Upgrading to Hive, help needed

[nathanynysddu]

Hi, I'm currently wanting to upgrade my two thermostats to two Hive wireless thermostats that come with receivers and a hub. l've got a (relatively) new build with a Ideal H15 system boiler that has two thermostats (upstairs and downstairs) and a hot water tank upstairs. I've been trying to follow Hives install instructions but they don't tie in with what I have.

So my current wiring uses HW ON, CH1 ON AND CH2 ON. According to Hive I need wiring for Central Heating and Hot Water Off?? Am I missing something here or is there some change I need to make with the existing wiring to make it fit the Hive system?

I’ve attached pics of my current heating control wiring and Hives wiring diagram

 

[nathanynysddu]

Photo didn’t upload sorry

 

[CountryFan]

If your existing system doesn't use hot water off (y-plan) then the hive won't. Your existing system is likely a 3 channel, whereas Hive dual channel is simply this. So you would need an additional receiver to wire into the other heating on.

 

[nathanynysddu]

Sorry I should have mentioned, I have got another thermostat and receiver, am I right in thinking that it’s simply a case of looping the Live, Neutral and CH2 cable across to the 2nd receiver?

 

[RandomGrinch]

Sorry I should have mentioned, I have got another thermostat and receiver, am I right in thinking that it’s simply a case of looping the Live, Neutral and CH2 cable across to the 2nd receiver?

Not quite, the single channel Hive has a slightly different wiring layout to the dual channel.
You would loop across L, N and Earth

 

[RandomGrinch]

Sorry, the website is having issues at the mo.

You would loop across L, N and Earth.
Then you would connect the CH2 wire to terminal 3 and add a short link wire between L and terminal 1 on the Hive backplate.

 

[nathanynysddu]

Yeah that makes sense. Thank you both for your help, saved me a few quid getting someone to come and fit it for me

 

[stem]

As you have 3 channels in total: HW, CH1 and CH2. You will need:

1 x Dual Channel Hive for HW and CH1
1 x Single Channel Hive for CH2

I think you hint at having one with Hot Water control in your first post.

According to Hive I need wiring for Central Heating and Hot Water Off??

So, no worries if you already are aware of this and have it in hand, but you didn't mention it, so I thought I would.