Home Support Colored Wiring Diagrams #10 - #12D1 #12D

Colored Wiring Diagram #12D

  120 Vac vent switch, Adaptor 1101-05A and replacement air damper, Power Open with  High volume Kitchen Exhaust fan interconnected to a Forced Air Heating System, replacement air with inlet fan interlocked with a separate Power Open Damper

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

Diagram #12D: Forced Air Furnace having a regular  replacement air supply duct  with an inlet damper and an exhaust fan controlled by a designated ventilation switch. In addition, a special Replacement Air supply duct equipped with a Power Open Damper with End Switch, a Booster  Inlet Fan and  High Volume  Exhaust Fan.  

1. Replacement Power Open Damper (HAC-0x10-OPO) where “x”= diameter.  
2. Ventilation Switch to supply Controlled 120Vac to furnace area. 
3. Relay Adaptor (ADP-1101-05A) to function as a control centre for regular ventilation.  
4. Power Open Damper with an End Switch (HAC-0x10-SPO)  INTERLOCKED to an Inlet Fan to supply extra replacement air for a high volume Exhaust Fan.  
5. Interface Relay Adaptor (ADP-1102-TPX) acts as a control centre for the extra replacement air .

1. Thermostat does not control the dampers. (If required, go to Diagram #12D1). 
2. The designated  Ventilation Switch simultaneously turns on the Exhaust Fan, the Furnace Fan and opens the Replacement Air Damper. 
3. Optional on/off Switch connected between #1 and #2 of the (ADP-1101-05A) or (ADP-1102-TPXallows full control of the Replacement Air Dampers to open as required. 
4. In addition, the high volume exhaust fan switch signals the adaptor (ADP-1102-TPX) to start the furnace circulation fan and open the extra replacement air damper.
5. After the extra Damper with End Switch proves to be open, both the Inlet Booster Fan and the high volume Exhaust Fan turn on. The Fans are, therefore, Interlocked to run only after the inlet damper is open for replacement air.

Option: Consider an Inline electric heater with an airflow switch to temper incoming cold air.    

1223-ld  Printed in Canada

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Last Updated (Monday, 02 November 2015 12:59)