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Checklist 2
• Check the additional amount of refrigerant.
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.
Pipe diameter on the liquid
side
Standard amount of
refrigerant
kg/m
Total pipe length on each liquid side
m
Additional amount of refrigerant pipe diameter on
each liquid side
kg
Ø6.4
Ø9.5
Ø12.7
Ø15.9
Ø19.0
Ø22.2
0.025 ×
0.055 ×
0.105 ×
0.160 ×
0.250 ×
0.350 ×
=
=
=
=
=
=
Additional amount of refrigerant by pipe length (A)
Kg
Kg
Kg
Kg
Kg
Kg
Kg
Corrective amount of refrigerant
according to system horsepower
Additional amount
of refrigerant
=
(A) (C)
× 1.3 +
Actual liquid pipe length × Additional amount
of refrigerant per 1 m of liquid pipe
Equivalent
HP
Combination of outdoor unit
MMY-
Corrective of
refrigerant
(kg)
Model name of
outdoor unit
MMY-
Unit 1 Unit 2 Unit 3
MAP0804
∗
MAP1004
∗
MAP1204
∗
MAP1404
∗
AP1614
∗
AP1814
∗
AP2014
∗
AP2214
∗
AP2414
∗
AP2614
∗
AP2814
∗
AP3014
∗
AP3214
∗
AP3414
∗
AP3614
∗
AP3814
∗
AP4014
∗
AP4214
∗
MAP0804
∗
MAP1004
∗
MAP1204
∗
MAP1404
∗
MAP0804
∗
MAP1004
∗
MAP1004
∗
MAP1204
∗
MAP1404
∗
MAP1404
∗
MAP1404
∗
MAP1004
∗
MAP1204
∗
MAP1404
∗
MAP1204
∗
MAP1404
∗
MAP1404
∗
MAP1404
∗
—
—
—
—
MAP0804
∗
MAP0804
∗
MAP1004
∗
MAP1004
∗
MAP1004
∗
MAP1204
∗
MAP1404
∗
MAP1004
∗
MAP1004
∗
MAP1004
∗
MAP1204
∗
MAP1204
∗
MAP1404
∗
MAP1404
∗
—
—
—
—
—
—
—
—
—
—
—
MAP1004
∗
MAP1004
∗
MAP1004
∗
MAP1204
∗
MAP1204
∗
MAP1204
∗
MAP1404
∗
8 HP
10 HP
12 HP
14 HP
16 HP
18 HP
20 HP
22 HP
24 HP
26 HP
28 HP
30 HP
32 HP
34 HP
36 HP
38 HP
40 HP
42 HP
2
3
8
10
0
1.5
3.5
7.5
8.5
11
12
2.5
5
6
8
9.5
11
12.5
Additional amount of refrigerant by pipe length (A)
Corrective amount of refrigerant according to combined horsepower (C)
Additional amount of refrigerant
Kg
Kg
Kg
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>
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>
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>
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