Publicidad
Idiomas disponibles
Idiomas disponibles
vacuum pump. Meanwhile, the switch at the high pressure side of the manifold valve
assembly should be kept closed, otherwise evacuation would fail.
(5). The evacuation duration depends on the unit's capacity, generally, 15 minutes for the
09K/12K units, 20 minutes for the 18K units, 30 minutes for the 24/30/36K units, 45
minutes for the 42/48/60 units. And verify if the pressure gauge at the low pressure side
of the manifold valve assembly reads -1.0Mp (-75cmHg), if not, it indicates there is leak
somewhere. Then, close the switch fully and then stop the vacuum pump.
(6). Wait for some time to see if the system pressure can remain unchanged, 3 minutes for the
units less than 18K, 5 minutes for the 18K~24K units, 10 minutes for the units more than
42K. During this time, the reading of the pressure gauge at the low pressure side can not
be larger than 0.005Mp (0.38cmHg).
(7). Slightly open the liquid valve and let some refrigerant go to the connection pipe to balance
the pressure inside and outside of the connection pipe, so that air will not come into the
connection pipe when removing the hose. Note that the gas and liquid valve can be opened
fully only after the manifold valve assembly is removed.
(8). Place back the caps of the liquid valve, gas valve and also the service port.
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.
4.4.2 Additional Charge
Refrigerant suitable for a piping length of 5m is charged in the outdoor unit at the factory.
When the piping is longer than 7 m, additional charging is necessary.
For the additional amount, see Table 9.
Mode
When the height difference between the indoor unit and outdoor unit is larger than 10 meters,
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.
DC Inverter U-match Series Floor Ceiling Type Unit
gauge manifold
Item
Additional Refrigerant Amount for Extra Pipe
09~18K
24~60K
pipe
pipe
Hose with the valve pin
Fig.20
Table 9
30 g/m
60 g/m
16
Low pressure gauge
High pressure gauge
Gauge manifold kit
VAC valve
Service port
Vacuum pump
Publicidad
