INSTALLATION MANUAL---Important considerations
The maximum charge and the required minimum floor area
3
3
3
m
= (4
m
) x
LFL , m
= (26
m
)) x
LFL, m
= (130
m
)x
LFL
1
2
3
3
3
3
Where
LFL
is the lower flammable limit in kg/
m
R290 LFL is 0.038 kg/
m
,R32 LFL is 0.038 kg/
m .
For the appliances with a charge amount
m
<
M
=
m
:
1
2
(5/4)
The maximum charge in a room shall be in accordance with the following:
m
= 2 5 x (
LFL
)
x
h
max
1/2
x (
A
)
The required minimum floor area
A
min to install an appliance with refrigerant charge
M
(kg)
(5/4) 2
shall be in accordance with following:
A
= (
M
/ (2 5 x (
LFL
)
x
h
))
min
Where:
m
is the allowable maximum charge in a room, in kg;
max
M
is the refrigerant charge amount in appliance, in kg;
A
min is the required minimum room area, in m2;
2
A
is the room area, in m ;
3
LFL
is the lower flammable limit, in kg/m ;
h
is the installation height of the appliance,in meters for calculating
m
or
A
, 1 8 m for wall
max
min
mounted;
Table GG.1 - Maximum charge (kg)
Category
R290
0.038
R32
0.306
LFL
3
(kg/m )
h
0
(m)
2
Floor area (m )
0.6
0.05
0.07
0.08
0.1
0.11
0.14
0.18
4
7
10
15
20
30
50
1
0.08
0.11
0.13
0.16
0.19
0.2
0.3
1.8
0.15
0.2
0.24
0.29
0.34
0.41
0.53
2.2
0.18
0.24
0.29
0.36
0.41
0.51
0.65
0.6
0.68
0.9
1.08
0.32
1.53
1.87
2.41
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
2
Table GG.2 - Minimum room area (m )
Category
R290
0.038
R32
0.306
LFL
3
(kg/m )
h
0
(m)
Charge amount (M) (kg)
2
Minimum room area (m )
0.152kg
0.228kg
0.304kg
0.456kg
0.608kg
0.76kg
0.988kg
0.6
82
146
328
584
912
1514
1
30
53
118
210
328
555
1.8
9
16
36
65
101
171
2.2
6
11
24
43
68
115
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
