Ultra-thin Subway HVAC unit

LD29-A型 | LD29-A Model

LD29-A series are HVAC units designed for subway in north China and suitable for type B subway. Each car has 2 roof mount units. With cool air outlets and return air inlets at bottom of unit, the unit is connected with integrated control cabinet in electricity distribution room by electric connector. The return air openings of both the unit and the car are sealed by joint strips. Treated air is blown into car through vehicle air duct and air outlet.

With hermetic horizontal scroll compressor, R407c refrigerant and capillary throttling, each LD29-A has 2 independent cooling recycling units. The units can be energy regulation controlled due to indoor condition and load. Integrated control cabinet is used to achieve auto, manual and centralized control of the units.

All components of LD29 subway HVAC units: hermetic scroll compressor, evaporator, condenser, capillary tubes, gas-liquid separator, drier, filter, axial fans, centrifugal blowers form 2 independent cooling system. Electric regulator and filter are placed in return air inlet to adjust airflow of fresh air and return air as needed. All components are assembled in a chamber made of SUS304 stainless steel. Silver brazing is applied for tubes and components connection. The cool air outlet is placed in the front of the unit, and fresh air inlets are placed at 2 sides of the unit. Condensing water can be drained separately, or concentrate drained with connectors. The unit power cables are introduced into rare of the unit through connector.