Gree U-MATCH Series Service Manual page 76

Pressure gauge (Low-pressure)
Switch (Low-pressure)
Connection pipe (to indoor unit)
Liquid valve
Gas valve
Service port
Cap
Note: For the large-sized unit, it has the service port for both the gas valve and the liquid valve.
During evacuation, it is available to connect two hoses of the manifold valve assembly to two service
ports to quicken the evacuating speed.
3.1.7.2 Additional Charge
Refrigerant suitable for a piping length of 7.5m is charged in the outdoor unit at the factory.
When the piping is longer than 9.5 m, additional charging is necessary.
For the additional amount, see Table 3-2-3.
When the height difference between the indoor unit and outdoor unit is larger than 10 meters, an oil
bend should be employed for every 6 meters.
gauge manifold
Pressure gauge (Hi-pressure)
Switch (Hi-pressure)
Hose
Vacuum pump
Model Additional Refrigerant Amount for Extra
Item
24-60k
Oil bend
Indoor
U-Match Series DC Inverter Service Manual
Connection pipe
Cap
Service pipe
Cap
Hose with the valve pin
Figure 3-2-8
Table 3-2-3
Pipe
60g/m
Outdoor
Oil bend
Figure 3-2-9
73