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wiring

  1. H

    Advice on a JG UH3 Wiring Zone and how to stop the UF pump running when the HW timer kicks in

    Hi all. First post. I have a JG UH3 wiring zone and I've noticed that the UFH pump always comes on when the HW 'circuit/thermo' is triggered. Hence - rather than just heat the water in the tank - I also heat the UF circuits. I can't see a way to avoid this - it may be the way the circuits...
  2. IanHoll

    External Controller Wiring

    I recently had a Worcestershire Bosch 8000 Lifestyle installed but they also installed the inferior ESI control panel and wireless thermostat. I've just purchased Worcestershire Bosch's CT-200 EasyControl with the RF key. The app is paired with both the RF key and the thermostat and I can see...
  3. D

    Thermostat change wiring

    Hello I'm wanting to replace an old danfoss thermostat with a newer RTSI the danfoss has a live wire link to com. Can I just take that out with the new thermostat? See pics. First two pics are the old danfoss last pic is the new Drayton.
  4. R

    3 wires from cylinder stat to programmer wiring help with pics

    Hi Just had a new boiler system and smart programmer fitted (salus IT500) Plumber wasn't to sure if the stat was wired correctly as he wasn't clued up on smart programmers . Everything works fine on the new system apart from when it calls for heat it don't like it and I have to put it on...
  5. H

    wiring

    Replacing an Ideal Mexico on a Y plan, fitting a Vaillant pure 425 with VRT 350f. normally have someone else do the wiring but can't attend. Does anyone have any experience having wired up something similar and have diagram please?
  6. P

    Hive wiring advice.

    I recently purchased a hive active heating. I currently have a Honeywell cm900 thermostat wired to my Worcester boiler. I'm just looking for advice as to how to wire the hive receiver which has the live, neutral, earth and 1,2,3,4. Please see pic of the Honeywell receiver. Just to add, there is...
  7. C

    UFH wiring

    Hi guys can someone explain to me how the wiring of UFH with the use of actuators is wired into an S plan please? its a 3 zone valve set up, Rads upstairs, HW, UFH downstairs. I'm okay with s plan wiring on a simple 2 channel etc but first time doing UFH with actuators and separate room stats. I...
  8. M

    Wiring open therm stat

    When wiring in an open therm stat. Swapping a boiler and swapping the wired stat on the wall, Honeywell one. For an open therm one. I know you take two wires I believe from the supply to the boiler to the open therm connections in the boiler. Ideal instinct. Am I right in saying open therm is...
  9. M

    Programmer/Thermostat wiring CH problem?

    Hi Guys, Hoping someone can help me, we have a 2-zone heating system that consists of 3 honeywell 2-port valves on a system/hot water tank gas boiler. Recently the HW motorised valve broke - so I replaced it (motor/housing only) and problem solved. However when diagnosing this, I also noticed...
  10. M

    little wiring help 🙏❤

    pricing up a heat only swap here just want to know what's involved. Baxi solo2 customer wants the main compact (no pump over run I believe). Haven't looked for the compact wiring diagram yet but is this going to be straight forward for me? Thanks in advance 🙏
  11. F

    Boiler Wiring

    Afetrnoon, I have had a new boiler fitted and the plumber didn't connect up the controller, the boiler only works by the on - off switch. I an an electrician but don't normally deal with central heating and need some advice on how to connect up the controller. The boiler only has a L and N...
  12. S

    Best way of wiring underfloor heating?

    Good afternoon. We have just finished our single storey extension and due to costs, I have done quite a lot of the work myself (GRP roof, kitchen fitting, joinery etc) I also laid all of our underfloor heating pipes and connected to the UFH manifold having spent hours researching both online...
  13. J

    Wiring for ufh zone Worcester greenstar heatslave 18 25

    Hi, first im gas safe registered so know a bit about wiring but my own boiler is giving me a head ache. Worcester greenstar heatslave 18 25 oil i fitted a nest just linked ch from boiler demand to programmer demand all good. I now want to wire in another stat for my ufh but dont know what to use...
  14. A

    Wiring help needed TADO dual zone to one

    Hi I’ve replaced a dual zone system with one TADO system, pictures attached. The old system had two controllers with two valves which I’m replacing with one system that operates both valves simultaneously. picture of wiring attached (the TADO controller goes over the top) The thermostat...
  15. Reddwarf4ever

    Honeywell V4073A 3 Port Motorised Valve Wiring question

    Hi i checked the wiring colours are the same from the junction box to the current 3 port valve, as the new one. But although I could turn off the house mains, I would prefer not to, is it easy to tell if the wires are live, using a multimeter, ? Have an isolation switch, but not 100% sure if...
  16. Spike47

    Wiring 3 Port valve Wiring Station

    Hi Can anyone have a look at a picture of a Wiring Station for a 3 port mid way Valve, against a drawing that I have tried to do, wanting know if the black wire going into 8 could be the feed to the Boiler ! . cheers Spike
  17. eagleeye

    Which UFH wiring centre is this

    Just put a new boiler in a property that only has UFH and old boiler switch live came from the UFH wiring Centre which is 230 volt. Problem is now that the new boiler sw/l is only low voltage so cant use the same cable. I'm trying to find out what make of unit this is so I can get some info on...
  18. Jeffrey Griffin

    Central heating wiring

    Hi there just to ask on wiring for a salus 2 channel programmer. We only have the boiler coming off this at present. We don't want to seperate the rads and water as yet as this wiring is upstairs! So we are using two channel programmer to basically operate the boiler. We have LNE coming off a...
  19. L

    Wanted; S Y & W plan valves and wiring centre - Used or Faulty

    Wanted; 2 zone valves, 1 midpoint valve, 1 3 port diverted and wiring centre - Used or Faulty Hi, I'm after the above so that I can a mock CH/HW setup to add to my electrical play rig (see link) I'm usually found on EF but figured here would be the more suitable place to ask if anyone has any...
  20. D

    CH wiring of timer/thermostat

    Hi I wonder if someone can help me with this. I have an old but good enough for my purposes Baxi Back Boiler with a Randal 102 timer and a Honeywell thermostat. I spend a significant amount of time out of the country in the winter and want to be able to control my heating via WIFI. Initially...

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