16 | Special requirements for R32 units
Installer and user reference guide
77
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752782-1A – 2024.02
16.5 Combinations of safety measures
It is possible to combine indoor units with different safety measures (no safety
measures, alarm and/or natural ventilation, alarm and shut-off valves) in the same
system.
Example
a Heat pump outdoor unit
b Safety valve unit (SV)
c Indoor unit with no safety measure
d Indoor unit with alarm safety measure
e Remote controller in normal mode (R32 safety deactivated)
f Remote controller in normal mode (R32 safety activated)
g Indoor unit with natural ventilation safety measure
h Indoor unit with alarm + natural ventilation safety measure
i Indoor unit with alarm + shut-off valves safety measure
Refrigerant piping
Interconnection and user interface wiring
Direct connection of indoor units to the outdoor unit