Samsung DVM S VRF - Page 149

149
10. Installation
Refrigerant pipe installation
 Method to calculate total amount of additional refrigerant
- Amount of additional refrigerant depending on the pipe length (ⓐ)
- Amount of additional refrigerant for each indoor unit (ⓑ) = ∑(Amount of additional refrigerant for each connected
indoor unit)  Refer to the table
- Total amount of additional refrigerant = ⓐ+ⓑ
 Sum of total amount of additional refrigerant and the basic amount of refrigerant should not exceed 100kg. If the
refrigerant exceeds 100kg, separate the module so that weight of the refrigerant doesn't exceed 100kg.
Ex.) For AM200FXVAG, basic amount of refrigerant is 8.4kg, therefore total amount of additional refrigerant
(ⓐ+ⓑ) should not exceed 91.6kg.
 Example of refrigerant calculation for HP models
Classifica-
tion
Size of
liquid
pipe
Length
(m)
Unit amount of refriger-
ant (kg/m)
Amount of additional
refrigerant (kg)
Total amount of addition-
al refrigerant (kg)
① ② ①×② ∑(①×②)
Liquid pipe
(
ⓐ
)
Ø 6.35 35 0.02 0.7
ⓐ
5.575Ø 9.52 50 0.06 3.0
Ø 12.70 15 0.125 1.875
Classification
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)
① ② ①
×
②
∑(
①
×
②
)
Indoor unit
(
ⓑ
)
4way cassette
(AM071FN4DEH

)
4 0.45 1.80
ⓑ
3.10
Slim duct
(AM056FNLDEH

)
2 0.35 0.70
Slim duct
(AM045FNLDEH

)
1 0.35 0.35
1way cassette
(AM036FN1DEH

)
1 0.25 0.25
- Total amount of refrigerant (ⓐ+ⓑ) = 5.575+3.10 = 8.675 (kg)
 Example of refrigerant calculation for HR models
Classification
Size of liquid
pipe
Length (m)
Unit amount of refrigerant
(kg/m)
Amount of additional
refrigerant (kg)
Total amount of additional
refrigerant (kg)
① ② ①
×
②
∑(
①
×
②
)
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
(EEV Kit ~
indoor unit)
2 0.01 0.02