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unvented cylinder

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  1. N

    Unvented cylinder pressure issues

    Hi, I am having issues with an unvented water cylinder and just wanted to double check something. About a week ago I noticed that when the system was turned on there was a dripping coming from the prv and pressure rose to around 4.5 bar. As soon as a toilet was flushed or tap was run the...
    • Newbie234
    • Thread
    • america cylinder issues pressure unvented unvented cylinder usa
    • Replies: 3
    • Forum: USA
  2. J

    Installed Unvented cylinder will cause water pressure high?

    Dear all, I recently got a gas engineer installed a new boiler and an unvented cylinder & expansion vessel in my house, replaced the old boiler, vented cylinder and water tanks in loft. Just after a month of installation, last week, the house lost hot water, it was because the cylinder...
    • Jurgenjay
    • Thread
    • america cause cylinder high installed pressure unvented unvented cylinder usa water water pressure
    • Replies: 16
    • Forum: USA
  3. M

    Unvented cylinder problems - over pressure or faulty expansion tank?

    Hi, New to this forum and also complete novice who knows pretty much nothing about plumbing. However I have done quite some google searching trying to find some answers. I live in a 1st floor flat which uses an electric duel element direct unvented water heater cylinder (150 litres). Recently I...
    • MrJack2021
    • Thread
    • america cylinder expansion faulty pressure problems tank unvented unvented cylinder usa
    • Replies: 5
    • Forum: USA
  4. N

    Unvented indirect with low pressure mains

    Hi, I live in a 9yr old 3 story townhouse with showers on the 1st and 2nd floor, a bath on the 1st and toilets and basins on all three floors. I've never been very happy with my shower and tap water pressures but have only recently investigated the issue. The house has an unvented indirect...
    • nicolewells
    • Thread
    • america indirect low pressure mains mains water pressure pressure unvented unvented cylinder usa
    • Replies: 2
    • Forum: USA
  5. D

    How long should I be heating my unvented cylinder

    Hi All, I have a tempest 360litre cylinder with a Ecotec 637 (37kw) all tucked away in the loft. I currently heat it for an 1.30 at 7 a.m. in the morning and then for 3 hours at 6pm till 9pm I actually wasn't sure this is the best way to heat it as I've read you should leave it for 6 hours...
    • dwaindigital
    • Thread
    • america central heating system cylinder heating should unvented unvented cylinder usa
    • Replies: 5
    • Forum: USA
  6. S

    Direct unvented cylinder

    Hi having trouble finding a local plumber to fit a direct unvented cylinder. Advertised on 3 board's but with no response. I have posted a budget of £1000 is this too low? This is for hot water only not heating. Kevin
    • Spence1412
    • Thread
    • america cylinder direct unvented unvented cylinder usa
    • Replies: 5
    • Forum: USA
  7. M

    Yellow water from new unvented cylinder

    Has anyone experienced this before. Converted gravity hot water to new unvented cylinder (150l indirect evocyl) filled the cylinder up and had yellow water for about half an hour before it started to clear. Any ideas from anyone. I’m G3 registered. Was converted due to suspected split coil in...
  8. I

    Unvented cylinder installation

    Hi All, We want to replace vented with unvented cylinder but cannot find any decent plumber in North West London to carry out the works. Every plumber I have called doesn't even bother to check water pressure or even flow rates. Not even British gas. Not sure what to do now. Currently have...
    • ImranF
    • Thread
    • america cylinder installation unvented unvented cylinder usa
    • Replies: 5
    • Forum: USA
  9. J

    Unvented cylinder waste

    Hi, 1st fixing a house. Im looking at the blow valve for an unvented cylinder There's no external wall near the hotpress so I'm gonna run a waste pipe under the floor. It'll have a tundish so they can see if it's discharging. What I'm wondering is if I can then tee that waste in with the pipe...
    • Jamesplumber92
    • Thread
    • america cylinder unvented unvented cylinder usa waste
    • Replies: 13
    • Forum: USA
  10. Macaque321

    Unvented cylinder in cellar with drain hatch

    I've just bought a Victorian house that needs renovation. Currently there is a boiler and hot water tank in the cellar, and tanks in the loft. I'd like to have an unvented cylinder installed in the cellar, but the plumber I got in said that it needs to have access to an open drain. There is a...
    • Macaque321
    • Thread
    • america cylinder drain hatch unvented unvented cylinder usa
    • Replies: 4
    • Forum: USA
  11. A

