure 4) 
3.  A minimum clearance of 6 inches between the device and combustible construction 
must be maintained and there must be provisions for access and service of the 
damper device. 
4.  The vent damper device shall be connected to a chimney or vent complying with a 
recognized standard, or a masonry or concrete chimney lined with a lining material 
acceptable to the enforcing authority. 
5.  Remove the appropriate section of vent pipe connector and reinstall the shorter 
vent pipe connector and vent damper. 
6.  The directional arrow and crimped end of the vent damper must point toward the 
chimney. The motor assembly must be assessable for wiring and the damper 
position indicator visible. 
7.  Secure the vent damper to the vent pipe. Use 1/2 inch sheet metal screws or pop 
rivets. The spacing should be equally distributed 120° apart around the 
circumference. Three fasters shall be used at the inlet and outlet of the pipe 
assembly. 
8.  Be careful not to allow the fasteners to obstruct the damper gate. 
9.  It may be necessary to provide a suitable hanger to support the vent damper independent of the venting system. 
10.  Check to see the vent damper service switch is in the automatic position. 
11.  Check to see the flat shaft is fitted into the motorized assembly. 
Figure 4
Figure 3










