Combustion air damper
HMI Hoyme Manufacturing Inc. Special Note: Circuits are colored for clarification only and are not necessarily those found in actual installations. Combustion Air Damper Wires, however, are colored as shown.
Diagram #1: A Forced Air Furnace or Boiler having a combustion air supply duct.
ADDED: Combustion Air Damper for one furnace or boiler (HOM-0x11-SF1)
OPERATION: Combustion Air Damper is interlocked to the Thermostat/Aqua-stat and the gas valve so that the damper proves to be open to supply fresh air before the furnace/boiler fires. The damper closes to conserve energy when the fire stops.
0835 Printed in Canada
Printer friendly (pdf) - (will open in new window)