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wiring

  1. J

    Internal fuse keeps blowing when i connect HW zone i to my wiring centre!

    I have wired an s plan plus system. Consists of 2 hot water 2 port valves and one central heating 2 port valve. The boiler is a worcester bosch cd classic. Problem began when i turned the boiler on first time and nothing happened! Found that the internal 2.5A slow blow fuse had blown...
  2. M

    Wiring a salus t105rf to older Worcester ??

    Hi guys. Any advice on fitting the above stat to an older Worcester green star HE? The boiler is existing so already has it’s live neutral earth but the old room stat has been disconnected due to the house being required. Any help would be great thanks.
  3. M

    Stat wiring advice on a Worcester?

    Hi all. I’m fitting a Worcester 30si tomorrow and it’s having a Nest stat. I’m terrible with wiring so any advice you guys could give me would be great? Cheers
  4. G

    Electrician wiring heating

    I had a debate with an electrician about correct wiring of regular Worcester boilers. I told him it needed to be wired to give the boiler control of when the pump comes on. This would mean up dating cables. He said using the original wiring just a switch line to activate both at same time was...
  5. townfanjon

    Unvented wiring .

    Strange request for Easter Sunday lol , its just in my head . have any of you fine chaps got a wiring diagram for a y-plan with a new 2 port wired in for an upcoming unvented installation. I usually change them to an s-plan but the boiler is miles away from the cylinder and would cause a load...
  6. Best

    S plan probable wiring fault?

    I replaced a programmer on an S plan system in a small bungalow and when checking zone valves operation, I discovered an existing problem. There is the usual 2 port MV for radiators, (controlled with hall stat), plus a second 2 port MV for hot cylinder, (controlled with cylinder stat)...
  7. J

    salus wiring diadram help

    Hi I know there is similar questions to Salus wiring on the forums, but I didnt see anything related to mine , My apologies if Im wrong , I bought a new Salus receiver and battery thermostat to replace an older Salus one . I did like for like on the wiring as in attached pics, but...
  8. Scott_D

    Wiring diagram combi

    would anyone have a wiring diagram for a combi with 2 heating zones? Been asked to fit 2x nests Maybe out if my league but wanted to do some research
  9. P

    Salus IT-500 wiring help

    Hi pretty new to this forum so bare with me. I've fitted these before but only on combi boilers and now I need to fit one on a separate hot water and heating system. It's the salus it-500 and I have attached my wiring scheme. Just need to know which one goes where on the salus it500 if you are...
  10. D

    3 port motorised valve wiring question.

    Good evening everyone, Question 1 I have just replaced my 3 port motorised valve head and wired it in. When looking at my chocolate block connector the orange and grey wires are in different places than the diagram on the instructions shows. As you look at the terminal block for all the wiring...
  11. spanner

    Three port wiring question

    Hi guys. Hoping for a quick Three port answer. When wired to programmer tined switch?,is this the common wire to cylinder stat??. As what I'm trying to retrieve is when the water is used and goes below set temperatures to fire up boiler. Just trying to get heads up about the wiring again. This...
  12. M

    Vaillant ecoTEC settings for use with vSmart and VR66 wiring centre?

    We have a new Vaillant ecoTEC 624 boiler (installed in November), operating as a system boiler. It wasn't getting on well with our Honeywell thermostat, so we decided to get the vSmart thermostat and VR66 wiring control centre, which should work better with it. One thing that seems to be...
  13. MikeJhn

    Horstmann Wiring Guide App

    Anyone been able to download the above, I can't seem to find it.
  14. M

    help with wiring up new boiler

    hi I have just replaced a potterton promax he and cant get my head around the wiring to replace it. 5 cables in as marked on the original boiler are SL E N and 2 PFs but where was it getting the 240 from? And also why is there just 2 pump feeds going into same connector and nothing returning...
  15. J

    Nest wiring question

    If this is going into an existing system with a programmer and room stat is it just a case of wiring the nest stat into the old room stat and the heat link into the old programmer wires? Cheers
  16. F

    Wiring help to Hive controller

    Hi all, I am after some advice regarding an issue after a Hive Dual Channel install. I have installed the Hive system to my gravity fed HW and pumped central heating system and it works fine, water comes on as requested and the pump comes on when CH is selected. The issue I have is that the...
  17. J

    Replacement Wireless Thermostat Wiring

    I am replacing my old RF thermostat (Tower RF-205) with a Heatmiser RF-Switch but just wanted confirmation on the wiring. The old thermostat has 4 terminals. Live and Neutral I'm happy with but for some reason they have labelled the other two Out 1 and Out 2. The new receiver has a ton of...
  18. M

    Basic Thermostat Wiring Help

    Hi everyone I hope you all had a good Christmas and New year. I really good do with some help in wiring a TR1 2 wire thermostat to my trusty old Danfoss 103 heating timer. All I need to know is which connections from the timer to the thermostat do I need to wire together? So I can use both the...
  19. A

    Wireless thermostat Wiring live and neutral from boiler terminal

    I am a gsr and just wanted clarification as to why its not recommended to just use a 5 core cable connecting live, neutral, com and nc from combi boiler terminal box rather then feeding another cable from spur socket just for live and neutral for reciver box. Any advise
  20. S

    Wall Thermostat wiring. HELP...

    Hi, I’m new here and would appreciate any help and advise. I have a Towerstat Rs wall thermostat. See pics below. I have bought a new tower thermostat but the wiring looks different. I tried to wire it but it blew a fuse. Could anyone tell me which colour wires need to go into slot 1 2 and 3...

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