Pressure on CH system.


Postby citroen » Thu Oct 16, 2008 5:57 pm

I recently got gas central heating fitted by Scottish gas.The boiler is a Worcester Greenstar 28i Junior.Could anyone give me advice on the following:-
1.The engineer told me if I bled a radiator,the system/boiler woyld lose pressure and the CH would not work until I repressurised it.Could anyone tell me how to do this and what pressure do I put it to?
2.I am needing to change a couple of tap washers.I would be turning the water off at the rising mains before I did it.Would this cause pressure to be lost or does this not affect it?
Thanks for any help.
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Postby Steve the gas » Fri Oct 17, 2008 4:09 am

Hi Citroen,

1. The pressure on boiler guage should be between 1 to 1.5 bar.
This is done via the filling loop but on yours it might be a Key tap design, read the instructions in your boiler manual.

2. No it won't affect your boiler pressure, but, obviously you won't get any hot water with mains turned off.
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Postby citroen » Fri Oct 17, 2008 12:12 pm

Thank you very much for your reply.It has been very helpful.As to looking in the boiler manual,I think it is written for a tradesman.I do not understand what to do so I think I will get a heating engineer when it is required.
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Postby citroen » Fri Oct 17, 2008 12:15 pm

Thank you very much for your reply.It has been very helpful.As to seeing the manual for pressurising the boiler,I don't understand the manual so I think I'll be getting a heating engineer if it becomes necessary.
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