Windward, Rooftop

PZD is a rooftop air conditioning units for 6 to 14 m (school) bus, cooling capacity from 14000 to 32000 kcal/h. It uses aluminum micro channel condenser and copper tube and fin evaporator, having relay control and CAN control optional.

  • City Bus

  • Intercity Bus

  • Coach

  • School Bus

Technical Data sheet

Vehicle Length 6-7m 7-8m 8-9m 9-10m 10-11m 11-13m
Cooling Capacity(kcal/h) 14000 18000 22000 24000 28000 32000
Evaporator Airflow(m³/h) 3600 4000 4000 4000 6000 7000
Compressor Displacement(CC) 310 400 400 550 550 650
Size(mm) LxWxH 2388*1710*205 2481*1820*220 2640*1820*226 3010*1902*225 3285*1902*225
1. Compressor Brand: VALEO,BITZER OR BOCK                                                                                                 
2. Fan&Blower Option: Brush or Brushless, Local or International Brand  
3, Refrigerant: R134a
4, Aluminum micro channel condenser, copper tube and fin evaporator
5, Cover: SMC, housing: LFT-D, environmental friendly


  • Front windward design

    Micro-channel heat exchanger, 25% reduction in weight, 5% reduction in fuel comsumtion, heat exchange efficiency improved 20%, refrigerants charged 50% less, cooling capacity 10% more.

  • 100% DACROMET anti-corrosion coated coil

    800 hours salt spary test, suitable for harsh enviroment.

  •  LFT-D Structure

    Ultralight, consistent, recyclable and rigid.

  • Thermal insulation materials

    Environmentally friendly, antiseptic, odourless and flame-retardant(A-0).

  • Patented CAN control

    Modular design, digital communication;PWM control module, evaporator fan stepless speed regulation; smart condenser fan control, cooling on demand.

  • Proven performance

    Over 150,000 sets running globally since 2003.

    Keywords: bus ac, bus A/C, bus air conditioner, bus air conditioning.


    • Preparation

      First clean the rooftop surface, then put glue to install the sponge and rubber pad, later put glue with a glue gun around the sponge.

    • Evaporator and Condensor Installation

      Lift the condensor and evaporator to the top of the bus, install and connect the pipes and wiring harness, then fix the condesor and evaporator to the bus rooftop, put glue for sealants where needed.

    • Cover Installation

      Move the cover to the top of condensor and evaporator, check the position and drop the cover, fix screws and check the gap to follow requrements.

      Keywords: bus ac, bus A/C, bus air conditioner, bus air conditioning.


    • Bus Air Conditioner in South America 

    • Bus Air Conditioner in Asia  

    • Bus Air Conditioner in Africa  

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  • +86 13526569859

  • +86 371 6784 8720

  • No.8 Changchun Rd., High-Tech Zone Zhengzhou, 450001, P.R.China

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