Replace Honeywell Receiver with HIVE

[Red Chilli]

Hi,

I'm in the process of replacing my Honeywell wireless thermostat with a HIVE, however the existing receiver (Honeywell RM900) does not appear to be wired up according to the instructions leaving me a little confused. Could anyone confirm the wiring for the new HIVE receiver please? The receiver is connected to a Vaillant combi boiler.

RM900 Wiring Diagram

Existing Wiring

HIVE wiring diagram

My thoughts are:
Blue wire to N
Fat white wire to L (Permanent live)
A link wire from L to 1 (Common)
Orange to 2 (Heating off)
Grey to 3 (Heating On)

(The thin white wire isn't connected to anything and neither is the earth)

I'm just wanting to check that I'm correct before going ahead?

Thanks

 

[flameport]

Blue & white -> N&L as they are now.
orange & grey -> 1&3.
No link required.

 

[Red Chilli]

Thanks flameport, can you just confirm that the orange goes into number 1 (common) on the HIVE and not into number 2.

 

[flameport]

2 is heating off, and is not used. It's the same as C on the existing device.

 

[Red Chilli]

Ok, thank you