Gas condensing boiler
Type CM3C, gas condensing boiler
Gas condensing boiler
87 to 311 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
Highly effective heat transfer
And high condensation rate
Clean combustion
Due to low combustion chamber loading and straight-through chamber design
MatriX cylinder burner
Particularly quiet and environmentally responsible operation with a modulation range down to 1:5
Open flue and room sealed operation
Selectable as required
All hydraulic connections can be made from above
For easy access
Colour touchscreen
Easy to operate Vitotronic control unit with colour touchscreen
Integral LAN interface
For internet communication and integral WiFi for service interface
Vitocrossal 300 type CM3C gas condensing unit
The Vitocrossal 300 (type CM3C) gas condensing boiler with an output of 87 to 311 kW sets a new benchmark for unit boilers. The tried and tested MatriX cylinder burner enables operation with gas types E, L and LL, and from 186 kW with LPG, as well as modulation down to 20 percent.
Extremely convenient to service
Servicing the Vitocrossal 300 is simplicity itself. The gas spring enables the front part of the boiler cover to be easily pivoted open. The side panels can be pushed back, allowing clear access to the MatriX cylinder burner.
Advanced condensing technology
The stainless steel Inox-Crossal heat exchanger has been designed to make the best use of condensing technology. This smooth stainless steel heat exchanger lets the condensate created by the condensing process simply run off downwards. This creates a permanent self-cleaning effect, which maximises the benefits of the condensing technology, thereby extending the service life and reducing the need for maintenance.
Robust burner with a long service life
Developed and manufactured in-house, MatriX cylinder burners and MatriX radiant burners enjoy a long service life, all thanks to the MatriX gauze.
Integral cascade function for up to eight units
The Vitocrossal 300 is the ideal boiler for apartment buildings and commercial enterprises. A cascade function for up to eight units is possible and is already built into the control unit. This means that a cascade consisting of 8 x 142 kW delivers a total output of 1136 kW. For multi boiler systems with two units, Viessmann supplies prefabricated system pipework and flue gas headers made from stainless steel.
The heating centre uses tried and tested condensing technology components from Viessmann, such as the Inox-Crossal heat exchanger and the MatriX cylinder burner or Matrix radiant burner. The boiler can be operated in either open flue or room sealed mode.
Vitotronic 200 – integral control unit for unit boilers
The user friendly Vitotronic control unit with a large colour touchscreen enables quick commissioning using the assistant function.
Integral internet interface
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.
Subsidy options
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Product details
- Output in kW (modulating)
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87 to 311 kW. Type CM3C 8/2017: output stages: 29.0–87.0; 38.0–115.0; 47.0–142.0; 37.0–186.0; 62.0–246.0; 62.0–311.0 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, L, LL; LPG from 186 kW
- Application area
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Gas heating in apartment 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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MatriX cylinder burner with a modulation range down to 1:5
- Product cross-section
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