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7
Installation precautions (R32)
7.1
Important considerations
1. 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.
2. When filling the combustible refrigerant, any
of your rude operations may cause serious
injury or injuries to human body and objects.
3. A leak test must be done after the installation
completed.
4. 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.
5. 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.
Where:
Category LFL (kg/m
R32
0.306
34 / 120 EN
)
h
(m)
3
o
4
1
1.14
1.8
2.05
2.2
2.5
6. 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)
7.2
The maximum charge and
the required minimum
floor area
m
= (4 m
) x LFL, m
3
1
m
= (130 m
) x LFL
3
3
Where LFL is the lower flammable limit in kg/m
R32 LFL is 0.038 kg/m
For the appliances with a charge amount
m
< M = m
:
1
2
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
= (M/ (2.5 x (LFL)
min
Table GG.1 - Maximum charge (kg)
Floor area (m
7
10
15
1.51
1.8
2.2
2.71
3.24
3.97
3.31
3.96
4.85
Split type air conditioner / User Manual
= (26 m
)) x LFL,
3
2
.
3
x h
x (A)
(5/4)
1/2
o
x h
))
(5/4)
2
o
)
2
20
30
2.54
3.12
4.58
5.61
5.6
6.86
,
3
50
4.02
7.254
8.85
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