Vitomax HW: A high pressure hot water boiler for industrial and commercial applications
Due to their design and equipment level, Vitomax industrial/commercial boilers deliver the best possible conditions for meeting individual customer requirements in a broad range of applications. The detailed design of the Vitomax boilers and the company's vast experience in building industrial boilers ensure superior quality, high operational reliability and a long service life.
The comprehensive Vitomax product range from Viessmann includes hot water boilers up to 21 MW.
Our Vitomax high pressure hot water boilers are suited to a wide range of applications including commercial, industrial, new build and modernisation projects.
The benefits at a glance:
- Clean combustion with low nitrogen oxide emissions; designed to meet future limits
- Reliable heat transfer; straightforward hydraulic connection for fast commissioning
- Low radiation losses thanks to optimum thermal insulation
- Vitocontrol control panel for all boiler-related control equipment
- Approved according to Pressure Equipment Directive 97/23/EC

Viessmann offers everything from a single source
No minimum heating water flow rate is required for the Vitomax. Wide water galleries and large water content ensure excellent natural circulation, which makes hydraulic connection easier.
Low pressure drop on the hot gas side thanks to optimum heating surface and smoke tube design.
Time is money
Package systems are particularly applicable to industrial and commercial enterprises, where new heating centres often have to be operational as quickly as possible, so that heat for production can be supplied on time.
Thanks to water-cooled burner entry points, the refractory linings require no drying processes, which significantly reduces commissioning times.
Additionally required components for systems can be adapted by Viessmann, if necessary, to the system user's specification.


Vitomax HW: Product Variants
Type | Description | Heating Output |
---|---|---|
M70 | High pressure hot water boiler for permissible flow temperatures up to 210 °C | 0.35 - 2.6 MW |
M90 | High pressure, low NOx hot water boiler for permissible flow temperatures above 210 °C | 0.65 - 2.6 MW |
M72 | High pressure hot water boiler for permissible flow temperatures up to 200 °C | 2.3 - 8.9 MW |
M92 | High pressure, low NOx hot water boiler for permissible flow temperatures up to 200 °C | |
M76 | High pressure hot water boiler for permissible flow temperatures above 210 °C | 3.3 -20.7 MW |
M96 | High pressure, low NOx hot water boiler for permissible flow temperatures above 210 °C | |
M74 | High pressure hot water boiler for permissible flow temperatures up to 200 °C | 9.9 - 21.0 MW |
M94 | High pressure, low NOx hot water boiler for permissible flow temperatures up to 200 °C |