4 Wire Honeywell zone valve overview

[@jankurzak6941]

Very well presented, Thanks

[@nijamuddin6068]

Thanks

[@jasoncai6299]

Normally, transf-R -->Thermalstat-R --> Therstat-W --> ZV-Yellow1 --> ZV-Yellow2 --> transf-C
Anyway, it does not matter, working is fine.

[@HomeownerDIY]

Thanks for your comment, the way you stated to wire the zone valves is how l did it when l rewired the system.