49
ENGLISH
ॷ
Example of refrigerant calculation for HR models
A̷ɇϑϑ̈ѣʀɇϩ̈ͱ͝
Size of liquid pipe
Length (m)
Unit amount
of refrigerant
(kg/m)
Amount of
additional
refrigerant (kg)
Total amount
of additional
refrigerant (kg)
×
ॣ࣑
× )
Liquid pipe ( )
Ø 6.35
15
0.02
0.3
11.965
Ø 9.52
112
0.06
6.72
Ø 12.70
25
0.125
3.125
Ø 15.88
10
0.18
1.8
Ø 6.35
࣑kkǤç̈ϩड़̈͝ʒͱͱθЇ̈͝ϩ࣒
2
0.01
0.02
A̷ɇϑϑ̈ѣʀɇϩ̈ͱ͝
Model name of
indoor unit
Number of units
Unit amount of
refrigerant (kg/EA)
Amount of
additional
refrigerant (kg)
Total amount
of additional
refrigerant (kg)
×
ॣ࣑
× )
Indoor unit ( )
4way cassette
࣑đߢߩߣĘߦUk²७࣒
5
0.45
2.25
4.66
4way cassette
࣑đߣߣߤĘߦUk²७࣒
2
0.57
1.14
Neo forte
࣑đߢߤߪĘƟUk²७࣒
1
0.27
0.27
MCU
2
0.5
1
ৄ
Total amount of refrigerant ( + ) = 11.965+4.66 = 16.625 (kg)
Temper grade and minimum thickness of the refrigerant pipe
Outer diameter (mm)
Minimum thickness (mm)
Temper grade
Ø 6.35
0.70
Annealed
Ø 9.52
0.70
Ø 12.70
0.80
Ø 15.88
1.00
Ø 19.05
0.90
Drawn
Ø 22.22
0.90
Ø 25.40
1.00
Ø 28.58
1.10
Ø 31.75
1.10
Ø 34.92
1.20
Ø 38.10
1.35
Ø 41.28
1.43
Ø 44.45
1.60
Ø 50.80
2.00
Ø 53.98
2.10
