I've got a 'Main Medway Super' multipoint gas water heater which seems to not to be able to provide 'piping' hot water any more, I've adjusted the dial on the front (which I think just reduces the water flow) to raise the temp but now theres no more adjustment left and the water is not really hot. I'm wondering if its scaled up. It was installed in 1999 and has been well used since then. Are there any other possible causes (I know its cold outside but this has been the case over last 18 months) and if it is scale what the best way to clear it; caustic soda or buy a new heat exchanger? I want to keep the boiler so I'll have to do whatever it takes. Incidently this is the first fault in 14 years as it has not even got a circuit board or mains connection, love it!ThanksM

Has it been serviced regularly, or just left to its own devices? Burners lose efficiency over time, and if they're running rich, carbon gets deposited on the heat exchanger, which reduces the heat transfer rate. If they run start to run lean, then the heat from the flame is reduced.As for whether it's scaled up, you don't mention if you are in a hard water area or not.

Main Medway Super Scaled Up?

Jan 21, 2013 Last reply: 6 years ago 22 Replies

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Andrew 5 years ago

Only posted 7 years ago !!

Andrew

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Andrew 5 years ago

Or perhaps he left 'girl' off the end of the sentence.

Andrew

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Tim+ 5 years ago

For reasons that I?ve explained to you several times.

People are responding to HOH ?promoted? posts that HOH display without any date. Clearly HOH is only interested in increasing traffic, not increasing

*useful* traffic.

Users of the site are fooled into thinking that these are recent posts. The link that is tagged on to their posts links to the original message that *does* show the date.

They?re not innumerate, they?re just being fooled by a system designed to deceive.

Tim

Brian Gaff \(Sofa\) snipped-for-privacy@bluey> Yes having looked at this I have to assume that users of that particular

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