32-EN
31-EN
– 16 –
EN
(1) Installation conditions for each requirement
• To comply with the requirements of enhanced tightness refrigerating systems of IEC 60335-2-40, the system is
equipped with the shut-off valves (Flow Selector unit, Shut-off valve unit) , Leak detector and Battery kit.
And each systems have the appropriate safety systems in according to the system speci
fi
cations.
In case the requirements of this manual are followed, no additional safety measures are needed.
• Follow the installation requirements below to ensure that the complete system is compliant to legislation.
If you have any questions, please contact the dealer where you purchased the product.
Depending on the conditions, safety measures (optional parts) may be required.
• System compliance has been completed to IEC60335-2-40 Ed6. If EN378 compliance is required please refer
separately to EN378 for guidance.
1) Outdoor unit installation
Please observe the following warning and install according to “4. Installation of R32 refrigerant air conditioner”.
WARNING
Basically the outdoor unit has to be installed in outdoor area.
The outdoor unit has to be installed at least one side of 4 sides surrounding the unit open.
When installing indoors such as in a machine room, it shall be installed in accordance with IEC60335-2-40.
For other installation conditions, please contact the dealer where you purchased the product.
1580
or more
500+
h1
/2
or more
300+
h2
/2
or more
h2
1500 or less
In case
of 1500 mm
or more
In case
of 500 mm
or more
500 or less
h1
300+h2/2
or more
Front
side
When the obstacle exceeds the speci
fi
ed
value
Back
side
Front side (For work and service)
500+h1/2
or more
10 or more
At least one side
2) Indoor unit installation
For the installation of the indoor unit, refer to the installation manual attached to the indoor unit.
For the indoor unit installation of R32 air conditioning system, check the following before installing.
WARNING
• Appliance shall be installed, operated and stored in a room with a
fl
oor area larger than [A
min
] m
2
.
• For appliances using R32 refrigerant connected via an air duct system to one or more rooms, the supply and
return air shall be directly ducted to the space.
Open areas such as false ceilings shall not be used as a return air duct;
• No auxiliary devices, which may be a potential ignition source, shall be installed in the duct work.
(example: hot surfaces with a temperature exceeding 700°C and electric switching device)
• There shall be no operating ignition sources (example: open
fl
ames, an operating gas appliance or an operating
electric heater) in case the
fl
oor area is less than the minimum
fl
oor area A (m²).
For the applicable
fl
oor area and minimum
fl
oor area [A
min
], refer to [ 1 ] to [ 5 ] below.
• Piping shall be installed according to the instructions in “8 Refrigerant piping”.
The length of the connection pipe, types of Flow Selector unit and Shut-off Valve unit etc. are determined by the
indoor
fl
oor area.
[ 1 ] [Con
fi
rmation of installation space and
fl
oor area]
• Make sure that the installation height and
fl
oor area of each indoor unit type meet the installation height and
fl
oor
area speci
fi
ed by the total system refrigerant amount.
• Please refer to the attached “Installation data” for the numerical values of line A and line B in the graphs below.
(a)
(a)
(a)
(b)
(b)
(c)
(c)
(d)
(d)
(d)
Total system refrigerant (kg)
Minimum
fl
oor area A
min
[m
2
]
Ceiling mounted type (include duct type)
Minimum
fl
oor area A
min
[m
2
]
Hot water module
Other
fl
oors
The lowest
fl
oor of the basement
Minimum
fl
oor area A
min
[m
2
]
Wall mount and under ceiling Type
Line B
Line B
Line A
Line A
Line A
Total system refrigerant (kg)
Total system refrigerant (kg)
Other than the lowest basement
fl
oor
The lowest
fl
oor of the basement
LFL threshold
Area (a)
No safety measured required.
No safety measured required.
A large space of LFL/4 or less.
Area (b)
Leak detector required.
Leak detector and safety shut-off
valve required.
A large space of LFL/4 - LFL/2.
Area (c)
Leak detector and safety shut-off
valve required.
Installation not permitted.
A narrow space of LFL/2 or more.
Area (d)
Installation not permitted.
Installation not permitted.
Maximum allowable total
refrigerant amount determined
from LFL.
