How does the heat from the sun get to us, why does it not just go straight up in to space to never be felt again by anyone in this universe. Surely the sun is higher than us, we don't look down to see...
I have a central heating system run from a Potterton Suprima 60L condensor boiler which operates radiators and hot water through a 3 way diverter valve, which i have recently had replaced along with...