19
ENG
The maximum charge and the required minimum floor area
m
1
= (4 m
3
) x LFL , m
2
= (26 m
3
) x LFL, m
3
= (130 m
3
) x LFL
Where LFL is the lower flammable limit in kg/m
3
, R32 LFL is 0.038 kg/m
3
.
For the appliances with a charge amount
m
1
< M = m
2
:
The maximum charge in a room shall be in accordance with the following:
m
max
= 2.5 x (LFL)
(5/4)
x h
0
x (A)
1/2
The required minimum floor area A
min
to install an appliance with refrigerant charge M (kg) shall be in accordance
with following:
A
min
= (M/ (2.5 x (LFL)
(5/4)
x h
0
))
2
Where:
Category
LFL
(kg/m
3
)
h
0
(m)
Floor area (m
2
)
4
7
10
15
20
30
50
R32
0.306
1
1.14
1.51
1.8
2.2
2.54
3.12
4.02
1.8
2.05
2.71
3.24
3.97
4.58
5.61
7.254
2.2
2.5
3.31
3.96
4.85
5.6
6.86
8.85
Table GG.1 - Maximum charge (kg)
Category
LFL
(kg/m
3
)
h
0
(m)
Charge amount (M) (kg) Minimum room area (m
2
)
4
7
10
15
20
30
50
R32
0.306
1.224kg
1.836kg
2.448kg
3.672kg
4.896kg
6.12kg
7.956kg
0.6
29
51
116
206
321
543
1
10
19
42
74
116
196
1.8
3
6
13
23
36
60
2.2
2
4
9
15
24
40
Table GG.2 - Minimum room area (m
2
)
Installation Safety Principles
1. Site Safety
2. Operation Safety
3. Installation Safety
• Open Flames Prohibited
• Ventilation Necessary
• Mind Static Electricity
• Must wear protective clothing and anti-static gloves
• Don`t use mobile phone
• Refrigerant Leak Detector
• Appropriate Installation Location
The left picture is the schematic diagram
of a refrigerant leak detector.
Summary of Contents for TT37AF-1232IAW
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