Hoyme Colored Wiring Diagram #12B

Vent switch and interlocking replacement air – Power Open:

#12B. Same as #12 But Uses a Power Open Replacement Air Damper (HAC-0x10-SPO) c/w End Switch; but Damper Does Not Open During Furnace Firing. (See #12B1).

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.

Hoyme-colored-wiring-diagram-12b-image

Diagram #12B: 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)
  2. Ventilation Switch and/or Bathroom Timer with 3-Wire 120Vac supply to Furnace area
  3. Relay Adaptor (ADP-1102-TPX) functions as a control center

OPERATION:

  1. Furnace fires with Thermostat signal
  2. Ventilation Switch and/or bathroom timer opens the Replacement Air Damper. After Damper proves to be open (INTERLOCKED), the Exhaust Fan and Furnace Fan will turn on

N.B. Replacement Air Damper is not affected by the ‘Manual’ setting of the Furnace Fan.
Also does not interfere with the Air Conditioner.

Hoyme Colored Wiring Diagram #12B – Printer friendly