Vitocal 350-HT Pro

Viessmann Heat Pumps
Vitocal 350-HT Pro
Large Heat Pumps

Vitocal 350-HT Pro

High temperature brine/water heat pump with the option of water/water operation with intermediate brine circuit.

  • Rated heating output: 56.6 to 351.5 kW
  • Flow temperatures up to 90 °C
  • Low running costs with maximum efficiency
  • PLC control unit with colour touchscreen

Vitocal 350-HT Pro

The Vitocal 350‑HT Pro is a large, high‑temperature heat pump specifically developed for the commercial and industrial sector, with a strong focus on the utilisation of waste heat and renewable energy sources.

Capable of delivering flow temperatures up to 90 °C, the Vitocal 350‑HT Pro is ideal for applications where high temperature levels are required, such as industrial processes, district heating, and the replacement of fossil‑fuel boilers. Its robust design, high pressure rating, and advanced control system ensure maximum efficiency, reliability, and low operating costs.

Vitocal 350-HT Pro

High Rated Heating Output

Brine/water operation: 56.6 to 144.9 kW (B0/W35) Water/water operation: 133.3 to 351.5 kW (W45/W90)

Very High Flow Temperatures

Up to 90 °C, making it especially suitable for:
  • waste heat utilization
  • high‑temperature heating networks
  • industrial and commercial applications

Optimised Use of Waste Heat

Supports primary source temperatures up to 45 °C, enabling efficient recovery and reuse of industrial waste heat.

Maximum Efficiency with Low Running Costs

Achieved through an innovative refrigerant cycle diagnostic system combined with an electronic expansion valve, ensuring optimum performance at all operating points.

Low Service Costs

Automatic leakage monitoring reduces maintenance effort and increases operational safety.

Low Sound Power

Sound power level < 66 dB(A), suitable for installation in technical rooms and noise‑sensitive environments.

PLC Control System with Touchscreen

Intuitive operation via touchscreen interface and schematic system diagrams, providing a clear overview of system status and parameters.

Remote Monitoring & Communication

Supports numerous data communication options, enabling:

Remote monitoring
Fault diagnostics
Performance optimization

Integration into Complex Systems

Designed for seamless integration into:

Industrial heating systems
District heating networks
Waste heat recovery systems
Multi‑heat‑pump installations

High Operational Transparency

Real‑time monitoring of temperatures, pressures, and operating states improves system control and reliability.

Document Name Description Document Type Language Action
Technology brochure Heat pumps up to 600 kW PDF English Download
What is the Vitocal 350‑HT Pro used for?

It is a large high‑temperature heat pump designed for commercial and industrial applications, particularly where waste heat recovery and high flow temperatures are required.

What makes this heat pump different from standard models?

Its ability to deliver flow temperatures up to 90 °C, combined with high pressure resistance and waste‑heat utilization, sets it apart from conventional heat pumps.

What heat sources can be used?

The system supports:

Brine/water operation (e.g. geothermal or process heat)
Water/water operation (e.g. groundwater or industrial waste heat)

Is the system suitable for industrial environments?

Yes. With a 10 bar pressure rating, robust construction, and automatic leakage monitoring, it is specifically designed for industrial use.

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