Can you fit a combi boiler on a one pipe system?

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Will a one pipe central heating system work with a combi boiler?

I want o replace my boiler with a combi boiler but I have a one pipe central heating system. will this work or do I need to convert to a two pipe system. A one pipe system is ok for a combi boiler although it does have pitfalls.

Can I run a combi on a single pipe system?

Yes, a combi will work fine on a one pipe system, but there’s a couple of things you need to be aware of. 1) As mentioned above, the last rads on the loop could run cooler than the others unless you keep the supply temp up.

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Can you fit a condensing boiler to a single pipe?

You can fit a condensing boiler to a one pipe. I’m not entirely sure why you would go to such expense in making your home look beautiful whilst ignoring the mechanical infrastructure. True, any boiler will do the job but will your old system shorten the life of your new high efficiency boiler.

Does a 15mm condensing Combi work on a one pipe system?

I have just that setup – a ‘new’ condensing combi on a one-pipe system (which is only 15mm for a large part of its run!) Yes, it’s slow to heat up, and the last rads on the system don’t get as hot as the initial ones, but it does work.


Plumbing – HOW TO INSTALL A ONE PIPE CENTRAL HEATING SYSTEM


More about Can you fit a combi boiler on a one pipe system?


1. Will a combi boiler work on a one pipe system?

Apr 19, 2020 · A one pipe system is ok for a combi boiler although it does have pitfalls. Modern boilers require a constant flow rate so any blockages will cause the boiler to overheat and cut out fairly quickly. Click to see full answer. Likewise, what is a 1 pipe heating system?

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2. Combi Boiler and one-pipe system – Screwfix Community Forum

Oct 11, 2005 · Theoretically a one pipe system will work very well on a condensing boiler but the last few rads will be very cool. Not necessarily a problem in bedrooms IF its the same owner who has got used to that! Some one pipes have no rad valves. Repiping can add about £500 to £1000 to the cost so its very significant.

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4. combi boiler on a single pipe system. | PlumbersForums.net

Sep 15, 2017 · Most of the heat output of a boiler is used to heat the house – apart from a small amount lost from pipes in unheated parts, e.g under the floor. So if 5% is lost there is still 95% left to heat the house. The boiler may be only 70% efficient – or less if it’s very old – but that has nothing to do with the piping system. A.

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5. One-pipe system with combi boiler? | DIY Doctor UK DIY Forums

Jan 26, 2009 · It’ll work, but two pipe systems are preferred. Personally – I would upgrade to a two pipe system. New pressurised boiler, old pipework and old rad valves aren’t a good combination, for a few reasons – prone to leak, any sludge etc off old system will block the waterways of the new boiler if not flushed properly.

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6. Advice on new boiler for one pipe central heating system

Apr 28, 2012 · Many condensing boilers will work fine on a one pipe system. However, there are two aspects you need to be aware of. Old boilers are designed for a flow of 80 C whereas for a condensing boiler its 70 C although you can up that to 75 C without much loss of efficiency. Condensing boilers are designed for a return 20 C below the flow.

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8. Replacing a conventional boiler with a combi boiler: pipes

54787. This in principle should be a simple conversion from an open vent to that of a sealed system. Some of the pipework alterations will be confined to the airing cupboard where your existing hot water cylinder is located but the majority of works will be at the new boiler location. If the new combi boiler will be in the same location as your …

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9. Combi Boiler Installation: Everything You Need To Know Before You …

Install new gas combi. – Install new central heating system with combi boiler. £3,230 – £4,350. Replace gas combi. – Replace boiler at same location. £1,270 – £2,180. Replace gas combi. – Replace boiler in new location. £1,995 – £2,550.

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10. Can I put a combi boiler in an airing cupboard? – Quora

Answer: Most probably this is permitted by the manufacturers. Most boilers don’t require additional compartment ventilation. However, in general, airing cupboards tend not to be on the exterior of the house. This means you are likely to require …

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