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Special requirements for R32 units
Installer and user reference guide
60
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07
16 Special requirements for R32 units
In this chapter
16.1 Installation space requirements
WARNING
If the appliance contains R32 refrigerant, the floor area of the room in which the
appliance is stored shall be at least 956 m².
NOTICE
▪
Protect pipework from physical damage.
▪
Keep the pipework installation to a minimum.
16.2 System layout requirements
The VRV 5 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 shut-off valves in the BS unit and
an alarm in the remote controller. The BS 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 has to 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 BS unit).
For more information about the SVS
output, see
Indoor unit installation
For installation of the indoor unit, refer to the installation and operation manual
delivered with the indoor unit. For compatibility of indoor units refer to the latest
version of the technical data book of this unit.
