Vitomax HW-EH

Vitomax HW-EH

Hybrid hot water boiler

We are pleased to introduce a hybrid boiler for industrial applications, which is a combination of a standard fire tube boiler and electric flange heaters.

Output range: 0.8 - 5.6 MW
H2 Readiness
Peak load compensation
Reduction of flue gas emissions

Your local Viessmann sales partner will provide you with individual advice.

Optimized startup process

Thanks to the use of electricity

H2 Readiness

Ensures proportional use of hydrogen

Compensation of load peaks and expansion of the normal range

Provide more efficient management in case of partial load reduction

Reduction of flue gas emissions

From COx or NOx

Higher efficiency

Compared to models that run solely on fossil fuels

Reducing the use of fossil fuels

This reduces overall operating costs.

High reliability of supply

If fossil fuels fail

Rapid availability of thermal energy

By retaining electrical heat

Easy heat retention

In this way, unnecessary cycling of the burner can be avoided.

Vitomax HW-EH / LW-EH: hybrid boilers for industrial hot water production

With Viessmann Vitomax high-pressure (HW-EH) and low-pressure (LW-EH) hot water boilers, you can contribute to the energy transition. This is because, in addition to fossil fuels, these hybrid boilers partially use electricity to generate heat. This “electricity to heat” principle allows for the economical use of resources while reducing flue gas emissions during hot water production. Furthermore, the seamless, interconnected components of Viessmann’s system solutions ensure reliable operation.

What is the difference between high and low pressure hot water boilers?

A key feature of the Viessmann Vitomax HW-EH/LW-EH hot water boilers is the hybrid operation of their forced-air burners and electric heating cartridges. This allows them to achieve higher efficiency than comparable models that use fossil fuels exclusively. This has both environmental and economic benefits. Lower consumption conserves limited resources and reduces CO2 and nitrogen oxide emissions. While the latter has a positive impact on the company’s carbon footprint and emissions tax, lower fossil fuel consumption significantly reduces operating costs. This also applies to the use of low-cost electricity, which can be drawn from the grid during production peaks or generated internally using appropriate technology. Electric operation promotes high supply reliability: if fossil fuels fail, this can be compensated proportionally. This reduces interruptions in production processes.

Use of alternative fuels

Further fossil fuel savings are possible through the use of biogenic fuels and hydrogen. This is because the Vitomax HW-EH/LW-EH hybrid boilers are 100% hydrogen-ready and can operate on both liquid and gaseous biogenic energy sources.

Optimized operation of Vitomax HW-EH / LW-EH hybrid boilers

Electricity is used to optimize the startup process. This prevents flue gas temperatures from dropping below the dew point. Once operating, the boiler switches to the primary fuel or starts. This also allows the use of energy sources with low flue gas dew points or whose condensate components would otherwise be harmful. The increased normal range and peak load compensation also allow for better control during partial load reductions. The electric heat retention of the Vitomax HW-EH/LW-EH hybrid boilers offers operational advantages. In addition to quickly delivering thermal energy, heat retention prevents unnecessary burner cycles. This prevents wear, extends component life, and reduces costs.

Technical specifications

Capacity: 1.2 – 8.4 t/h / ~ 0.8 – 5.6 MW
Fuel to electricity combustion ratio: ~ 4:1
Higher performance and pressure on demand

Heating cartridges allow for efficient use of electricity

Viessmann Vitomax HW-EH/LW-EH hybrid boilers feature up to two heating cartridges that convert electrical energy into heat. This heat, in turn, is used to produce hot water. The cartridge heaters are flange heaters and are connected to the boiler via a connector. Depending on requirements, the immersion depth can be up to 4.5 meters. Wall thicknesses of up to 2.1 millimeters ensure high resistance to corrosion and mechanical stress.

Submit an inquiry about Vitomax HW-EH/LW-EH hybrid boilers

Viessmann Vitomax hybrid boilers provide hot water production in climate-friendly and cost-effective industrial applications. Our specialists will be happy to answer all your questions and discuss your project requirements with you. Together, you will select the right system, even if you require a custom solution for your specific project.