replacing Digistat RF2 abd SCR with Hive heating only

[Adel Iskander]

Hi,
Please find attached a photo shot of Digistat SCR current wiring.
A bit confusing because terminal 2 is not used at all.
How do I wire hive in this case.

 

[EFLImpudence]

Have you bought the single channel Hive?

 

[Adel Iskander]

Thanks for getting back so quick.
It is a single channel Hive.

 

[EFLImpudence]

Then - the Hive wiring is exactly the same.

However, you seem to have extra wires connected.
Do you still, perhaps, have an old programmer still in place but permanently set to Heating On - or an old thermostat similarly set or its wiring connected together?

 

[Adel Iskander]

I have wireless system, photo enclosed.
The SCR connected to Baxi combi boiler

 

[EFLImpudence]

Yes, but that is wireless.

I think that there might have been an old wired thermostat there before and they have just connected the wires together.

As it is, all you have to do is fit the Hive to the backplate (although you may want to use the new Hive backplate).


Whilst this will work as before, it is a bit of a bodge leaving unnecessary live wiring in place.
When you have removed the RF2 post a picture of any wires behind it and then you can reconfigure the backplate wiring and disconnect redundant wires.

 

[Adel Iskander]

Hi,
the wire behind the RF2 is dead. It has been disconnected over 13 years ago when we had the combi boiler professionally fitted .
I have enclosed 2 photos of back plate and the dead cable in the wall.

The system now up and running.
Thank you for your help, very much appreciated .

 

[EFLImpudence]