Sprinkler
Member
I have a sealed room boiler (with built-in hot water tank) which takes the water supply (for hot tap water) from an attic tank. I have a system in the house which turns on the heating at around 5 degrees celcius, in the case that the house is empty and the weather gets very cold, so as to avoid bursting pipes.
But would it be ok to also empty the water supply tank in the attic in case the temperature got low enough to burst pipes there. I have the hot water temperature set to the minimum (15 degrees - though in practice it would go above 20 degrees) and when the boiler turns on, this water heats up before the rads get hot. My doubt is whether the water level in the boiler tank might go down as the water heats and evaporates? Or should the water supply to the boiler always be available, eventhough no hot water taps are turned on? Thanks.
But would it be ok to also empty the water supply tank in the attic in case the temperature got low enough to burst pipes there. I have the hot water temperature set to the minimum (15 degrees - though in practice it would go above 20 degrees) and when the boiler turns on, this water heats up before the rads get hot. My doubt is whether the water level in the boiler tank might go down as the water heats and evaporates? Or should the water supply to the boiler always be available, eventhough no hot water taps are turned on? Thanks.