Replace 2-wire Honeywell CM707 zone stat

[Tractorman]

Hello. I have a two-zone heating set up, with each zone controlled by a 2-port zone valve (Honeywell V4043H by the looks of it), and each zone has a two-wire HoneywellCM707.

I would like to replace the CM707 in the master bedroom (for a mechanical stat that doesn;t click). In terms of compatibility, is this suitable: DRAYTON RTS8 COMBISTAT

The voltage across the live and return wires feeding the CM707 is high 240v AC. I don't know about the current amps - as I am waiting for a multimeter to measure AC (amps).

Would appreciate any thoughts. Thank you!


Zone valves: Honeywell V4043H
Boiler: Pottertron Assure Combi

 

[ShaunCorbs]

Problem is these days most of them click if it’s mechanical the only ones that don’t are digital eg buttons

 

[Tractorman_]

There is regular mechanical clicking and there is whatever goes on inside the Honeywell CM707! It's as loud as hell.

I've put the RTS8 on, 2-wire install.