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.

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.

1222-ld - Printed in Canada

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

Last Updated (Friday, 09 November 2012 16:18)

"Putting a Damper on Cold Air"

Colored Wiring Diagram #8A1