Chery Tiggo 5 (T21). Manual — part 325

31–

4

31

1. System composition

This model is equipped with two types of A/C: electrical A/C and automatic A/C. The A/C system consists
of the following four parts:
Air conditioning and distribution system: air mixing and distributor part of HVAC, inner/outer circulation
inlet, outlet and air filter.
Control system: A/C control panel assembly, inner/outer circulation damper motor, mode damper servo
motor, mix damper servo motor, blower, blower speed resistor, A/C pressure sensor, evaporator
temperature sensor, heater core sensor (for automatic A/C), room temperature sensor (for automatic A/C),
outside temperature sensor (for automatic A/C) and sun sensor.
Heating system: heater core assembly, heating inlet hose, heating outlet hose and engine cooling
circulation system.
Cooling system: compressor assembly, condenser assembly (w/receiver drier), expansion valve,
evaporator core assembly and A/C high/low pressure line.

2. Operation

Outside fresh air enters the air inlet filter assembly through the cowl top opening at the right side of
windshield base. Fresh air flows through the evaporator core and heater core, and then enters the vehicle
through the outlets on the instrument panel and the floor. The intake air volume can be adjusted by the
blower speed switch on the A/C control panel assembly. Turn on the compressor assembly by pressing the
A/C switch on the A/C control panel. The refrigerant is compressed by the compressor assembly and
converted into high temperature - high pressure gas, which is then condensed into high pressure liquid in
the condenser. Then the liquid is filtered and dried by the receiver drier and delivered to the expansion
valve and becomes low-pressure liquid through throttling and depressurization. Finally the liquid enters the
evaporator in vehicle, absorbs the heat and evaporates, thus refrigeration is achieved. A/C heating is
realized by the engine coolant circulation system. Heater core is the main component of the heating

Blower Motor

Expansion Valve

A/C Pressure Sensor

Evaporator

Condenser

Outside Air

Compressor

High-pressure
Gas

High-pressure
Liquid

Low-pressure
Liquid

Low-pressure
Gas

RT21310020

31–

5

31

system. With the engine running, engine coolant flows from the engine water pump to the heater core, the
heater core transmits the heat from engine coolant to the air that flows through the heater core. At this
time, the A/C switch is off. The air flowing through the heater core becomes hot wind through the heat
exchanger, thus providing heating. The temperature adjustment control mechanism can be controlled by
rotating the temperature adjustment knob, and the mix damper closes when temperature adjustment knob
is rotated counterclockwise to MAX COOL position. If the airflow does not flow through the heater core, the
heat transmission will not occur. When rotating the temperature adjustment knob clockwise from MAX
COOL position, the mix damper will open slowly, allowing air flows through the heater core. Most of the
airflow is heated in this way and the discharged air becomes warm. When the temperature adjustment
knob is rotated counterclockwise to MAX HOT position, the mix damper is opened fully and all the air flows
through the heat core, thus the air is heated. Mode buttons on the A/C control panel are used to direct
temperature adjusted air through selected outlets.

Specifications

Torque Specifications

Description

Torque (N·m)

A/C Control Panel Assembly Fixing Screw

2.5 ± 0.5

Coupling Bolt Between A/C High/Low Pressure Line
and Expansion Valve

7 ± 1

Fixing Nut Between HVAC Assembly and Instrument
Panel Crossmember Assembly

7 ± 1

Fixing Bolt Between HVAC Assembly and Instrument
Panel Crossmember Assembly

4 ± 1

Fixing Bolt Between HVAC Assembly and Body

7 ± 1

Air Inlet Assembly Right Fixing Screw

2.5 ± 0.5

Air Inlet Assembly Left Fixing Screw

2.5 ± 0.5

Air Inlet Assembly Rear Fixing Screw

2.5 ± 0.5

Left Foot Fan Shield Fixing Screw

2.5 ± 0.5

Right Foot Fan Shield Fixing Screw

2.5 ± 0.5

Coupling Bolt Between Expansion Valve and
Expansion Valve Mounting Pressure Plate

7 ± 1

Blower Case Assembly Upper Fixing Screw

2.5 ± 0.5

Blower Case Assembly Lower Fixing Screw

2.5 ± 0.5

Evaporator Case Assembly Fixing Screw

2.5 ± 0.5

Heater Core Line Pressure Plate Fixing Screw

2.5 ± 0.5

Heater Core Line Cover Plate Fixing Screw

2.5 ± 0.5

Mode Damper Adjustment Mechanism Set Fixing
Screw

2.5 ± 0.5

Coupling Nut Between A/C High/Low Pressure Line
Fixing Bracket and Body

7 ± 1

Fixing Bolt Between A/C Low Pressure Line and
Compressor Assembly

25 ± 2.5

Fixing Bolt Between A/C High Pressure Line and
Compressor Assembly

25 ± 2.5

31–

6

31

Refrigerant Charging Specification

Refrigerant Oil Charging Specifications

Fixing Nut Between A/C High Pressure Line I and
Condenser Assembly

7 ± 1

Fixing Nut Between A/C High Pressure Line II and
Condenser Assembly

7 ± 1

Coupling Bolt Between Rear Mounting Cushion
Assembly and Rear Mounting Bracket

70 ± 5

Coupling Nut Between Rear Mounting Cushion
Assembly and Rear Mounting Bracket

70 ± 5

Coupling Bolt Between Front Mounting Cushion
Assembly and Front Mounting Bracket

70 ± 5

Coupling Nut Between Front Mounting Cushion
Assembly and Front Mounting Bracket

70 ± 5

Coupling Bolt Between Right Mounting Cushion
Assembly and Right Mounting Bracket

80 ± 6

Coupling Nut Between Right Mounting Cushion
Assembly and Right Mounting Bracket

80 ± 6

Coupling Bolt Between Right Mounting Cushion
Assembly and Body

70 ± 5

Fixing Bolt Between Compressor Assembly and
Mounting Bracket

40 ± 5

Fixing Bolt Between Condenser Assembly and Tank
Upper Crossmember Fixing Bracket

7 ± 1

Description

Torque (N·m)

Description

Charging Capacity (g)

R134a Refrigerant

600 ± 10

Description

Charging Capacity (ml)

Compressor Assembly Replacement

It is necessary to pour out 50 ml of refrigerant oil

from the new compressor assembly

Condenser Replacement

50

Evaporator Replacement

50

A/C Line Replacement

10

31–

7

31

Tools

General Tools

Refrigerant Recycling Machine

Digital Multimeter

RCH0000046

RCH0000002