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16 Special requirements for R32 units
In this chapter
16.1 Installation space requirements
16.2 System layout requirements
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752782-1A - 2024.02
16.1
Installation space requirements.............................................................................................................................................
16.2
System layout requirements ..................................................................................................................................................
16.3
To determine the required safety measures .........................................................................................................................
16.3.1
Overview: flowchart...............................................................................................................................................
16.4
Safety measures......................................................................................................................................................................
16.4.1
No safety measure .................................................................................................................................................
16.4.2
Alarm ......................................................................................................................................................................
16.4.3
Natural ventilation .................................................................................................................................................
16.4.4
Shut-off valves........................................................................................................................................................
16.4.5
Overview: flowchart...............................................................................................................................................
16.5
Combinations of safety measures..........................................................................................................................................
WARNING
If the appliance contains R32 refrigerant, the floor area of the room in which the
appliance is stored shall be at least 429 m².
NOTICE
▪
The pipework shall be securely mounted and guarded protected from physical
damage.
▪
Keep the pipework installation to a minimum.
The VRV 5-S uses R32 refrigerant which is rated as A2L and is mildly flammable.
To comply with the requirements of enhanced tightness refrigerating systems of
the IEC 60335-2-40, this system is equipped with an alarm in the remote controller
and shut-off valves in the SV unit. Both safety measures are installation specific and
can be determined using the requirements mentioned in this manual. The SV unit
is prearranged for a ventilated enclosure as countermeasure. In case the
requirements of this manual are followed, no additional safety measures are
needed.
A big range of charge and room area combinations is allowed thanks to the
countermeasures that are implemented in the system by default.
Follow the installation requirements below to ensure that the complete system is
compliant to legislation.
Outdoor unit installation
The outdoor unit must be installed outside. For indoor installation of the outdoor
unit, additional measures can be necessary to comply with the applicable
legislation.
A terminal for external output is available in the outdoor unit. This SVS output can
be used when additional countermeasures are needed. The SVS output is a contact
on terminal X2M that closes in case a leak is detected, failure or disconnection of
an R32 sensor (located in the indoor unit or SV unit).
16
Special requirements for R32 units
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