thermal controller

greif · 05-19-13, 08:08 PM

Anyone know of a low cost thermal controller, in the summer I run my panels through a heat exchanger and into the pool, just looking for a low cost or if any one has a used controller. I want to turn pool pump on with it so would like a 20 amp if possible, pump motor is only 15amp but would like a little heavier.
Thanks
Gary

Xringer · 05-20-13, 09:44 AM

If you wanted to boost the wattage of a standard controller, you could do it easily with a 25A SSR.
Just plug in a wall-wart to the controller's 120vac output and use the DC to switch on the 25A SSR.
Which will control the 20A ac line into your motor..

25A SSRs are only a few bucks on Ebay..

http://i46.photobucket.com/albums/f1...r/P1000835.jpg

My old controller only ran 10A max..
http://i46.photobucket.com/albums/f1...r/NCL/F015.jpg
http://i46.photobucket.com/albums/f1...r/NCL/F017.jpg

But it would be cheap and easy to boost it's power capabilities.

Be aware, that 20A x 125vac is about 2.5kw and most household sockets won't handle that kind of power. (15A breakers or fuses).

05-19-13, 08:08 PM	#1
greif a van down by the river Join Date: Jun 2011 Location: Kaukauna,WI Posts: 108 Thanks: 6 Thanked 5 Times in 5 Posts	thermal controller Anyone know of a low cost thermal controller, in the summer I run my panels through a heat exchanger and into the pool, just looking for a low cost or if any one has a used controller. I want to turn pool pump on with it so would like a 20 amp if possible, pump motor is only 15amp but would like a little heavier. Thanks Gary __________________ Gary R “If you want total security, go to prison. There you're fed, clothed, given medical care and so on. The only thing lacking... is freedom. ” ― Dwight D. Eisenhower

05-20-13, 09:44 AM	#2
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	If you wanted to boost the wattage of a standard controller, you could do it easily with a 25A SSR. Just plug in a wall-wart to the controller's 120vac output and use the DC to switch on the 25A SSR. Which will control the 20A ac line into your motor.. 25A SSRs are only a few bucks on Ebay.. http://i46.photobucket.com/albums/f1...r/P1000835.jpg My old controller only ran 10A max.. http://i46.photobucket.com/albums/f1...r/NCL/F015.jpg http://i46.photobucket.com/albums/f1...r/NCL/F017.jpg But it would be cheap and easy to boost it's power capabilities. Be aware, that 20A x 125vac is about 2.5kw and most household sockets won't handle that kind of power. (15A breakers or fuses). __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..