Home Support Colored Wiring Diagrams #8 - #8A9 #8A1

Colored Wiring Diagram #8A1

24Vac vent controlled by switch and replacement air damper Power Open

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

Color Wiring Diagram #8A1

Diagram #8A1: Forced Air Furnace having a replacement air supply duct together with an exhaust fan controlled by a 24Vac Switch.

1.
Replacement Air Control Damper, Power Open (HAC-0x10-OPO)  
2. 24Vac Switch.  
3. 24Vac Relay Adaptor (ADP-0241-10A) to function as a control centre with 120Vac power switching to the exhaust fan.

OPERATION: 
1. Furnace fires with thermostat signal.  
2. 24Vac contacts/switch simultaneously turns on Furnace Fan, opens Replacement Air Damper and directly switches 120Vac to the Ventilation Fan.
3. Optional Switch (i.e. toggle switch, 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

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Last Updated (Friday, 30 December 2016 10:56)