Home Support Colored Wiring Diagrams #5 - #6B2 #5B

Colored Wiring Diagram #5B

120Vac vent switch, combustion air(2 furnaces), 2 replacement air dampers (Power Close)

HMI Hoyme Manufacturing Inc. Special Note: Circuits are colored for clarification only and are not necessarily those found in actual installations. Wires of the Combustion Air Damper, however, are colored as shown .

Color Wiring Diagram #5B  

Diagram #5B: Two Furnaces having a common combustion air and two replacement air supply ducts together with an exhaust fan controlled by a designated ventilation switch or timer.
Combustion Air Damper (HOM-0x12-SF2)  
2. HAC-0x10-OPC connected to the primary furnace. 
3. ADP-1101-05A connected to the primary furnace only. 
4. HAC-0x11-OPC damper with relay is connected to the secondary furnace.
1. Replacement Air Damper HAC-0x10-OPC is inter-connected to the Combustion Air Damper so that this damper opens during firing of either or both furnaces and closes when firing stops. 
2. Ventilation Switch and/or timer turns on the exhaust fan, the furnace fan and opens the primary HAC damper simultaneously. 
3. The secondary damper HAC-0x11-OPC opens only when the secondary furnace fires. 
4. Optional switch (i.e. toggle switch, timer, de-humidistat) on each HAC damper allows independent control of each damper.

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

1716-ld - Printed in Canada

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Last Updated (Friday, 19 May 2017 15:08)