Working out a scheme for DHW

[scottishjohn]

Ok just to keep you happy --2 other ways which are used 

tracer wire around solar plumbing-or use the anti frost function on controller and circulate when temp drops below freezing 

the volume of water in the circuit is very low+  pipes would be lagged anyway  -so for the times when it is -2c water temp and lower turn on circulation pump via temp sensor 

 

 

Edited June 17, 2019 by scottishjohn

[jack]

I looked into all of this when I was planning what to put on our roof, and solar thermal just made no financial sense for my circumstances (admittedly helped by getting into the FiTs scheme just before the rate dropped to almost nothing).

 

I'd encourage people to do their own sums.

[scottishjohn]

16 hours ago, jack said:

I looked into all of this when I was planning what to put on our roof, and solar thermal just made no financial sense for my circumstances (admittedly helped by getting into the FiTs scheme just before the rate dropped to almost nothing).

 

I'd encourage people to do their own sums.

I would advise the same -and if using off the shelf system and tank i would agree with you .

the correct size and shape of tank will be very important to get best from it so its not just useful in summer