07
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
5
15
25
35
45
55
65
(b)
(a)
Installation of pipe-work shall be kept to a
minimum.
Pipework shall be protected from physical
damage and shall not be installed in an
unventilated space, if that space is smaller than
Amin in sections 1.3.1.3 and 1.3.1.4.
Compliance with national gas regulations shall
be observed;
Mechanical connections made shall be
accessible for maintenance purposes.
The space considered shall be any space
which contains refrigerant-containing parts or
into which refrigerant could be released.
The room area (A) of the smallest, enclosed,
occupied space shall be used in the
determination of the refrigerant quantity limits.
The indoor unit installation height cannot be
less than 1.8 m. For more detailed instructions
on the installation height of the indoor units,
please refer to the corresponding installation
and operations manual.
If the installation height of the indoor unit is less
than 1.8 m, please contact your installer or
dealer to receive more information and
professional advice.
The refrigerating systems shall use only permanent
joints indoors except for site-made joints directly
connecting the indoor unit to the refrigerant piping, or
factory made mechanical joints in compliance with ISO
14903.
(IEC 60335-2-40 Standard Requirements).
Refrigerant tubing shall be protected or enclosed to
avoid damage.
Equipment pipes in the occupied space in question
must be installed in such a way that it is protected
against accidental damage.
The system uses R32 refrigerant which is classified as
class A2 and is flammable under EN 60335-2-40.
Follow the requirements below to ensure that the
system complies with legislation.
The total amount of refrigerant in the system shall be
less than or equal to the maximum refrigerant charge.
The maximum refrigerant charge depends on the
amount of space in the rooms being served by the
system.
The room area (A) shall be defined as the room area
enclosed by the projection to the base of the walls,
partitions and doors of the space in which the appliance
is installed.
In addition, the maximum refrigerant charge is also
related to the installation height of the indoor units. The
correspondence of the maximum refrigerant charge
with the minimum room area (Amin) is shown in Figure
1-1 and Table 1-1. And different values are used for
different indoor unit installation heights:
1.3.1.3 Refrigerant charge and room area
limitations (strategy 1)
If installation height is greater than or equal to 1.8
m, but less than 2.2 m, use the refrigerant charge
limitation of the graph for installation height 1.
If installation height is not less than 2.2 m, use the
refrigerant charge limitation of the graph for
installation height 2.
Figure 1-1
(a) Installation height 1
(b) Installation height 2
Minimum room area (Amin/m
2
)
Maximum refrigerant charge (Mmax/kg)
NOTE
NOTE
NOTE
