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Viessman Trimatik MC manual in English????

Hi All, does anyone have a pdf of the an english manual for the Viessman Trimatik MC please?

I have one at a place in France, it has all sorts of issues, I have no idea how to use the controls properly and I believe the local engineer is less than useful as he can't wait to leave and charge for another call out so I thought I'd start from scratch myself first.

Any link will be greatly appreciated