Home Support Colored Wiring Diagrams #8B - #8D2 #8B

Colored Wiring Diagram #8B

24Vac vent switch with relay, replacement air damper Power Close
HMI  Hoyme Manufacturing Inc. Special Note: Circuits are colored for clarification only and are not necessarily those found in actual installations.  
Diagram #8B: Forced Air Furnace having a replacement air supply duct together with an exhaust fan controlled by a designated ventilation switch and/or bathroom timer together with a 120Vac relay that sends a 24Vac signal to the furnace area.

Replacement Air Control Damper, Power Close (HAC-0x11-OPC)
2. Ventilation Switch and/or bathroom timer. 
3. 24Vac Relay Adaptor (ADP-0241-05A) to function as a control centre.
1. Furnace fires with thermostat signal.  
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 as required.

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

1652-ld - Printed in Canada

Printer friendly (pdf)   - (Opens in a new window)

Last Updated (Friday, 30 December 2016 12:46)