Hi, I'm going over to the Isle of Wight for 3 months over Christmas and New Year and I don't want to come back to burst pipes. What do other members think is a sensible temperature to have on in the bungalow while I'm away? The loft has just been insulated and a new jacket placed around the header tank. I have a Megaflo cylinder and the underfloor radiator pipework is plastic. I'd be most grateful for your thoughts.