Daikin VRV 5 RXYA8A7Y1B Installer And User Manual page 70

16 | Special requirements for R32 units
Installer and user reference guide
70
Use the total amount of refrigerant in the system and the smallest area of the
room in which the indoor unit is installed/conditioning to check which safety
measure is required.
Note: When "No safety measure" is required, it is still allowed to apply natural
ventilation or alarm or shut-off valve (SV unit) if wanted. Follow the respective
instructions as described further below.
Note: When natural ventilation is required, it is still allowed to apply alarm or shut-
off valve (SV unit) if wanted. Follow the respective instructions as described further
below.
Note: When alarm + natural ventilation is required as safety measure in other
floors, it is also allowed to apply alarm + shut-off valve (SV unit). Follow the
instructions described further below.
Use the first graph (Lowest underground floor
conditioning in the lowest underground floor of a building. For other floors, use the
second graph (All other floors
OTHER FLOORS
LOWEST UNDERGROUND FLOOR
The graphs and table are based on an installation height of the indoor unit
between 1.8 m and 2.2 m (bottom of the indoor unit or bottom of the duct
openings). See "17.1.1 Installation site requirements of the outdoor
If the installation height is more than 2.2 m, different boundaries for the applicable
safety measures can apply. To know which safety measure is required in case the
installation height is more than 2.2 m, refer to the online tool
NOTICE
Indoor units and the bottom of duct openings cannot be installed lower than 1.8 m
from the lowest point of the floor.
Example
The total amount of refrigerant in the VRV system is 20 kg. All indoor units are
installed in spaces that do NOT belong to the lowest underground floor of the
building. The space in which the first indoor unit is installed has a room area of
50 m², the space in which the second indoor unit is installed has a room area of
15 m².
▪ Based on the graph for "All other floors" (All other floors), the room area limit is
40 m² for No safety measure" (No safety measures).
▪ This means that the following safety measures are required:
SV unit Room area
1 A=50 m²≥40 m²
(a)
) in case the indoor unit is installed/
(b)
).
Required safety measure
No safety measures
4
unit" [ 82].
(VRV Xpress).
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12