hive dual receiver to combi boiler

[Tommmmm]

Hi i bought hive dual channel for my combi biler (POTTERON PROMAX COMBI 33 HE A) by mistake. At the moment i have centaurstst 7. Could you please advice how to connect the hive dual to the combi biler. see pictures

Thanks

 

[Deleted member 267285]

Are you not able to return it for a single channel?

 

[flameport]

Possible, but it will be necessary to identify the wiring connections at the boiler and most likely make some changes.
Hive receiver requires minimum of 3 wires + earth, your existing thermostat only has 2 - an additional wire is present but not connected.

 

[Tommmmm]

I Can’t return.
Flameport do you have any idea what is that 3th cable for?

 

[Tommmmm]

Hi

I have som more info. please see photos
I hope somebody can help me with this.

Thanks

 

[Tommmmm]

hive dual wiring

 

[Deleted member 267285]

I think you would be better removing the Horstmann wiring, and then, what you may need is the following:

Live to Hive
Neutral to Hive
Heating on (switched live on boiler room stat connection)
Remove permanent live out from boiler room thermostat connection
Fit any earths if required

I think a few other such as flameport will know the answer properly.

 

[flameport]

The wires needed at the boiler are the blue, grey, black and green/yellow.
However there is another problem - the 5 core flex connected to the boiler is NOT the same cable that's connected to the existing thermostat.
There must be another junction box or similar where those two cables are joined - you will need to locate that and see how the two are connected together.

 

[Deleted member 267285]

To answer flameports question, Check the fused spur, quite often joined in there.

 

[Tommmmm]

The wires needed at the boiler are the blue, grey, black and green/yellow.
However there is another problem - the 5 core flex connected to the boiler is NOT the same cable that's connected to the existing thermostat.
There must be another junction box or similar where those two cables are joined - you will need to locate that and see how the two are connected together.

I can connect straight to the boiler because it is only receiver. This way is better for me. And the I can instal the wireless thermostat downstairs. Can you explain witch cable going where.

 

[flameport]

Hive Earth - Boiler Earth
Hive N - Boiler N (blue)
Hive L - Boiler 2 (grey)
Hive 4 - Boiler 1 (black)
Other terminals not used.

The existing grey and black wires at the boiler must be disconnected, along with all of the wiring to the existing thermostat. This means finding out where the other ends of all the wiring is and disconnecting it at both ends, ideally removing the wiring completely.

 

[Tommmmm]

Hive Earth - Boiler Earth
Hive N - Boiler N (blue)
Hive L - Boiler 2 (grey)
Hive 4 - Boiler 1 (black)
Other terminals not used.

The existing grey and black wires at the boiler must be disconnected, along with all of the wiring to the existing thermostat. This means finding out where the other ends of all the wiring is and disconnecting it at both ends, ideally removing the wiring completely.

Flameport thanks

Everything working fine
Just need to change the hub for the new one because I bought second hand and been registered already.

 

[Tommmmm]

Do you know what is the diferrent between them two?
at the moment i have that: hive hub v2 new
if i buy that other one will be ok?