120Vac vent switch, Adaptor 1101 and replacement air
damper, Power Close, opens during firing.
Hoyme Manufacturing Inc. Special Note: Circuits are colored for
and are not necessarily those found in actual installations.
Forced Air Furnace having a
supply duct together with and
controlled by a designated
ventilation switch and/or bathroom timer
1. Replacement Air Control Damper
Ventilation Switch and/or bathroom timer to supply
to furnace area.
to function as a control centre.
Replacement Damper opens to provide fresh air during the
ventilation and heating cycle.
Ventilation Switch and/or bathroom timer
turns on Ventilation Fan, opens Replacement Air Damper and turns on Furnace
3. Optional Switch
(i.e. toggle switch, timer, de-humidistat) allows full control of the
Replacement Air Damper to open as required provided it is
N.B. Replacement Air Damper is not affected by the ‘Manual’
setting of the furnace fan.
1222-ld - Printed in
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