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10. Additional refrigerant charge
At the time of shipping, the outdoor unit is charged with refrigerant.
This charge does not include the amount needed for extended piping and
additional charging of each refrigerant line will be required on-site. In order that
future servicing may be properly provided, always keep a record of the size and
length of each refrigerant line and the amount of additional charge by writing it in
the space provided on the outdoor unit.
Piping length from outdoor unit to the most farthest indoor unit 30.5 m [100 ft]
Piping length from outdoor unit to the most farthest indoor unit > 30.5 m [100 ft]
Additional refrigerant
charge
+
[A]
(kg) [oz]
[B]
(kg) [oz]
Liquid Piping Size
Total length of
ø15.88 mm [5/8 in]
+
+
(m) × 0.2 (kg/m)
[A]
(ft) × 2.16 (oz/ft)
(m) × 0.18 (kg/m)
[B]
(ft) × 1.94 (oz/ft)
Total Outdoor
Charged amount
Unit
per BC controller
+
Model Name
(Standard/Main)
P72
3.0 kg [106 oz]
P96
4.5 kg [160 oz]
P144
6.0 kg [212 oz]
P192
Total Outdoor Unit
Charged amount
Model Name
for Outdoor Unit(s)
+
P72
0.0 kg [0 oz]
Single
P96
1.0 kg [36 oz]
P144
0.0 kg [0 oz]
Combination
P192
2.0 kg [71 oz]
Maximum refrigerant charge
There is a limit to the amount of refrigerant that can be charged into a unit. Regardless of the amount yielded by the formula above, observe the maximum refrigerant
charge in the table below.
Total index of the
P72
outdoor units
Maximum *1
39.0 kg
refrigerant charge
[86 LBS]
[104 LBS 3 oz]
*1 Maximum refrigerant charge: the amount of factory-charged refrigerant and the amount of refrigerant to be added on site
High-pressure pipe size
Total length of
ø22.2 mm [7/8 in]
+
(m) × 0.23 (kg/m)
[A]
[A]
(ft) × 2.48 (oz/ft)
(m) × 0.21 (kg/m)
[B]
[B]
(ft) × 2.26 (oz/ft)
Liquid Piping Size
Total length of
ø12.7 mm [1/2 in]
+
(m) × 0.12 (kg/m)
[A]
[A]
(ft) × 1.30 (oz/ft)
(m) × 0.11 (kg/m)
[B]
[B]
(ft) × 1.19 (oz/ft)
BC controller
BC controller
(Main) HA-Type
(Sub) Total Units
+
+
2.0 kg
P96
P144
P192
47.3 kg
58.5 kg
86.3 kg
[129 LBS]
[190 LBS 3 oz]
10.1. Calculation of additional refrigerant
charge
Calculate the amount of additional charge based on the length of the piping
extension and the size of the refrigerant line.
Use the table below as a guide for calculating the amount of additional
charging and then charge the system accordingly.
If the calculation results in a fraction of less than 0.1 kg [4 oz], round up
to the next 0.1 kg [4 oz]. For example, if the result of the calculation was
27.73 kg [979 oz], round the result up to 27.8 kg [983 oz].
use the table [A]
use the table [B]
High-pressure pipe size
High-pressure pipe size
Total length of
ø19.05 mm [3/4 in]
+
(m) × 0.16 (kg/m)
[A]
(ft) × 1.73 (oz/ft)
(m) × 0.14 (kg/m)
[B]
(ft) × 1.51 (oz/ft)
Liquid Piping Size
Total length of
ø9.52 mm [3/8 in]
+
(m) × 0.06 (kg/m)
[A]
(ft) × 0.65 (oz/ft)
(m) × 0.054 (kg/m)
[B]
(ft) × 0.59 (oz/ft)
BC controller
(Sub) Per Unit
+
1
1.0 kg [36 oz]
2
2.0 kg [71 oz]
Total length of
ø15.88 mm [5/8 in]
(m) × 0.11 (kg/m)
(ft) × 1.19 (oz/ft)
(m) × 0.1 (kg/m)
(ft) × 1.08 (oz/ft)
Liquid Piping Size
Total length of
ø6.35 mm [1/4 in]
(m) × 0.024 (kg/m)
(ft) × 0.26 (oz/ft)
(m) × 0.021 (kg/m)
(ft) × 0.23 (oz/ft)
Total Capacity of
Connected Indoor
Per Indoor Unit
Units
Models
~ 27
2.0 kg [71 oz]
Models 28 ~ 54
2.5 kg [89 oz]
Models 55 ~ 126
3.0 kg [106 oz]
Models 127 ~ 144
3.5 kg [124 oz]
Models 145 ~ 180
4.5 kg [159 oz]
Models 181 ~ 234
5.0 kg [177 oz]
Models 235 ~ 273
6.0 kg [212 oz]
Models 274 ~ 307
8.0 kg [283 oz]
15
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