The new semi-hermetic scroll compressors Bitzer for mobile air conditioning applications with R134a was developed in cooperation with Spheros for module air conditioning systems in buses. Due to its compact design and the stepless capacity control operating independently from the vehicle motor, the compressor is also suitable for compact air conditioning systems for driver’s cab cooling, such as in construction and farm machines or recreation vehicles.

The decisive technical features

❑ Semi-hermetic scroll compressor with integrated 26V/DC (other voltages upon request) permanent magnet motor

❑ Stepless capacity control operating independently from vehicle drive motor (Speed range 900 – 2100 rpm)

❑ Light aluminium construction with small overall height for optimum assembly in compact rooftop or front systems

❑ Very high COP – ideal for air conditioning and medium temperature applications

❑ Monitoring and feetback of basic operating parameters such as speed, motor temperature, voltage and amp draw

❑ State and error message via TMP connector

❑ Outside temperature measurement to ensure the minimum operating temperature

❑ Reduced maintenance due to semi-hermetic construction

Application limits

Compressor speed = 2000 rpm; operating voltage = 24–26 V.

t₀ - evaporating gas temperature, ºF;

t_c - condensing temperature, ºF;

∆t_0h - suction gas superheat, ºF.

Application limits for other speed ranges and tensions upon request.

Capacity control range

* corresponds to the maximum speed at 26 V. Speed depends on operating voltage.

Explanation of model designation

E C H 209 Y – 02G

Horizontal aluminium scroll compressor

E C H 209 Y – 02G

H for R134a

E C H 209 Y – 02G

Code for displacement

E C H 209 Y – 02G

Ester oil charge

E C H 209 Y – 02G

Motor code

Further information about design features and technical characteristics of semi-hermetic scroll compressors Bitzer ECH series with integrated speed control in brochure ESP-300.

Performance data for maximum speed based on 10 ºC K suction gas superheat, without liquid subcooling, at operating voltage 26 V for R134a

Learn the performance data, application limits, technical characteristics and detailed description of Semi-Hermetic screw compressors Bitzer