Viessmann Gas Boilers – Vitocrossal 300

Commercial Boilers

Viessmann Gas Condensing Boilers: CA3B Series high-efficiency, gas-fired condensing boiler with Inox-Lamellar heat exchanger surface made of high-grade stainless steel.

Rated input: 2500 to 6000 MBH

  • Low emissions and quiet operation from fully-modulating Viessmann pre-mix cylinder burners (up to 3)
  • Total burner modulation turndown ratio of up to 16:1 precisely matches load per boiler
  • The fully assembled boiler simplifies installation and commissioning
  • Flexibility for venting through the sidewall or chimney applications and combustion air options of sealed combustion or room dependent
  • Common venting up to four boilers
  • Easy changeover from NG to LP with a simple turn of a key (Dual Fuel models)
  • Low inlet gas pressure capability as low as 4″ w.c. (NG) for compatibility with a range of supply pressures
  • Large water content extends the burner run time and reduces cycling
  • No dedicated boiler pump required due to extremely low water pressure drop through the heat exchanger
  • Vitotronic 300 GW6C can be used as a single boiler control or as a cascade primary/secondary control system
  • Seamless integration with building management systems