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

unvented cylinder

  1. finchy01

    Unvented cylinder D2 pipework

    Morning all. I'm quoting for a conversion from vented to unvented (I'm g3) a d the customer has said that she has been told that the d2 can go into normal waste pipe with a special connection. I was under the Impression that D2 pipe should be of copper material to the outside of the property...
  2. leelister6

    Unvented cylinder in cellar

    Hi all. Just been to look at a job and customer wants the boiler relocating to the cellar. He wants an unvented cylinder (I'm G3) also in the cellar, the only problem would be D2. Obviously can't discharge uphill so what are the alternatives? Property has 1 bath, 2 mixer showers, 3 basins and...
  3. pmplum

    OSO unvented cylinder

    Hi I have customer with a 330 litre OSO Invented cylinder with water coming from the cold water expansion valve. My question is these cylinders have an internal expansion “bubble” , can they fail ? Tried draining it and refilling to recharge the bubble Checked hot ware temp and it’s at 60...
  4. C

    Indirect Unvented cylinder, Combi Boiler and Nest Thermostat

    We have just had an indirect unvented cylinder (250l Vertical Telford Tempest) installed along with a nest v3 thermostat. The plumber was able to modify our existing combi boiler, so it runs like a system boiler. I am trying to understand how it works as currently the plumber has set it to come...
    • Chris1012
    • Thread
    • boiler combi combi boiler cylinder thermostat unvented unvented cylinder
    • Replies: 84
    • Forum: Boiler Advice Forum
  5. plumb_know

    UNVENTED CYLINDER & LOG BURNER

    Hi Everyone, had a customer enquire about installing twin coil unvented cylinder with log burner supplying one coil to make use of heat from burner. I have seen some threads where people say this can be done but would have to be indirectly supplied from thermal store with open vented heating...
  6. S

    Gas Boiler v Electric with unvented cylinder

    More out of curiosity and to gain knowledge on the matter, what is the general energy consumption and pros and cons between a standard combi boiler say an ideal logic, and a 4kw potterton gold electric boiler feeding an unvented cylinder at about 100l or so? Any general thoughts on electric...
  7. 6

    DROP IN SHOWER FLOW/PRESSURE from Indirect Unvented Cylinder

    Hi We had installed Indirect Unvented Cylinder(300L CentreStore) 3 years ago,as we had poor shower head pressure/flow with our Combi Boiler. Lately we feel the shower flow or pressure has reduced.Previously we could run two or more showers/tap at same time,but nowadays once we have a tap open...
  8. A

    Unvented Cylinder - Tundish Leak

    Would anyone be able to advise the likely cause of the tundish overflowing on my unvented cylinder please?
  9. G

    Direct unvented cylinder 210 l

    Ehc direct unvented cylinder 210L capacity, brand new and never fitted, comes with pressure reducing valve and expansion vessel.
  10. L

    Combination valve unvented cylinder

    Hi I know that on the instructions of the combination valve that the mains water goes into the bottom of the valve then the outlet to the left or right depending which way your looking at it goes to the balanced cold then it goes up to the cylinder feed. Does it matter which outlet the cylinder...
  11. P

    Unvented cylinder and boiler cycling

    I recently had an unvented cylinder installed and it is causing the boiler to cycle every 3 mins due to the return from the coil leaving the cylinder being so hot. This in turn means I get no heating as the boiler doesn't stay on long enough. I am sure the cylinder stat is function correctly...
  12. S

    Combi hot water and unvented cylinder output connected

    INSTALLATION: Large house occupied only by a retired couple most of the time. Has three bathrooms, one bathroom in regular use, the others only used when visitors come. New boiler being installed, 35Kw combi. Cold mains pressure between 3 and 4 bar, with flow rate of 20 lpm through 32mm...
    • steadyon
    • Thread
    • combi cylinder hot water unvented unvented cylinder water
    • Replies: 9
    • Forum: Bathroom Advice
  13. E

    unvented cylinder but low pressure at outlets in loft?

    Hi all, Hoping someone can help. I've not yet had a plumber out to check, thought I would get some opinions first if possible. What I perceive to be a problem may not be in reality. I have an unvented mains pressure cylinder in the basement set to 2 bar on the PRV from the mains which is...
  14. J

    Direct unvented cylinder

    If I install a direct unvented cylinder, can I just use the top immersion heater to heat the water I need? I have very limited need for hot water: only two mixer taps. I have no bath, just an electric shower, and the dishwasher is cold water fed. I do have gas central heating so can install an...
  15. J

    Unvented cylinder - direct or indirect

    I have differing hot and cold water pressure with my current vented water system so the new mixer tap in the bathroom won't work properly. My plumber advises I convert to an unvented cylinder set up. He also recommends I use a direct cylinder even though I've got gas central heating system. This...
  16. SavageW

    Unvented cylinder question

    Replacing a leaking unvented,customer had two Ariston unventeds working in tandem eg one cold main split to two pressure reducing valves,shared dhw draw off & balanced cold,secondary returns,flow an return shared but only one Honeywell 2 port that then split to each primary flow of the cylinders...
  17. G

    Replacement of indirect vented cylinder with indirect unvented cylinder

    Following completion of plumbing work today I would appreciate any advice on the following two issues : Q1 I have had a 150litre horizontal indirect cylinder (Telford Brand) installed today on an unvented system. After the plumber left I saw the installation instructions which state – “ The...
  18. M

    Replace my combi with system + unvented cylinder?

    Hi all I will soon be having a loft conversion, turning my small(ish) three bed one bath house into a four bedroom, two bathroom house. I am also doing a small extension and putting underfloor heating in that. I am really confused about what I should be doing with my hot water / heating...
  19. GQuigley67

    Unvented cylinder reduced flow rate

    When you first open a tap pressure and flow rate is good, it then dies down like a combi would reducing from approx 20 l/min to about 10 l/m. Balanced cold doesn't have this issue, expansion vessel replaced due to being burst, couldn't clean filter in combination valve so temporary bypassed it...
  20. B

    Unvented cylinder flow rate requirements?

    Hi guys. Just a quick question. I've been asked to fit a Worcester Greenstore unvented cylinder but I'm worried flow rate is insufficient. I measured the flow rate at 14 L/PM. It currently comes into the house in 20mm mdpe and goes straight to 15 mm after the stopcock to supply the house. I...

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

Featured Content

Back
Top