AIR CONDITIONING SYSTEM


  1. CONSTRUCTION


    1. The drive portion of the stepping motor operates a screw valve to adjust the aperture to reduce the pressure and flow of the refrigerant.

    2. The coil of the stepping motor is encased in resin to ensure that it is waterproof.

  2. OPERATION


    1. According to the cycle mode, the electric expansion valve (cooling) and electric expansion valve (heating) is fully open, fully closed or in a state of controlled aperture.

      Operating Mode Electric Expansion Valve (Cooling) Electric Expansion Valve (Heating)
      Gas Injection Heat Pump Heater Fully Closed Controlled Aperture
      Heat Pump Heater Fully Closed Controlled Aperture
      Parallel Dehumidifying Controlled Aperture Controlled Aperture
      Series Dehumidifying Controlled Aperture Controlled Aperture
      Cooler Controlled Aperture Fully Open
      Defrosting Fully Closed Controlled Aperture