Figure 7: Plug-in Damper Installation
WARNING
Failure to properly install and use this Blocked Vent Switch may result in property damage, personal injury or loss of life.
12. TO MEET FEDERALLY MANDATED EFFICIENCIES, THIS BOILER MUST BE EQUIPPED WITH A VENT DAMPER.
OPEN the VENT DAMPER CARTON and remove the Installation Instructions. READ THE INSTALLA- TION INSTRUCTIONS THOROUGHLY before proceeding.
The automatic gas control valve supplied on each Series 2™ boiler provides the redundancy referenced in the vent damper Installation Instructions.
CAUTION
Do not use one vent damper to control two heating appliances.
A.The vent damper should be the same size as the outlet of the Draft Hood. (See Figure 1) Unpack the damper carefully - DO NOT FORCE IT CLOSED! Forcing the damper may damage the gear train and void the warranty. The damper assembly includes a prewired connection harness for use on all 24V Standing Pilot or electronic ignition control systems.
B.Mount the vent damper assembly after the draft hood, as close to the draft hood as practicable without modification to the draft hood or vent damper. (Refer to Figure 7 and to instructions packed with the vent damper for specific instructions). This is a must for the wiring harness to fit and the damper position indicator to be visible to the users.
NOTICE
Provide adequate clearance for servicing.
WARNING
Provide 6" (15.2cm) minimum clearance between damper and combustible construction.
C.Install the 90° BX connector attached to the flexible conduit in the 7/8" knockout on the left side of the jacket. Plug the factory wired Vent Damper Harness into the polarized receptacle. Install a cable clamp around the flexible conduit and attach to the Jacket top panel. (See Figure 7).
NOTICE
Please refer to the specifications, installation instructions and troubleshooting guide packed in the vent damper carton for complete detailed installation instructions. Also refer to Figure 7 in this manual.
DContinuous Ignition (Standing Pilot) Only. Remove knockout from vent damper blade.
E.Size 202 Only. Install 4" x 3" reducing fitting on vent damper outlet.
13.Install vent connector from reducing fitting (202 Only), draft hood or damper to chimney, see
Figure 8.