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high pressure and loss of water to outside drainpipe

Postby stugal » Sun Nov 25, 2007 5:24 pm

we have a worcester 24i,the pressure rises when heating on to between 2.5--- 3.5, there is also a loss of water thru the outside drainpipe when this occurs Any solutions please
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Simply Build It

Postby DONFRAMAC » Mon Nov 26, 2007 2:32 am

I have been told by the plumbers installing my new condensing combi system, to expect to have to bleed the rads. once per month ond restore running pressure to at least 1 bar using the filling loop, then remove the loop, refitting the blanking caps to prevent passing valves from trickle-feeding into the system, which would cause blow-off. If your anti-corrosion additive is up to strength, there should be less generation of hydrogen in the rads., by water/steel corrosion. Have it checked and fortified at your annual service.
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