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expansion

  1. F

    Open vented system,advised to cap off expansion pipe??

    Hi, im a GSR engineer but not from a plumbing background. I have a customer with an open vented system that is having to bleed radiators downstairs and upstairs every few weeks. I asked a plumber about this and he said it was either 1. A leak allowing air into system 2. The expansion pipe rises...
  2. W

    H/w expansion vessel

    I need advice but I'm not a plumber, I'm a joiner.We have a house in Portugal and last year had c/h installedwith new 200litre h/w cylinder. The h/w system is non vented and the cylinder is also heated by a solar panel. A month ago the 7 bar pressure relief valve started to leak when the guage...
  3. M

    Legionella risk of expansion pipe to water tank

    Hi, been asked to do a job which seems a little strange. Large office building in London, expansion pipe to roof mounted cold water taken has broken off leaving a hole in the tank, this was noticed when the annual legionella risk carried was out and they have said that the hole needs to be...
    • MOSSEP
    • Thread
    • expansion pipe tank water water tank
    • Replies: 15
    • Forum: Central Heating Forum
  4. A

    Combi Boiler Expansion Vessel Replacement Needed (Halifax area)

    Hi, I am new to the forum and I am hoping members can help. The internal expansion vessel has gone on the combi, I need a 12L external vessel fitting. Job should be simple boiler is located in garage with very easy access and plenty of locations to fix the new expansion vessel. Located in...
    • adamfax
    • Thread
    • boiler combi combi boiler expansion expansion vessel replacement vessel
    • Replies: 5
    • Forum: Boiler Advice Forum
  5. B

    Mini Expansion Vessel

    First post since intro! Worcester 28cdi in property when we bought. Worcester engineer when servicing says should have a mini expansion vessel in cold supply because a water meter is fitted. Boiler has worked with very few problems over the years so why is mini expansion vessel needed now...
  6. cr0ft

    Expansion Vessels

    Quick one folks. I have a spare potable water expansion vessel kicking around our unit. Rather than skip it, I was wondering if I can use it for a sealed CH circuit? I know you can't do it the other way round but my understanding is potable water expansion vessels are built to a better...
  7. O

    expansion pipe on a open vented system

    Can you please tell me the possible problems caused by the vent pipe dipping into the F&E tank below the waterline.
  8. O

    expansion pipe on vented system

    Can you please tell me the possible problems caused by the vent pipe dipping into the F&E tank below the waterline.
  9. 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...
  10. 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...
  11. 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...
  12. 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
  13. 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...
  14. 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.
  15. 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...
  16. 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
  17. 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
  18. 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...
  19. 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...
  20. 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

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