Ground source heat pump VWF 87/4 flexoTHERM - 5.3 kW, 3-phase, 400 V, includes sensoCOMFORT VRC 720 controller 0010044242

Vaillant flexoTHERM VWF 87/4 geothermal heat pump is an advanced solution for efficient heating and cooling of buildings, utilizing energy stored in the ground. The device is intended for both installers looking for reliable equipment and end customers wanting to reduce operating costs and minimize environmental impact. It comes with a sensoCOMFORT VRC 720 controller, providing precise control over the heating system.

Efficiency and application

The VWF 87/4 flexoTHERM heat pump operates with R410A refrigerant and is adapted to work with underfloor heating systems, radiators, and ventilation systems. Thanks to its high COP (up to 5.17 at 10/35°C) and heating power (9.94 kW at 10/35°C), it guarantees efficient heating even in difficult weather conditions. The ability to operate in active cooling mode is an additional benefit, providing thermal comfort in the summer. The device is dedicated to open-loop systems with groundwater, meaning it can be used in places with access to an appropriate geothermal source.

Construction and installation

The heat pump is characterized by a compact design (dimensions: 595 x 600 x 1183 mm) and a weight of 167 kg, which facilitates its transport and installation. The maximum working pressure of the upper and lower source circuits is 3 bar. The sensoCOMFORT VRC 720 controller enables remote control of the device, increasing user comfort and allowing for optimization of the heating system operation. It is important to remember to purchase a R1/2" safety valve, a R 1 1/2" air separator, and insulation for the R 1 1/2" air separator – these are essential elements for correct installation.

Key product features

• High efficiency: COP up to 5.17 ensures low operating costs.
• Cooling function: Provides thermal comfort all year round thanks to integrated active cooling.
• Remote control: sensoCOMFORT VRC 720 controller enables convenient management of the heating system.
• Versatility: Adapted to different heating systems (underfloor, radiators).
• Operation with groundwater: Ideal for installations with access to a geothermal source.
• Reliability: A product of the Vaillant brand, a synonym for quality and durability.
• COP at different temperatures: COP is 4.84 at a source temperature of 0/35°C, which proves the stable operation of the device in various climatic conditions.
• Heating power tailored to needs: Heating power at around 9 kW makes the heat pump suitable for single-family homes and smaller commercial buildings.