heat only

  1. T

    Condensation inside Heat only boiler casing - a couple of questions.

    Hi all, I've got a British Gas 330+ Heat only boiler and it displayed an F25 error (lack of water iirc) on Sunday. I read the manual and bled the radiators (1 rad had quite a bit of air) and topped the system up a little and sure enough I could then hear water flowing back into the boiler. I...
  2. 5

    LARGE HEAT ONLY BOILERS

    Looking to get a 40kw or 42kw heat only boiler for a largish house. already done heat loss to these values. was going to use and pressurise with external expansion vessel. Vaillant tech suggested they had a boiler to suit but i cannot find it? Anyone know if they do one ( it is for domestic use)...
  3. M

    Electric heat only boiler installation advice for a charity please

    Hello, would appreciate any advice please. I assist a charity which is taking on a building which has stood empty for some years. It will be used for archival storage and office/exhibit area. Existing heating was blown air via a large commercial grade HVAC unit utilising a pressurejet oil...
  4. king of pipes

    Valliant pure 15kw heat only on a s plan

    I will start a heating upgrade on Monday removing a old glowworm boiler and upgrading the system from a y plan to a s plan , new pump , twin channel programmer , room stat , auto bypass , new Trv's and lockshields, am I right in thinking I will need a pump overrun facility for this boiler all...
  5. C

    New Boiler Heat only

    Good afternoon, After a bit of advice, I am looking at replacing my boiler which is an ideal mexico super 3 floor standing which is 33kw. I want to look for rough costs online before calling someone out and wasting there time if I can't afford it 1) would the kw be the same? 2) do any other...
  6. king of pipes

    Baxi 412 heat only

    First full strip down on this fitted 24 months ago now customers bills have come down significantly so all's good , could do with 3 hands on one of these but no dramas in the end .kop
  7. A

    Heat only boiler to combi upgrade

    Hi all, Looking for some advice, moved into a detached house which has 4 bedrooms, 1 bath and an electric shower, 14 rads in total. The current setup which i have no idea how it works, has a heat only boiler which looks quite old and a cylinder in the bedroom cupboard, pics attached I've had...
  8. G

    Which heat only boiler

    Im replacing an old ferolli sigma 40 60 on an open vented system. I ve narrowed the choice down to either Baxi 418 18kw or Ideal Logic +heat 18kw They are similarly priced and featured but i dont know either boiler. What are the customer support like for Baxi vs Ideal and more to the point is...
  9. K

    Heat only boilers and confusion

    Trying to get to grips with all the terminology here and what can be done with what. Heat only = open vent boiler? I suppose nothing stops me from sealing it up and sticking an expansion vessel to it? This is the same as a system boiler then? Is it cheaper then to buy a system boiler instead of...
  10. A

    Potterton Gold heat only playing up.

    Potterton Gold heat only, I went there last week no heating, 2 jammed trv's and air in the system. I was up against it, it was late and I had 3 jobs ahead of me. Boiler fired up rads got hot, hung around 10 minutes, all good. Tenant reported magnetic filter leaking, put in quote to replace...
  11. C

    Heat only to system boiler

    Thanks to everyone for the useful info on the forum. I used to work in plumbing many years ago but things have definitely moved on a lot since then and I would appreciate some specific advice. I currently have a heat only boiler in garage with header tank in roof space. I upgraded a number...
  12. king of pipes

    Valliant 631 37kw heat only f62 intermittent fault

    Digital Temperature read out jumping about a bit my diagnosis is PCB on it's way out any one had this . Kop
  13. townfanjon

    Vaillant heat only Home regular 18.

    Pretty new boiler this guys , went to service it earlier today , service got abandoned because the bleeding thing would not go in to high fire , rang Vaillant, no joy , emailed them , no reply yet , anybody know how to do it , cheers in advance .
  14. shaky

    Flow sensors ideal logic heat only

    Hi all how do some of you test flow sensors on an ideal logic Plus heat only boiler? Some boilers just 2 wire but the logic has a 3 wire sensor Thanks,
  15. Sue66

    Choice of heat only boilers

    Hi guys, Need to install a new heat only boiler for an f&e system with a currently condemned potterton kingfisher. It's a five bedroom house with two bathrooms and a hot water tank in the kitchen next to the boiler and gas meter. What boiler would you suggest? I normally like ideals but I've...
  16. H

    noisy main 18 he heat only boiler

    Hi guys, Got a customer with the above boiler that makes a loud noise on start up then stops. this happens intermittently, any come across this?
  17. S

    Main he heat only boiler

    Got a boiler service on a main he boiler on Thursday. Never worked on a main boiler before. Anything to look out for? Said keeps cutting in and out so first check will be electrodes. Cheers
  18. Scott_D

    Heat only recommendations

    I haven't fitted one for ages What's good st the moment? Something with a decent warranty, compact and ideally not needing pump over run
  19. S

    Baxi 212 or Ecoblue Heat Only

    What is the difference between the Baxi 212 and Ecoblue other than price?
  20. J

    Combi Boiler for Heat Only

    Hi, just looking for a bit of advice on how you would plumb a combi for a heat only system. Hot water currently fed off the Aga cooker, looking at a combi for price/value/ease as opposed to a Heat only.
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