Viessmann Vitocal 350-G PRO

Flexible brine-to-water heat pump for commercial use: 76.7 – 192.6 kW (B0/W35), flow temperature up to 75 °C, frequency-controlled compressors.

The Vitocal 350-G PRO is a compact, monovalent brine-to-water heat pump for heating, cooling and domestic hot water. Ground, groundwater or outdoor air can be used as heat sources. With four types it is a flexible heating and cooling solution that meets the individual requirements of residential and commercial buildings as well as commercial and industrial operations.

Highly efficient reciprocating compressors with frequency-controlled output adjustment, combined with an electronic expansion valve (EEV), generate the required building heating or cooling load. The frequency-controlled regulation also ensures balanced compressor run times and thus a longer service life. The digital PLC control offers a high level of functionality; further system functions such as “active cooling” or “natural cooling” and control of up to four heating/cooling circuits are optionally available.

To cover peak load, an additional heat generator, such as a gas boiler, can be controlled; a lead/lag combination is also possible, where the second heat pump is controlled by the lead heat pump. The unit can be controlled by the higher-level Vitocontrol 200-M, integrated into a building management system (BMS) via potential-free contacts, or optionally controlled via Modbus/BACnet.

Key features

• With a 75 °C flow temperature very well suited to modernisation (from a brine inlet temperature of –1 °C)
• Monovalent heating, cooling and domestic hot water preparation; simultaneous heating and cooling
• Frequency-controlled, highly efficient reciprocating compressors
• Compact dimensions; refrigerant circuit decoupled from the base frame for minimal vibration transmission; sound-insulating casing
• Factory pre-installed including switching, control and safety equipment; fast installation and easy maintenance
• Victaulic coupling connection with flange adapter; separately supplied casing panels allow a narrower installation opening
• Pre-assembled frequency converters for floor or wall mounting
• System monitoring and online remote access to the heat pump control at any time; integrated diagnostic system
• BAFA funding

Models (BWR / BWS 352)

• C075: 76.7 kW – COP 3.74 – 1150 kg
• C100: 101.9 kW – COP 3.69 – 1250 kg
• C150: 144.6 kW – COP 3.66 – 1450 kg
• C210: 192.6 kW – COP 3.51 – 1650 kg

Rated values at B0/W35, 3/5 K spread, per EN 14511. Dimensions: 2367 x 911 x 1651 mm (L x W x H). Type C075: sound power level 67.5 dB(A), energy efficiency class A++.