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- 288
Am fitting one of these next week. Made a start Friday and hung it on wall.
In the box you get a TMV blending valve and a Caleffi branded combi bloc for the unvented side of things.
The book tells you nothing!
I have sussed it I think but just have one question. The combi bloc has a 15mm connection I am not sure what for? I have fitted loads of these in the past but have never had the extra 15mm connection?
Any ideas?
Cheers