6.3 Pipe length and the elevation
The pipe length and refrigerant amount:
Model Connective pipe length Air purging
Additional amount of
refrigerant
All Less than 5m Use vacuum pump ------------------
7k,9k,12k,16k,17k,18k More than 5m Use vacuum pump (Pipe length – 5) × 20g/m
21k,24k More than 5m Use vacuum pump (Pipe length – 5) × 40g/m
Model
Standard
length
(m)
Max.
Elevation
B (m)
Max.
Length
A (m)
7k,9k,12k,16k,17k 5 8 20
18k,21k,24k 5 10 25
Caution:
The capacity test is based on the standard length and the maximum permissive length is based on the
system reliability.
The oil trap should be installed per 5-7 meters.
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