Home Support Colored Wiring Diagrams #10 - #12D1 #12C

Colored Wiring Diagram #12C

High volume Kitchen Exhaust fan interconnected to a Forced Air Heating System, replacement air with inlet fan interlocked with a Power Open Damper

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

Diagram #12C: A High Volume Kitchen Exhaust Fan Interlocked to both a Power Open Damper and an Inlet  Booster Fan to form part of a forced air heating system.

NOTE: If combining this High Volume Exhaust system with an existing designated ventilation system, go to Color Diagram (#12D) or (#12D1) for instructions.

1. Power Open Damper with an End Switch (HAC-0x10-SPO) where “x”= diameter.

2. Ventilation Switch and or bathroom timer with 3C-Wire 120Vac supply to furnace area.

3. Relay Adaptor (ADP-1102-TPX) to function as a control centre. 


1. Thermostat does not control the damper. (If required go to Diagram #12D1

2. The Kitchen Ventilation Switch signals the adaptor to start the furnace circulation fan and to open the replacement air damper.

3. Optional on/off Switch connected between #1 and #2 of the (ADP-1102-TPXallows full control of the Replacement Air Damper to open as required. 
4. After the Inlet Damper proves to be open, the Damper End Switch turns on both the Inlet Booster Fan and the high volume Exhaust Fan. The Fans are, therefore, Inter-locked to run only after the damper proves to be open to supply the replacement air.

Option: Consider an Inline electric heater with an airflow switch to temper cold incoming air.

1736-ld - Printed in Canada

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Last Updated (Friday, 08 September 2017 13:39)