System Overview - Refrigerant Circuit With Electrically-Driven A/C Compressor (With Or Without Battery Cooling Module)

• The following illustration shows a refrigerant circuit with an expansion valve and a second evaporator for cooling the battery and an inner heat exchanger as an example.
• The layout of the refrigerant circuit is vehicle-specific. Refer to Refrigerant Circuit (vehicle-specific service information).

The arrows indicate the refrigerant flow direction.

HD = high pressure side

ND = low pressure side

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. A/C Compressor
2. Pressure Relief Valve
3. Condenser
   • with receiver/dryer and dryer cartridge
4. Receiver/Dryer
   • Condenser stock
5. Refrigerant Pressure Sensor
   • Vehicle-specific version. Refer to Refrigerant Circuit .
6. Service Connection - High Pressure Side
   • with closure cap
   • with Evacuating and Charging Valve
7. Refrigerant line with inner heat exchanger
8. Refrigerant Shut-Off Valve
   • There are different names. Refer to Refrigerant Circuit .
   • only for vehicles with an battery cooling module
9. Expansion Valve
   • On the evaporator in the heater and A/C unit
10. Front Evaporator
    • Heater and A/C Unit Evaporator
11. Expansion Valve with Shut-Off Valve
    • There are different names. Refer to Refrigerant Circuit .
    • On the evaporator in the battery cooling module
    • only for vehicles with an battery cooling module
12. Evaporator
    • Evaporator in Battery Cooling Module
13. Service Connection - Low Pressure Side
    • with closure cap
    • with Evacuating and Charging Valve