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#70994 - 10/18/06 05:52 PM Line voltage thermostat  
frankft  Offline
Member
Joined: Oct 2004
Posts: 39
Maine
Does anybody make a line voltage thermostat where the contacts open on temp fall. What a customer is looking for is this; they have a fan that blows heat from a wood stove around, but they would like the fan to shut off when the fire goes out. I know this could be done with relays, but I thought some kind of thermostat might be on the market.
Thanks


Thats how we do it up in the woods!

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#70995 - 10/18/06 06:30 PM Re: Line voltage thermostat  
SteveFehr  Offline
Member
Joined: Mar 2005
Posts: 1,213
Chesapeake, VA
Any air conditioning thermostat should do that.


#70996 - 10/18/06 06:33 PM Re: Line voltage thermostat  
hbiss  Offline
Member
Joined: Dec 2003
Posts: 886
Hawthorne, NY USA
There are many types of line voltage thermostats that have SPDT contacts on them that you could use for this. You need to look in HVAC catalogs or supply houses. Grainger comes to mind as one distributor. They have some but by no means everything that is out there.

-Hal


#70997 - 10/18/06 06:53 PM Re: Line voltage thermostat  
Celtic  Offline
Member
Joined: Feb 2005
Posts: 361
NJ
Grainger will have something....I recall a job I did long ago at a carwash, we wanted to shut down (and purge the lines) when the temp approached freezing.
Can't recall the exact style, type, etc...but they do make 'em.


~~ CELTIC ~~
...-= NJ =-...

#70998 - 10/18/06 07:01 PM Re: Line voltage thermostat  
Dnkldorf  Offline
Member
Joined: Dec 2004
Posts: 1,064
nowhere usa
Is this fan built into the wood stove, or is this an aux fan?

If this is an aux fan, wood burning dealers have this neat fan that just sits on top of the stove, and turns on and moves the air, with no electric hook-up. I don't know how they work, but they are pretty neat.

I have no idea who makes them, but all they dealers around me carry them.


#70999 - 10/18/06 07:03 PM Re: Line voltage thermostat  
Dnkldorf  Offline
Member
Joined: Dec 2004
Posts: 1,064
nowhere usa
If it is built into the stove, same advise.

Get one from the wood burning dealers, and engineer it into a cover or someplace on the stove.


#71000 - 10/18/06 07:39 PM Re: Line voltage thermostat  
bigrockk  Offline
Member
Joined: Jan 2003
Posts: 174
Middle of Canada
Quote
If this is an aux fan, wood burning dealers have this neat fan that just sits on top of the stove, and turns on and moves the air, with no electric hook-up. I don't know how they work, but they are pretty neat.

My sister and her hubby purchased one of these units for there stove and ended up returning it. They said the air that it moved was minimal.

There are a lot of thermostats made for green houses that will accomplish what you want to do as well although most of them wouldn't look so great in a residential application.
http://www.littlegreenhouse.com/accessory/controls.shtml


#71001 - 10/18/06 07:54 PM Re: Line voltage thermostat  
A-Line  Offline
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Joined: Jul 2004
Posts: 272
Utah, USA


#71002 - 10/18/06 08:34 PM Re: Line voltage thermostat  
JoeTestingEngr  Offline
Member
Joined: Nov 2005
Posts: 791
Chicago, Il.
Dayton controls has a ton of them, reasonably priced. I think the ones I used had a 22A resistive rating. Just pick a cooling or heating/cooling (SPDT) with the temperature differential that you want. They aren't at all aesthetically pleasing though. Ours came from Grainger. We use PSG Accustat units where we want fixed heating/cooling settings away from tampering fingers. They are not what you need here but are available in line voltage units, with up to two stages of heating and/or cooling.
Joe



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