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Discuss Combining feed and vent piping from F and E tank in the Central Heating Forum area at PlumbersForums.net
Combined vent and cold feed is more common than you imagine. As long as its a minimum of 22mm you'll be fine.
Combined vent and cold feed is more common than you imagine. As long as its a minimum of 22mm you'll be fine.
Thank you for your prompt reply and yes, it is 22mm.
No worries buddy. The only thing I will say about that particular design is sometimes it can prove problematic filling the system from empty and displacing the air
In my opinion, you would be better to pipe it correctly if you can do.It would save me a lot of faff if it was acceptable to combine the feed and vent in the manner shown in diagram below.
Or should I resort to separate pipes for each, as small sketch.
Boiler is Potterton Suprima
View attachment 44993View attachment 44994
I would be grateful for your advice.
Thanks
Rudy
Primary open safety vent.Given there's not a check valve in the outlet of the F&E tank I've never understood the need to the vent.
I always make sure the cold feed is sloping slightly upwards on the 'horizontal' part of the pipework towards the F&E tank, to ensure the air escapes. There's then no real need for a vent pipe back into the tank (saves pipe, insulation and the faff of cutting the lid.
The manufacturer's install manual actually shows it as combined, albeit a quite rudimentary diagram, but thanks for your input.Not all manufactures advise combined F& E pipes .
Reply to Combining feed and vent piping from F and E tank in the Central Heating Forum area at PlumbersForums.net
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