1 thermostat for 2 4000 fan forced heaters?


  #1  
Old 05-06-16, 09:26 AM
H
Member
Thread Starter
Join Date: Oct 2010
Location: USA
Posts: 237
Upvotes: 0
Received 0 Upvotes on 0 Posts
1 thermostat for 2 4000 fan forced heaters?

I have been searching the internet and am having a hard time finding a thermostat to control two wall mounted fan forced electric heaters. Each heater is 4000 watts. Most of these larger heaters come with a control knob directly on the heater itself. I was wondering if there is a wall mounted thermo out that that I can run both of these on or if no such product exits. I have found a few but they are only rated to 4000 watts.

Thanks
 
  #2  
Old 05-06-16, 09:45 AM
P
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 27,592
Received 2,144 Upvotes on 1,920 Posts
8kw is a awful lot to ask of a thermostat. If you can't find a product ready made you might have to DIY something with a relay or motor controller/starter. Think industrial control type stuff.
 
  #3  
Old 05-06-16, 11:38 AM
Tolyn Ironhand's Avatar
Group Moderator
Join Date: Nov 2007
Location: United States
Posts: 14,319
Received 874 Upvotes on 737 Posts
The only way to do this is with a relay, as Dane suggested.
 
  #4  
Old 05-06-16, 01:47 PM
H
Member
Thread Starter
Join Date: Oct 2010
Location: USA
Posts: 237
Upvotes: 0
Received 0 Upvotes on 0 Posts
Something like this is what you are referring too? I believe it handles 2 5000 what heaters. Cadet 10 KW 240-Volt to 24-Volt 2-Circuit Electric Heating Relay with Integral Transformer R841E1068 at The Home Depot - Mobile.
Can this be mounted to a juntion box right outside the mail panel and then the runs made to both heaters and the thermo?
 
  #5  
Old 05-06-16, 01:56 PM
Tolyn Ironhand's Avatar
Group Moderator
Join Date: Nov 2007
Location: United States
Posts: 14,319
Received 874 Upvotes on 737 Posts
Yes, something like that should work. You would then just run some cable to a single standard heat only thermostat. Really any thermostat will work.

Can this be mounted to a juntion box right outside the mail panel
I haven't seen one close up but I would suspect next to the panel would be the best spot for it.
 
  #6  
Old 05-06-16, 03:34 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Jersey
Posts: 64,816
Received 3,922 Upvotes on 3,518 Posts
Good choice for what you need to do. Next to the panel is the easiest place to locate both circuits.
You could also locate both circuits to a common junction box in the garage.

If these are direct wire in heaters..... by code you need a service disconnect means at each unit.
 
  #7  
Old 05-09-16, 03:31 PM
H
Member
Thread Starter
Join Date: Oct 2010
Location: USA
Posts: 237
Upvotes: 0
Received 0 Upvotes on 0 Posts
One last question. The heaters usually have a cool down period where the fan runs after the element turn off. With this that feature this will not work. Is there any downfall by not having the cool down? Is it dangerous to just have the entire unit kick off with the element still hot?
 
  #8  
Old 05-09-16, 03:58 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Jersey
Posts: 64,816
Received 3,922 Upvotes on 3,518 Posts
Is it dangerous to just have the entire unit kick off with the element still hot?
Absolutely not. The element will still give off some heat that will rise to the ceiling. It is not harmful to the heater.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: