Two 120Vac Vent Switches, Two Adaptors an 1101-05A and an 1102-TWP, a Replacement Air Damper, Power Open, opens during firing:
#6A5. Two 120vac Ventilation Fans, Two Adaptors (ADP-1101-05A) and (ADP-1102-TWP), One Power Open Replacement Air Damper (-PO) Opens during Furnace firing.
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 #6A5: Forced Air Furnace having one Replacement Air Supply Duct together with two Exhaust Fans controlled by two Relay Adaptors one being (ADP-1101-05A) and the other (ADP-1102-TWP).
- A Replacement Air Control Damper, Power Open (HAC-0x10-OPO)
- Two Ventilation Switches to supply Controlled 120Vac to Furnace area
- Two Relay Adaptors (ADP-1101-05A) and the other the (ADP-1102-TWP) both function as control centers to actuate the Replacement Air Damper from the Thermostat or by either Ventilation Switch
OPERATION:
- Replacement Damper opens during Furnace firing
- Either Ventilation Switch simultaneously turns on the Exhaust Fan, opens the Replacement Air Damper and turn on the Furnace Fan
- Optional Switch (i.e. Toggle Switch) allows full control of the Replacement Air Damper to open separately provided it is a Power Open (PO) type Damper
(For Power Close Damper see Diagram #6A4)
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.