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wiring

  1. A

    Wiring Programmable Thermostat

    Hi Guys. I have a Worcester Greenstar 30i boiler and when we moved in we had our old Thermostat removed and a Nest installed, I have now removed the Nest ready to put the old thermostat back on (Honeywell CM907) but don't know where the wires are meant to go. I think I've done the boiler bit...
  2. L

    Tado & UH4 wiring centre

    Hi i intend on installing some of tado’s kit ( Numerous Thermostats/ TRV & the extension Kit) & am in the process of first fixing for it. The system will be S plan type. I have a mixture of 3 underfloor heating zones - All hardwired from tado thermostat to heating manifold zone 5 Rooms with...
  3. D

    Nest install - existing roomstat wiring

    I have a google nest (3rd gen) to replace the existing wired roomstat in my new property. Having had a quick look at the wiring it looks like it might be a high voltage one I have? (nest says something about not being compatible with high voltage wiring?) It has two wires plus an earth. There...
  4. C

    Wiring UFH and Radiators

    Boiler: Valiant Ecotec 832 UHF (new): 2 zone mixing manifold, Heatmiser Neo Air thermostats x2, Heatmiser UH8 RF (wireless) wiring centre Central Heating (existing): Netatmo radiator valves connected to Netatmo thermostat and boiler relay Other (new): Two Honeywell motorised valves - 1 for CH...
  5. R

    Dual Thermostat Wiring

    Hi guys, can anyone advise where I can get wiring diagram / instructions for a Thermomess dual thermostat. There are examples on line but not for this make of stat. Think its Italion
  6. A

    Danfoss zone valve wiring

    hi All, i am blocked on an issue: connecting Danfoss AMZ 112 (230VAC) ball zone valve to Heatmiser UH4 wiring center,seems wiring center turns ON the valve (open) when room stat calls for heat, which is fine, but when room stat stops calling for heat, wiring center does not close the valve...
  7. P

    Is this Wiring Correct?

    Hi Everyone, Was looking for some advice on the below. Boiler is working and controlling the heating however the hot water diverter valve is not talking to the nest and has been put onto manual override which is causing the hot water to be permanently on and extremely hot. All new parts as new...
  8. K

    Wiring center UH8-RF

    just figuring out the wiring for combined radiators and underfloor heating. Zone 1-3 not shown on my sketch but the actuators would kick the valve and pump I'm assuming as its all relays no wiring. I just need to confirm the addition of the radiator valve. Apologies for the sketch :)
  9. Bibbs118

    Weird wiring/pump over run

    Hi, I've got a rewire job next week. The current setup, old cast iron boiler with pump over run, (currently wired so pump over run isn't working). There is a (new) 2port and pump to the cyl with cyl stat with bypass. There is a bronze pump for DHW There is a (big) pump for the CH. (And...
  10. E

    Nest Opentherm wiring

    I need some help wiring nest Opentherm on vaillant boiler. It's currently wired to 2 zonevalves to split the ground floor (ugh) and first floor radiators. I have attached some images to help. Thanks
  11. R

    Nest wiring for a new Worcester heatslave 11 combi 18-25 3amp nest 5amp boiler

    Replacing a clients old standard boiler with new oil heatslave 11 combi 18-25. It has a nest wired in and looking on the instructions it says 3amp max to nest but the boiler requests 5amp. Anyone with suggestion around this. Im sure there are plenty nests wired in to oil boilers. Thanks...
  12. D

    Salus to Worcester wiring

    Hi all. I have just purchased a wireless room thermostat for my central heating. I've come to wire in the receiver to the boiler and found the boiler manual (Worcester 28i jr) calls for three wires, as I expected but the receiver (salus rxrt510) depicts four terminals. I'm not 100% sure which...
  13. M

    Tado wiring on S-Plan with Unvented

    Hi all. Anyone install tado some tado kit before? I am wiring up an S plan with an unvented cylinder and the cylinder stat common is wired to the brown on the hw 2 port and NO is wired to DHW on. Tado needs to be wired up the standard way. Hope that makes sense. Thanks
  14. A

    System wiring

    I'm looking for advice on wiring an unvented cylinder and systems boiler. I'm ripping out a Boilermate 2000 (1st floor) and Potterton Suprima (ground floor) and was wondering if all the electrical connections for new thermostats and ability to wire to the S-Plan and boiler will already be in...
  15. Inverness

    Hive wiring To a room stat

    hi guys, how easy is it to connect a hive to a room stat?
  16. jonnyswamp

    2 port wiring question

    Haven't been on for quite a while, but have a question for greater minds than mine Have an unvented to change which is currently controlled by a 3 port, will be fitting a 2 port to the flow when cylinder is changed Apart from changing to S plan (which isn't really an option) how do I wire the 2...
  17. 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...
  18. 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.
  19. 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
  20. 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...

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