Hive multizone into 2 zone wiring centre

[Granty1984]

Hi all, after a bit of help if possible please.

Moved into a new build and have 3 floors with an ESI thermostat on ground floor which controls the ground floorand ESI thermostat on 2nd floor which controls 1st and 2nd floor.

Boiler is a Logik ideal ESP1 35 Combi and has the 2zone power supply/wiring centre ESRTP6CPS2Z under the bath (very strange I know). I've purchased 2 Hive thermostats and receivers (single channel/heating only) and have wired them into the wiring centre via LNE and same into the receiver so have power going into these I've wired them through to the bedroom wardrobe so I have easy access to them without having to remove the bath panel if they lose signal or need resetting etc.

I've wired the receivers with black core going into the C (common) on the receiver and the grey core going into number 3 (heating on) on the receivers but my question is where do I wire them into the wiring centre?

I added pics to give more of an idea where the current thermostats are wired into.

 

[RandomGrinch]

There's a lot of information here, from when we reverse engineered one of these wiring centres...

Replacing ESI ESRTP6C with Nest Thermostat (3rd Gen) - Dual Zone

Hi, I am planning on replacing the two thermostats in my new build house that control the dual zone central heating. The thermostats are ESI ESRTP6C are connected to a wiring system that is connected to the combi boiler and two valves. The thermostats have the following wires connected: +5V...

www.diynot.com

The existing ESI stats are (extra) low voltage. Please ensure that any wires from the thermostat connector side of the board, don't come near to the mains voltage wiring.
The ESI calls to heat when the RH terminal connects to 0V. It is held off, when RH is connected to 5V.

So with a single Channel Hive...
DO NOT put any link wires between L and any another terminal.
RH (black wire) would connect to Hive terminal 1 (Common)
0V (Grey wire) would connect to Hive terminal 3 (NO)
+5V (Brown wire) would connect to Hive terminal 2 (NC)

 

[Granty1984]

My brown wire (live) is wired into the live in the wiring centre to provide power to the receiver.

 

[RandomGrinch]

My brown wire (live) is wired into the live in the wiring centre to provide power to the receiver.

You need a different cable for these 'low' voltage connections, than the one powering the Hive receiver.
Can you post a picture of how you have attempted to connect up the Hive?

 

[Granty1984]

Excuse the rubbish drawing

 

[Granty1984]

So should I run an extra core from the hive 2 port to the +V port in the wiring centre? So in total I have 6 cores running through?

 

[RandomGrinch]

Excuse the rubbish drawing
View attachment 364823

Ok, so (taking post #1 into account) you've used a 5 core cable to connect the receiver, with a grey and black connected to terminals 1 and 3 of the Hive?

If so, try connecting 0V to Hive terminal 3 and RH to Hive terminal 1 - this should work - if it doesn't, the 5V connection may be needed to stop the output floating.

Also, ensure your wiring is neat and tidy, we really don't want any stray copper wires joining the 'low' and mains voltage sides.

 

[Granty1984]

Ok, so (taking post #1 into account) you've used a 5 core cable to connect the receiver, with a grey and black connected to terminals 1 and 3 of the Hive?

If so, try connecting 0V to Hive terminal 3 and RH to Hive terminal 1 - this should work - if it doesn't, the 5V connection may be needed to stop the output floating.

Also, ensure your wiring is neat and tidy, we really don't want any stray copper wires joining the 'low' and mains voltage sides.

Spot on. Thank you so much works a treat.