Installation of Indoor, Outdoor Unit
Refrigerant charge
8
Room Air Conditioner
The calculation of the additional charge should be taken in account for the length of extra pipe.
• Total main pipe(A+B+C) = 30m
• Each branch pipe
a = 10m
b = 8m
c = 5m
d = 3m
e = 10m
✽
Note : If additional charge value after calculation comes out to be negative, then do not
consider additional charge.
❖
Additional Charge
= (30-10) x 50
+ ((10+8+5+3+10)-35) x 25
= 1000 + 25 = 1025g
A
ex) A7UW428FA0
A
B
C
a
b
c
7k
9k
9k
d
e
9k
18k
Standard length(m)
Additional refrigerant(g/m)
Standard length(m)
Additional refrigerant(g/m)
30
35
40
45
Additional charge(g) = Main piping additional refrigerant + Branch piping additional refrigerant
Main piping additional refrigerant = (Total main piping length - standard length) x Additional refrigerant
Branch piping additional refrigerant = (Total branch piping length - standard length) x Additional refrigerant
Main piping length
Branch piping length
7k/9k/12k/18k/24k : 25
A6UW368FA0
A7UW428FA0
A8UW488FA0
A9UW548FA0
Model
5
10
10
10
40
50
50
50
Additional Charge Caculcation Example-1
Summary of Contents for A6UW368FA0
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