120Vac Vent Switches(2), Exhaust Fans(2),Forced Air Furnace, One Replacement Air Damper – (Power Close):
#5B3. Two 120vac Ventilation Fans, One Power Close Replacement Air Damper (-PC), One (ADP-1101-05A), One (ADP-1101-10AS).
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 #5B3: Forced Air Furnace having one Replacement Air Supply Duct together with Two Exhaust Fans, one Primary that overrides the secondary, both controlled by two interlocking Relay Adaptors, one being ADP-1101-10AS and the other ADP-1101-05A.
- A Replacement Air Damper, Power Close (HAC-0x10-OPC)Two Ventilation Switches that supply both live and controlled 120Vac to the Furnace area;
- Two Relay Adaptors interlocked, one being (ADP-1101-10AS) and the other (ADP-1101-05A). Both function as control centers to actuate the Replacement Air Damper by either the primary or secondary Ventilation Fan Switch
OPERATION:
- Either Ventilation Switch simultaneously turns on its own Exhaust Fan, opens the Replacement Air Damper and turns on the Furnace Fan
- The Secondary Fan cannot operate while the Primary Fan is on
- Optional Switch (i.e. toggle switch) allows full control of the Replacement Air Damper to open separately provided it is a Power Close type Damper
(For Power Open Damper, see Diagram #5B2)
N.B. Replacement Air Damper is not affected by the ‘Manual’ setting of the Furnace Fan nor is the Air Conditioner affected in any way.