Technical Guide to Hot Water Boiler Systems
The choice of domestic central heating boiler often determines the method by which hot water is supplied. There are essentially two methods: instantaneous water heating and hot water storage. Does this Spark an idea?
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Combination Boiler
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A combination boiler heats water for domestic central heating, but also provides instant hot water for sinks, baths and showers. Faucets are fed directly from the mains rather than from a hot water storage cylinder, making this type of boiler system ideal for properties where space is at a premium.
Storage Tank
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Adding a hot water storage tank to a combination boiler system means that two or more faucets can be operated at the same time with no reduction in flow rate. Furthermore, unlike a conventional boiler and storage tank system, no recovery time is required and hot water never runs out.
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System Boiler
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A system boiler is a space-saving solution in which all of the major components are included in a single unit. A pump and an expansion vessel, which are usually installed remotely, are built in, along with a safety valve and an automatic air vent.
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