Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

unvented

  1. B

    Anyone used Ferroli 50l unvented, any good?

    I’m talking about the wall mounted water in/out at the bottom, small unvented cylinders. I have used Hyco 50l powerflow unvented, they come with all the controls for just under 400. Anyone have experience of Ferroli SEV 50 l unvented as they seem quite a lot cheaper, 240.
  2. D

    Megaflo Unvented Air Gap Recharge Water Doesn't Stop

    I have a megaflo unvented cylinder on the first floor of my property and I am trying to recharge the air gap. I have turned off the incoming cold mains valve upstream (and right next to) the pressure regulating valve and then opened the hot water taps at the lowest point in the house. The...
  3. 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
  4. S

    Joule Unvented 300lt Cyclone, 2 Heatrod Immersions with Cotherm TSE T115s, and a Codice 542791

    Heno here. From Ireland. I'm a marine sparks but that doesn't qualify in any way to deal with electric and water. Pleasure to meet you all. I know the title of my 1st post might be moderated but I couldn't shorten it. I've a Joule 300lt Cyclone tank. It has 2 Heatrod immersions with a Cotherm...
  5. B

    unvented hot water cylinder in a roof space of a two storey house

    unvented hot water cylinder in a roof space of a two storey house in an existing property what is best option for discharge pipe to terminate.It will be 22mm copper but didn't want to run it all the way down the back of the house to ground level if possible.
  6. H

    Changing bath mixer tap on Unvented System?

    Good Evening all, hope everyone is well. Im not long out of my time so go gentle please lol. I have the job of replacing bath mixer tap (no isolation valves fitted under bath). It has an unvented cylinder installed. Is it just a case of isolating mains water, opening taps to drain water out of...
  7. J

    Retro-fitting balanced cold on an unvented - query

    Hi all, fairly new to G3 work as recently certified (!). Done a couple of installs from scratch, all good. Job here is to retro-fit a balanced cold circuit from a Gledhill unvented to a recently refurbed bathroom that now has all mixers (apart obviously the toilet). Cylinder has Reliance...
  8. 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...
  9. J

    Problems running multiple outlets with unvented system in new build

    Got a brand new 25mm hdpe incoming main with pressure of 2/2.5 bar. Need to check flow rate but doesn’t look great at kitchen sink. The main connects to stopcock and is run in 28mm directly to cylinder which is located on 2nd floor of a town house. Hot and colds are run out in 22mm. It serves a...
  10. D

    Unvented system and expansion tank pressurisation

    I've recently had a prv changed by a British Gas engineer under the homecare contract that I've taken out. The valve had failed and water was pouring out from the overflow pipe. The valve was replaced without too much issue. However, the red expansion tank above the boiler was NOT re-pressurised...
  11. 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...
  12. 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...
  13. 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...
  14. R

    Ariston STI 150, unvented indirect cylinder.

    My house (old) has a heating system installed with a Protech Anti corrosion system, I don't know how old the cylinder is, which is showing signs of rust from around the Protech box! I can see the outside skin of the cylinder is thin mild steel, but thought the core was stainless steel? Is such...
  15. T

    replace thermostatic mixer shower valve (mains pressure unvented system boiler system)

    With a thermostatic mixer showers, can you replace the unit, in a mains pressure unvented system boiler configuration, by just turning the cold mains off at the stopcock when the water supply enters the property? Will the hot and cold water stop flowing if you turn the mains water off?
    • Topslice
    • Thread
    • boiler mains mixer pressure replace shower system thermostatic unvented valve
    • Replies: 2
    • Forum: Boiler Advice Forum
  16. 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...
  17. J

    Santon PremierPlus unvented boiler - super high bills

    Disclaimer: I know very little about boilers so sorry if my assumptions are way off! From testing by logging energy usage, and that if I turn the boiler on the meter lights up like a Christmas tree, it seems our Santon PremierPlus boiler (PP170E) is constantly running causing extreme energy...
  18. J

    Advice on hybrid configuration - vented heating with unvented hot water

    Hello everyone, Please can I have your advice on this hybrid configuration that involves vented heating & unvented hot water ? I currently have a regular boiler (Worcester Greenstar 24 RI) running in a vented system, with cold water storage tank in the loft and also an heating F&E tank in the...
  19. 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...
  20. 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...

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.

Featured Content

Back
Top