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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.
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)
1. Site Safety
Open Flames Prohibited
Ventilation Necessary
2. Operation Safety
Mind Static Electricity
The maximum charge and the required minimum floor area
Installation Safety Principles
33 3
m = (4 m ) x LFL , m = (26 m )) x LFL, m = (130 m )x LFL
12 3
33
Where LFL is the lower flammable limit in kg/ m
6
m.
For the appliances with a charge amount m < M = m :
12
The maximum charge in a room shall be in accordance with the following:
(5/4) 1/2
m = 2.5 x (LFL) x h x (A)
max 0
The required minimum floor area Amin 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 0
Where:
Important Considerations
Table GG.1 - Maximum charge (kg)
Category
R32
0.306
3
LFL (kg/m)
h(m)
0
2
Floor area (m)
4 7 10 15 20 30 50
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
Charge amount (M) (kg)
2
Minimum room area (m)
0.6
1
1.8
2.2
2
Table GG.2 - Minimum room area (m)
Category
R32
0.306
3
LFL (kg/m)
h(m)
0
1.224kg 1.836kg 2.448kg 3.672kg 4.896kg 6.12kg 7.956kg
29 51 116 206 321 543
10 19 42 74 116 196
3 6 13 23 36 60
2 4 9 15 24 40
Must wear protective clothing
and anti-static gloves
Don`t use mobile phone
INSTALLATION PRECAUTIONS(R32)
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