heating

  1. I

    Thermostat stopped clicking/no central heating

    Hi guys, Had Baxi round to do a service, and immediately after the central heating wasn’t turning on (hot water is fine). Had them back out and they said the boiler is fine, it must be a faulty thermostat. Replaced the thermostat today, and still nothing. When I connect the live and call...
  2. L

    Underfloor heating with economy 7 ?

    Hi everone can anyone advise me on two things I'm having underfloor heating fitted and want to run it on my economy 7 Has anyone managed to do this and how could you control the input? What sort of electric metre could be used? Bearing I. Mind it turns off during the day so won't have...
  3. S

    Under floor heating over 3kw

    Hi guys Being to a job today where the builder has installed some electric under floor heating Total area is 20.5 m2 The mats are 150w per m2 The total load is just over 3kw. He has first fixed the wiring and checking it he has used a socket wired off the ring main to spur off to a switch...
  4. J

    Electric heating advice

    Hi folks, A relative of mine has recently brought a small flat and needs some heaters installed. There is no gas supply to the property so electrical heating is the only solution however I am a little out of touch with what's currently available as I moved away from install work some time ago...
  5. D

    230/250 V Contactors Buzzing/Hot

    Hi. I've got some lighting & cooker contactors buzzing & overheating.. There are a few old ones in situ with visual thermal damage. coil rated at 250V I have new ones that are quiet but still warm to touch the sides. coil rated at 230V I've read that the 230/250 AC coil contactors dont cope...
  6. 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...
  7. B

    Gas or Electric Heating

    Does anyone have knowledge on how the Lifetime cost of gas and electric compare in a domestic application. Almost by default gas central heating is installed assuming that it’s cheaper option.
  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. A

    3 Phase heating coil

    Hi. I'm making a 3 phase furnace with heating coils. Total power rating is 5 KW. I have to make one heating element for each phase. How do I split the KW rating? Will it be a straight 5/3? Also when calculating the resistance for each heater, should I calculate based on 220V(single phase voltage...
  10. spud1

    Overall main switch where the installtion has off peak heating ?

    What is everyone's general procedure for provision of an overall installation main switch isolator where an installation has two DB's - one off peak, one on peak? Is it crucial a linked 4 pole main switch be installed to isolate both sets of tails or can a dispensation be made with some clear...
  11. P

    Heating Belt for Brewing

    I purchased a couple of these which arrived today https://www.ebay.co.uk/itm/New-220V...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 The belts are getting too hot. If I could step down the voltage would this make the belts operate at the correct temperature ? If yes then what do I need to...
  12. P

    Domestic pre heating water to combi boiler wih solar pcwer

    Some months ago I remember seeing a advert for basically a squarish seeled box filled with bags that are filled with some kind of chemical that can accept a charge using a voltage from solar pv that are capable of heating water before it goes into a combi boiler saving on your gas {have looked...
  13. happyhippydad

    Which underfloor heating control panel?

    My customer wants to change her control panel for her underfloor heating. She finds it too complicated and wants something more simple. I have only ever fitted the ones that the customer has supplied along with the underfloor heating. Here is the one she has at the moment: Can anyone...
  14. D

    Fault on underfloor heating mat.

    Hi All I have a fault on an underfloor heating mat which is as follows L-N no continuity (should be around 200 ohms) N-E short circuit L-E clear I need to find the exact location of the fault so I can take a tile up to repair it, I have thought about hiring a thermal imaging camera, just...
  15. J

    Domestic Help on learning heating systems for domestic properties

    Could someone point me in the right direction for learning everything I need to know on heating systems throughout my apprenticeship I didn’t get to do a lot of it and would like to know my stuff . Thanks
  16. E

    Underfloor Heating Thermostat in Bathroom

    Hi, Is it allowable to install an underfloor heating thermostat inside the bathroom but outside any of the listed zones? We are having a room converted into a bathroom and there is no suitable place directly outside the room to install it, however the new bathroom itself is about 3m x 3m and...
  17. M

    Heating element connection

    Hi have been asked to fix connection on 3 phase printing machine the cable has disconnected for poor connection where cable grab been pressed obviously its not soldered, are there some high temp solder kits available?
  18. P

    Heating wiring advice

    I have wired a heating system with 8 heating control zone valves and 1 on water,all work ok,problem is it has heating pump which comes on with heating valves but also with hot water zone valve,how can I separate the heating pump to only come on with the 8 valves.
  19. T

    Domestic Air source heat pump heating issue

    Hi there, I have an air source heat pump with a few issues: 1. It gets stuck on defrost mode. When it goes to defrost, it gets stuck and ends up becoming an air conditioner in the depths of winter (fun). I suspect this may be a faulty valve (or what ever reverses the coolant) getting stuck on...
  20. C

    underfloor heating do i need a CPC-Mesh

    just checking the regs 753.411.3.2 which state i need to use a conductive mesh connected to the CPC of the circuit. I am installing a flexible heating mat from Warm Up in a kitchen and i dont see any mention of the mats needing a conductive mesh needing to be installed??
  21. G

    polypipe underfloor heating, wifi vs NEST

    HI all, got a holiday let that wants to control heating from their home as people leave it on etc. setup is s plan upstairs HW and heating(rads) , with stat up there for heating downstairs two zoned UFH, bathroom and Lounge ive priced up the polypipe stuff, new center and stats and its...
  22. J

