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  1. N

    Can a conventional system boiler be a closed system?

    As per the title? I've only ever seen domestic system/conventional system boilers with an F&E tank and combi boilers which are closed systems. Is there any reason a system boiler cant have an expansion vessel fitted and be made a closed system? Or Is there any reason you couldn't install a...
  2. C

    Do I have to bleed air out of the water in the boiler?

    Hi.Drained the system today after running for a week or so with radiator flush in. Turned water supply back on but,stupidly only bled upstairs radiators...Now system is not getting warm and boiler only kicks in for short stints. Bled complete system and opened valve by the 3 way / pump.lots of...
  3. J

    Conventional system hot water pump issue

    I have a conventional system and my boiler has Surrey flange. The expansion pipe feeds upstairs bathroom also, but I would like to pump the hot water for upstairs similar to the diagram. Do I have to run a separate feed to upstairs supply?
  4. plumb_know

    Rayburn - putting heating onto conventional boiler??

    Hi Everyone, forgive my ignorance as not come across Rayburn installation before, i have a customer who wants to have conventional gas boiler installed off gas mains to do the heating & hot water. Would this require the rayburn being replaced or could it still be used just for cooking & what...
  5. M

    replacing conventional with combi

    Hello, I’ll try and keep this brief. I have a very ancient one bed flat with a conventional boiler system and since moving in last year have had constant problems with the heating/hot water. The taps that aren't linked to the mains cold water don’t recognise demand unless I specifically turn the...
  6. M

    Worcester Bosch Greenstar (conventional) Not Firing

    Evening Guys, No heating or water from our Worcester Bosch Greenstar 30cdi conventional boiler. When starting up the boiler the pilot light comes on for around 30/40 seconds. There is then sharp gurgling noises and the ignition from the pilot light goes out. I did a quick video here which I...
  7. D

    Conventional boiler - Water is not hot enough

    I moved in a house with a Vaillant Thermocompact 620e boiler with an insulated hot water cylinder. The heating works OK but the water for the bath and taps doesn't get hot enough. I have the hot water "wheel" turned to the maximum and i get water at 35C after having the boiler on for 4 hours...
  8. P

    Opinion on digital showers needed

    I'm considering installation of a digital shower. I wondering if it would be an expensive mistake in the future and would it be best to stick to a conventional shower.
  9. plumb_know

    System boiler

    was wondering if it is possible for someone to explain the difference between a system boiler and conventional, i have looked on internet but the explanations of both are the same? i would like to know the key differences and why you might install one type over the other?? sorry if question is a...
  10. D

    cp 12

    you have three flue categorys, flueless.open-flued, room sealed....so on a cp 12 what is c f refering too.
  11. M

    Boiler making a firing up noise then off again..on again... off again..

    Hi there, if anyone can help me I would be extremely grateful. My boiler is doing a strange thing, it is sounding like it is firing up, and then it goes off again, on again, consistently. Have no idea what to do, if anyone can advise me that would be wonderful. Thanks
  12. W

    Cool rads

    Hello , I have a Potterton profile conventional boiler . If I put the boiler stat above 4 it trips out . The rads are not getting very warm . What should I do ? any ideas ? Thanks Wooly
  13. I

    Conventional boiler overflow issue.

    Good Morning all, could someone shed some light into why I get the following issue. I have a 8 year old conventional boiler, there are 2 tanks in the loft which I'd assume are the cold water storage and the feed and expansion tank (whatever that does). Every month one of these tanks spurts...
  14. M

    Can you use a combi as a conventional boiler?

    Hello all. Im new to the forum and what im wondering is. Can you use a combi boiler as a conventional boiler?
  15. S

    powerflushing unit

    is a Silver Power Flush 200 unit any good for domestic heating systems? looking for a good power flusher take a look Silver Power Flush 200 Package
  16. D

    ground breaker boxes

    what is the advantage to use a ground breaker box as opposed to a conventional stop tap below ground, apart from it may be easier to turn the water on and off and may eliminate the need for another stop tap
  17. L

    which type of valve - thermostatic or standard via room thermostat

    can anyone help me decide how to choose between regular/ manual rad valves or thermostatic, if I want to be able to control the temperature in different parts of the house without the boiler being forced to go on pumping all the time? Or can I have a mixture of the two?:confused:
  18. W

    Bahco Ergo Pipe Bender - anyone use it?

    Been looking at this pipe bender. Conventional pipe benders have always struck me as being fiddly and poorly designed, but I'm not so sure about parting with £75 for one that only does 15mm.