Home Support Colored Wiring Diagrams #5 - #6B1 #6A8

Colored Wiring Diagram #6A8

Two 120Vac vent switches, One Primary & One Secondary Vent Fan, Replacement air damper, Power Close with ADP-1101-10AS & ADP-1102-TWP

HMI Hoyme Manufacturing Inc. Special Note: Circuits are colored for clarification only and are not necessarily those found in actual installations.

Color Wiring Diagram #6A8

Diagram #6A8: 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-1102-TWP). 

1. A Replacement Air Damper, Power Close (HAC-0x10-OPC);
2. Two Ventilation Switches that supply both live and controlled 120Vac to the furnace area; 
3. Two Relay Adaptors interlocked, one being (ADP-1101-10AS) and the other (ADP-1102-TWP). Both function as control centers to open the replacement air damper by either the primary or secondary ventilation fan switch and/ or by the thermostat setting. 

OPERATION: 
1. Replacement Damper opens during furnace firing. 
2. Either Ventilation Switch simultaneously turns on its own Exhaust Fan, opens the Replacement Air Damper and turns on the Furnace Fan. 
3. The Secondary Fan cannot operate while the Primary Fan is on.
4. 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 #6A7)  
 
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.

1717-ld - Printed in Canada

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Last Updated (Friday, 19 May 2017 15:37)