Vitocal 350-G Pro

Viessmann Heat Pumps
Vitocal 350-G Pro
Large Heat Pumps

Vitocal 350-G Pro

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

  • Rated heating output: 27.2 to 197.0 kW
  • Hygienic DHW heating
  • Economical partial load characteristics
  • Flow temperatures up to 73 °C

Vitocal 350-G Pro

The Vitocal 350‑G Pro is a high‑performance large ground source heat pump designed for commercial, industrial, and large residential applications. It delivers high heating outputs with excellent efficiency, supports hygienic domestic hot water production, and is optimised for reliable, economical operation even under partial‑load conditions.

Thanks to its multi‑compressor design, PLC‑based Vitotronic control, and advanced communication interfaces, the Vitocal 350‑G Pro integrates seamlessly into complex heating and cooling systems, including building management systems (BMS).

Vitocal 350-G Pro

High Rated Heating Output

Brine/water operation: 27.2 to 197.0 kW Water/water operation: 37.2 to 265.2 kW Suitable for large buildings and high heat demands.

Hygienic Domestic Hot Water (DHW)

Heating High flow temperatures of up to 73 °C enable hygienic DHW preparation without additional heat generators.

Economical Partial‑Load Operation

Uses two or three compressors with equal rating, ensuring:
  • High efficiency at part load
  • Reduced cycling
  • Lower operating costs

High Energy Efficiency

Achieves COP values up to 4.4 (B0/W35) according to EN 14511, ensuring economical operation.

PLC‑Based Vitotronic Control System

Advanced control system with touchscreen interface and schematic diagrams for intuitive operation and clear system overview.

Remote Monitoring & Communication

Supports numerous data communication options, enabling:

Remote monitoring
Diagnostics
Performance optimization

BMS Integration

Modbus and BACnet communication interfaces allow seamless integration into building management systems.

Service‑Friendly Operation

Advanced diagnostics and remote access help reduce downtime and service costs.

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

It is a large ground source heat pump designed for commercial buildings, industrial facilities, and large residential projects requiring high heating outputs.

What heat sources can be used?

The system supports:

Brine/water operation (ground collectors or boreholes)
Water/water operation (groundwater systems)

Is it suitable for domestic hot water production?

Yes. Thanks to flow temperatures up to 73 °C, it enables hygienic DHW heating.

How does the system reduce electrical load during start‑up?

An electronic soft starter reduces starting current and minimizes stress on the electrical grid.

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