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  1. Jay The Plumber

    siting an unvented cylinder on sloping floors

    evening folks, im putting an unvented in an old farmhouse in an upstairs room alcove area that will be eventually made into a cupboard. being an old farmhouse, the floor is all over the place, I put a bit of fibreboard down and levelled it but the floor is out in a compound angle and is a real...
  2. M

    Can you solve the mystery of the 70 degree hot water?? (unvented system)

    Hello, We have just had a complete overhaul of our heating and hot water. We previous had a conventional (?) system (two tanks in the loft, copper tank in the airing cupboard) heated by a Worcester Bosch 18ri. Controlled by a 3rd gen Nest. We have changed to an unvented tank (Kingspan) system...
    • Matt Lucas
    • Thread
    • degree hot hot water mystery solve system unvented cylinder water
    • Replies: 19
    • Forum: Plumbing Jobs | The Job-board
  3. P

    Unvented cylinder guarantee.

    Watch out for this one, haven't resolved yet. Put in unvented cylinder for customer who wanted long 25 year guarantee. Cylinder installed as vented as they were willing to pay the extra. 2 years on cylinder develops a leak and customer told by manufactures there is no guarantee as cylinder is...
  4. jaydebruyne

    Unvented cylinder annual service

    what exactly is done in an annual service for an invented cylinder? Other than checking no leaks, immersion elements are ok etc I have my G3 ticket. But don't be fooled, they don't teach you much on the course!!!
  5. J

    Loft Conversion-Boiler/Unvented

    HI all, I am currently in the process of having a loft conversion done, of which I need to upgrade/change the heating and hot water system as the house will be a 5bedroom with 1bathroom and 2 showerooms once complete. I currently have a Worcester Bosch condensor boiler which is 24kw, which has...
  6. Scott_D

    Unvented cylinder maintenance

    Does anyone get involved in maintenance of UV cylinders? Been sent this picture asking if I can have a look as it's leaking Would you bother repairing a it looks to have multiple leaks and generally be in a bad state
  7. J

    Advice needed - Unvented cylinder - Normal or not normal?

    Hello, Having recently bought a new property which has an unvented hot water system installed, I'm just trying to understand what's normal and what's not so normal having had no experience of an unvented system in any of my previous properties. My intrigue/concern really comes from when the...
  8. D

    Hello, new member, question regarding unvented cylinder installation

    Hi I have recently had a unvented cylinder installed. The old water tank has been replaced with this system at a cost of £2500. Does that sound reasonable? Thanks Darren
    • Darren
    • Thread
    • cylinder hello installation member question regarding unvented unvented cylinder
    • Replies: 13
    • Forum: Plumbing Jobs | The Job-board
  9. W

    Low cold+hot flow upstairs, unvented cylinder.

    Turned off mains, opened cold and hot side of kitchen tap, both stopped in about 30 seconds. Worked on toilet and changed some tap washers. Turned back on, all good pressure downstairs, hot and cold very poor upstairs. Told her I'm not unvented so can't advise/deal with. But did I do anything...
  10. T

    Plumbing issue need help a worchester bosch system boiler and a joule 250ltr unvented cylinder

    Guys looking for some advice I have a property that we are working on we have the following gnd flr wc kitchen with dishwasher and one basin water softener 1st flr ensuite shower toilet and basin ensuite 2 shower basin bath and toilet 2nd flr shower basin toilet washing machine We have...
    • Tim78
    • Thread
    • basin boiler bosch combination cylinder help issue oil plumbing shower showers system system boiler unvented unvented cylinder water worchester
    • Replies: 20
    • Forum: Plumbing Jobs | The Job-board
  11. K

    Supply to unvented cylinder

    Hi all, I currently have a 15mm mains supply to a unvented cylinder in the loft as the pipe goes under a tiled floor en suite and it was not upgraded during the installation. I am now in a position to upgrade to 22mm but do I have to use a G3 qualified plumber for renewing the 15mm to 22mm...
  12. D

    Vaillant Combi Boiler Unvented Cylinder - Hot water problem

    Hello, I have a Combi Boiler (Vaillant Ecotec Plus 428) and an Unvented Cylinder (Vaillant uniSTOR VIH GB 180s). Since yesterday we have no more hot water in the house, it comes out cold or luke warm. But the heating works fine. When a hot water tap is fully opened, the boiler reads S.30 (no...
    • David505
    • Thread
    • boiler central heating system combi combi boiler cylinder hot hot water oil problem unvented unvented cylinder vaillant valve water water problem
    • Replies: 13
    • Forum: Plumbing Jobs | The Job-board
  13. B

    Aerocyl plus unvented cylinder

    Hi Guys, just after some advice if someone could help. I have a Aerocyl plus unvented cylinder in my house, Heat pump external (no gas) I have a steady flow of cold water though the pressure relief tundish. Its constant as far as I can tell. Going to call out a plumber tomorrow but in the...
  14. Jay The Plumber

    Santon unvented cylinder nut size?

    about to hook up the flow and return to a santon cylinder that has been fitted for some time and using immersion only, the connections are not with the cylinder anymore, where can I get them?
  15. D

    unvented cylinder

    does anybody know if the unvented cylinder can go in a loft or garage? Any problems with doing so? Also, will my 14 years old boiler work with unvented cylinder or would I need to change the lot? Thanks
  16. E

    push fit fittings on unvented cylinder

    looked at an install today and the pressurised cylinder cupboard ws completed in push fit. The tundish hadnt been conected yet but wht are peoples views on it. i personally only use copper but am told plastic is ok. Eddie
    • eddiebrown424
    • Thread
    • copper cylinder eddie fittings pressure push fit unvented unvented cylinder
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  17. M

    Unvented cylinder problems - Co. Durham

    Ongoing issue thats never been fixed! I am having issues with hot water flowing into the tundish, when the hot water cycle is running, is there anyone that can help?
  18. Z

    Unvented cylinder efficiency

    Just decided on new heating system comprising of Vaillant system boiler and the latest Unistor unvented cylinder. The newer Unistor cylinders are B rated however OSO now do an A rated cylinder and was thinking long term the OSO should be a considered option. Going fully Vaillant I understand the...
  19. D

    Unvented Cylinder Pressure Problems

    good evening folks. hope all is well. i really need some help. a customers Santon PP 300e unvented cylinders heating elements had failed. i drained and replaced said elements. after allowing the system to re-fill and re-heat, i was made aware that the hot water was very hot, but that the hot...
    • dave knight
    • Thread
    • cylinder everything knowledge pressure problems thank unvented unvented cylinder
    • Replies: 13
    • Forum: Plumbing Jobs | The Job-board
  20. B

    unvented cylinder

    i need to spec a unvented cylinder on a job,currently has a duotec 40 he combi that i am going to use as a system boiler,trouble is i have not done unvented installs for ages so need advice sizing up the cylinder i need,needs to cope with 2 bathrooms ,will be using a megaflow
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