Boss RF receiver portable thermostat heating controls

[georgemorris408]

Hi
I had to get a new unit, my old one was a Honeywell where there was a flex from the boiler with 5 wires , three to one terminal and two to another. These are marked grey wire N brown wire L and brown L and other terminal is A brown B Grey and C no wire. The instructions are rubbish and I phoned them up still no good but said only need 4 wires.
The labelling on the Boss is one terminal L and N, the other L1 LX L2
Can anyone tell me what goes where?
thanks

 

[Leesparkykent]

The old honeywell thermostat would have a permenant live and neutral. A&B would be acting as the switch.

 

[davesparks]

From the op it sounds like you have a cable with a brown core and two grey cores and a link wire between two of the terminals.
This is a little suspicious!