Samsung AM***MXWA Series - Calculating Total Additional Refrigerant; Refrigerant Calculation Examples

ENGLISH-29
02 INSTALLING THE PRODUCT
 Method to calculate the total amount of additional refrigerant
- Amount of additional refrigerant depends 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 100 kg. If the
refrigerant exceeds 100kg, separate the module so that the weight of the refrigerant doesn't exceed 100 kg.
Ex.) For AM200MXWA, basic amount of refrigerant is 9.8 kg, therefore total amount of additional refrigerant (ⓐ+ⓑ)
should not exceed 90.2kg.
 Example of refrigerant calculation for H/P System
Classication 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 (ⓐ)
6.35 5 0.02 0.1
ⓐ 7.975
9.52 70 0.06 4.2
12.70 15 0.125 1.875
15.88 10 0.18 1.8
Classication
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)
3 0.45 1.35
ⓑ 3.4
4way cassette
(AM090FN4DEH)
1 0.45 0.45
Slim duct
(AM071FNLDEH)
3 0.45 1.35
1way cassette
(AM036FN1DEH)
1 0.25 0.25
- Total amount of refrigerant (ⓐ+ⓑ) = 7.975+3.4=11.375 (kg)
 Example of refrigerant calculation for HR System
Classication 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 (ⓐ)
6.35 15 0.02 0.3
ⓐ 11.965
9.52 112 0.06 6.72
12.70 25 0.125 3.125
15.88 10 0.18 1.8
6.35
(EEV Kit ~ indoor
unit)
2 0.01 0.02