DC Inverter U-match Series Cassette Type Unit
17
Hose with the valve pin
gauge manifold
pipe
pipe
VAC valve
Vacuum pump
Service port
Low pressure gauge
High pressure gauge
Gauge manifold kit
Fig.20
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 09~42k outdoor unit at the
factory, and for 48~60k outdoor unit refrigerant is charged for a piping length of 7.5m.
When the piping of 09~42k unit is longer than 7.5m or the piping of 48~60k unit is longer than
9.5m, additional charging is necessary.
For the additional amount, see Table 10.
Table 10
Model
Item
Standard Pipe Length
Unnecessary Charge
Pipe Length
Additional Refrigerant Amount
for Extra Pipe
09~18k
5m
≤
7.5m
30 g/m
24~42k
5m
≤
7.5m
60 g/m
48~60k
7.5m
≤
9.5m
60 g/m
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.
Oil bend
Oil bend
Indoor
Outdoor
6m
Fig.21
Summary of Contents for TKH12K3FI
Page 36: ......
