Daikin SV1A25AJV1B - 13 Special Requirements for R32 Units; Installation Space Requirements; System Layout Requirements

13 | Special requirements for R32 units
Installer and user reference guide
44
SV1A25AJV1B+SV4~8A14AJV1B
VRV 5 safety valve unit
4P749917-1 – 2023.09
13 Special requirements for R32 units
In this chapter
13.1 Installation space requirements............................................................................................................................................. 44
13.2 System layout requirements .................................................................................................................................................. 44
13.3 To determine the required safety measures ......................................................................................................................... 45
13.3.1 Overview: flowchart ............................................................................................................................................... 48
13.4 Safety measures...................................................................................................................................................................... 49
13.4.1 No safety measure ................................................................................................................................................. 49
13.4.2 External alarm ........................................................................................................................................................ 49
13.4.3 Natural ventilation ................................................................................................................................................. 50
13.4.4 Ventilated enclosure .............................................................................................................................................. 52
13.4.5 Overview: flowchart ............................................................................................................................................... 59
13.5 Combinations of ventilated enclosure configurations........................................................................................................... 60
13.6 Combinations of safety measures .......................................................................................................................................... 61
13.1 Installation space requirements
NOTICE
▪ The pipework shall be securely mounted and guarded protected from physical
damage.
▪ Keep the pipework installation to a minimum.
13.2 System layout requirements
The VRV 5 heat pump 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 SV unit and
an alarm in the remote controller.
The safety measures that are needed for the SV unit are explained in more detail
below. If they are followed, no additional safety measures for the SV unit are
required. Carefully follow the installation requirements for the SV unit as explained
in this manual. Follow the installation requirements described in the outdoor unit
and indoor unit installation and operation manuals to ensure that the complete
system is compliant with legislation.
Outdoor unit installation
For installation of the outdoor unit, see the installation and operation manual
delivered with the outdoor unit.
Indoor unit installation
Room area limitations apply for the indoor units. Details are explained in the
installation and operation manual delivered with the outdoor unit. For installation
of the indoor unit, see the installation and operation manual delivered with the
indoor unit. For compatibility of indoor units, see the latest version of the technical
data book of the outdoor unit.