I'm leaving for a new job 200 miles away. I haven't yet sold my
house, so I'm going to have to leave it empty for a while. What
should I do with the central heating? It's a standard boiler fed from
a header tank, with a pump, radiators, a hot water tank and a
three-way valve.

I presume turning everything off entirely is not a good idea?

I thought of leaving the heating setting to 'On' permanently and
setting the room stat to low, just in case we get a late frost.
Should I also set the hot water to come on for a few minutes, just to
keep the three-way valve turning, and also to ensure that the boiler
does fire up at least once a day?

With the C/H running, I can't turn off the gas or electric. What
about the water?
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Hugo Nebula
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