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5797 340 - 01
Vitoflex 300-RF Installation & Operating
General Information
Product Information
Viessmann solid-fuel boiler may only be installed and
serviced by trained personnel.
Steel wood-fired hot water heating boiler.
For operation primarily with modulating boiler water
temperatures in closed loop forced circulation hot water
heating systems. Under certain conditions, open loop
systems may also be considered. Contact Viessmann
for details.
WARNING
Exposing the boiler to pressures and temperatures in
excess of those listed will result in damages and will
render the warranty null and void.
Maximum allowable working pressure (water)...30 or 60 psi
Maximum water temperature…..250°F (120°C) (closed loop)
Maximum boiler temperature………210°F (99°C) (open loop)
This boiler does not require a flow switch.
Codes and standards
CSA B366.1-M91
Solid Fuel Fired Central Heating Appliances
CSA C22.2 NO. 3-M1988 (latest edition)
Electrical Features of Fuel Burning Equipment
UL2523
Solid Fuel-Fired Hydronic Heating Appliances, Water Heat-
ers and Boilers
CSA B365 (latest edition)
Installation Code for Solid Fuel Burning Appliances
and Equipment
ASME section IV boilers and pressure vessels