Home Support Colored Wiring Diagrams #8 - #8A9 #8

Colored Wiring Diagram #8

24Vac vent switch and replacement air opens during firing

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

Color Wiring Diagram #8

Diagram #8: Forced Air Furnace having a replacement air supply duct together with an exhaust fan controlled by a designated ventilation switch and/or bathroom timer that sends a 24Vac signal to the furnace area.

1. Replacement Air Control Damper with Relay (HAC-0x11-OPC)
2. Ventilation Switch and/or bathroom timer that sends Controlled 24Vac to furnace area. 
3. 24Vac Relay Adaptor (ADP-0241-05A) to function as a control centre.
1. Replacement air damper opens to provide fresh air during furnace firing.  
2. Ventilation Switch and/or bathroom timer turns on Ventilation Fan, opens Replacement Air Damper and turns on Furnace Fan simultaneously. 
3. Optional Switch (i.e. toggle switch, timer, de-humidistat) allows full control of Replacement Air damper to open provided it is a PC type with a relay.

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

1721-ld - Printed in Canada

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Last Updated (Tuesday, 23 May 2017 15:41)