Hello,
I think we are not sure what your question is. :-)
You have to start with a boiler to heat the water, providing both hot water for washing and hot water for the central heating, but there are different sorts of boiler.
The traditional sort of boiler is a regular or a System boiler, which produces 'washing hot water' stored in a tank. The temperature controls for this are (1) a thermostat on the water storage tank, (2) a thermostat in the hall or somewhere similar to control the central heating, and (3) an electric timer to control what times of day the boiler can come on.
Since 2005 in the UK, by Law new boilers have to be 'condensing' in type, that is to say of the more efficient sort which can recover extra, useful heat from the boiler steam.
A more responsive sort of boiler is the 'Combination' or 'Combi' boiler, which only comes on 'on demand' for hot water, - i.e. only when you turn the hot water tap or the shower on. In this type, there is no reservoir tank for 'washing hot water.'
Hope this helps. Belliger
2007-11-05 03:41:40
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answer #1
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answered by Anonymous
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They use thermostats, just like any other heating system.
2007-11-05 03:37:48
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answer #2
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answered by sensible_man 7
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