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  1. N

    Boiler replacement

    Thanks Vulcan. Along with Johntheo definitely the way to go
  2. N

    Dreaded air in upstairs radiators and heating is off

    Thanks for clarification John so the other side I just leave open. I am an electrical engineer haha
  3. N

    Dreaded air in upstairs radiators and heating is off

    Sorry John but Looked for a valve that could be suitable. So original feed pipe goes into one side. What do I do with the other side?
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    Dreaded air in upstairs radiators and heating is off

    Plastic bag in place and will run for a few days. Just one question now if I end up with combined vent and feed solution I will install a valve as suggested. Do I leave the other side open or make a blank
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    Dreaded air in upstairs radiators and heating is off

    Thanks John. Will give the plastic bag a go first. This my feed and vent just before going into the loft. So I can disconnect 15 mm elbow and t into 22 mm vent? Then cap disconnected feed pipe here and connect lever isolating valve/gate valve. ps never got round to filling ceiling gaps properly
  6. N

    Dreaded air in upstairs radiators and heating is off

    Thankyou for detailed response John. The original cold feed was directly above the pump on the horizontal flow pipe. I was advised on this site to move vent and feed closer together. This morning with the help of my wife I have performed a number of tests. With the pump circulating I held my...
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    Dreaded air in upstairs radiators and heating is off

    John your continual support is most appreciated. Just one extra piece of information I have not replaced a radiator. A little more detail on previous boiler did have air ingress on that system and that's why the H was modified and that did not have any effect so my hesitancy on changing to...
  8. N

    Boiler replacement

    So you have used this configuration to solve air ingress issues on typical H configuration
  9. N

    Boiler replacement

    Any thoughts on a temporary fix to prove that going to combined feed and vent would work?
  10. N

    Boiler replacement

    Great advice. Along the same lines as others.
  11. N

    Dreaded air in upstairs radiators and heating is off

    John as my cold feed is 15mm would it work to t that short piece of pipe to the vent pipe
  12. N

    Boiler replacement

    Cold feed is 15mm
  13. N

    Boiler replacement

    Lot to think about going forward and stopping air in the system. Thankyou to all who have assisted
  14. N

    Dreaded air in upstairs radiators and heating is off

    Pretty confident that Boiler is correctly piped. Can only be a problem if previous boiler was incorrectly piped. I am getting the engineer back to sort the issue. I just want to ensure he has as much info as possible to come up with the right solution. Attached is the page from Baxi manual...
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    Dreaded air in upstairs radiators and heating is off

    John many thanks yet again for your invaluable support. So in my set up I can leave the vent pipe arrangement exactly as it is now. Do I tee the flow pipe with 15mm or 22 mm pipe. It would be approximately 200 mm long at ceiling level
  16. N

    Dreaded air in upstairs radiators and heating is off

    Hi John On your photo of combined vent and feed. Presume connection into tank is 15mm Vent pipe is 22mm. Is the pipe going to the pump 15mm?
  17. N

    Boiler replacement

    I agree John
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