how to  hvac


Question by  AnnArk (141)

How do you connect a fan to a thermostat?

I need to connect a fan to a thermostat.


Answer by  malpoa (363)

Power supply wire should be connected to thermostat first and then to the fan. This lets the thermostat to control the fan. The number of connectors on the thermostat is also to be taken into account while making a connection.


Answer by  BillyBingham (65)

There is one piece of advice that I give to anyone who doesn't know for sure how to work on something: It is always best to seek professional advice by contacting the dealer of the unit. It is not a safe practice to work on anything you are not 100% sure of.


Answer by  les59 (852)

Yes you do have to connect a fan to a thermostat-IF-it is programmed to cut on to cool something down. An example of this would be a radiator fan in an engine or a computer fan on a laptop or desktop.


Answer by  kipcat (1964)

Unless you have a 110volt thermostat, you will need a 'fan center' 24volt transformer/relay for the fan. The fan is connected to the relay and the thermostat is hooked up to the transformer per terminal R to R, W to W etc. The fan will work off the AC control.

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