On Fri, 12 Jan 2007 09:46:48 +0000, Dave Fawthrop
||We have just purchased a Worcester-Bosch Greenstar Junior 24i
||Combi-Condensing boiler and the plumbing merchant said we would need a
||However, our builder is saying that we would not need to regularly top
||up the central heating water? What I don't understand is how the
||central heating water would be pressurised in the first place without a
|Maybe your builder wants to come back every so often and charge you call
|out fee for each visit.
||I know that larger boilers usually have this incorporated into the
||bottom of the boiler.
|If the pressure gauge falls below whatever the boiler instructions
|indicate, you should use the filling loop to increase the pressure to
|within the limits. This may only be required *infrequently*
but it is best
|to insist on having a filling loop fitted. All plumbing has slight leaks
I should have included bleeding radiators. All water contains dissolved
air, and in central heating systems this bubbles out and ends up in,
radiators causing the top of a radiator to be cooler than the bottom.
Removing this air by bleeding radiators is a common DIY chore. After
bleeding radiators the pressure in a combi-condensing boiler reduces, often
requiring increasing pressure by use of the filling loop.
Dave Fawthrop <dave hyphenologist co uk> Google Groups is IME the *worst*
method of accessing usenet. GG subscribers would be well advised get a
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