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Radiant Floor Heating/Viessmann Vitodens 200 model wb2 6-24C not producing domestic hot water


hi Morgan, you seem to be more knowledgeable about Viessmann than anyone else... would greatly appreciate your help! i have a newly installed Vitodens 200 model wb2 6-24C running one in-floor heating circuit through a mixing valve, and domestic hot water via the contained instantaneous exchanger. the domestic hot water is not consistently hot even when boiler is hot, like the circulation pump is not running or diverting solenoid valve is not energizing. from what i have read of other experiences with this model i suspect errors in control unit programming but no one gives the correct programming coding to solve. what are the correct coding address assignments needed for the 6-24C to produce domestic hot water with my layout?

Badger Boiler Vitodens
Badger Boiler Vitodens  
We are factory trained to install and service Viessmann boilers in Minnepolis but your question is really for the installing contractor. Since the Vitodens has outdoor reset and can be programmed for any hydronic system the "in-floor heating cirduit through a mixing valve make no sense to me.

If you need programming help contact us directly and we will put you on the schedule.

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Morgan M. Audetat


Radiant panel heating design, including floors and ceilings, European wall panels and snow melting for residential and light commercial buildings..............................................................-Master of Steam and Hot Water,City of Minneapolis....................................................--- Master Plumber, State of Minnesota...........


30 years..... Charter Board Member - Radiant Panel Association, former manufacturer of condensing boilers, former national distributor of radiant floor products, son and apprentice of mechanical & plumbing contractor. Current mechanical/plumbing contractor specializing in hydronic based, integrated HVAC systems. Radiant floor heating/cooling. Snow Melting. Condensing Boilers. Indirect water heaters. System design, consulting and technical training world-wide. Licensed contractor, designer, installer and consultant.

B.S. University WI 1981 CONTINUING EDUCATION: Viessmann Condensing boiler and Solar water heating certification 2010, N.D.S.U. Lead Worker RRP certification 2010, Knight condensing boiler certification 2009, Wrightsoft Manual J CAD certification 2009, RPA Designer & Installer Certification 2008, Nate Hydronic/Forced Air Certification 2008, Uponor/Wirsbo advanced design school certification 2007, Buderus Wall-hung certification 2007, Power Limited License (low voltage controls) 40 CE credits 2005, Basic Hydronic Certification IPEX & Northern Alberta Institute of Technology 1998, Charter Board Member - Radiant Panel Association 1994, Residential Off-Electric to Hydronic Conversion Heating School Canadian Hydronics Council 1994, B&G Little Red School House 1993, Rood Utilities (now Auburn Technical Institute) Oil Burner School 1993 ,Tekmar Controls residential and commercial 1993, Division Manager and Advanced Hydronic Seminar Instructor for the first Exclusively Hydronic Radiant Floor Distributor in the USA 1990, Hydronic Radiant Heating Association Workshop participant with Richard c. Bourne, PE spring 1988, Master Plumbing, Hydronic, Solar Course Red Rocks Community College 1987.

Awards and Honors
2009 System Showcase Award - Radiant Panel Association

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