Gas as a Heating Fuel
As a fuel, gas has a low emissions level and a high energy content. It is used not only in gas heating but also in other heating systems. Find out more about the characteristics of this fuel type in this section.
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Vitocrossal 300 type CU3A
Gas condensing boiler
Vitocrossal 300 type CU3A is a premium product among floor-standing gas condensing boilers.
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Nominal heating power: 2.6 - 60 kW
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Self-cleaning effect
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MatriX modulating gas burner
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Vitoconnect web interface
Your local AHI-Carrier sales partner will provide you with individual advice.
Gas condensing boiler
2.6 - 60 kW
Standard seasonal efficiency [according to DIN]
Up to 98% (Hs) [gross cv].
Self-cleaning effect
Thanks to the smooth stainless steel surface
MatriX modulating gas burner
Particularly quiet, economical and environmentally friendly operation with a wide modulation range
Easy-to-use Vitotronic control unit
With a normal text and graphic display
With web interface
Via Vitoconnect (accessories) for control and maintenance via AHI-Carrier apps
Energy efficiency class: A
Energy efficiency class: A
Gas condensing boiler Vitocrossal 300 type CU3A
Vitocrossal 300 type CU3A:
Floor-standing gas condensing boiler with advanced technology
Today, the use of condensing boilers in new buildings is more or less standard, as the boiler and heating system can be perfectly matched from the start. Condensing boilers provide the greatest benefit when installed in heating systems with low system temperatures. Condensing technology can save up to 30 percent on heating costs, even in retrofit projects.
The Vitocrossal 300 is a premium product among floor-standing gas condensing boilers. The combination of the Inox-Crossal heat exchanger and the MatriX gas burner represents a milestone in AHI-Carrier heating technology, where exceptional efficiency allows for savings on heating costs while minimizing harmful emissions.
Integrated range of solutions for Vitocrossal 300 type CU3A
Value-added services, digital services, connectivity and platforms
AHI-Carrier Heat
AHI-Carrier Wärme is our heating system rental service - ideal for those who want to enjoy superb heating comfort without having to buy a boiler.
Funding professional
The AHI-Carrier FörderProfi service streamlines and simplifies the entire subsidy process, from application to payment.
The ViCare app
The ViCare app provides intuitive heating control. Green for go - the user can see at a glance in the app whether their heating system is working as it should.
The ViGuide app
ViGuide is an application for sales partners. It has numerous functions for monitoring and managing systems in both detached and multi-family houses, as well as providing quick access to the technical service.
Vitoconnect
Vitoconnect is the interface between the boiler and the app - a prerequisite for controlling the heating system via smartphone and tablet. It also enables remote system maintenance for contractors via the Vitoguide app.
Features of the Vitocrossal 300 type CU3A
With a wide range of outputs (nominal heating output: from 2.6 to 60 kW), the Vitocrossal 300 gas condensing boiler is the right solution for any task, including heating in apartment buildings as well as in public and commercial premises.
Furthermore, it can operate in both open-flue and room-sealed modes. In particular, room-sealed mode allows for flexible installation of the condensing boiler inside a building.
The proven MatriX gas burner with Lambda Pro Control combustion controller automatically adjusts to various gas qualities and delivers consistently high seasonal efficiency (DIN standard) of up to 98 percent for both natural gas and liquefied petroleum gas. The integrated combustion controller for all gas types also offers cost savings by extending the interval between flue gas tests to three years. Additional advantages of the Vitocrossal 300 gas condensing boiler include excellent control and reliable heat transfer thanks to wide water galleries and a high water content.
The Inox-Crossal stainless steel heat exchanger provides ideal conditions for condensing technology. Its smooth surface allows condensate accumulated during the condensation process to drain easily. Combined with the smooth stainless steel surface, this creates a continuous self-cleaning effect, ensuring efficiency, extending service life, and reducing maintenance requirements.
Thanks to its vertical heat exchanger, the Vitocrossal 300 utilizes the condensation energy in hot gases with exceptional efficiency, achieving efficiency levels of up to 98 percent.
Convenient Vitotronic control unit
Contractors and users alike benefit from the easy-to-use Vitotronic control unit, as its menu structure is logical and clearly laid out, and the unit’s backlight provides good contrast and is easy to read. In case of doubt, a help function informs the user of the next steps. The graphical user interface can also display heating curves and solar output.
Product details
| Power in kW (modulating) |
2.6 – 60 kW. Type CU3A 1/2019: output stages: 2.6-13.0; 2.6-19.0; 5.2-26.0; 7.0-35.0; 12.0-45.0; from 12.0 to 60.0 kW. |
|---|---|
| Standard seasonal efficiency [according to DIN] |
Up to 98% (Hs) [gross cv]. |
| Energy efficiency class |
A |
| Fuel |
Natural gas and liquefied gas |
| Scope of application |
Gas heating in detached houses, semi-detached houses, apartment buildings, public and commercial premises, in new construction and modernization projects. |
| Operation |
Vitotronic 200 control unit with text and graphic display, internet-enabled via Vitoconnect (accessories) for operation and maintenance via AHI-Carrier apps |
| Hot water heating |
Additional DHW cylinder(s) required for high DHW convenience |
| Additional functions |
MatriX modulating gas burner with a wide modulation range |
| Section of the product |
|
ServiceConnect Commercial
The innovative service concept gives AHI-Carrier sales partners an additional advantage when working with commercial customers and local authorities thanks to comprehensive remote service.
- Increased operational reliability
- Convenient remote diagnostics
- Comprehensive error message management
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