Vitomax 300-LW M84A - low pressure boiler in a low NOₓ design


Take advantage of these benefits

  • Clean combustion with low nitrogen oxide emissions
  • Reliable heat transfer; straightforward hydraulic connection
  • Low radiation losses thanks to optimum thermal insulation
  • Vitocontrol control panel for all boiler-related control equipment
  • Approved in accordance with Pressure Equipment Directive 97/23/EC or Gas Appliances Directive 90/396/EEC


Clean combustion with low emissions

The Vitomax 300-LW M84A is a low pressure hot water boiler for permissible flow temperatures up to 120 °C, a permissible operating pressure of 6, 10 or 16 bar, and a heating output from 8.0 to 20.0 MW.

The three-pass boiler (low NOₓ series) features low combustion chamber loading with clean combustion and low nitrogen oxide emissions. In gas operation, NOx emissions are less than 70 mg/Nm³; in oil operation, less than 150 mg/Nm³.

Wide water galleries and large water content provide excellent natural circulation and reliable heat transfer.

No additional boiler pumps are required, so hydraulic connection is significantly easier.

Low pressure drop on the hot gas side thanks to optimum heating surface and smoke tube design.


Proven and reliable technology

The pre-assembled equipment for the 110 °C and 120 °C protection reduces the amount of engineering work and lowers costs.

Viessmann also offers other matching accessories:
For example, equipment for heat recovery or heat distribution and pressure maintaining systems.

Thanks to water-cooled burner entry points, the refractory linings require no drying processes, which significantly reduces commissioning times.