Thanks, See the latest post.Photo of the Unvented? With a picture of the pump and motorised valves etc. I assume they're all in the airing cupboard?
Discuss Air in heating g system - Already had two plumbers fail to diagnose. in the USA area at PlumbersForums.net
Thanks, See the latest post.Photo of the Unvented? With a picture of the pump and motorised valves etc. I assume they're all in the airing cupboard?
The guy pressure tested it at 2 bar. He said he didn't want to go any higher just in case.The air is being sucked in via the vent so if you seal it the air wouldn’t get in also you would run it at a pressure of 1 bar not 6
you’ve said you had it pressure tested for leaks so in theory the system would be ok sealed
try turning the pump speed down to 2 it’s on 3 atm
Yes. I never knew they run at 1 bar. But is that really the solution? And again, is it not just masking an underlying issue that may come back to bite me even with a sealed system?You would be fine sealing it then
There should be no sludge of any description in that tank.Thanks for the replies. Here are some photos of the unvented tank and components around it. I have also attached a vid up in the loft showing the feed and vent pipes and a few photos. At the end of the video, the pipes drop down to the airing cupboard (hot water tank).
I considered sealing the heating system when we replaced the vented tank, but it was spending money on something that to my knowledge at the time provided no additional benefits. The heat-only boiler was replaced before we considered the extension, so we never considered an alternative (the old one died on us so we just needed a new one asap). We also have very high water pressure coming into the house (6 bar which I assume you’d have to limit) which is great for showers but scares me a little connected to a 25-year-old heating system. If I was to replace the open system with a sealed system am I not just masking the underlying problem? Would the air currently going into the F&E tank instead just trigger the pressure release valve?
John.g – you said it looks like there’s been something wrong for a long time based on the condition of f&e. Can you elaborate a little? There’s a thin layer of sludge at the bottom but other than that it looks ok to me.
Thanks again.
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