    Commercial Electric space heating

    I need to provide heating for a converted warehouse, approx 150 - 180 sq meters. (1 large square room) The space will only needed to be heated for a couple of hours in the morning, I was thinking possibly fan assisted to get the temp up quicker, any suggestions? Thanks Judd
  23. M

    Top electrician and top heating engineer

    Doing a periodic...previous certs show full re wire in 2011...so...the old colour mains tails were obviously just tat they wanted rid of...only 16mm main earth jointed in the board But then...along comes the plumber/heating engineer and decides he'd rather be a comedian
  24. K

    HELP. Back plate wiring to smart heating hub HELP

    Trying to install Drayton wiser hub r... The backplate has previously been wired and is as in picture. Attached. The diagram is in instructions as how it needs to be. Attached. Which wired need to go where.. Please help
  25. 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...
  26. GBDamo

    Sanity check regarding electric underfloor heating.

    Been asked to look at an electric UF heating system. As yet it is laid but no connected and no supply is present. There are two mats at 1600w so total 3200w, 14A. My intention is to run a feed off a 20A RCBO via a 20 DP isolator to the thermostat. Run in 2.5 T&E, clipped direct total <10m...
  27. B

    Trainee Beginner knowledge on heating?

    Hey guys, So I'm almost finished my apprenticeship. I've suddenyl realised, I have no clue about anything to do with heating systems. The only thing I know is to wire to the FCU, thatsit, anything further and I have no idea. I constantly hear people talking about zones, valves, diverter...
  28. Daniel Coakley

    Domestic Electric Underfloor Heating - Tripping RCD

    Hi all, wondering if anyone can help me with a recent issue I've had with electric UFH in a small flat. Found that when the UFH starts, the RCD trips immediately - this started last Saturday while I was away. Prior to this, I had heard some buzzing coming from near the UFH unit controller in my...
  29. R

    S plan heating system

    Hi guys new to the forum. I’ve landed on a job on a dental surgery. The plumbers have installed new heating and got water system and basically left me to wire it up. Struggling to get my head around it and could do with some help. They’ve installed two boilers that are going to work together...
  30. pirate

    Infrared heating panel advice sought

    A very simple question for you learned people out there. Has anyone installed/used infrared heating panels, and if so, how do you rate them? I am currently looking at panels from Surya and Herschel. They are quite expensive and we need quite a few for the project so I would be very grateful for...
  31. JC Heat

    Upgrade your old underfloor heating thermostats

    Just for your information, to conserve energy consumption with your underfloor heating, it is a great idea to replace your old thermostats with the programmable thermostats. With this kind of thermostat you would be able to set the timer to go on and off at certain times of the day. With this...
  32. Adam_92

    Insulation restistance on heating system

    Hi, I do not work on a lot of heating systems but when doing an insulation restistance test on a S plan heating system do you only remove the digital programmer?
  33. dlt27

    Electric underfllor heating with humidistat.

    Hi all, thanks in advance for any help. I have been asked to do some electrical work in a convent and they have been asked if an electric underfloor heating matt could be controlled by a humidistat. The room is going to be an archive room so needs a dry environment. I can't see how a hunidistat...
  34. Gus Beare

    kva for a flat with all electric heating

    Hi everyone I am tearing my hair out here. I have trying to get UK Power Networks to quote for new electrical supplies in a property development I am managing. The property is a conversion into four one bed flats. I have been asked by UKPN to provide the After Diversity Max Demand in kVA for...
  35. B

    Electric only one bedroom house heating!?

    Hello everyone, i just got a small property with no access to gas... everything is electric. What are the options for heating and hot water? The old installation with the tank in the loft and the 100L cylinder looks outdated and i am not a big fan!! I am very confused at the moment and don’t...
  36. JC Heat

    New to the forum with underfloor heating background

    Hi everyone. I look forward to our chats and shares. We supply, install and repair underfloor heating in South Africa. Any questions are welcome.
  37. 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...
  38. M

    Need help wiring a Heatmiser RF Switch for heating and hot water control.

    Hi All, Im not an electrician, but i like to do things myself if possible, so i'm here to ask for some help in wiring a new RF switch for controlling my central heating. I already have a heatmiser system that controls my underfloor heating downstairs, but my upstairs rads and hot water are not...
  39. C

    Heating programmer problem

    Recently had installed a timeguard 2 channel heating programmer. When I set program for CH starts pump but does not fire up, if I also set program for water then CH comes on. This causes a real pain when setting timer, as I have to set 3 times 7 times 2 settings =42! Also I would prefer a...
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