Luke said
No drawings sorry, I knew when I was doing it I should have taken pics. DUH !!
Self contained is just that.
Through the radiator (floor) in pvc piping, to the pump, up to the solar panels, heated, then back to the piping.
It could be controled so that as the water flows cold it turns off then as it warms, it obviously turns on.
This could be done by solinoid-switches, which I know zip about.
If I find that the system does get too hot, I have made provision to extend the pvc piping to other fishromms for heating.
The solar panels were ones that I goy yonks ago as something that might come in handy, those that have paid me a visit, realise that I have a lot of come in handies around the place..
The panels are copper pipe system, run in a black enclosed metal case with glass front.
They measure about 120mm square and I have provision to use four of them, but I think that would be over kill.
Alan 104