Danfoss Dual System WB12 to Hive

[LukeJohn]

Hi everyone
I am in need of some help, at the weekend I purchased the Hive (heating and hot water) controller, successfully fitted this downstairs to control downstairs heating and hot water. House built in 2016 has the separate heating controller for upstairs.

This thermostat in the bedroom is controlled but a 2 wires and the controller is battery powered, so I believe there is no power to control the new hive receiver.

I would like the upstairs receiver it put hidden ie in the airing cupboard, but if I can replace the current thermostat with it I would be just as happy.

If it does need to be placed in the airing cupboard, this is where I need some help, I understand the hive receiver needs power and then the on/off wires which currently go to the bedroom thermostat, but I just don't know which ones to power it and give it power.

Any help would be amazing.

Thanks in advance

Thanks Luke

 

[stem]

As you have figured, the existing thermostat is battery operated so doesn't need a 230V supply.

It's difficult to see the wiring centre properly in your photo. Unfortunately there is no fixed position of the wires in the wiring centre, it's down to the preferences of the initial installer. So, to give a definite answer it's usually necessary to know what is connected to the other ends of each of the wires. However,......

To install the Hive Receiver Next to the Wiring Centre
....... if you have a two port motorised valve controlling the upstairs heating then convention dictates that the motorised valves' grey wire is connected to a permanent live, and its blue wire to a neutral. After checking with a multimeter, if this is the case, they can then be used for the N & L of the Hive receiver. This Hive should be a single channel version.

Next, trace the wires from the existing room thermostat back to their origin at the wiring centre. Note where they are connected and then remove the old thermostat cable completely from the wiring centre. The wiring centre terminal that the thermostat brown wire was connected to, now should be connected to Hive 1 (COMMON) and the terminal where the black wire was removed from is connected to Hive 3 (NO)

That's it in this case, no additional link is required between L and 1.

Alternative Method - Replaces old Room Thermostat
If you have an unused spare (grey?) wire in the existing room thermostat cable and can find the other end of it at the wiring centre, that can be connected to a N [eg where the blue wire from the motorised valve is connected] then the new Hive receiver (single channel version) can go where the existing room thermostat is located. The brown wire would go to L, the 'spare' wire you have just connected to N, and the black wire to Hive 3 (NO) This time you do need to add a link between L and 1 (COMMON)