Combustion air damper for two furnaces and replacement air damper
Hoyme Manufacturing Inc. Special Note: Circuits are colored for
and are not necessarily those found in actual installations. Combustion Air Damper Wires, however, are
colored as shown.
Forced Air Furnaces having a
common combustion air supply duct and a common replacement fresh air supply
1. Combustion Air Damper
appliances*(HOM-0x12-SF2)* but having only
combustion air supply duct. *(Damper has two separate operating
OPERATION: Combustion Air Damper is interlocked to both appliances so that the damper proves to be open
to supply fresh air for combustion when either one or the other or both furnaces are firing. Replacement Air Damper opens
simultaneously with the HOM damper or by an optional switch as shown.
1222-ld - Printed in