Hive with installation with a Vaillant ecoTEC plus 824

Hive is basically a cloud connected thermostat with scheduling that lets you control your Heating or Heating and Hot Water from you phone or a computer. This post shows how to wire it up to your Vaillant ecoTEC plus 824.

WARNING: this is information is to be used as is. I can also not guarantee it will work for you nor can I be held responsible/liable if you use this information.

NOTE: It definitely worked for me though.

Vaillant ecoTEC plus 824 connections:

The diagram below was taken from the Vaillant ecoTEC plus 824 manual, by default connections 3 and 4 are connected.

You will then need to work with the L, N, 3 and 4 pins to hook your combi boiler up.

Vaillant ecoTEC plus 824 Connections

Vaillant ecoTEC plus 824 Connections Closeup

This loop above needs to be removed in order to install your Hive.

Vaillant ecoTEC plus 824 Connections Closeup Ready

Hive connections:

Hive comes in two flavours, Single channel (Combination Boiler) or Dual channel (Combination Boiler or Boiler & Tank)

Hive Connections

Wiring your Hive into your Vaillant ecoTEC plus 824:

Single Channel Receiver Wiring:

Single Channel Hive Wiring

Dual Channel Receiver Wiring:

Double Channel Hive Wiring

Using you Hive:

After setting up the Network Link and the Thermostat (instructions come with the hive), you can then login on-line and create a schedule with set temperatures:

hivegui

It also logs the temperature for review:

TempDaily TempMonthly

 

60 thoughts on “Hive with installation with a Vaillant ecoTEC plus 824

  1. Hi, I’m trying to wire up my Hive to my plus 825 and struggling to see where the common and heating on should be hooked up. Tried cross referencing your wiring diagram with the 824 manual and can’t find it. Any tips?

    • Matt,

      I just have to start off saying I am not a boiler engineer, nor do I know the following will work for sure or accept any responsibility in any way if it does not.
      This also assumes you are using the 230v EU version of the Hive.

      That being said, I had a look at the 825 installation manual (here) on page 19 there is a method for connecting 230v controller.

      Conditions: Connecting 230 volt controller:
      ▶ Connect the switched live supply with the terminal
      marked RT at X1 (beside the LNPE connections) then
      remove the link at X100 (do NOT connect 230 volt to
      any other terminal than the RT connection).

      So I think you need to:
      1) Remove the bridge connection 24v at x100 (12)
      2) Connect the Hive Heating On to the RT at x1 and Hive Common (or hot water off) to the Live x1

  2. Hi I have a vaillant 837 ecotec plus and the wiring looks the same, will this work for me ?? im trying to install the hive

    • Barry, looking at the manual, the 837 uses the same controller board and connections as the 824. Therefore I would think the above wiring, for the 824, would be the same for the 837.
      Good luck and let me know how it goes.

  3. Hi Im trying to work out if i can get Hive to work with my ecotec plus 612.
    Any ideas? Im an electrcian by trade but am struggling to see how to get this working as it seems to use some kind of communication from the programmer on the bus connection.

    hope someone can help

    • Andy,

      Have you got a real-life picture of the control board?

      It should be the same as the 825.
      I think you need to:
      1) Remove the bridge connection on X100 white for 24VDC room thermostat.
      2) Connect the Hive Heating On to RT / 230V AC room thermostat at X1 and Hive Common (or hot water off) to L at X1
      ecoTEC plus 612

      • i’ll try and take one but it is exactly as this drawing. Its also multi zone so i have a stat upstairs that connects into a panel in airing cupboard and theres an outside thermostat. any ideas on them?

  4. I managed to connect Hive 2 to Vaillant ecoTec Plus 835 successfully. The 3 amp live connection from a spur to the boiler was already connected to LN and earth.
    I used a 5 core cable from the boiler to the Hive controller. Connected Blue to N, Brown to L, Green/Yellow to Earth, Grey to 1, Black to 3 to the Hive.
    Inside the boiler I connected Brown to L, Blue to N, Green/Yellow to Earth, Grey to RT and Black to the one marked blank on the left of RT.

  5. ok so i basically am switching the x1 rt connection in the boiler with the hive to bring my heating on and offf.
    What about my hot water tho? any idea on where this would be connjected?
    Also i have a room thermostat upstairs which is connected to a panel in the airing cupboard.
    How do i make any multizone connections for the upstairs stat if i am to change it for a hive stat

    • Andy, if it is like the system on page 10, it looks like it is using the eBUS system.
      Otherwise the Hive multi-zone uses valves that would probably require installation into your heating system.
      Maybe there is some way of hacking it together by using the hive to control the pumps for zone 2. I.e. pumps are on if Hive zone 2 wants heat and off if hive zone 2 is good?

