Colored Wiring Diagram #12B4
Two Vent switches and interlocking replacement air damper -
Power Open - also opens on call for heat
Diagram #12B4: Forced Air Furnace having a replacement air supply duct together with a designated ventilation switch and/or bathroom timer to turn on an exhaust fan INTERLOCKED to a replacement Power Open air control damper.
1. Replacement Power Open Air Damper and End Switch (HAC-0x10-SPO).
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Last Updated (Monday, 02 November 2015 12:50)