Replacing my Honeywell T6360B with a CMT901A

[nleeder]

Hi, A want to replace my existing thermostat (T6360B) with my programmable version CMT901A. The current thermostat has three wires going into it: Live (into terminal 1), neutral/Black (into terminal 2) and neutral/Grey (into terminal 3).
I am assuming (looking at the wiring diagrams) that the 1-3 terminals correspond to terminals A-C in the CMT901A. Is this correct?

 

[doitall]

In the old stat

1 is common.

2 is neutral.

3 is call.

in the new stat.

A, is common.

B, is call.

You don't need the neutral, so make it safe.

 

[nleeder]

Thanks that worked a treat and all up and working.