Air Furnace with a
supply duct controlled by a fresh air
Power Open Damper
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 directed into the return plenum which provides
fresh air for the living area in the home. Also included is a
separate fresh air duct
for a 120Vac
Fresh Air Damper with Relay and End Switch
2. 24Vac Relay Adaptor with a Duplex Receptacle and a Red Light (on/off) Switch
3. Replacement Air Control Damper
MAC Fresh Air Damper is
interlocked to open prior to the
Gas Dryer operation.
furnace circulation fan are
interconnected to operate simultaneously with the
MAC Fresh Air Damper during the dryer operation.
will also open by itself during the
heating cycle of the furnace.
Gas Dryer cord is plugged into the receptacle of the Adaptor
and the Adaptor cord is plugged into wall outlet previously occupied by the dryer.
5. Manually turning on the Red Light Switch opens the
MAC fresh air damper which in turn lights the switch. The
Dryer may now be programmed to run. When the Dryer has completed its cycle, the Adaptor Red Light Switch is to
off causing the MAC/HAC dampers to close and the furnace circulation fan to stop.
The HAC Damper may be continually left open by using
Optional on/off Switch.
Note: This installation does not interfere with the normal
operation of the heating cycle of the furnace or the cooling cycle of the air conditioner.
1222-ld - Printed in Canada
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