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long draw off too long

Postby simon.rowden » Thu Jun 04, 2009 1:32 pm

hi can you please tell me the answer to this question please.

if long draw off cannot be avoided what method of heating water could be used.
single point gas heater,condensing boiler,immersion heater or a combi boiler.

anyone with the answer would be much appreciated.
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Simply Build It

Postby Steve the gas » Fri Jun 05, 2009 5:33 am


You can go for a storage of water in a cylinder vented/unvented.

Get a good rgi in to advise and quote.

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Postby htg engineer » Fri Jun 05, 2009 1:57 pm

'long draw off too long'

It doesn't matter what system you have, if the water lies in the pipework and cools it's going to take time for the hot water to come through - the time it takes depends on the length and size of the pipework. Reducing the distance between the boiler/heater and the water outlets will help alot.

The only way really, is what Hospitals have - their hot water systems are on a pumped continuous loop, so the water is always circulating - therefore always instantly hot, for example the wash basins wont have a single pipe going to each tap, they will tee into a ring/loop (there's no dead ends).

Hope this helps.
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