Viessmann Vitocal 350-HT PRO

High-temperature heat pump for waste heat use: flow temperature up to 90 °C, 56.6 – 144.9 kW (B0/W35), commercial applications.

Renewable heat for commercial use is determined by the need for high flow temperatures. As a series-produced heat pump, the Vitocal 350-HT PRO delivers flow temperatures of up to 90 °C and uses heat source temperatures of up to 50 °C. This makes it particularly suitable for using waste heat, for generating high temperatures for industrial and commercial processes, and for older district heating networks.

The easy-to-use PLC control is operated via a 5.7-inch colour touch display. In addition to LAN-based systems, Modbus and BACnet interfaces can be used, making the system accessible for remote monitoring and integration into building management systems.

Key features

• Rated heat output brine/water: 56.6 – 144.9 kW (B0/W35); water/water: 133.3 – 351.5 kW (W45/W90)
• COP: up to 4.3 at B0/W35 and up to 3.4 at W50/W90
• Maximum flow temperature 90 °C (no additional heater required)
• High permissible primary source temperature of up to 50 °C: optimal use of waste heat
• Sound power < 66 dB(A)
• 10 bar pressure rating for industrial applications
• Easy commissioning with a menu-guided wizard; factory hot test with function and performance tests
• Low service costs through automatic leak monitoring (gas detector)
• RCD system (Refrigerant Cycle Diagnostic) with electronic expansion valve (EEV) for high efficiency at every operating point
• COP booster through internal heat exchanger; reciprocating compressors, highly absorbent sound insulation and vibration decoupling

Models (BW 352.AHT)

• AHT058: 56.6 kW (B0/W35) – COP 4.3 – 2 compressors – 1077 kg
• AHT071: 72.4 kW – COP 4.3 – 2 compressors – 1195 kg
• AHT084: 83.2 kW – COP 4.2 – 2 compressors – 1251 kg
• AHT096: 96.6 kW – COP 4.2 – 2 compressors – 1357 kg
• AHT119: 116.8 kW – COP 4.1 – 2 compressors – 1426 kg
• AHT126: 124.8 kW – COP 4.2 – 3 compressors – 1779 kg
• AHT147: 144.9 kW – COP 4.2 – 3 compressors – 1865 kg

Values per EN 14511, B0/W35, 5 K spread. Dimensions: 2153 x 911 x 1650 mm (AHT058–AHT119) or 2816 x 911 x 1650 mm (AHT126, AHT147) (L x W x H).