Vitocal 300-G

Viessmann Light Commercial
Vitocal 300-G
Heat Pumps

Vitocal 300-G

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

  • Rated heating output: 21.2 to 42.8 kW
  • High performance due to two-stage design
  • Up to 428 kW as a cascade
  • Master/slave operation possible

Features

Wide Heating Output Range

  • Brine/water operation:
    • 21.2 to 42.8 kW (single‑stage)
    • 42.4 to 85.6 kW (two‑stage)
  • Water/water operation:
    • 28.1 to 58.9 kW (single‑stage)
    • 56.2 to 117.8 kW (two‑stage)

High Heating Outputs with Two‑Stage Technology

Two‑stage versions deliver higher outputs and improved efficiency under varying load conditions.

Cascade Operation up to 428 kW

Multiple units can be connected in a cascade circuit, enabling total heating outputs of up to 428 kW for large residential, commercial, or industrial applications.

Low Running Costs through High Efficiency

Achieves a COP up to 4.8 (B0/W35) according to EN 14511, ensuring efficient and economical operation.

Control / Integrations

Easy‑to‑Use Vitotronic Control Unit

Integrated Vitotronic control system with plain‑text and graphic display for intuitive operation and clear system overview.

Centralised System Management

Controls:

Space heating
Domestic hot water (DHW)
System coordination in single or cascade installations

Cascade & Multi‑Unit Control

Built‑in control logic for cascade systems, enabling efficient load sharing and redundancy.

Smart Grid Ready

Prepared for Smart Grid integration, supporting future energy management and demand‑based operation.

Photovoltaic Integration

Designed for optimised PV self‑consumption, allowing intelligent use of self‑generated electricity.

Technical Documents

Document Name Description Document Type Language Action
Technical Brochure Heat Pumps PDF English Download

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