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-   -   Connecting booster fan to blower motor (http://www.houserepairtalk.com/f8/connecting-booster-fan-blower-motor-16679/)

python01 10-21-2013 10:55 AM

Connecting booster fan to blower motor
 
I would like to connect booster fan to the blower motor in my furnace. The blower motor has 5 wires going to it:
- Neutral
And 4 others:
- Cool-H
- Heat-H
- Park
- Park

The booster fan is 120VAC and I wonder which wires is it best to connect to?
They all get voltage when the the blower turns on.
Should I use relay or direct connection will be better?
The furnace is Trane XR90.

guyod 10-22-2013 04:43 PM

Hook it up to the relay controlling the blower


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