Changing MYSON MEP2C to a Hive single channel receiver

[Alan Calder]

I have just moved into a new house which has a Worcester Greenstar 4000 combi boiler .it is ran via a MYSON MEP2C controller with a wall mounted Drayton thermostat.I would like to change the controller over to a single channel hive receiver.
The thermostat will obviously need removing but i am unsure about how to go about changing the controller to the hive receiver
The controller is currently wired as follows
N L HW off CH off HW on CH on
Blue brown live / / brown brown

The HW on and CH on are live when required

The hive receiver only has
N L 1 2 3 4

I am unsure where the HW on and the CH on wires go on the hive reciever and what to do with the wiring for the redundant Dryton thermostat .
I have attached pics of the thermostat and the Myson controller wiring plates

Any help would be most appreciated

 

[CountryFan]

The Hive has the same number of terminals. Are you sure it’s a combi, a bit odd to have both 3 and 4 in use for heating only. Although, 3 looks like it could be the live out to the room stat, but wouldn’t return on 4

 

[Alan Calder]

Its def a combi boiler .terminal 3 (brown) says its HW on while terminal 4(brown) says its CH on.
I am fairly sure one of them comes from the room stat but not sure how to verify

 

[stem]

The Greenstar 4000 Combi has a pre-heat facility [Assuming the version you have in Canada is the same as here in the UK] and the HW channel can be used to control the times when the pre-heat is operative.

So you can either swap the Myson MEP2C for a Two Channel Hive (which has exactly the same terminals as the Myson) and keep the pre-heat function, or install a Single Channel Hive and loose the pre-heat function.