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INSTALLATION PRECAUTIONS(R32)
Important Considerations
8. The air conditioner must be installed by professional personnel and the Installation manual is used
only for the professional installation personnel! The installation specifications should be subject to
our after-sale service regulations.
9. When filling the combustible refrigerant, any of your rude operations may cause serious injury or
injuries to human body and objects.
10. A leak test must be done after the installation completed.
11. It is a must to do the safety inspection before maintaining or repairing an air conditioner
using combustible refrigerant in order to ensure that the fire risk is reduced to minimum.
12. It is necessary to operate the machine under a controlled procedure in order to ensure that
any risk arising from the combustible gas or vapor during the operation is reduced to minimum.
13. Requirements for the total weight of filled refrigerant and the area of a room to be equipped
with an air conditioner (are shown as in the following Tables GG.1 and GG.2)
The maximum charge and the required minimum floor area
m = (4 m
3
) x LFL , m = (26 m
1
2
Where LFL is the lower flammable limit in kg/ m
For the appliances with a charge amount m
The maximum charge in a room shall be in accordance with the following:
m = 2.5 x (LFL)
(5/4)
x h x (A)
max
The required minimum floor area Amin to install an appliance with refrigerant charge M (kg)
shall be in accordance with following: A = (M/ (2.5 x (LFL)
Where:
Category
LFL (kg/m)
R32
0.306
Category
LFL (kg/m)
R32
0.306
3
)) x LFL, m = (130 m
3
1/2
0
min
Table GG.1 - Maximum charge (kg)
h
(m)
3
4
0
1
1.14
1.8
2.05
2.2
2.5
Table GG.2 - Minimum room area (m)
h
(m)
3
0
1.224kg 1.836kg 2.448kg 3.672kg 4.896kg 6.12kg
0.6
1
1.8
2.2
3
)x LFL
3
,R32 LFL is 0.038 kg/ m
< M = m
:
1
2
(5/4)
x h ))
0
Floor area (m)
2
7
10
15
1.51
1.8
2.2
2.71
3.24
3.97
3.31
3.96
4.85
2
Charge amount (M) (kg)
Minimum room area (m)
29
51
116
10
19
42
3
6
13
2
4
9
12
3
.
2
20
30
2.54
3.12
4.58
5.61
5.6
6.86
2
206
321
74
116
23
36
15
24
50
4.02
7.254
8.85
7.956kg
543
196
60
40
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