Geothermal heat pump F1355 - 28 kW, 3-phase 3 x 400 V, twin-compressor, brine-to-water with modulated power 4-28 kW without tank 065436

Ground source heat pump NIBE F1355 is an advanced solution for efficient building heating, especially those with higher heat demand. The unit utilizes energy stored in the ground, offering an economical and ecological heat source. The twin-compressor design ensures reliability and adaptability to changing operating conditions.

Characteristics and application

The F1355 heat pump is designed to work with central heating systems and, thanks to the possibility of connecting an external domestic hot water tank, can also assist in preparing DHW. Modulated heating power in the range of 4-28 kW allows for precise adjustment of performance to current needs, which translates into lower operating costs. The device is particularly recommended for multi-family homes, religious buildings, commercial and industrial facilities. The ability to connect up to 8 F1355 units in a cascade allows achieving a heating power of up to 540 kW – an ideal solution for large facilities.

Construction and benefits for the installer and user

The twin-compressor design of the NIBE F1355 heat pump is key to its reliability and efficiency. Two hermetically sealed refrigeration modules allow separation of the functions of individual compressors, which increases resistance to failures and extends the life of the device. Pull-out refrigeration modules facilitate transport, installation and service – saving the installer time and costs. The built-in soft starter minimizes inrush currents during device start-up, protecting the electrical installation.

For the end user, the key advantage is high energy efficiency confirmed by A+++ energy class (at a supply temperature of 35°C) and a high SCOP coefficient (5.4 for a cold climate). This translates into significant savings in heating costs – up to 80% compared to traditional heating systems. The modern color display of the controller and the possibility of remote control via the NIBE Uplink application provide comfortable use and full control over the device. Additionally, the heat pump operates quietly (sound pressure level from 32 dB(A)), ensuring acoustic comfort in the building.

Technical specifications and compliance with standards

The F1355 heat pump operates with R407C refrigerant and requires a 400 V power supply. The device meets the stringent quality standards EHPA Q, HP Keymark and PreQurs, which guarantees its reliability and safety of use. The heating power at temperatures 10/35°C is 28 kW, and at 0/35°C – 20.77 kW. The device has a built-in USB port for software updates and the ability to cooperate with a building management system using the NIBE MODBUS 40 module.