Midea V6 Series Service Manual page 27

V6 VRF 50Hz
18/20/22HP
Cooling operation
Figure 2-3.9: 18/20/22 refrigerant flow during cooling operation
High temperature, high pressure gas
High temperature, high pressure liquid
Medium temperature, medium pressure gas
Low temperature, low pressure
11
E S C
6
5
4
3
2
2
T7C1
T7C2
1 1
Oil return operation in cooling mode
Figure 2-3.10: 18/20/22HP refrigerant flow during oil return operation in cooling mode
High temperature, high pressure gas
High temperature, high pressure liquid
Medium temperature, medium pressure gas
Low temperature, low pressure
11
E S C
6
5
4
3
2
2
T7C1 T7C2
1 1
26
11
10 10
7
T3
T4
SV5
14
8
9 15
SV9
11
10 10
7
T3
T4
SV5
14
8
9 15
SV9
13
8 8
EXVA EXVB
EXVC
12
16
13
8 8
EXVA
EXVB
EXVC
12
16
Unit on
Fan
Thermostat on
on
Filter
Filter
Normal control
Unit on
Fan
on Thermostat on
Filter
Filter
Normal control
Unit off
Fan
off
Filter
Filter
Closed
Unit on
Fan
Thermostat off
on
Filter
Filter
Closed
Unit on
Fan
Thermostat on
on
Filter
Filter
Normal control
Unit on
Fan
on
Thermostat on
Filter
Filter
Normal control
Unit off
Fan
off
Filter
Filter
300 steps
Unit on
Fan
Thermostat off
on
Filter
Filter
300 steps