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Achieve exceptional operational savings with the Vitocrossal 300, CA3B, which
provides certified thermal efficiencies of 96.1%. The fully-modulating pre-mix
cylinder burners feature an impressive total turndown ratio of up to 16:1, allowing
the boiler to precisely match heating loads and reduce energy waste. Critical to its
efficiency and overall durability is its large boiler water content, which ranges from
108 to 227 USG depending on the model. This feature extends burner run time
and significantly reduces wasteful burner cycling, thereby increasing system
efficiency and overall durability. The Inox-Lamellar heat exchanger further
contributes to savings by having a low water pressure drop, which eliminates the
need for a dedicated boiler pump. The unit’s ability to operate with a low inlet gas
pressure of 4" W.C. (NG) also simplifies installation. Controlling the unit is the user-
friendly Vitotronic 300, GW6C control system, which can be used as a single boiler
control or a cascade primary/secondary control system.
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