written by Hoffman13 on 12/09/2017
I've installed over 30 of the Vitodens 100's and a few 200's (and viessman oil boilers) over the last 8 years. I have had very little installation issues or call back complaints. Recommend the low loss headers, and a quality air separator. Also check water quality and use cleaner/conditioners (authorized by Viessman) especially if this is a replacement. Setup or check combustion with quality certified equipment. Remember any product can have issues but many of my findings in the field come back to installation. Follow manufacturer recommendations and true of any brand, hire a company who has actually been to a class for the brand they are installing.
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