Vent switch, combustion air, and interlocking replacement
Hoyme Manufacturing Inc. Special Note: Circuits are colored for
and are not necessarily those found in actual installations.
Wires of the
Combustion Air Damper, however, are
colored as shown
Forced Air Furnace having a
supply duct and a
supply duct together with a designated
to turn on an
exhaust fan INTERLOCKED
to a replacement
air control damper to prove to be open before exhaust fan runs.
and an End Switch (HAC-0x11-SPC)
3. Ventilation Switch and/or bathroom timer with
controlled and regular 120Vac
supply to furnace area.
Relay Adaptor (ADP-1102-TPX)
functions as a control centre.
1. Combustion Air and Replacement air damper open during furnace firing.
2. Ventilation Switch
opens the Replacement Air Damper.
After Damper proves to be opened (INTERLOCKED),
the Ventilation Fan and Furnace Fan will turn on.
(i.e. toggle switch, timer, de-humidistat) allows full control of Replacement
Air Damper to open at any time provided it is the
N.B. Replacement Air Damper is not affected by the ‘Manual’ setting of the
1222-ld - Printed in Canada
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