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I see, thanks for the reply!

Anyone know what the difference between these two are? Just seen on the shop the arc say updated but no Info on what has changed? I just need a controller but unsure what is the latest one out?

Thanks for this,

I have bought the HR92 and bdr91 with hot water pack from yourself. So would I only need the main touch screen controller Now?

It’s hard to find information to understand this and others I have asked in forums have wired in both valves??

I tried to search but it’s saying that “s plan” is too simple a query.

Probably a popular question, but I have a grant vortex pro external oil boiler with the sealed system kit. I have 13 rads in total with 3 towel rads in the bathrooms ( I wasn’t planning on putting hr92’s On these)

The plumber ...