Bitzer is extending the well-known Ecostar series even further with model versions of the LHV5E and eight of the LHV7E.
Both condensing units have an improved mini-channel condenser, which means they require less refrigerant charge while at the same time being more efficient than the current LHV6 models.
Bitzer's new Ecostar condensing units in the LHV5E series already fulfill the efficiency requirements of the EU Ecodesign Regulations which begin in July, 2016.
The state-of-the-art, low noise device complements the range of Ecostar condensing units for smaller cooling capacities.
The condensing units also have EC fans that are particularly energy efficient with the latest generation of active PFC monitoring.
Users can infinitely adjust their capacity and that of the internal Ecoline Varispeed compressor using a speed control that enables energy-optimized operation with low switch cycles. The new condensing units also boast reliable mileage and low maintenance.
Devices can be quickly installed on-site thanks to the control electronics already being wired in the factory, making them immediately ready to operate.
The Ecostar internal control automatically adjusts the compressor speed as well as the fan control to the actual cooling load – that is, the ambient temperature – making the total system extremely effective. The user can also adjust the characteristics for unusual applications via Bluetooth with the Bitzer's Electronics Service Tool (BEST).
Depending on the model, the condensing units are suitable for use with the refrigerants R134a, R404A, R507A, R407A, R407C and R407F.
Additional low-GWP refrigerants – for example R448A, R449A, R450A and R513A – are already stored in the firmware and are available upon request for the time being.
The robust and corrosion-resistant housing is designed for use outdoors, but its compact size means devices can also fit in smaller engine rooms.
The ECOSTAR condensing units’ optimized software provides a number of improvements: thanks to the revised emergency mode, the compressors and fans continue working at the same speed even if the sensors fail.
If the sensor failure only occurs sporadically – for example, due to a loose contact – the emergency mode is automatically overridden. When the sensors function normally again, the unit continues working independently.
Also, frequency ranges can be skipped without the need for a BEST converter thanks to the improved avoidance of resonance. The update now enables the external access to be configured: an optional alarm signal can be set that sounds whenever the external access is disabled.
In the new night mode, the firmware also limits the maximum speed of the compressor and the fans so that operating noise lies below 45 db(A) (–10°C/32°C/20°C R134a).