  6. Hi salti

    I want to install hive on our valiant eco etc 28 and I wondered if you can check please

    Just wanted to check I’m on the right lines

    X106 disconnect wire on rt 24

    X1 RT to hive on
    X1 L to hive common

    Then do I also run the live and negative into the X1 ?

    I have wired like this but it’s not working ?

    Thanks

  7. hi

    thanks for this info, I have an Vaillant ecoTec Plus 835 and initially use the above post. it wouldnt power on so i think the “Blank” terminal to the left of the RT is No-Function. gave a good friend a call and he suggested to not use 230v RT but to use the 24v option instead.

    so my install was….

    (WARNING*** just to cover my a$$, i offer this as advice and if you are unsure, get it installed by someone who knows)

    5 core cable from the boiler to the Hive controller. Connected Blue to N, Brown to L, Green/Yellow to Earth, Grey to 1, Black to 3 to the Hive.
    Inside the boiler I connected Brown to L, Blue to N, Green/Yellow to Earth, Grey to 24v RT port 1 and Black to 24v RT port 2

    i have pics i need to upload later

    • DGinuk, 230v to 24v is not a good idea, hive will put out 100v to 230v so you will probably damage the main board!!!

      As it says in the manual “Connect the switched live supply with the terminal marked RT at X1 (beside the LNPE connections) then remove the link at X100 (do NOT connect 230 volt to any other terminal than the RT connection).”

      • Erm.I have to disagree, using the 24v to control is not going to damage mainboard as the switching pings are rated at 240v and all’s I’m doing using passing 24v instead. 240v power pin 1 and 2 DO NOT interact with 3,4 or 5 and the as long as 24v switching go’s to 24v there’s no issue, If I put 240v to 24v, then yes there would be issues. My good friend is a qualified electrician and his explanation made sense and the boilers been working happily so far, spent some time in loft (boilers in loft) insulating pipes and Ive not smelt and seen anything.

        • David,

          If i get you correctly then, you are using the hive contact relay to bridge the 24v thermostat connection on the boiler? This means you are passing 24v directly through the hive in place of 230v. Please confirm?

          I have found another post here that suggests the following as working:

  8. Hi Salti,

    Is it same procedures for Nest 3rd gen thermostat as well?Sorry, came across this website somehow ,I hope if it is the same procedures then I would save £100.Thank You

    • Ben, i have no experience with nest, but nest is 230v out so it should be!
      From what i can tell there are three types of interface eBus (Valliant protocol), 24v and 230v. 24v and 230v are same principle on different voltages and eBus is a serial message protocol.

      • Hi Salti,

        Sorry I am late to reply .I connected my My nest back in October as per above diagram .Without single issue, it’s in full working order and m enjoying of it everyday .II’d like to thank you for advice .This forum is really helpful for the people like me .Big thanks to you .

      • Perfect, thanks Salti.

        I do have a similar issue as the below in regards to the boiler still being dependant on the old thermostat, which I have to leave on full heating for the Hive system to control the heating. I’ve contacted Baxi but they weren’t able to advise. Do I need to somehow set the boiler to 24hr heating to remove the old thermostat from the process?

        Thanks
        Will

        • Will, it all depends on your setup? Is it integrated or does it link in to the same connections as above?
          If both thermostats are linked as above you can turn the old one off and it should work with just the hive.

          • Salti, The boiler has a wireless thermostat that connects to an “Optional integral timer” in the boiler and triggers the heating. I’m currently dependant on this for Hive to work. I can’t see anything in the installation instructions on how this would be disabled.
            Thanks

  9. Hi Salti,

    I hope you can help me as really confused on whether my boiler is compatible with the Hive system or not.

    I purchased 2 Hive v1 units and are both still boxed. One is for heating and one for heating and hot water. The boiler I have is Vaillant Aquaplus which has a built in hot water store which is what confused me as to which unit I will need. I was planning to updgrade to the hive2 if hive1 worked.

    Researched on the net but cannot find any info if anyone has installed the Hive on this particular boiler.

