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Viessmann launches propane ground-source heat pump compatible with PVT systems

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Viessmann launches propane ground-source heat pump compatible with PVT systems

German heating specialist Viessmann has launched the Vitocal 300-G intelligent energy (ie), a new inverter-driven brine-to-water heat pump designed for indoor installation in new and existing residential buildings.

The system uses propane (R290) as its refrigerant and features an integrated active safety system for refrigerant management.

The heat pump is available in three versions, designated 06, 12 and 16, with modulating heating capacity ranges of 1.8 kW to 9.3 kW, 3.2 kW to 12.2 kW, and 3.2 kW to 15.6 kW, respectively. Their nominal heating outputs at a brine inlet temperature of 0 C and a heating water temperature of 35 C (B0/W35) are 3.25 kW, 5.26 kW and 6.16 kW, with corresponding coefficients of performance (COPs) of 4.7, 5.0 and 5.0.

All three models measure 1,018 mm × 600 mm × 680 mm. The smallest version weighs 167 kg, while the two larger models weigh 185 kg each. The floor-standing units require an installation footprint of approximately 0.5 m2.

Viessmann said the system achieves an SCOP of up to 5.5 in low-temperature applications, with seasonal space-heating efficiency of up to 212% and an A+++ energy efficiency rating.

The heat pump delivers flow temperatures of up to 70 C, making it suitable for heating system retrofits as well as new installations, according to the manufacturer. The smallest model has a sound power level of 34 dB(A) under European Union Energy-related Products (ErP) testing conditions.

The system can also be connected to photovoltaic-thermal (PVT) collectors, which can serve as an alternative heat source to conventional geothermal boreholes while simultaneously generating electricity.


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