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unvented

  1. V

    G3 Plumber wanted for Direct Unvented like for likish replacement in Manchester

    Looking a reasonably priced plumber to replace unvented hot water like for like in second floor flat. Please message for details or to quote please.
  2. M

    WANTED - Plumber in the Greater Manchester/Rochdale area - Combi to Unvented System conversion

    Hi all, Hope you are well. Looking for someone to convert a combi system to an unvented system. Also, at the same time renew the cold feed from a 15mm to 22mm to the tank, install 1 new radiator, and replace 5 existing radiators. The new boiler will replace the existing boiler in a reception...
  3. R

    Can an unvented indirect cylinder be used just on electric?

    I'm looking at getting an unvented cylinder fitted as i'm redoing the bathroom, at the moment its a direct system, but next year I'm looking to swap to an airsource heat pump. Can a high efficiency indurect cylinder be used as a direct one i.e add 2 elements,. Just so i can th en plumb in the...
  4. R

    Unvented direct cylinders, whats the best?

    Looking at getting an unvented cylinder fitted, looking for any feed back on the diffrent brands, good bad etc. Thanks
  5. S

    Plastic pipes to/from unvented cylinder.

    Good afternoon, We are looking to buy a property but having looked in the loft I noticed that push fit has been used on most of the connections on the unvented cylinder. Mixed views so far on whether this is OK so looking for some advice on whether I need this inspected further before we...
  6. M

    How to isolate hot water from unvented cylinder to change tap

    Hello all, To start off I'm not g3 qualified. I have been reading around about unvented cylinders imploding in some situations when cold water to them is isolated and hot water tap is opened, often in an attempt to reduce the pressure in the system to carry out some repair on a hot water...
  7. T

    Unvented Hot water tickets

    Hi everyone I have my Unvented Hot Water course at the end of month just wondering if anyone on here has done the course and what I can expect on the day? Many thanks Tom
  8. T

    Unvented cylinder discharge pipe location

    I posted a year or so back about the total messed up install I had of an unvented system. I can finally get this resolved. I’m having the cylinder moved from the loft into the airing cupboard. At present the discharge pipe runs down the outside side of the house from the loft. Due to the move...
  9. J

    Changing unvented cylinder immersion element

    Hi all, I"ve got my G3 unvented. Customer wants an immersion element changing. Access is limited - once I get into the cupboard, and I do my electrical tests it hopefully might just be the stat that needs swapping. However, if it is the element... words of advice and tips would be...
  10. M

    System boiler fit to unvented cylinder

    My friends dad had a system boiler installed in replacment of an old floor standing boiler. The unvented cylinder is right next to the boiler. The firm has fitted the system boiler. But ignored the fact the pressure relief is dripping on the cylinder. As the expansion vessel has lost its charge...
  11. H

    Isolate hot water in unvented pressurised system

    Hi, I need to turn off hot water in bathroom. There are no isolation valves from unvented indirect pressurised tank in loft. Turning off mains to house stops hot and cold water upstairs, but the hot in kitchen still continues to run (but at reduced pressure). But when I turn mains back on...
  12. I

    Combi or unvented System?

    Hi I am new to the forum and looking for advice. I want to replace a very old boiler that has not worked for years and have been relying on electricity for all our heating requirements. My wife and I live in a two bedroom, one bathroom bungalow. All the rooms are fairly large. I was looking...
  13. Stants

    Unvented Water pressure and flow question

    Hi I'm having a new System ( Unvented 210 Evocyl cylinder and Worcester bosch boiler greenstar ) I've got one bathroom, bath ,sink and toilet and a shower and toilet , sink in another I think that's deemed as 1 and a 1/2 bathrooms ive done a flow and pressure test ( details on an earlier post...
  14. S

    Occasional Drip Through Tundish From Unvented Telford Tornado

    I‘ve noticed that very occasionally I get a slow drip through the tundish and out through the overflow, only when the hot water is running. It drips about once every 10 mins or so and the water feels cold. It doesn’t drip every time the hot water is running but as I said above occasionally...
  15. O

    Unvented hot water noise

    Hello All I am gas safe and G3 registered since 3 years. So still very new to this industry and I have tons to learn. I specialise in service and maintenance, unvented hot water installations are very popular here in Wiltshire. We have water pressure 3,5-4 or more bar mains pressure over here...
  16. S

    Does anyone know this brand of Unvented Cylinder?

    Two different brands of Unvented Cylinder have been recommended to me. I have never heard of either of them, nor can I find reviews of them. Does anyone know them? Thanks for your advice. They both appear to have innovative internal expansion vessels, like the Mega-Flo's. Evocyl Air Standard...
  17. S

    What make of Direct Unvented Cylinder, and what size?

    Hi, some professional advice would be greatly appreciated, We are having an Unvented Cylinder installed into our 2 bedroom ground floor flat. I have had a few quotes and been given lots of differing advice, this always makes me wary, especially having suffered a history of poor quality work by...
  18. plumb_know

    solar panels with unvented cylinders

    Hi everyone, I am qualified to work on unvented cylinders but have no experience with solar panels. I have a customer which has a leaking unvented cylinder with solar coil attached. am i legally allowed to replace the cylinder,is their regulations with solar? if so, is it easy to drain the...
  19. P

    Pricing to replace a vented cylinder with an unvented cylinder (megaflo)

    Hello , ive recently gone out on my own, i have been working in the industry 15years now /g3 qualified and i would just like to get some advice from the knowledgable people on this forum! i have done a lot of installing but haven't really got involved with the design as somebody else has done...
  20. B

    My Thermalstore - is it Vented / Unvented?

    Hello folks. My thermalstore heating (hot water and UFH) system was installed almost 20yrs ago. It has consistently caused confusion for engineers who often seem to confuse it with a megaflow type install. The main body of water in the tank in in a closed loop to the Potterton boiler. The...

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