Hi guys I need to run the open vent and cold feed coming off the flow pipe of a boiler approx. 3 metres.. will this be a problem... Initially they will raise up flow pipe about a 1metre but then need to run horizontally for the 3 metres or so and then raise up again to attic.
open vent & cold feed horizontal run
- Thread starter sitja
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So in theory should work. I had another topic open based on the f&e tank only having 15mm cold feed but no vent, Im coming to the conclusion its a combined system but with plumber deciding NOT to do it in 22mm,, the boiler has a safety valve coming off the boiler so maybe he thought this was sufficient..
M
mysteryman
It is best to keep a gentle rise on the 'horizontal' sections, or run the horizontal section of the vent at above water level. It will still need insulating if in an unheated space.
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D
DeltaT2
What kind of boiler is it fella??
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Depending on the boiler it may be better to convert to a sealed system,but seeing as its got a safety valve it may not be suitable.
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safety valves were usually fitted on older boilers which didn't have overheat protection,as its on the pipework its probably been on since the system was installed & the boiler is a later addition.A Prima f can go on a sealed system.
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It will be best to plug it off as they often leak.You will need a pressure relief valve fitting to the system anyway with a sealed system.
D
DeltaT2
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