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cylinder

  1. N

    Draining an unvented cylinder

    Hi, According to the regs, can I (homeowner/DIY-er) drain and refill an unvented cylinder myself, or does that require a plumber with G3 cert? Cheers
  2. Z

    Thoughts on Prostel unvented cylinder horizontal

    Just looking at getting an unvented cylinder. Screwfix do an RM cylinder called Prostel. Anybody had experience with these. £830 for 250l horizontal.
  3. S

    Pressurizing a vented cylinder

    Hi guys, I have a question regarding converting an open vent system (copper cylinder) to pressurized, reason being not enough drop from the loft to power a shower, while i know the common advice is to buy a special unvented cylinder I can see no reason why an unvented copper cylinder cannot be...
  4. A

    Gledhill envirofoam stainless cylinder 140ltrs new

    I bought this over a year ago as was advised by a family member who is a plumber to swap cylinders instead of a new combi boiler. Turns out we needed a new combi boiler. I’ve had it too long to take back to the merchants. Would anyone be interested in it. I live in York. It was £225 I think but...
  5. ridgerunner

    Will switch to unvented HW cylinder reduce shower performance

    Hi, am getting our bathroom updated and local company suggested ditching our traditional attic CW tank/vented cylinder and pump for the shower and install an unvented pressurised HW cylinder instead. We have been told that this will not lead to a drop in effective pressure from the shower. Is...
  6. R

    Will shower pressure be less if switch to an unvented HW cylinder?

    Hi, am getting our bathroom updated and local company suggested ditching our traditional attic CW tank/vented cylinder and pump for the shower and install an unvented pressurised HW cylinder instead. We have been told that this will not lead to a drop in effective pressure from the shower. Is...
  7. A

    Vibrating hot water return pipe from indirect cylinder

    Hi, I have two indirect water cylinders (Gledhill) connected to a gas boiler (Vaillant). The system is setup/programmed so that the tanks heat up twice a day for about 2 hours. When the tanks start to heat, one of them makes a loud vibrating noise, sometimes for about 15-20 mins, sometimes for...
  8. dave100

    New unvented cylinder / Replace old vented cylinder and add a ST pump?

    Hello, I am renovating a small bathroom in an apartment on the 5th floor. Heating is electric, no gas or oil. I have four (related) questions about this below. I had intended to reuse the cold water tank and the cylinder sitting underneath it but my plumber suggested I replace the cylinder as...
  9. Z

    Unvented cylinder in loft pump on landing, any problems

    So after having engineer drawings back I'm limited to around 90cm of loft height. I was thinking of a preplumbed horizontal cylinder. But now wondering if a pump and zone valves on the landing in a separate cupboard with just the cylinder flow return going to the loft. Is this an ok idea of...
  10. A

    Can unvented cylinder discharge be connected to this overflow?

    Hi, I'm looking to install an unvented cylinder in my property. I initially hired a plumber who expressed interest in the job, but later cancelled, citing "building regulations" as the reason, specifically regarding the discharge pipe and its location. Subsequently, I reached out to my second...
    • aleant
    • Thread
    • cylinder overflow unvented unvented cylinder
    • Replies: 4
    • Forum: UK Plumbers Forums
  11. M

    Unvented cylinder install query??

    Hi guys. Is there any reason you can’t can’t downsize the hot water draw off from 22mm to 15mm straight away? Other than the flow rate being affected would there be any other concerns? Cheers
  12. Z

    Preplumbed horizontal unvented cylinder

    Anyone know of preplumbed horizontal unvented cylinder apart from the Telford Tempest. My plumber has said they save a lot of time but he's fitted gledhill vertical before I think.
  13. cotswoldmark

    Leaking Water cylinder, behind anti corrosion system

    Hi - I have a plumber booked in to look at this, but I would also like to understand myself what is causing the issue we have. We have a slow drip of water coming from behind the anticorrosion unit on our Ariston unvented water cylinder. The pink "nozzle" behind the Protech unit appears to be...
  14. Z

    Unvented cylinder with heat only boiler??

    I'd like to install an unvented cylinder in the loft. With limited headroom it would have to be horizontal. I want to keep my existing valiant condensing boiler. I currently have a vented set up. A couple of plumbers said this could work. Will the feed and expansion tank for the central...
  15. H

    Hot water cylinder only heating top half of tank

    Hiya, we had a new pressurised hot water cylinder fitted a few weeks ago even though its double the size of our last one we are finding we aren't getting any more hot water. So once the tank is full and the immersion has turned off and i touch the tank only the top half feels warm and the bottom...
  16. chloeradhsaw

    Baffled By Cylinder Hot Water Draw Whilst Cold Water On

    I had my indirect hot water cylinder removed a few days ago and the central heating boiler and pump is turned off at the fuse spur right next to the boiler. I have been without hot water for a few days which is fine - The plumber left the flow / return to the cylinder uncapped as well as the...
  17. chloeradhsaw

    Cutting Barrel Steel Pipework For new cylinder

    I have a hot water cylinder which has low carbon steel pipework to it - I have tried to add some pictures I need to replace the cylinder because it is leaking and I am not able to find anyone who is comfortable to work on this this because it is barrel steel - Has anyone worked on this kind of...
  18. M

    txn150pterp kingspan cylinder internal air bubble

    Has anyone worked to the txn150pterp kingspan unvented cylinders? They have an internal expansion bubble like the megaflows I believe. To repressurise the internal expansion bubble am I correct in saying turn the power off to the immersion/heating turn water off. Then open lowest tap to drain...
  19. R

    Can you have mains pressure cylinder on a back bolier?

    I have been told that I can't have a mains pressure unvented hot water cylinder with a back boiler on a wood burning stove as the heat source is uncontrollable. Is there a method to make the heat source controllable? I was imagining that if the cylinder was at its maximum temperature then if...
  20. Eddiez

    Cylinder return valve?

    Ever since the cylinder return balancing valve has been messed with by my kids it hasn't been hot like before what can I do? (as previously I've been told to leave it fully open )

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