Is there a programmable thermostat that can be set to turn the fan on/off at set times?Our furnace fan only comes on during the cycle unless we switch on the fan manually. In the case of the latter, we get the high speed, which is okay, but sometimes we forget to turn it off for the day and this chews up lots of $$$ needlessly.In the morning, we use the manual fan to push more cold air upstairs as well as to generate some ambient noise so as to not wake the kids up. It would be great if we could just have it come on automatically at, say 5:30, and switch off at 7:30.

Honeywell Vision Pro(with "circ" option)

Thermostat wiring......It rocket science. Not everyone can do it.Bubba

Prog thermostat with auto fan control?

Jun 01, 2007 24 Replies

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Pat Coghlan 19 years ago

On the mounting bracket (see

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wires go from the R and C terminals over to a block. Not sure what the schematic is for that block, but I only connected the furnace R terminal to the corresponding R terminal on the bracket, and the display did not light up. It needs power (of course) so without a connection back to the common side of the transformer there's no continuity.

If they at least had a diagram showing a typical setup it would be clear(er), but currently it's a bit of a mystery.

-Pat

kjpro @ usenet.com wrote:

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Bubba 19 years ago

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Tony Hwang 19 years ago

Hi, Not at set time but Honeywell Vision Pro has an option to cycle the fan at certain interval.

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Tony Hwang 19 years ago

Hmmm, Major pain? I am almost 70 and that was the easiest to program. What could be easier?

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Tony Hwang 19 years ago

Hi, I think it was meant to say one wire from R and another from C. Original poster, please read the manual B4 anything. If it can handle multi-stage, sure it can handle single stage unit.

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