Roof mounted modular air conditioning system (ACU) to supply 14kW cooling to ensure a cabin temperature of 23 - 26°C max in a 55°C ambient, provided the vehicle is thermally insulated. The aircon is a single evaporator design with a single 313cc compressor belt driven on the APU engine.

The APU/ACU system does not restrict the standard operational features of the vehicle in terms of firing and mobility. The system uses quick coupler connections so that the APU system can be removed without losing the refrigerant charge. The electrical connections, looms between the aircon, power units, electronic control panels and electrical control gear are designed and selected for operation in military environments, which include adverse temperatures as well as severe shock and vibration.

The aircon and power unit are equipped with custom designed electronic controllers capable of all control and safety functions. The controller activates subsystems as required to regulate the cabin temperature to the desired setting on the control panel (HMI). The system has a Bluetooth login interface for remote monitoring via a smartphone app and/or laptop.

Installation of the units requires minimal vehicle modifications. SME can also “repackage” this system in an enclosure which would fit the client’s requirements.