Gas condensing boiler
The Vitocrossal 300, type CR3B, is the top model amongst floorstanding gas condensing boilers, available from 787 to 1400 kW.
Gas condensing boiler
787 to 1400 kW
Standard seasonal efficiency [to DIN]
Up to 98 % (Hs) [gross cv]
Self-cleaning effect
Thanks to smooth stainless steel surface
High operational reliability and a long service life
Thanks to corrosion-resistant Inox-Crossal heat exchanger made from stainless steel
Clean combustion
Due to low combustion chamber loading and straight-through chamber design
Available with ELCO or Weishaupt pressure-jet gas burner
Available ex works
Easy manoeuvring
Thanks to split design
Two return connectors
For hydraulic connection optimised for condensing technology
Colour touchscreen
Easy to operate Vitotronic control unit with colour touchscreen
Integral LAN interface
For internet communication and integral WiFi for service interface
The Vitocrossal 300 type CR3B
gas condensing boiler
The Vitocrossal 300, type CR3B, is the top model amongst floorstanding gas condensing boilers, available from 787 to 1400 kW.
As a single boiler system, it is the most powerful condensing boiler in the comprehensive range offered by Viessmann. This makes it equally suitable for residential complexes, local heating networks, larger public and commercial buildings and industrial plants.
Advanced condensing technology
The design of the Inox-Crossal heat exchanger enables the Vitocrossal 300 to produce a higher output of up to 1400 kW, whilst retaining its modest dimensions and low weight. In addition, the split design of the heat exchanger module and combustion chamber module makes manoeuvring easier.
The highly effective heat transfer and the high condensation rate enable standard seasonal efficiencies [to DIN] of up to 98 % (Hs) [gross cv] to be achieved. These high levels of standard seasonal efficiency are the result of the countercurrent principle related to hot gas and boiler water, along with intensive turbulation of the hot gases as they pass through the heat exchanger.
The second return connector of the Vitocrossal 300 enables a hydraulic connection that is highly beneficial to the utilisation of condensing technology.
Vitocrossal 300 gas condensing boilers are available with factory-fitted ELCO or Weishaupt pressure-jet gas burners.
Convenient and highly capable Vitotronic control unit
The user friendly Vitotronic control unit with a large colour touchscreen enables quick commissioning using the assistant function. The boiler can be connected directly to the internet for remote monitoring via the integral LAN interface. The Vitosoft 300 service tool communicates directly via WiFi. Energy consumption can be clearly visualised on the control unit's energy cockpit.
Product details
- Output in kW (modulating)
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787 to 1400 kW. Type CR3B 11/2018: output stages: 787.0; 978.0; 1100.0; 1400.0 kW
- Standard seasonal efficiency [to DIN]
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Up to 98 % (Hs) [gross cv]
- Energy efficiency class
-
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- Fuel
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Natural gas E, LL and LPG
- Application area
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Gas heating in large residential buildings as well as in public and commercial premises, new build and modernisation projects
- Operation
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Easy to operate Vitotronic control unit with colour touchscreen. Integral LAN interface for internet communication and integral WiFi for service interface.
- DHW heating
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Additional DHW cylinder(s) required for high level of DHW convenience
- Additional features
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Available with ELCO or Weishaupt pressure-jet gas burner
- Product cross-section
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