Hoyme Colored Wiring Diagram #8B9


Forced Air Furnace having a Replacement Air Supply Duct controlled by a designated Ventilation Switch and/or Bathroom Timer and a Kitchen Exhaust Fan:

#8B9. Forced Air Furnace with Power Close Replacement Air Damper (HAC-0x10-OPC) and Two Exhaust/Ventilation Fans that use One Adaptor (ADP-1103-TW5) to Open Replacement Air Damper with Exhaust/Ventilation Fans and also 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.

Hoyme-colored-wiring-diagram-8b9-image

Diagram #8B9: Forced Air Furnace having a Replacement Air Supply Duct controlled by a designated Ventilation Switch and/or Bathroom Timer and a Kitchen Exhaust Fan.

  1. Use replacement Air Control Damper (Power Close) HAC-0x10-OPC
  2. Ventilation Switch and/or Bathroom Timer to supply Controlled 120Vac to Furnace area
  3. 24Vac dry contact switch points close when kitchen Exhaust Fan is operating
  4. Relay adaptor (ADP-1103-TW5) to function as a control center

OPERATION:

  1. Replacement Damper opens to provide fresh air during the heating cycles
  2. Ventilation Switch and/or Bathroom Timer turns on Ventilation Fan, opens Replacement Air Damper and turns on Furnace Fan simultaneously
  3. Kitchen Exhaust Fan closes 24Vac contact points, opens Replacement Air Damper and turns on Furnace Fan simultaneously
  4. Damper will remain closed during manual Furnace Fan operation
  5. 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

Note: This installation does not interfere with the normal operation of the heating cycle of the Furnace or the cooling cycle of the Air Conditioner.

Hoyme Colored Wiring Diagram #8B9 – Printer friendly