According to Directive 2006/40/EG, since 01.01.2017 only air conditioning Systems using coolant 1234yf may be installed in minibuses with up to eight seats plus driver. This applies to both original equipment and retrofits. The use of air conditioning units with coolant R134a is still permissible for all buses with more than 8 + 1 seats. The Spheros Minisphere rooftop unit is now available as a standard retrofit with the new coolant on Mercedes minibuses.
The Minisphere was first installed earlier this year as a 1234yf version on a MB-Sprinter Mobility 23 at OMNIplus Busworld Home Dortmund. Further vehicles have since been retrofitted.
With a remarkably low weight of 38 kg in the 10 kW version the Minisphere is 22 kg lighter than ist predecessor, the CC 145, and thus the most lightweight air conditioning solution for minibuses. Its low weight enables it to be quickly and easily installed, particularly as a retrofit. Its flat aerodynamic style harmonises optimally with the vehicle design. In additon, the unit comes with an optional heater and/or fresh air function (30% fresh air).
The Minisphere is controlled and operated with the specially developed SC 400 control element and features both an automatic and manual mode. The temperature can be set between 17° C and 24°C in stages of 0.5°C. Spheros supplies the complete unit with SC 400 control unit and TM16 compressor, including the motor bracket.
OMNIplus Busworld Home Dortmund has been purchasing Spheros product for many years now. For example, the Citysphere S air conditioning unit for the driver’s section has also been installed multiple times as a retrofit for city buses.