    Gledhill Unvented Cylinder Loud Bang Hot Water Demand

    Recently had a new heating and hot water system retrofitted in a domestic property. Previous hot water system was gravity fed with a vented cylinder. New system as shown in the photos. Installer commissioned system about 3 months ago and all was working fine. There have since been two faults...
    • Adam-Robinson
    • Thread
    • america cylinder demand gledhill hot hot water unvented unvented cylinder usa water
    • Replies: 24
    • Forum: USA
  12. Stants

    Pipework type / design for Unvented Cylinder ( 170 L Megaflo Eco )

    Hi I'm tying / hoping to run a drain for an Unvented indirect cylinder I need to run it now as I want to close in the building ( its in a loft conversion ) I'm having great difficulty getting someone to fit the whole system for me , it was being done by a guy but now he can not do it as...
  13. S

    Unvented cylinder discharge into 1980s Marley plastic rainwater hopper and pipe?

    I live in a shared building with a flat above me. My upstairs neighbour has just fitted an unvented hot water cylinder. The plumber has run the 22mm copper discharge pipe into the old plastic Marley hopper and downpipe, which discharges straight into the sewer. This downpipe also carries...
  14. M

    Unvented cylinder constantly sounds ‘on’

    Hi, I have an unvented cylinder and lately even without the boiler central heating or hot water ‘on’, the system sounds like it’s constantly ‘on’. All through the night, it used to be silent except when running, but now it can sound like it’s ‘on’ constantly for days at a time. Surely this...
  15. J

    3-tee rule on unvented cylinder

    Hi all, Just getting my head in a twist regarding the 3-tee rule (last tee on the return pipe should be hot water). I have a customer with an unvented installation, with two 2-port valves for CH and HW. He's built an extension, and wants to add a new circuit of radiators to the system. The new...
    • Jennie
    • Thread
    • america cylinder unvented unvented cylinder usa
    • Replies: 4
    • Forum: USA
  16. C

    Unvented cylinder certificate

    Hi guys I've done my G3 in December as I needed to fit an unvented cylinder in a restaurant. I said to the client to notify BC about the installation. The restaurant is new so BC came around a couple of times for inspection. I said to the owner that they will have to give him the certificate...
    • CP Plumbing
    • Thread
    • america certificate cylinder hot water instalation unvented unvented cylinder usa
    • Replies: 15
    • Forum: USA
  17. B

    Vented or Unvented Cylinder

    Hello Would you recommend a vented or unvented cylinder? I have an indirect vented system at the moment. The flow rate from the upstairs taps is low. We are having solar thermal installed and thus the cylinder will be changed. We can have a new vented or unvented cylinder installed. What...
    • blueplanet
    • Thread
    • america cylinder unvented unvented cylinder usa vented
    • Replies: 2
    • Forum: USA
  18. C

    Boiler wattage for use with unvented cylinder

    Hi The gas boiler is getting old and so at some point will need to be replaced and I am trying to calculate what size it needs to be for best efficiency. The system is zoned with Zone 1 being 15KW of radiators, Zone 2 being 10KW of radiators, Zone 3 being a Centerstore Solar 300L unvented hot...
  19. P

    Unvented cylinder inspection

    Hi Lads/lasses just wanted some advice on unvented cylinder inspection. I just took on what seems to be a contract for a block of flats all with direct heating via immersion. The way they have been installed seems a bit off as there is no check valve on the supply to the cylinder. It goes, Stop...
    • Plumb Tidy
    • Thread
    • america cylinder inspection unvented unvented cylinder usa
    • Replies: 20
    • Forum: USA
  20. S

    Accumulator or not?

    HI all ive got a unvented system in the loft at home. We had the water feed replaced and at the stopcock, we get about 2 bar, and 24l/min Showers get about 10L/min and taps around 12l/min - both around 1.5bar. The house seems to have 22mm from the stopcock to the boiler and around the house...
    • stevedurban
    • Thread
    • accumulator acumulator america flow pressure unvented cylinder usa
    • Replies: 2
    • Forum: USA
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