EcoRenovator - View Single Post - best temp. differentail for hot water solar system

Xringer · 01-03-12, 08:23 AM

If you are not worried about over-heating your storage tank water,
then you can set the pump to start, when the collector is 5 to 10 degrees warmer than the tank.
Turn off the pump when tank temp = collector temp.

A problem might occur, if you have too much collector gain and your tank temp
gets so hot, the controller shuts the pump off. And the collectors over-heat.
Your coolant or collector might be damaged.?. IIRC, it's called Stagnation.

I think the type of damage depends on system components used.

01-03-12, 08:23 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 are not worried about over-heating your storage tank water, then you can set the pump to start, when the collector is 5 to 10 degrees warmer than the tank. Turn off the pump when tank temp = collector temp. A problem might occur, if you have too much collector gain and your tank temp gets so hot, the controller shuts the pump off. And the collectors over-heat. Your coolant or collector might be damaged.?. IIRC, it's called Stagnation. I think the type of damage depends on system components used. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..