Trane TVR Pro CO Series Service Manual page 21

3 Refrigerant Flow Diagrams
8-16HP
Cooling operation
Figure 2-3.1: 8-16HP refrigerant flow during cooling operation
High temperature, high pressure gas
High temperature, high pressure liquid
Low temperature, low pressure
4
3
2
12
1
Oil return operation in cooling mode
Figure 2-3.2: 8-16HP refrigerant flow during oil return operation in cooling mode
8
EXVA
7
XX°C
6
5
T3
XX°C
T4
SV2
13
11
13
13
9
10
20
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