15
GB
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.
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].
<Additional charge>
Piping length from outdoor unit to the most farthest indoor unit 30.5 m [100 ft] use the table [A]
Piping length from outdoor unit to the most farthest indoor unit > 30.5 m [100 ft] use the table [B]
Additional refrigerant
charge
+
High-pressure pipe size
Total length of
ø22.2 mm [7/8 in]
+
High-pressure pipe size
Total length of
ø19.05 mm [3/4 in]
+
High-pressure pipe size
Total length of
ø15.88 mm [5/8 in]
[A]
(kg) [oz]
[A]
(m) × 0.23 (kg/m)
(ft) × 2.48 (oz/ft)
[A]
(m) × 0.16 (kg/m)
(ft) × 1.73 (oz/ft)
[A]
(m) × 0.11 (kg/m)
(ft) × 1.19 (oz/ft)
[B]
(kg) [oz]
[B]
(m) × 0.21 (kg/m)
(ft) × 2.26 (oz/ft)
[B]
(m) × 0.14 (kg/m)
(ft) × 1.51 (oz/ft)
[B]
(m) × 0.1 (kg/m)
(ft) × 1.08 (oz/ft)
+
Liquid Piping Size
Total length of
ø15.88 mm [5/8 in]
+
Liquid Piping Size
Total length of
ø12.7 mm [1/2 in]
+
Liquid Piping Size
Total length of
ø9.52 mm [3/8 in]
+
Liquid Piping Size
Total length of
ø6.35 mm [1/4 in]
[A]
(m) × 0.2 (kg/m)
(ft) × 2.16 (oz/ft)
[A]
(m) × 0.12 (kg/m)
(ft) × 1.30 (oz/ft)
[A]
(m) × 0.06 (kg/m)
(ft) × 0.65 (oz/ft)
[A]
(m) × 0.024 (kg/m)
(ft) × 0.26 (oz/ft)
[B]
(m) × 0.18 (kg/m)
(ft) × 1.94 (oz/ft)
[B]
(m) × 0.11 (kg/m)
(ft) × 1.19 (oz/ft)
[B]
(m) × 0.054 (kg/m)
(ft) × 0.59 (oz/ft)
[B]
(m) × 0.021 (kg/m)
(ft) × 0.23 (oz/ft)
+
Total Outdoor
Unit
Model Name
Charged amount
per BC controller
(Standard/Main)
+
BC controller
(Main) HA-Type
+
BC controller
(Sub) Total Units
BC controller
(Sub) Per Unit
+
Total Capacity of
Connected Indoor
Units
Per Indoor Unit
P72
3.0 kg [106 oz]
2.0 kg
1
1.0 kg [36 oz]
Models
~ 27
2.0 kg [71 oz]
P96
4.5 kg [160 oz]
2
2.0 kg [71 oz]
Models 28 ~ 54
2.5 kg [89 oz]
P144
6.0 kg [212 oz]
Models 55 ~ 126
3.0 kg [106 oz]
P192
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]
+
Total Outdoor Unit
Model Name
Charged amount
for Outdoor Unit(s)
Single
P72
0.0 kg [0 oz]
P96
1.0 kg [36 oz]
Combination
P144
0.0 kg [0 oz]
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
outdoor units
P72
P96
P144
P192
Maximum *1
refrigerant charge
39.0 kg
[86 LBS]
47.3 kg
[104 LBS 3 oz]
58.5 kg
[129 LBS]
86.3 kg
[190 LBS 3 oz]
*1 Maximum refrigerant charge: the amount of factory-charged refrigerant and the amount of refrigerant to be added on site
