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cylinder

  1. king of pipes

    Boiler and cylinder replacement

    Had a look at this job it needs upgrading boiler and cylinder the house is quite big 17 rads, big rooms open vented at present , some pipework under concrete floors client wants unvented and little as possible on show conserned about pipes under the floor so looking for ideas chaps I've a few...
  2. J

    unvented cylinder v combi store

    Hi all, My customer is renovating a house. Complete renovation of the plumbing. It's a three-bed house for a young family of 3. It will have one main bathroom (bath and maybe an over-bath shower), plus two shower ensuites. I have yet to check the incoming water pressures/flow rates to the...
  3. Fogster74

    Working on heating side of system with an unvented cylinder, no G3?

    Hi all, I'm a competent DIYer with an engineering background and am active in Heritage Buildings. I never touch anything I'm not allowed to albeit I've worked on the wet side of my own heating on the central heating circuit before when I had a combi - balancing rads, add a Fernox TF1, washing...
  4. C

    Hot water storage cylinder timer installation

    Hello, I have a few questions about my unvented hot water storage cylinder please: 1. How many kWh is each 3kWh element (day / night) supposed to use over a 7-hour period? I suppose the thermostat prevents them from running constantly? 2. Can a timer be installed on the element that runs at...
  5. T

    New pressurised Cylinder, heat sensor not shutting off, RF3 pack

    Hello Just had a new pressurised cylinder fitted, the old vented one was operated by a Honeywell RF2 (3 pack) and functioned normally. Having the new cylinder fitted the sensor CS92A had to have the touch sensor changed from the flat type to the push in type. The heat is set for 60c, however it...
  6. M

    vibrating cylinder reducing valve 'standard practice'?

    Hello, I have a new unvented system with a horizontal 210L Joule hot water cylinder. The cylinder has been vibrating badly which you can hear throughout the upstairs (it's in the loft). The manufacturers have stated that there is too much flow going into the cylinder, and that the gas...
  7. C

    Horizontal hot water cylinder install. Does this look correct?

    Anyone out there able to help? Is this correct or are there things wrong and if so what?
  8. C

    Humming from unvented cylinder

    Hopefully someone can point me in the right direction. Before I start I am G3 qualified. As per usual I was asked to rectify a leak on a combination valve. I installed a like for like 3.5 bar valve, all good, however I I checked pressure in exp vessel to find no pressure at all (Never been...
  9. A

    Noisy unvented cylinder advice Pls.

    HI everyone, I'm looking for some thought/opinions on what could be causing issues with noise and pressure since having a pressurised un-vented cylinder installed with an Air Source Heat Pump from a traditional gravity fed system. When it was first installed, whenever a hot tap was run there...
  10. S

    Help diagnosing bubbling originating in hot water cylinder

    Hi there, I recently replaced a dead central heating pump in my home, so drained down the system completely, fitted new pump and filled up. What I'm experiencing now is a periodic bubbling noise, it starts in the hot water cylinder on the 1st floor and makes its way to the boiler on the ground...
  11. U

    Unvented Cylinder Discharge pipe not to regs

    Hi, I'm looking for some advice on how to proceed with my current situation. We bought a new build and after getting my boiler and unvented cylinder serviced my plumber raised the fact that he estimates the D2 discharge pipe to have a resistance flow length on 12m and as it's 22mm copper pipe...
  12. J

    Heat exchange rate in cylinder

    Just a fast one for the experts Does say heating water entering coil in hw cylinder heat the dhw faster if say the heating presure is say a bar and a half as oppose to f and e. Also if hw cylinder was unvented would speed up heat transfer aswell?? Thanks in advance if i get a reply
  13. B

    Unvented cylinder won't stop heating up when CH is turned on

    I have recently moved into a house with the following heating system: Traditional boiler (Worcester Greenstar Ri 24 with only one temperature dial and no pressure gauge) Vented central heating (cold tank in loft) Unvented hot water (Excelsior cylinder with pressure gauge plus white expansion...
  14. B

    New thermostatic shower cylinder fitted - now water is not hot enough

    I have a Bristan mixer shower. It started leaking from the temperature control. A local plumber replaced the thermostatic cylinder. It now doesn't leak - but the water is now 15-20 per cent colder than it was before when the temperature is at max hot. Why? What's amiss here?
  15. B

    DHW recirculating loop connection to cylinder

    Can the return pipe in a domestic hot water recirculating loop be connected to the cold feed to a direct HW cylinder
  16. P

    Height differential required between an F&E tank and a cylinder?

    Trying to add a shower into a small bathroom, I'm looking at moving my hot water cylinder to the loft. Currently, I have a vented 200L cylinder (in the bathroom) with the principal source of heat being an Economy 7 setup, which gives adequate hot water for our needs. The cylinder also has an...
  17. J

    Very weird set up - is it a primatic cylinder?

    I can't get a consensus on this from four plumbers that have visited. We've been using the system with no prpblems for 7 years - but the cylinder leaks and needs replacing. It's an old and peculiar set up I have onherited after buting my two storey house. I would greatly appreciate any...
  18. AndyCoo

    Central mixing valve near unvented cylinder

    Hi all I have a mixing valve question. Should I have one fitted close to my new unvented cylinder?
  19. J

    ARISTON CLASSICO UNVENTED INDIRECT CYLINDER ST1 210

    Hi All, looking for some advice. I have ARISTON CLASSICO UNVENTED INDIRECT CYLINDER ST1 210 which has corroded at one of the main inlets and is leaking water when in operation. This unit is now obsolete and need to source a replacement. Obviously I am aware that I cannot replace the unit myself...
  20. P

    Unvented cylinder wiring

    Hello all I'm replacing 2 unvented cylinder a which are (a) end of life and (b) installed in a way which is clearly not right (no 2 port shut off valve on the heating coils just for a start, and there are other issues). The heating coils are currently controlled with 3 port valves that are...

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