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expansion

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  1. N

    Seeking advice on my expansion vessel

    I have a Vitodens 100-W WB1B 26 kw system boiler. Which I believe needs a new expansion vessel, due to when I tried checking the pressure in this vessel, I had water spray out from the valve ..... Am I right that a split may have occurred ? If so, is it a simple job to exchange new for old...
  2. S

    Sometimes water dripping from expansion overflow and sometimes sudden water discharge

    Hi, I have: - - an open vented central heating system with F&E tank in the loft. - Sealed cylinder hot water (megaflow). Guess it won't matter with the issue explained below - Boiler is flexicom hx30 heat only. Most often (but not absolutely everytime), water drips from the expansion tank...
  3. A

    Gunk escaping from cyclinder expansion vessel joint

    I have just moved into a new flat which has an unvented hot water cylinder. There is some very disgusting gunky looking stuff around what appears to be a leaking joint/valve going into the expansion vessel. At first I thought it was from a botched repair attempt using some kind of foam sealant...
  4. S

    No filling loop and red expansion vessel installed. How to represurrize heating?

    Hi, I need bit of an advice about finding the filling loop in my heating system. Apologies for long description but thought to cover as much so relevant solutions can be suggested. I have spent endless hours searching internet including this forum and everywhere it is mentioned there must be...
    • samsg30
    • Thread
    • expansion expansion vessel filling heating vessel
    • Replies: 28
    • Forum: Central Heating Forum
  5. S

    Expansion tank overflowing

    My expansion tank keeps overflowing and my overflow pipe is blocked ,so water keeps coming through the ceiling. Had plumbers in twice and had tank emptied and new ballcocks fitted to cold water tank and expansion tank. They are unable to access overflow as it is in a very tight space they say...
  6. I

    Expansion Vessel Thread!!?

    Hi, does anyone happen to know what the thread size is on a Baxi 105 HE exp vessel. Its certainly not 1/4 o 3/8, really struggling as I need to site the vessel away from the boiler and unable to send back.
  7. A

    Leaking Zilmet 11A solarplus expansion vessel

    Hi all, Got a customer with a leaking expansion vessel on the solar thermal side of the system that is installed. The solar thermal system is a Kingspan solarplus with a flat roof collector and the expansion vessel has started to leak on the weld area. There is an indirect solar tank by...
  8. W

    Baxi combi 105HE expansion vessel replaced

    Hi" folks I am new to this site and was wondering if anyone could help me with my boiler problem,s. this is how it all started, my boiler was loosing pressure and had to be topped up every day, thought I solved the problem by repairing a split pipe,this seemed to cure fault for about a week then...
    • Wjl52
    • Thread
    • baxi combi expansion expansion vessel vessel
    • Replies: 2
    • Forum: Central Heating Forum
  9. D

    expansion vessel cordless inflator

    hi guys having recently struggled to top up the pressure in expansion vessels i am looking to get a cordless tool that should make the job a little easier. finding a good one though seems a little more difficult, a little bit of research points me in the direction of the bosch pag 12volt but...
    • Deleted member 44451
    • Thread
    • expansion expansion vessel vessel
    • Replies: 30
    • Forum: Central Heating Forum
  10. M

    pex expansion looping

    greetings... just a quick question im putting pex into a chased brick wall to be rendered over and was wondering if there will be any expansion issues as i read pex can expand up to 15% and placing an expansion loop in stud walls is standard My pex is in insulated but ive no way to put in a...
  11. S

    Glowworm cx30 flexicom prv or expansion vessel fault

    Hi, my boiler was consistently dripping from the expansion vessel with the pressure at about 2 bars or higher with fault f1. I was told to bleed a radiator and pump air into the expansion vessel , so I did up to about 4 psi. Suddenly something gave and water gushed out of the safety pipe outside...
  12. B

    External expansion vessel

    Bought an expansion vessel from toolstation with mounting bracket. What a pain didn't come with locking nut to hold to bracket. I used 3/4 backnut but them female iron would not bottom out as nut was to thick.
    • buckley plumb
    • Thread
    • expansion expansion vessel vessel
    • Replies: 6
    • Forum: Central Heating Forum
  13. M

    expansion vessel horizontally

    Can an external expansion vessel for a central heating system be fitted horizontally?
  14. D

    Expansion pumping over

    Hi I have an S plan heating system with a deaerator fitted and a Grunfos 15-60 in a 19 rad system When I run the pump on full it pumps over the expansion The cold feed isn't blocked It doesn't pump over on hot water only This is a new occurence as it never happened before I am a retired...
  15. D

    Expansion pumping over

    Hi I have an S plan heating system with a deaerator fitted and a Grunfos 15-60 in a 19 rad system When I run the pump on full it pumps over the expansion The cold feed isn't blocked It doesn't pump over on hot water only This is a new occurence as it never happened before I am a...
  16. S

    Expansion vessel problems

    I'm hoping that someone can help me. I have a pressurised indirect hot water system, and I noticed last summer that there was water dripping at the tundish. I measured the pressure at the top of the expansion vessel and found it to be zero. I therefore called in a plumber to take a look. He...
  17. W

    Dirty expansion tank

    Hello folks My expansion tank in the loft has got a lot of sludge type substance in it why is this? And also should the water in the tank be hot?
  18. A

    Pump over and expansion pipe location.

    Hi again, second post, different issue but same house as my first post about wiring. I have added extension to house and now have 2 pumps each supplying 2 single valves for CH and HW. Boiler is Worchester CDi conventional with a header tank and supply and expansion pipes. Since house is single...
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