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heat

  1. BuilderDan

    unpressurized open/direct UFH with buffer tank heat source

    The following is a proposed very simple installation of UFH open/direct to an existing 1000 gallon fossil fuel hot water storage tank: We are told that this won't work since the UFH pipework and pump are above the height of the tank, and therefore gravity will empty the UFH... But our...
  2. G

    Removal of baxi back boiler now i have installed a combi and no heat upstairs

    i have relocated the pipes from the old boiler and remove the hot water and heating expansion pipes i have used the hot tank pipes to fix a small rad in the old airing room removed the pump and connected the flow and return from the boiler 5 out of eight rads d/stairs work the rest nothing this...
  3. J

    Heat Only Boiler - Radiators Hot But No Hot Water

    Hi Guys, I have a heat only boiler with two tanks in the loft. I have recently drained the system and since then i am not getting any hot water. The hot water tank front two pipes are hot, however the one coming out the top is cold. Radiators are heating up completely fine. Hot water taps...
  4. Atanas Peev

    Heat exchanger problem

    Hello everyone do any one had such experience with main heat exchanger on combi boiler Thank you
  5. H

    Ideal Heat H18

    Hi All after some advice. Called out to a boiler with a noise(didn't do it when I first got there), reverberating noise on low rate. It was also due a service, checked and cleaned condensate( and pipe), cleaned heat exchanger,(replaced burner as deflection in the plate), replace spark/flame...
  6. D

    Lux Heat Column Radiators?

    I'm contemplating treating the front room to some aluminium column rads. Looking on the justradiators site there's 1 that fits the bill at nearly 2 metres long. A company called Lux Heat makes the rad I'm interested in. Anyone heard of this make and are they ok?
  7. A

    Baxi heat only boiler - switches off after a few minutes with a red flashing light

    Baxi heat only boiler (7 yrs old) - switches off after a few minutes with some banging noises followed by a red flashing light on boiler Reset the boiler manually after 5 mins and it runs fine all day Next day when i switch on the boiler on it does the same thing ive opened the screw on the pump...
  8. D

    Radiator doesn't heat up

    Hi all, Sorry for the basic question, but one radiator in one my new ( old house ) house doesn't heat up, its a 15mm pipes but the rest of the system is on 10mm so it has reducers close to the rad. I have opened the taps fully and notice that the left-hand side pipe is warm, when the heating...
  9. J

    Heat loss/ rad sizing

    I've had two suppliers tell me they'll size the rads in a new build, the only info they want is the size of each room. They said they don't need to know about windows, Insulation, what's above it or below as it's a new build. I've heard that it's ok to oversize rads so that you can get a lower...
  10. D

    Any advice on heat recovery fans from Vent Axia and how good thier "h" humidity function works?

    Hi I have an old house which has had double glazing fitted to the rear of the property, in the kitchen, good for heat retention but not for damp. I was expecting to buy a Vent axia in-room MHVR fan to help with drying out the room and maintaining its temperature. The model which I think...
  11. N

    Water cylinder re heat time

    Hello all, i am doing work for a customer who has asked me what the reheat time of a 250 litre cylinder is. To be honest after all the years of doing plumbing this is a question that i have never been asked before because usually if you need a hot water cylinder then it is what it is, you just...
  12. N

    Dream heat pump

    Hi is dream heat pump good?
  13. G

    Power flush before blocked heat exchanger renewal ?

    Evening All We are having a new heat exchanger fitted to a Veissmann boiler, the boiler is only six months old, the installers carried out a power flush but only after the boiler had been running for about a fortnight, then after six months it failed to heat radiators to temperature. Viessmann...
  14. L

    Heat exchanger for new boiler on legacy open vent system

    Hi, We are planning to replace a 50-year old boiler for the communal heating-only (no hot water) of a residential block of 12 flats with 60 radiators. We have an open vent system. Our heating engineer recommends the GB162 100KW, WITHOUT a plate heat exchanger, because he says that heat...
  15. G

    Baxi duo tec 28 heat exchanger problem

    Our boiler went off with error 133. I investigated and found the ignitor module had melted! This was replaced. When the boiler fires up now there is intense and immediate heat radiation from the left upper and lower front side of the heat exchanger unit. I switched off immediately and have a...
  16. S

    Hi have a potterton performa 24he hot water flow is very slow. Have changed plate heat exchanger and made no difference any ideas?

    Hi have a potterton performa 24 he hot water flow is very slow. Have changed plate heat exchanger and made no difference heating is fine any ideas?
  17. T

    Heat Exchanger

    We suspect that we might need a new heat exchanger for our boiler which is a Vaillant ecoTec plus 428. Can anybody who has experience with this type of boiler tell me how easy it would be for a Heating Engineer to confirm that this is our problem? Also, if it needs to be replaced, what would be...
  18. M

    Combi boiler pre heat

    On average how much a year would you suggest it cost to keep.the hot water preheat on. On a combi boiler. Thanks.
  19. P

    Worcester greenstar 18ri heat exchanger/heat cell

    Plumber says the heat exchanger aluminium baffles are breaking down and blocking the pipe which he showed me,now the question is do I change the heat cell or go for a new boiler. My boiler is 13 years old.
  20. R

    "Main" (Baxi) 24HE A Heat only boiler temperature setting

    Hi. Bored and wondering about a friend's boiler that was fitted a few years ago and that, having been involved with the heating system, I take an interest in. One of these jewels...

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