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  1. T

    Nodular network of heating sensors/transponders?

    Theoretically, is it possible to utilise/connect to the sensor in a heater, even if the heater is not connected to a power source? Presumably, the sensor has some of antenna which would enable it to sense temperature outside of the circuitry. If so, is it possible to network these sensors with...
  2. telectrix

    Landis & Gyr RWB 2 Channel Programmer Central Heating & Hot Water Timer Module

    HELP !!! i need to replace the above. priced at £225.00, client not happy. what i would like from esteemed experts in heating field is ... what can i replace with at sensible cost. connection wise, there is only L and N in and a T/E back to wiring centre in 3 and 4.
  3. A

    Immersion heater not heating

    Hi. Newbie hear. Having problems with immersion heater not heating. Put new St/St tank in loft to replace old square one with lift up lid. Immersion heater worked fine on old one with short heater on 13A fused switch. New one kept blowing fuse so changed to 20A double pole switch. So far so...
  4. M

    Regulations: Distance between central heating Pipe and Consumer unit

    Hello Guys Hope you are all keeping well and safe in this unprecedented times. Just wanted some advise please. So Yesterday i had a new radiator installed but the installation required extending pipe work under the stairs near the consumer unit and where the main electric feed into the house...
  5. P

    Wet Under floor heating manifold and multi room stats...

    Evening chaps hope you’re al keeping well. Quick tech help question, I’ve got two large high spec new builds to wire up early summer and they’ve both got wet underfloor heating my task is to wire it up obviously. I’ve never done one before and it’s also got 5 room stats upstairs alone. Have any...
  6. EastCoastPete

    Contactor for Heating Radial

    Hello All, I've a 1 bedroom flat installation. All standard but the customer will AirBB it and wants a master switch to encourage guests to turn off the (3x 1Kw) wall heaters when they leave. I'm thinking 16A contactor, any good /bad makes or takes on this route? Thanks, Pete
  7. S

    No heating , changed Solenoid valve

    Hey , new to forum so not sure how it all works but here goes Last week the heating wouldn't come on when called for from Programmer, went into storage and opened the solenoid valve manually and the heating fired up so i assumed the motor was done, ordered a new one. It came yesterday and i...
  8. A

    Incubation chamber

    Hello, I'm working on a project involving 160 w, 230 V, 8,5 m long heating cable wound on a copper chassis. The heating element heats approx. 2 cubic meters of air inside an insulated rack. I'd like to put the chassis on the floor of this rack and measure temp somewhere near the middle of it...
  9. M

    Changing ceiling heating controllers

    Hello all Still relatively new in to trying to do more of my own works...background commercial. Someone has asked me to change what he describes as ceiling heating controllers. Looking at these photos they do look like they are just controllers and set to desired heat and have no thermostat...
  10. R

    Heating Electrican required London Kent

    We are looking for self employed electrician from a heating background looking for a long term contract excellent earning oppportunity We are looking for an electrician with experience on heating systems to join our team . Work will be around the kent and South East London areas. You must have...
  11. H

    Hot SWA gland

    I have a hot SWA Gland on a 11kV cable. The cable has a SWA Gland on each end. I was under the belief that this would create a current circuit. There is 3 trefols running in parallel. Any suggestions
  12. L

    RCD tripped by central heating which is on a separate circuit

    My central heating is on a dedicated RCBO. The house has two other RCDs, one including the fridge, freezer and cooker. The other RCD is tripping virtually every day after the central heating has been on for 40 minutes or so. It will then often trip again after a few minutes. It can be reset...
  13. B

    Replacing underfloor heating stat with no floor sensor.

    Hi, I've not really got involved in underfloor heating before, but a customer asked me to replace her OJ Microline manual stat for her bedroom heating which had packed up with a replacement generic version she got from Amazon. I assumed it'd be a straight swap so said yes and wired it up, the...
  14. E

    Underfloor heating clicking on and off (electric)

    Little video here: View: The relay just clicks on and off. I've attached a few photos of the internals of the unit. It's quite old, but was working a while ago, so perhaps a replacement might sort the problem, what do we reckon? I guess it just uses an ambient...
  15. A

    Big motor heating problem

    Hi guys I have a big problem with 3-phase induction motor in star connection The motor power is 3-hp When the motor is starting periodically (many times per minute) it is over heating after 10 minutes from start of working. If the motor is in continuous operation it doesn't heat but if it...
  16. C

    Pulsacoil 2000 not heating store

    Hi hoping for some help here, I turned off my boiler over xmas, came back turned it on and now it's no longer heating the store. I've checked both off peak and boost, neither are warming, I've checked and tried to reset both thermostats on both elements, but they both seemed like they didn't...
  17. M

    Turn on central heating when no wifi with Nest system ?

    Hi, My daughter's wifi has gone down, all of south west London Virgin users have no wifi for past 3 days due to someone cutting a cable. She has just moved into a house with Nest installed and is using underfloor heating to get heat. Does anyone know how to manually turn on the heating with...
  18. V

    Central heating problem (UK)

    My dilemma: I have Gas central heating ('S-Plan' with two port valves. Hot cylinder also has an immersion heater). No activity at the relevant zone valve when 'calling' for hot water. Powering the Immersion heater does activate the hot water zone valve. I have a non-vented cylinder, fitted...
  19. M

    Underfloor heating separate thermostat

    we have a conventional heating system and underfloor heating recently installed by the builders plumber - it’s all wired up (pump, valve, thermostat receiver etc..) but both the electrician and builder seem to be at odds with the connection at the boiler. currently the boiler just has LNE and...
  20. P

    Ensuring compliance with 543.2.6 (iii) when using heating pipe to bond gas main

    Interested in opinions on this. Need to put the boiler (in my own house) in a temporary location for 6 months while an extension is built, when it will go in the extension. Running a dedicated 10mm to the temporary location will be a pita, and entirely unnecessary since I already have what...
  21. J

    Looking for books that’s go into detail on heating systems especially S Plan and also wiring on commercial plots such as communial flats etc

    Looking for books that go into detail on heating systems especially S Plan and also wiring on commercial plots such as communial flats etc thanks in advance !
  22. J

    Error E014 (overtemperature) in Aurora PVI 3600 invertor

    Does anyone know if there is a typical fix for this? Someone has given me their old inverter because of of the error code.
  23. O

    flexicom 24cx has Hot Water but no Central Heating

    my flexicom 24cx has Hot Water but no Central Heating. the problem seem to be the analogue switch selector. it looks as if it is stuck on the off position and won't move to the timer or on position. Is it that I do not know how to move it??
  24. S

    LED downlights and heating pipes

    Evening all. New to the forum and was wondering what peoples thoughts were on installing downlights near plastic heating pipes ? I was planning to install some enlite E6 LED downlights in my hall way. I somehow managed to pick a spot right in between a couple of pipes. Looks like I'll need to...
  25. 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...
  26. 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...
  27. 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...
  28. 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...
  29. 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...
  30. 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...
  31. 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.
  32. 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
  33. 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...
  34. 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...
  35. P

    Heating Belt for Brewing

    I purchased a couple of these which arrived today 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...
  36. 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...
  37. 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...
  38. 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...
  39. 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
  40. 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...
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