Enervex Part# 202.0000.0628
The 28" ID ADF Automatic Damper is a single blade, two position damper powered by an actuator. It is used to balance draft in a boiler connector and to reduce boiler stand-by losses. It is for installation with gas-fired or oil-fired equipment only.
Description
The ADF Automatic Damper is powered by a 120VAC or 24VAC/VDC actuator. The actuator is equipped with a fail safe system to open the damper in the event of an electrical or mechanical failure. It has an adjustable NO/NC endswitch to provide damper position open/ closed.
The ADF is available in standard stack diameters ranging from 4" to 36". The actuator interlocks with a gas or oil fired heating appliance to open the damper when the appliance is in use, and closes it when the appliance is not in use.
The ADF damper is manufactured to connect to chimneys with a standard 1/2" flanged connection. The ADF is rated for temperatures up to 1400ᵒF (760ᵒC).
The ADF should be installed with sufficient clearance above the boiler outlet to allow for damper protrusion into the stack when fully open.
Material
The frame is made of 20 GA 316L stainless steel. The blade is made of 18 GA 316L stainless steel.
Standard Equipment
• V-bands
Optional Equipment
• Weather proof enclosure for actuator
• Positive Seal Gasket
Listings
The ADF Automatic Damper assembly (damper with actuator) is UL listed in the US and certified for Canada under Underwriters Laboratories Inc. file no. E467733:
• UL 378 Standard for Draft Equipment
• UL 17 Standard for Vent or Chimney Connector Dampers for Oil-Fired Appliances
• ULC/ORD-C378 (1975) Draft Equipment
• ANSI Z21.66-1996 Automatic Vent Damper Devices For Use With Gas-fired Appliances
UL File E467733
With Gas-fired Appliances
Warranty
2-Year Factory Warranty. Complete warranty conditions are available from ENERVEX Inc.
Enervex ADF / ADM Submittal Data