10. Installation
– Total amount of refrigerant (
ⓐ
+
ⓑ
) = 5.575
+ 3.78 = 9.355(kg)
= 12.19 + 8.22 = 20.41(lb)
•
Example of refrigerant calculation for HP models
Classification
Size of liquid pipe
[mm (inch)]
Length [m (ft)]
Unit amount of refrigerant
[kg/m (lb/ft)]
Amount of additional
refrigerant [kg (lb)]
Total amount of additional
refrigerant [kg (lb)]
×
ॣ࣑
×
)
Liquid pipe (
)
Ø6.35 (Ø1/4)
35 (114.8)
0.02 (0.013)
0.7 (1.49)
5.575 (12.19)
Ø9.52 (Ø3/8)
50 (164.0)
0.06 (0.040)
3.0 (6.56)
Ø12.70 (Ø1/2)
15 (49.2)
0.125 (0.084)
1.875 (4.13)
Classification
Model name of
indoor unit
Number of indoor units
Unit amount of refrigerant
[kg/EA (lb/EA)]
Amount of additional
refrigerant [kg (lb)]
Total amount of additional
refrigerant [kg (lb)]
×
Indoor unit (
)
4way cassette
(AM018RN4DCH)
4
0.57 (1.26)
2.28 (4.92)
3.78 (8.22)
LSP duct
(AM024FNLDCH)
2
0.45 (0.99)
0.90 (1.98)
LSP duct
(AM012FNLDCH)
1
0.35 (0.77)
0.35 (0.77)
1way cassette
(AM012AN1PCH)
1
0.25 (0.55)
0.25 (0.55)
ॣ࣑
×
)