central heating

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  1. P

    Peak Supply for Storage Heater

    Hello, I am replacing my old storage heaters (single supply). I have two choices either buy replacement ones which require only off-peak or buy the more modern type which require peak and off-peak supplies. I am wondering if an electrician will be able to create the new peak supply by running a...
  2. H

    Replacing 3 wired thermostat with 2 wired digital thermostat

    A 3 wired thermostat is being replaced with a 2 wired digital thermostat powered by batteries. Is it necessary to know how the 3 wired thermostat is connected to the boiler before replacing the thermostat? I have attached images of the 3 wired thermostat and its wiring diagram.
  3. EricMark

    Independent control how?

    Independent control it what it says is required for a new build house over a set area, I would think with TRV's fitted to every radiator that is independent control, and using electronic heads one can even include time, not expensive at £10 each head. However the condensing boiler has a problem...
  4. EricMark

    Central Heating and the modulating boiler.

    To start with it all seems to make sense, the TRV measures the room temperature and controls the radiator temperature to suit, as the water flow is restricted the by-pass valve lifts, and hotter water is returned to boiler, so the boiler is throttled back (modulated) so the heat exchanger is...
  5. EricMark

    Can you tell when a modulating boiler is fully modulated?

    The problem with using TRV's to control heating to every room, is as the weather warms up, the boiler starts to cycle as it can't turn down any lower, to some extent anti-cycle software can increase cycle time if on switch on water returns hot, or decrease if it returns cold, but it can never...
  6. S

    Carbon Monoxide detector required?

    Working at a house this week & they’ve just installed a log burner in the living room, the metal flue goes up the inside of the existing chimney breast. I know there is a Carbon Monoxide detector required in the living room, but the breast & flue also runs through a bedroom in the room above the...
  7. Distazo

    Bath instant heater

    Constantly tripping the RCB though earthed properly, replaced but same scenario. Your advise !
  8. S

    Central heating problem.

    Hi Folks, Any advice/assistance would be much appreciated on this painful problem! My Honeywell programmer is jumping from "Off" to "Auto" automatically, randomly and seriously annoyingly! I have replaced the programmer but no joy. Any thoughts? Stoffel
  9. EricMark

    Nest, mind of it's own, DHW.

    I have no cables into the airing cupboard so no tank thermostat, during the summer months the intention was to have 1/2 hour every other day with boiler on, which is enough to get hot water to wash hands, with both Sunday and Monday with 1/2 hour giving an extra boost on Monday. The boiler...
  10. EricMark

    Linking wall thermostat to radiator thermostat.

    I brought four MiHome Energenie TRV heads from my old home, and I decided in this house Nest was best option to control the DWH and central heating given the limits I had to work with, mainly just 2 wires between house and flat where the boiler is housed. There is an option to link Nest and...
  11. A

    Economy 7 immersion heater timer

    Hi, My house is currently on economy 7 as we are fully electric. Our immersion heater has 2 switched one for day rate and one for night rate. Our electricity bill has been sky high and we have narrowed it down to the immersion heater being heated for the full time when E7 switches on for the...
  12. D

    Boiler not firing up

    Hi, I've got a problem with my boiler I was hoping someone might know what it could be (apologies for me explaining in very simple terms), we've been away for 10 days and have just returned and when I switched it on it's not firing up and there's no flame visible through the hole. It's a Glow...
  13. HansJones

    Is an annual boiler service important?

    I had this LPG and gas boiler servicing Tavistock expert install a new boiler in my apartment. And since I just got it, I honestly don’t think that servicing it annually is that important like what my brother think so. Want to know your opinions about this. Anybody?
  14. P

    Replacing 3 phase circulating pump

    Hi everyone I have a failed (seized and leaking) 3 phase circulating pump. A direct replacement is well into 4 figures I have a pump that will fit, and has enough flow to do the job, but it's single phase. The supply to the pump is via a contactor, and there is no neutral. Is there any way...
  15. Ian1981

    Overload protection to a central heating pump x2

    Is it a requirement to provide overload protection to a central heating pump rated at 2.77amps? I’m kinda under impression that an almost 3 amp pump jamming will get rather hot. I mentioned this to the heating installer who has requested we just installed 2 x isolators for the pumps through a...
  16. dlt27

    Central Heating help!

    Hi, don't know if anyone can help. A plumber has just moved a hot water tank from one position to another. Originally it was a y plan, but now he has made it an s plan. The existing boiler has got a pump overun on it. All I wanted to know is if there is anyway I can get it temporarily running as...
  17. O

    Odd Central Heating Wiring

    I've just moved into a new place and decided to fit a Nest thermostat, but the Central Heating wiring doesn't make any sense. The Cylinder Thermostat Call wire isn't connected to anything, and neither is the 3-Port valve HW Off wire The old programmer is a British Gas UP1, and is configured...
  18. Dave Walker

    Line voltage central heating to smart controls

    I currently have a 2 zone line voltage controlled central heating system and would like to convert it to use smart controls. I want an open system that I can integrate to openhab, so not Nest or Hive. I'm not sure where to start, any advice?
  19. Paul Dodds

    Central heating programmer cable 3 and earth

    Hi, Hope you're all doing well. I have a customer who needs a 5 core cable to the boiler from the wiring centre. At the moment the feed is coming from a 13a socket in the upstairs cupboard through the programmer into the wiring centre and then 3 and earth under bathroom floor and into the...
  20. sinistersnipe

    New home... domestic hot water linked to central heating?

    Hello, Moved into a new flat about 6 months ago, and now that the weather is getting warmer and we want to turn our heating off we've discovered a little hitch - it seems like domestic hot water and central heating aren't programmable separately. Specifically, if either the programmer or the...

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