Home Support Colored Wiring Diagrams #4 - #4A3 #4A1

Colored Wiring Diagram #4A1

Replacement air damper (Power Open) opens during firing with optional manual switch

HMI Hoyme Manufacturing Inc. Special Note: Circuits are colored for clarification only and are not necessarily those found in actual installations.
Colored Wiring Diagram #4A1
Diagram #4A1: Forced Air Furnace having a replacement air supply duct.
1Power Open Replacement Air Control Damper (HAC-0x10- OPO). 
2. Toggle Switch (SPDT)
1. Replacement air damper is interconnected to the furnace so that the damper opens to provide fresh air during the heating cycle and closes to provide comfort and conserve energy when the fire stops. Adjustment of the Heat Anticipator is required on a regular type thermostat. 
2. The fresh air damper may be held open continuously by adding a Toggle Switch (SPDT) as shown. 
See Diagram #4A2 for a ready mounted toggle Switch using a Hoyme ADP-0240-3WS.

N.B. Replacement Air Damper is not affected by the ‘Manual’ setting of the furnace fan.

1222-ld - Printed in Canada

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Last Updated (Friday, 07 December 2012 11:06)