Thermostat for fan "on" speed


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Old 05-13-17, 09:01 PM
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Thermostat for fan "on" speed

Hello,

Does anyone know of a thermostat that allows you to change the speed of the fan when it is in the "ON" or "CIRC" setting? I don't want to change the fan speed during heating or cooling just when using the fan in on or circ? Currently it is set to low, but would like the option of kicking it up to high as the months warm up before AC season.

Lennox G51-MP unit

Thanks
 
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Old 05-14-17, 07:24 AM
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I recommend swapping the wires on the "Fan" and the "Park" terminals at the furnace. It looks like red is low speed and it is connected to the Fan terminal from the factory.

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Old 05-14-17, 07:38 AM
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Thanks for the reply.

I have previously done this but was looking for something that allowed me all the speeds at the thermostat without swapping terminals.
 
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Old 05-14-17, 11:28 AM
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Without using an item like a variable frequency drive with several relays..... there isn't a way of doing what you want.
 
 

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