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NOTE 1 This formula cannot be used for refrigerants lighter than 42 kg/kmol.
NOTE 2 Some examples of the results of the calculations according to the
above formula are given in Tables 1-1 and 1-2.
NOTE 3
For factory sealed appliances, the nameplate on the unit itself
marked the refrigerant charge can be used to calculate A
NOTE 4 For field charged products, calculation of A
installed refrigerant charge not to exceed the factory specified maximum
refrigerant charge.
The maximum charge in a room and the required minumum floor area to install
an appliance, please refer to the "Owner's Manual & Installation Manual" of the
unit. For specific information on the type of gas and the amount, please refer to
the relevant label on the unit itself.
Table. 1-1
Refrigerant
LFL(kg/m )
Type
R32
0.306
R290
0.038
Table. 1-2
Refrigerant
LFL(kg/m )
Type
0.306
R32
0.038
R290
Max Refrigerant Charge (kg)
Installation
3
Height H0(m)
4
0.6
0.68
1.0
1.14
1.8
2.05
2.50
2.2
0.05
0.6
0.08
1.0
0.15
1.8
0.18
2.2
Min. Room Area (m )
Installation
3
Height H0(m)
1.224kg 1.836kg
0.6
1.0
1.8
2.2
0.152kg 0.228kg 0.304kg 0.456kg 0.608kg 0.76kg 0.988kg
0.6
1.0
1.8
2.2
min
Floor Area (m )
7
10
15
0.90
1.08
1.32
1.51
1.80
2.20
2.71
3.24
3.97
3.31
3.96
4.85
0.07
0.08
0.10
0.11
0.13
0.16
0.20
0.24
0.29
0.24
0.29
0.36
2
Charge Amount in kg
Minimum Room Area ( m
2.448kg
3.672kg
29
51
116
10
19
42
3
6
13
2
4
9
82
146
328
30
53
118
9
16
36
11
24
6
.
min
can be based on the
2
20
30
50
1.53
1.87
2.41
2.54
3.12
4.02
7.24
4.58
5.61
5.60
6.86
8.85
0.11
0.14
0.18
0.19
0.23
0.30
0.34
0.41
0.53
0.41
0.51
0.65
2
)
6.12kg
4.896kg
7.956kg
206
321
543
74
116
196
23
36
60
15
24
40
584
912
1541
210
328
555
65
101
171
43
68
115
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