The Pre-Conditioned Direct Expansion (DX) and Air Handler Units (AHU) units are offered from 20 Ton to 150 Ton electric powered, automatically controlled air conditioning units. These units provide ventilation, cooling, dehumidifying, filtering, and heating of air supplied to parked aircraft.

The Pre-Conditioned Air units are offered from 20 Ton to 150 Ton electric powered, self-contained, automatically controlled air conditioning units. These units provide ventilation, cooling, dehumidifying, filtering, and heating of air supplied to parked aircraft. These units are designed to provide comfortable cabin temperatures for passengers and crew during pre-flight, turn around, overnight parking, and maintenance operations.  

These units can be bridge mounted or stand mounted on the ground. A duct basket can be mounted in front of the bridge cross tube or in front of the stand mounted unit and holds one sets of 60 feet long; 14-inch diameter insulated flat hose. A VFD for the blower motor controls the airflow for narrow body aircraft to the mid-size aircraft types.

Control of the unit is attained by means of three push buttons. One button is used for of the two modes, Mid Mode, and Narrow Mode, and one button for Stop/Reset of the unit. These modes, and all of the components are controlled by a solid state Direct Digital Controller (DDC) with communication capability. This capability can be used to link other units together for central monitoring of the performance of the units.

A main power disconnect handle is provided on the outside on the control box to disconnect the power when the door is open for maintenance.  

The frame of the unit is made of stainless steel tubing and angles. The doors and access panels are made of aluminum. The electrical control box is also made of aluminum. The frame and panels are powder coated to further protect the unit from corrosion.

To control the noise level, there are no openings for fans, coils, etc. on the sides, front, or back of the unit. Openings are at the top and bottom only.

The evaporator coils are enclosed in a stainless steel plenum with a drain pan to collect the condensate water. A condensate pump is provided to remove the condensate to a proper disposal point.

Electric heating coils are provided to heat the aircraft type intended. The heating coils are heavy-duty fin tubular type.

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