Recent content by sharpo

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    Air in radiators/tank overflowing - problem solved

    Just thought I should bring this to a close. My wife asked a friend, whose brother had a best friend that happened to be a plumber! I described the problem to him over the 'phone, also said what BG had said about needing a powerflush because "there was a blockage". Explained where feed & vent...
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    Air in radiators/tank overflowing - problem solved

    Thanks for the replies folks. Haven't been able to make any progress over past couple of days, will try & get it sorted somehow next week. Won't be doing it myself, might have tried it years ago - but not as young as I used to be....... I have noticed that when the pump is only pumping...
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    Air in radiators/tank overflowing - problem solved

    The flow & return are at the top of the tank, it is one without an immersion heater. So the cold feed & vent need altering then? I don't know much about these things (obviously) but just found it strange that it was OK before the pump was changed. Suppose the new pump is more powerful then...
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    Air in radiators/tank overflowing - problem solved

    Hope this is the final drawing, think I have managed to fit it all in more or less as it appears.
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    Air in radiators/tank overflowing - problem solved

    Done that - it is on lowest speed, tried that straight away
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    Air in radiators/tank overflowing - problem solved

    Will try & add vent, pump & valves to drawing tomorrow, pump arrow does face up. The old pump was on slow speed, and radiators rarely needed bleeding, just the one in the bathroom where the hot water tank is (perhaps every few months) Boiler is a Potterton Kingfisher. That's me done for...
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    Air in radiators/tank overflowing - problem solved

    Less complicated drawing this time Hot water tank showing the outlet pipe to boiler, the auto vent is a foot or so above the hot water tank. The cold supply from header meets it at floor level. I can't get the red pipes on same drawing without confusing myself, but hope it is clear to...
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    Air in radiators/tank overflowing - problem solved

    Thanks guys, got sidetracked, sorry about time taken to reply. Excuse the drawing, I'm no artist! Missed off one of those automatic vents connected via a T connector a foot above the top Honeywell control valve. I've marked in RED the pipes which are hot & from the boiler, the black...
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    Air in radiators/tank overflowing - problem solved

    Found it, on the black part at the back - it points up, which seems correct to me.
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    Air in radiators/tank overflowing - problem solved

    Here's a pic. The diagonal pump at the front is just cold water pipe to wash basin, so ignore that. Valve to left of pump is to rads & upper one is to hot water tank. The header tank for hot water is in this airing cupboard, the one for heating system is higher up in the loft. Hope the pic helps.
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    Air in radiators/tank overflowing - problem solved

    Can't see any arrow on the body of the pump????? Not an expert on this but I think the vent is connected via a T connector below the bottom valve. Isolation valves are open (water flowing) if that is what you mean. Thanks for reply, hope mine makes some sense to you.
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    Air in radiators/tank overflowing - problem solved

    Had the pump replaced a few weeks ago, now the system keeps getting air bubbling round and into the radiators and the header tank overflows. The ballcock valve does work. Seems the pump is more powerful than the old one and at times I can feel air drawn in through the pipe above the header...
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