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Additional safety manual for R32 refrigerant air conditioner and heat pump according to IEC 60335-2-40:2018
Explanation of symbols displayed on the indoor unit or
outdoor unit.
This symbol shows that this equipment
uses a flammable refrigerant (A2L).
WARNING
If the refrigerant is leaked, together with
an external ignition source, there is a
possibility of ignition.
This symbol shows that the Operation
CAUTION
Manual should be read carefully.
This symbol shows that a service personnel
CAUTION
should be handling this equipment with
reference to the Installation Manual.
This symbol shows that there is information
CAUTION
included in the Operation Manual and/or
Installation Manual.
• Do not use means to accelerate the defrosting process or to
clean, other than those recommended by the manufacturer.
• The appliance shall be stored in a room without continuously
operating ignition sources (for example: open flames, an
operating gas appliance or an operating electric heater).
• Do not pierce or burn.
• Be aware that the R32 refrigerant does not contain an odour.
• Do not disconnect the pipe connection after checking the
leak otherwise it may cause refrigerant leakage.
CAUTION
1. Installation (Space)
• That the installation of pipe-work shall be kept to a minimum.
• That pipe-work shall be protected from physical damage and
shall not be installed in an unventilated space.
• That compliance with national gas regulations shall be
observed.
• That mechanical connections shall be accessible for
maintenance purposes.
• In cases that require mechanical ventilation, ventilation
openings shall be kept clear of obstruction.
• When disposing of the product is used, be based on national
regulations, properly processed.
• An unventilated area where the appliance using flammable
refrigerants is installed shall be so constructed that should
any refrigerant leak, it will not stagnate so as to create a fire
or explosion hazard
– The appliance shall be stored in a well-ventilated area
where the room size corresponds to the room area as
specified for operation;
– The appliance shall be stored in a room without
continuously operating open flames (for example an
operating gas appliance) and ignition sources (for example
an operating electric heater).
• Other potential continuously operating sources known to
cause ignition of the refrigerant used.
• The appliance shall be stored so as to prevent mechanical
damage from occurring.
1
PMML0524 rev.2 - 01/2021
WARNING
• The following chart and table shows the minimum floor area (A
required for the installation of an indoor unit from a refrigerant
system containing a certain refrigerant charge (m
refrigerant), and supposing a total room height not lower than 2.2
m. (According to IEC 60335-2-40:2018 and
EN 378-1:2016).
• For m
<1.84 kg, IEC 60335-2-40:2018 and EN 378-1:2016 do not
c
establish any minimum floor area restriction. In that case check
local regulations to ensure that no hard restrictions may apply.
A
(m
)
Installation restrictions for indoor units using R32 refrigerant
2
min
900
800
700
600
500
400
300
200
100
0
1.5
2
2.5
3
3.5
4
4.5
5
Floor mounted
A
= (m
*/(2.5*LFL^
min
c
• A
: Minimum installation area of an Indoor unit for a given
min
refrigerant charge m
(kg) and considering the installation
c
height h
(m
)
2
0
• h
: Installation height of the bottom side of the indoor unit +
0
distance from the indoor unit bottom side to the lowest part for
which a refrigerant leak may release to the indoor area
• m
: total system refrigerant charge that could be released to
c
the indoor area in case of undetected refrigerant leak.
• LFL: Lower Flammability Limit for R32, 0,307 kg/m
established by EN 378-1:2016 and ISO 817
Minimum floor area for equipment installed inside
A
(m
)
2
min
m
(kg)
c
Floor mounted
1.84
28.81
1.9
30.72
2.0
34.04
2.1
37.53
2.2
41.19
2.3
45.02
2.4
49.02
2.5
53.19
2.6
57.53
2.7
62.04
2.8
66.72
2.9
71.58
3.0
76.6
3.1
81.79
3.2
87.15
3.3
92.68
3.4
98.39
3.5
104.26
4.0
136.17
4.5
172.34
5.0
212.77
6.0
306.39
7.0
417.03
8.0
544.69
9.0
689.38
10.0
851.08
• Floor mounted: Refrigerant parts not sealed installed <0.6m height
• Wall mounted: Refrigerant parts not sealed installed >1.8m height
• Ceiling mounted: Refrigerant parts not sealed installed >2.2m height
) of R32 (A2L
c
5.5
6
6.5
7
7.5
8
8.5
9
9.5
Ceiling mounted
Wall mounted
* h
)
(5/4)
^2
0
as
3
A
(m
)
A
(m
2
2
min
min
Wall mounted
Ceiling mounted
3.20
2.14
3.41
2.29
3.78
2.53
4.17
2.79
4.58
3.06
5.00
3.35
5.45
3.65
5.91
3.96
6.39
4.28
6.89
4.61
7.41
4.96
7.95
5.32
8.51
5.70
9.09
6.08
9.68
6.48
10.30
6.89
10.93
7.32
11.58
7.75
15.13
10.13
19.15
12.82
23.64
15.83
34.04
22.79
46.34
31.02
60.52
40.51
76.60
51.28
94.56
63.30
)
min
10
m
(kg)
c
)
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