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Best system for Greenstar 4000 GR4700iW

Hi all,

In UK and Ireland and have a combi boiler set up.

No separate cylinder - just straight forward combi boiler serving hot water on demand and one heating zone.

I purchased the UK/IE wireless extension kit and a few TRVs.

I then started reading up and discovered that this is not much use if I want to keep the Modulation feature of the boiler in play.

So my options are (fairly sure):

1. Replace wireless kit with wired.
2. Same thing but with Tado X.

So I want to be sure, if I go with the wired V3 kit am I safe to keep OT/BUS support or should I return everything and order the X kit.