Table of Contents
SET UP & USE
INTRODUCTION TO REFRIGERANTS R32
• Before installing the appliance, you must read the manual carefully
to get the safety information and notes.
• When filling the combustible refrigerant, any of your rude
operations may cause serious injury or injuries to human body or
bodies and object or objects.
• A leak test must be done after the installation is completed.
• 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.
• 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.
• Requirements for the total weight of filled refrigerant and the area of a room to
be equipped with an air conditioner.
The maximum charge and the required minimum floor area
m
= (4 m
3
) x LFL, m
1
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)
max
The required minimum floor area Amin to install an appliance with refrigerant
charge M(kg) shall be in accordance with following: A
Where:
m
is the allowable maximum charge in a room, in kg;
max
M is the refrigerant charge amount in appliance, in kg;
A
is the required minimum room area, in m
min
A is the room area, in m
LFL is the lower flammable limit, in kg/m ;
h
is the installation height of the appliance, in meters for calculating m
0
1.8 m for wall mounted;
LFL
Category
(kg/m
R32
0.306
LFL
Category
(kg/m
R32
0.306
= (26 m
3
) x LFL, m
2
(5/4)
x h
x (A)
1/2
0
3
;
Table GG.1 Maximum charge (kg)
h
0
3
)
(m)
4
0.6
0.68
1
1.14
1.8
2.05
2.2
2.5
Table GG.2 Minimum room area (m
h
0
3
)
(m)
1.224kg
0.6
/
1
/
1.8
/
2.2
/
= (130 m
3
) x LFL
3
3
, R32 LFL is 0.306 kg/m
< M≤m
1
2
;
Floor area(m
7
10
0.9
1.08
1.51
1.8
2.71
3.24
3.31
3.96
Charge amount(M)(kg)
Minimum room area(m
1.836kg
2.448kg
3.672kg
29
51
10
19
3
6
2
4
:
2
= (M/ (2.5 x (LFL)
min
2
)
15
20
30
1.32
1.53
1.87
2.2
2.54
3.12
3.97
4.58
5.61
4.85
5.6
6.86
2
)
2
)
4.896kg
6.12kg
116
206
321
42
74
116
13
23
36
9
15
24
3
.
(5/4)
xh
))
2
0
or A
,
max
min
50
2.41
4.02
7.254
8.85
7.956kg
543
196
60
40
Page 17
Table of Contents
Troubleshooting
