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• Check the additional amount of refrigerant.
Checklist 2
Calculate the additional amount of refrigerant from the additional amount of refrigerant (A) by the pipe diameter on
the liquid side, the pipe length to be connected, and the corrective amount of refrigerant (C) according to system
horsepower.
Additional amount
of refrigerant
First, enter the total length for each liquid pipe diameter in the following table, and then calculate the additional
amount of refrigerant by pipe length.
<Additional amount of refrigerant by pipe length>
Pipe diameter on the liquid
side
Ø
6
4 .
0
0 .
Ø
9
5 .
0
0 .
Ø
1
2
7 .
0
1 .
Ø
1
5
9 .
0
1 .
Ø
1
9
0 .
0
2 .
Ø
2
2
2 .
0
3 .
Next, refer to the following table for the corrective amount of refrigerant (C) according to system horsepower.
<Corrective amount of refrigerant according to system horsepower>
Combined HP (HP)
Standard type
High Efficiency type
Lastly, add the additional amount of refrigerant by pipe length (A) to the corrective amount of refrigerant by
combined horsepower (C). This is the final additional amount of refrigerant.
If a minus sign is indicated as the result, do not add the refrigerant (= 0 kg).
<Additional amount of refrigerant>
A
d
d
t i
o i
n
l a
a
m
o
u
t n
f o
e r
r f
g i
e
a r
t n
b
y
p
Corrective amount of refrigerant according to combined horsepower (C)
A
d
d
t i
o i
n
l a
a
m
o
u
t n
f o
e r
r f
g i
e
a r
t n
Actual liquid pipe length × Additional amount
=
of refrigerant per 1 m of liquid pipe
Standard amount of
Total pipe length on each liquid side
refrigerant
kg/m
2
5
×
5
5
×
0
5
×
6
0
×
5
0
×
5
0
×
Additional amount of refrigerant by pipe length (A)
Combined outdoor units (HP)
8
8
H
P
1
0
1
0
H
P
1
2
1
2
H
P
1
4
1
4
H
P
1
6
1
6
H
P
1
8
1
0
H
P
2
0
1
0
H
P
2
2
1
2
H
P
2
4
1
2
H
P
2
6
1
6
H
P
2
8
1
6
H
P
3
0
1
6
H
P
3
2
1
6
H
P
3
4
1
2
H
P
3
6
1
2
H
P
3
8
1
6
H
P
4
0
1
6
H
P
4
2
1
6
H
P
4
4
1
6
H
P
4
6
1
6
H
P
4
8
1
6
H
P
1
6
8
H
P
2
4
8
H
P
2
6
1
0
H
P
2
8
1
0
H
P
3
0
1
0
H
P
3
2
8
H
P
3
4
1
0
H
P
3
6
1
0
H
P
3
8
1
0
H
P
4
0
1
0
H
P
4
2
1
2
H
P
4
4
1
2
H
P
4
6
1
2
H
P
4
8
1
2
H
P
p i
e
e l
n
g
h t
(
) A
+
(
) A
m
=
=
=
=
=
=
–
–
–
–
–
–
–
–
–
–
8
H
P
–
1
0
H
P
–
1
0
H
P
–
1
2
H
P
–
1
0
H
P
–
1
2
H
P
–
1
4
H
P
–
1
6
H
P
–
1
2
H
P
1
0
H
P
1
2
H
P
1
2
H
P
1
2
H
P
1
0
H
P
1
2
H
P
1
2
H
P
1
4
H
P
1
2
H
P
1
6
H
P
1
2
H
P
1
6
H
P
1
4
H
P
1
6
H
P
1
6
H
P
8
H
P
–
8
H
P
8
H
P
8
H
P
8
H
P
1
0
H
P
8
H
P
1
0
H
P
1
0
H
P
8
H
P
8
H
P
8
H
P
8
H
P
1
0
H
P
8
H
P
1
0
H
P
1
0
H
P
1
0
H
P
1
0
H
P
1
0
H
P
1
0
H
P
1
2
H
P
1
0
H
P
1
2
H
P
1
2
H
P
1
2
H
P
1
2
H
P
k
g
kg
k
g
– 120 –
Corrective amount of refrigerant
according to system horsepower
(
C
)
Additional amount of refrigerant pipe diameter on
each liquid side
kg
C (Corrective amount of refrigerant) (kg)
–
1
5 .
–
2
5 .
–
3
5 .
–
8
5 .
–
1
0
–
0
0 .
–
3
0 .
–
5
0 .
–
7
5 .
–
8
5 .
–
9
5 .
–
1
1
–
1
2
–
3
0 .
–
4
0 .
–
6
0 .
–
7
0 .
–
8
0 .
–
1
0
–
1
2
–
1
4
–
0
0 .
–
4 -
–
4 -
–
2 -
–
0
0 .
8
H
P
6 -
8
H
P
6 -
8
H
P
6 -
8
H
P
6 -
1
0
H
P
5 -
1
0
H
P
4 -
1
0
H
P
2 -
1
0
H
P
0
0 .
1
2
H
P
2
0 .
kg
kg
kg
kg
kg
kg
kg
5 .
5 .
5 .
0 .
0 .
0 .
0 .
0 .
0 .
0 .
0 .
0 .
0 .
0 .
0 .
0 .
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