I'm changing the taps in my bathroom so I've got to turn the water off under
the sink , obviously. Will this stop the central heating from working or
does it work off a different supply. We have 2 tanks in the loft one big and
one small which I think.is the header tank.
Sorry if this a stupid question only that I need the heating on as the baby
Thanks in advance.
If as you say you have 2 cisterns in the loft then the heating and domestic
water supplies are separate. Turning off the mains inlet water supply will
not affect the heating.
The valve under the sink will probably just turn the water off to the cold
tap; there will be a separate valve for the hot water. This valve will
likely be beside the hot water cylinder. It you cannot find the hot water
valve then you will either have to turn off the supply to the large cistern
in the loft and drain it down or tie up the ball valve in it and again drain
it down. Turning off the mains inlet water supply will of course stop the
flow into this cistern so you can then drain it down, best of all though is
to find the hot water valve.
When you say the sink I assume you mean the kitchen sink. There should be
valves under the wash basin in the bathroom enabling you to disconnect the
Actually, that won't turn off the hot water, and possibly not the
cold in the bathroom either.
First, check to see if there's an isolating valve in the
pipework under the sink. If not, you'll have to turn off the
outlets from the larger header tank. These will probably be gate
valves in the airing cupboard, one on the pipe going into the
bottom of the hot water cylinder, but I can't say where the other
will be in your installation. Gate valves often won't completely
turn off, so you might be left with a slow trickle. Sometimes
turning on another tap in the house will divert this trickle
to it instead. Be sure not to turn off any valves relating to
the heating system, some of which might be adjusted to specific
positions partway between fully on and fully off.
It works off the small header tank, and will continue working
providing you don't touch any valves relating to it.
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