HVAC guys, wall mounted thermostat

[Sac Arrow]

Here's the situation. Industrial fan is operating off a wall switch. It needs to operate off a thermostat. Assuming the wall switch is located in an appropriate location to place a thermostat, is there a cheap off the shelf solution that will mount in the switch box that will achieve that end? Greenheck probably has something but probably anything that can plug in and is adjustable, preferably with an integral on/off will work. Ideas?

 

[vkhosid]

A simple non-setback thermostat should do the trick. It will probably be bigger than the switch box anyway, so it will cover the hole in the wall completely.

 

[FORANE]

This?
http://www.amazon.com/Ventamatic-XX...rue&ref_=ox_sc_sfl_title_7&smid=ATVPDKIKX0DER

 

[Sac Arrow]

This?
http://www.amazon.com/Ventamatic-XX...rue&ref_=ox_sc_sfl_title_7&smid=ATVPDKIKX0DER

That is a possibility although the form factor isn't exactly what I'm looking for.

 

[timwinters]

Sac, if the fan is 120v then the controller that Forane gave a link to is likely what you need. I don't see an amperage rating anywhere though...hopefully it's heavy enough for your fan.

You CANNOT use a regular HVAC t-stat without relays/contactors since they are low voltage. It's doable, but a more convoluted control system than something that's line voltage like Forane's link.

 

[vkhosid]

Sac, if the fan is 120v then the controller that Forane gave a link to is likely what you need. I don't see an amperage rating anywhere though...hopefully it's heavy enough for your fan.

You CANNOT use a regular HVAC t-stat without relays/contactors since they are low voltage. It's doable, but a more convoluted control system than something that's line voltage like Forane's link.

Absolutely spaced on the voltage differences....though I don't think he needs a humidi-stat.

 

[Sac Arrow]

Sac, if the fan is 120v then the controller that Forane gave a link to is likely what you need. I don't see an amperage rating anywhere though...hopefully it's heavy enough for your fan.

You CANNOT use a regular HVAC t-stat without relays/contactors since they are low voltage. It's doable, but a more convoluted control system than something that's line voltage like Forane's link.

Good point. I think the control is operating off line voltage but I don't know that.

 

[timwinters]

Absolutely spaced on the voltage differences....though I don't think he needs a humidi-stat.

True, but the humidistat side has an off setting.

 

[GlennAB1]

My attic fan, at my old house, was thermostatically controlled. Maybe look into that setup and just leave the switch on all the time or remove the switch and cover the box. Maybe something here will work: https://www.grainger.com/category/l...&searchBar=true&searchRedirect=fan+thermostat

 

[3393RP]

What you need is known as a line voltage thermostat. Obviously, right? Anyway that phrase will help you search on Amazon or Granger or wherever.

You'll have to determine the voltage and ampacity of the circuit so the stat is properly rated for the application.

http://www.amazon.com/s/ref=nb_sb_s...age+thermostat&sprefix=line+voltage,tools,218

 

[timwinters]

What you need is known as a line voltage thermostat. Obviously, right? Anyway that phrase will help you search on Amazon or Granger or wherever.

You'll have to determine the voltage and ampacity of the circuit so the stat is properly rated for the application.

http://www.amazon.com/s/ref=nb_sb_ss_i_1_12?url=search-alias=tools&field-keywords=line+voltage+thermostat&sprefix=line+voltage,tools,218

Yeah, and additionally, he wants a line voltage cooling thermostat...not heating. At least if I understand correctly what he's trying to accomplish, which is: Area gets hot, fan comes on. Area cools down, fan goes off.

 

[PaulS]

This should work, although I tried to download a manual and it aggravated me. I assume this will mount in your switch box as it is 120V, but check it out before you buy.

http://www.globalindustrial.com/p/h...INg9Ehaxtygh5SeQaNQMpC4Pn18PUs8Ui2RoCodLw_wcB

 

[Sac Arrow]

This should work, although I tried to download a manual and it aggravated me. I assume this will mount in your switch box as it is 120V, but check it out before you buy.

http://www.globalindustrial.com/p/h...INg9Ehaxtygh5SeQaNQMpC4Pn18PUs8Ui2RoCodLw_wcB

Yes, bingo. I believe that will work perfectly.

 

[SoonerAviator]

I guess my question is, will the thermostat kicking on the fan actually shut off at any point? Fans don't typically "cool" the air much, so would the thermostat kick on and then just stay on until such time as the ambient temps came down?

 

[Sac Arrow]

I guess my question is, will the thermostat kicking on the fan actually shut off at any point? Fans don't typically "cool" the air much, so would the thermostat kick on and then just stay on until such time as the ambient temps came down?

The answer is a fractional horsepower fan cooling a room full of electrical switchgear probably will never shut off. The reason for putting a thermostat in is an agonizing story and I don't want to get in to it. It will probably be functional in the winter, not so much in the summer.

 

[SoonerAviator]

Makes perfect sense in that application where you are drawing air across electronics/heat sinks. I was making sure this wasn't for a garage/shop in an effort to drastically reduce air temps.

 

[cessna182b]

I guess my question is, will the thermostat kicking on the fan actually shut off at any point? Fans don't typically "cool" the air much, so would the thermostat kick on and then just stay on until such time as the ambient temps came down?

I arrived at a similar solution for an attic fan. What I did differently was to put the thermostat in the attic (where the fan action made the most difference). I still had a wall switch in the house to enable or disable
the fan at will. When enabled the fan would come on in mid-morning and shut down in the evening (assuming warm weather & sun shining). I shut it off for the winter (and when leaving the house empty).

Dave