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Colored Wiring Diagram #9A3

Plug-in exhaust fan controlled by a designated ventilation switch and automatic interval timer
HMI Hoyme Manufacturing Inc. Special Note: Circuits are colored for clarification only and are not necessarily those found in actual installations.

  Color Wiring Diagram #9A3

Diagram #9A3: Forced Air Furnace having a replacement air supply duct together with a plug-in exhaust fan controlled by a designated ventilation switch and automatic interval timer for recycling the entire system.

1.
Replacement Air Damper, power open, (HAC-0x10-OPO) controls fresh air inlet.
2. 120Vac Ventilation Switch controls the Receptacle Timer Adaptor (TRADP-1102-TPX) placed in the furnace area.
3. Plug-in Exhaust Fan controlled by the Adaptor.
4. Relay Adaptor with Interval Timer functions as the automatic control centre.

OPERATION:
1. Furnace fires with thermostat signal. 
2. Ventilation Switch turns on Ventilation Fan, opens Replacement Air Damper and turns on Furnace Fan simultaneously. 
3. Interval Timer (Recycler) can be set for minimum or multiple consecutive settings of 15 minutes to simultaneously turn on Ventilation Fan open Replacement Air Damper and turn on the Furnace Fan
4. Optional switch (i.e. toggle switch, de-humidistat) connected between #1 and #2 of the Adaptor allows full control of the PO Replacement Air Damper to open as required.

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

1736-ld - Printed in Canada

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Last Updated (Tuesday, 05 September 2017 13:37)