Daikin VRV 5 RXYA8A7Y1B, Installer And User Manual

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16 | Special requirements for R32 units
Installer and user reference guide
72
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
16.3.1 Overview: flowchart
Procedure to check required
countermeasure for indoor unit
Determine the smallest area out of:
- the room where an indoor unit is installed,
- each of the rooms served by a ducted indoor
unit installed in a different room
Determine total amount of
refrigerant in the system.
See
Step 1
in above text
See Step 2 in above text
See Step 3 in
above text
See Step 3 in
above text
Determine required safety
measure based on ‘Lowest
underground floor’ of the graph
and table.
Determine required safety
measure based on ‘All other
floors’ of the graph and table.
A
min
[m²]
YES NO
Indoor unit installed/
conditioning on
lowest underground floor?
No safety measure
No safety measure Alarm
Natural ventilation
NOT allowed
Total charge amount [kg]
Alarm +
Natural ventilation
+
Alarm +
shut-off valve [SV unit]
+
OR OR
Note: The flowchart is an overview. Always refer to the full text mentioned in this manual for clear understanding and detailed
explanation.
16.4 Safety measures
16.4.1 No safety measure
When the room area is sufficiently large, no safety measures are required. This also
includes an indoor unit installed in the lowest underground floor.
Therefore the R32 safety system in the indoor unit in a sufficiently large room can
be deactivated (active by default) by changing the setting in the user interface as
shown below:
Field settings
No safety measure
Setting 1
st
code Function 2
nd
code Description
15/25 13 R32 leak safety
system setting 01 Disabled