Pipe Length And The Elevation - Midea MS9A-05CR-QD0 Service Manual

6.3 Pipe length and the elevation

The pipe length and refrigerant amount:
Model
All
7k,9k,12k,18k(except
MS9A-18CR-PC4W(A))
MS9A-18CR-PC4W(A)
MS9A-21HR-QB6W
MS9A-22CR-QC0
MS9A-22CR-QB8
MA9A-24HR-QB4W
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.
.
Connective pipe length
Less than 5m
More than 5m
More than 5m
Model
7k,9k,12k
18k
21k,22k,24k
Air purging
Use vacuum pump
Use vacuum pump
Use vacuum pump
Standard
length
(m)
5
5
5
30
Additional amount of refrigerant
------------------
(Pipe length – 5) × 30g/m
(Pipe length – 5) × 60g/m
Max. Max.
Elevation Length
B (m) A (m)
5 10
8 15
10 20