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Air conditioning systems with refrigerant R1234yf - General information - Edition 07.2017
1.1.2
System overview - refrigerant circuit
with restrictor and reservoir
Note
♦ The arrows indicate the direction of coolant flow.
♦ The following diagram shows an example of a refrigerant cir‐
cuit with one evaporator.
♦ This refrigerant circuit layout is currently not planned for VW/
Audi vehicles.
♦ The layout of the refrigerant circuit is specific to the vehicle ⇒
Heating, air conditioning system; Rep. gr. 87 ; Refrigerant cir‐
cuit (vehicle-specific workshop manual).
HD = High-pressure side
ND = Low-pressure side
1 - Air conditioner compressor
regulating valve - N280-
2 - Air conditioner compressor
3 - Pulley
❑ Depending on the ver‐
sion, an air conditioning
system magnetic clutch
lk
- N25- is installed in the
belt pulley ⇒ Heating,
air conditioning system;
Rep. gr. 87 ; Refrigerant
circuit (vehicle-specific
workshop manual).
❑ Depending on the ver‐
sion there may be a
drive unit instead of the
belt pulley ⇒ Heating,
air conditioning system;
Rep. gr. 87 ; Refrigerant
circuit (vehicle-specific
workshop manual).
4 - High-pressure safety valve
5 - Condenser
6 - Refrigerant pressure send‐
er
❑ Vehicle-specific ver‐
sions ⇒ Heating, air
conditioning system;
Rep. gr. 87 ; Refrigerant
circuit (vehicle-specific
workshop manual).
7 - Service connection, high-
pressure side
❑ With sealing cap
8 - Restrictor
9 - Evaporator
❑ Evaporator in front heater and air conditioning unit (installed under dash panel)
32
Rep. gr.87 - Air conditioning system
GETth
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