Do you need hot and cold water tanks with a combi boiler? Hi - I am interested in buying a house which has had a combi boiler fitted relatively recently. However the cold water tank is still in situ (very inconveniently above the bath!) and there is a hot water tank in

2011-1-26 · boiler keeps getting air locks, why? The hot water outlets pipes from the boiler get scalding hot but the airlock is causing the stat to trip out I think? Either way the hot water never

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Old boiler was early 1980's, cast iron water jacket, typical efficiency ~ 60 to 70% at best. New boiler is between 85% and 90% efficient, plus being a combi it only heats hot water when needed. Our gas bill dropped from around £1100 to £1200 per year down to between £750 and £850 per year.

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Boiler heat exchangers. In a boiler heat exchanger, heat is transferred from the hot gasses of a combustion process to water moving through the exchanger's internal piping system. As a result, the water heats up as the gas cools down.

Immersion heaters- the right way. 25th Oct 2016 . The energy intensive world in which we live means that energy saving advice is part and parcel of daily conversations. At the Hot Water Association we hear a lot of suggestions ranging from the sensible to the absurd. generally if there is a boiler in the property then it's more economical

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Two Stage Hot Water Boilers from Raypak. Designed to supply hot water needs for commercial and industrial applications. Ideal for use in Car and Truck Wash applications. Replacement boilers come with pump and motor, pressure valve, temperature relief valve and draft hood. (Packages with boiler and storage tanks are also available).

If it moves through the floor to fast it would arrive back at the boiler too hot, which would hurt efficiency. Conversely if it moves through the circuit to slow the water may be too cold to be of any help at the end of the loop. So on these types of systems you need to run the math and pick the correct pump. 2011 for hot water radiant

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2011-1-26 · boiler keeps getting air locks, why? The hot water outlets pipes from the boiler get scalding hot but the airlock is causing the stat to trip out I think? Either way the hot water never

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Two Stage Hot Water Boilers from Raypak. Designed to supply hot water needs for commercial and industrial applications. Ideal for use in Car and Truck Wash applications. Replacement boilers come with pump and motor, pressure valve, temperature relief valve and draft hood. (Packages with boiler and storage tanks are also available).