    I rang Vaillant and this woman in ‘support’ told me that my boiler doesnt have an ebus system so Hive or their vSmart wont work but not sure if I was told the correct info as I had opened the panel behind main controls and seen the live/neutral and also the loop on pins 3 and 4..

    Would you please be able to advise if possibly Hive would work and which Hive I would need ? Also if I did try to connect it as per L, N and 3 & 4 would it cause probs to my boiler if turns out to be incompatable?

    Thanks in advance.

    Jay

    • Jay, looking at the manual you should be good with the wiring:
      You only need the hive heating (but you can wire the heating and hot water and just not use the hot water function)
      Page 20 and 21 in the manual here use the wording “Terminals 3 and 4 are linked together when the boiler is supplied. If external controls are used, this link must beremoved, and the controls connected across terminals 3 and 4.”

      Good luck!

      • Hi,

        Many thanks for your reply. Sorry in my delayed reply but been so busy that not even had a chance to do anything yet but Vaillant said my boiler hasn’t got an eBus, so just a bit concerned before I open the packaging and try as above you have mentioned that Vaillant ones work off eBus(vaillant protocol) ?

        Thanks

        • Jay,
          The vSmart works on eBus so will not function with your boiler.
          The Hive works like a standard switch/relay/thermostat so will work with your boiler, just follow the wiring above.

          • Hi,

            Thats great.

            I will update you as soon as I have time and fitted it.

            Thank you so much.

  10. Hi, thanks for the info. Out of intrest if the boiler has a timer installed, as is the case with my valiant 824, how does this affect the wireless thermostat?

    Thanks

    Jon

    • Jon, the timer takes priority over the thermostat.
      The hive has a web interface for adjusting timings so i have moved to using this directly over the inbuilt timer on the 824 boiler.
      The setup is:
      1) Set the boiler timer up for 24hr heating schedule allowing the boiler to be on at any point of the day.
      Note: heating and hot water can be set on different schedules.
      2) The hive is then setup as the thermostat to turn the bolier on/off.
      3) The schedule for boiler on/off times is then setup through the hive web interface.

  11. Hi Everyone,
    Really useful posts here.
    Quick question regarding the wiring of a Hive to a Ecotec Plus 825.
    the wiring diagram above for the ecotec 824 is the same for my combi boiler.

    Does the Live/Neutral/Earth from the mains in to the boiler at terminals L/N/E just get extended to the Hive controller?

    cheers

    • Joe, Yes, it should be ok, if you turn the boiler off at the isolation switch the thermostat goes off too. This is how my old thermostat was wired so i just used the same!

  12. HI,

    just read the above can you help me i have an Ecotec plus 831. Also i notice the Heating Off (NC) is not connected to anything??

    Thanks

    • Stu, correct NC (Heating off) is not connected, otherwise follow the wiring below.
      > Remove the 24v loop.
      > Common and Live on the Hive go to the live on the Boiler.
      > Neutral on the Hive goes to the Neutral on the Boiler
      > Heating on on the Hive goes tot he RT input on the boiler.

  13. Hi, I fitted a Hive to my EcoPlus 831 (combi) last night, using the really useful wiring diagrams in this thread. However, my boilers own timer wasn’t working, and the Hive was a work-around suggested by my plumber. I assume I also need to somehow disconnect the boiler’s own timer/programmer ?
    As I removed the loop between 3 and 4 I thought ” this won’t be enough, as the Hive is only replacing this loop..” Any advice much appreciated.

  14. Further to my query a few minutes ago on my EcoTEC plus 831.. I realised that the Vaillant timeswitch could be removed.. it just pulls out.. and Wo! my Hive is now working! I think your forum is brilliant, helping people think things out 🙂

  15. Installed the Hive on a new Vaillant Ecotec plus 825 Combi. I had no other heating controls for the boiler
    For others people trying to do a similar job, I did exactly as this post and it is fully working.

    The L/N/E from the fused spur will be at the X1 terminal.

    wiring instructions.
    I used a 5 core cable bought from Screwfix

    – Hive Receiver to Boiler at X1
    L to L (brown)
    N to N (blue)
    1 to L (black)
    3 to RT 230v (grey)
    E thether to E (green/yellow)

    Took a while to get 3 wires in to the Live connection at x1, so take your time on it.

    Remove the looped wire at the RT 24V (x100)

    Also a similar thread on this post
    http://www.diynot.com/diy/threads/hive-2-on-vaillant-ecotec-plus-831.456243/

    then just follow the steps to connect the thermostat and internet controls

    Reply

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