I have just bought a new house, and the person who installed a new boiler some time ago took the easy route, connecting to the exisiitng pipework despite it making the pipe runs hugely long. The system seems to work - standard open vent system, with oil boiler. However, the boiler vent and the cold feed from the expansion tank are connected into the return to the boiler just underneath the expansion tank (the boiler is on the ground floor) - is this a problem? My major concern is that the vent and the feed are after the zone valve for the CH - so if only the HW is on, there is no vent other than on the return from the CH which is not actually on! It also means that the boiler would have to vent against the return from from the HW tank - this cant be correct can it?
CH Vent and cold feed on boiler return - is this a problem?
- Thread starter D4dog
- Start date
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i would say this was sometthing to be urgently attended to, although it hasnt caused a problem up to now, if/when there is a prob the near boiling water wont get up the vent
Kirkgas - problem is, how to fix it? I could connect vent to CH supply, but it would be after the valve, and also the pump - result is same. I could move the valve for the CH right up to the point where the vent ( lazy plumbing - couldnt be bothered to re-route radiator feeds) is, but then I have a worse problem - vent will be before CH valve, but after pump - so the resitance met when CH valve closes with HW on will force all the hot pumped water up the vent!
So what are my options?
So what are my options?
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