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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 506 (Heater & Air Conditioning System) >> System Description >> Component Parts >> Refrigerant And Compressor Oil >> Refrigerant Cycle >> Refrigerant Flow

Refrigerant Flow

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
GNSAWIIA0054Z-054Courtesy of NISSAN NORTH AMERICA, INC.

1.

A/C compressor

2.

Pressure relief valve

3.

Liquid tank

4.

Refrigerant pressure sensor

5.

Condenser

6.

Expansion valve

7.

Evaporator

8.

Front blower motor

A.

High-pressure gas

B.

High-pressure liquid

C.

Low-pressure liquid

D.

Low-pressure gas

E.

Suction port

F.

Discharge port

G

Outside air

The refrigerant flows in the standard pattern, that is, through the compressor, the condenser with liquid tank, through the evaporator, and back to the compressor. The refrigerant evaporation through the evaporator coil is controlled by an externally equalized expansion valve, located inside the evaporator case.