Top class condensing technology up to 314 kW with MatriX burner

The proven Vitocrossal 300 range (type CT3) has been extended by two additional sizes (170 and 314 kW). Up to 314 kW, the Vitocrossal 300 is available as a unit boiler with MatriX radiant burner. This enables Viessmann to offer the perfect solution for every demand – for apartment blocks, local heating networks and public or commercial buildings.

Highly effective heat transfer through the Inox-Crossal heating surfaces

The design of the Inox-Crossal heating surfaces allows the Vitocrossal condensing boilers to utilise the condensation energy in their hot gases with particular intensity. The second return connector of the Vitocrossal 300 enables a connection very beneficial to the utilisation of condensing technology.

Extremely clean combustion

Combination with the MatriX radiant burner ensures optimum clean combustion without compromise, plus low energy consumption and quiet operation.

Take advantage of these benefits:

• Gas condensing boiler 170 to 635 kW
• Standard efficiencies: up to 98 % (Hs) / 109 % (Hi)
• The stainless steel Inox-Crossal heating surface ensures high operational reliability and a long service life
• Inox-Crossal heating surface for a highly effective heat transfer and high condensation rate
• Self-cleaning effect through smooth stainless steel surface
• Clean combustion through low combustion chamber loading and straight-through design
• Sectional model for easy handling (from 187 kW)
• With MatriX radiant burner up to 314 kW for particularly quiet and environmentally-friendly operation, modulating down to 30%
• Two return connectors for water connections for optimum condensing use
• Permissible operating pressure up to 314 kW: 4 bar, 408 to 635 kW: 5.5 bar

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