TCL Air Conditioner Service Manual
18
install your air conditioner in a room with an appropriate area and use it correctly.
Compared with ordinary refrigerants, Refrigerants R32 & R290 are environmentally friendly and do not
destroy the ozone sphere and that their values of greenhouse effect are also very low.
2) R32/R290 air conditioner installation area requirement
m1=(4m
3
)×LFL, m2=(26m
3
) ×LFL, m3=(130m
3
) ×LFL
Where LFL is the lower flammable limit in kg/m
3
, R290 LFL is 0.038kg/m
3
, R32 LFL is 0.306kg/m
3
.
For the appliances with a charge amount m1<M<m2:
The maximum charge in a room shall be in accordance with the flowing: M
max
=2.5×(LFL)
(5/4)
×h
0
×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:
M
max
is the allowable maximum charge in a room, in kg;
M is the refrigerant charge amount in appliance, in kg;
A
min
is the required minimum room area, in m2;
A is the room area, in m2;
LFL is the lower flammable limit, in kg/m3;
h0 is the installation height of the appliance, in meters for calculating M
max
or A
min
, 1.8 m for wall mounted;
Table GG.1 - Maximum charge (kg)
Category
LFL
(kg/m3)
h0
(m)
Floor area (m
2
)
Maximum charge (kg)
4 7 10 15 20 30 50
R290 0.038
0.6 0.05 0.07 0.08 0.1 0.11 0.14 0.18
1 0.08 0.11 0.03 0.06 0.09 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
R32 0.306
0.6 0.68 0.9 1.08 1.32 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
Table GG.2 - Minimum room area (m2)
Category
LFL
(kg/m3)
h0
(m)
Charge amount (M) (kg)
Minimum room area (m2)
R290 0.038
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
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
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