Overview: Flowchart; Safety Measures; No Safety Measure - Daikin VRV 5 RXYA8A7Y1B Installer And User Manual

16 | Special requirements for R32 units

16.3.1 Overview: flowchart

Determine required safety
measure based on 'All other
floors' of the graph and table.

No safety measure

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

Installer and user reference guide
72
Procedure to check required
countermeasure for indoor unit
Determine total amount of
refrigerant in the system.
Total charge amount [kg]
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
A
min
NO
Indoor unit installed/
lowest underground floor?
See Step 3 in
above text
Alarm +
Natural ventilation
+
OR
Alarm +
shut-off valve [SV unit]
+
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
Setting 1
15/25
[m²]
YES
conditioning on
Determine required safety
measure based on 'Lowest
underground floor' of the graph
and table.
No safety measure
No safety measure
st
code Function
13 R32 leak safety
system setting
See Step 1 in above text
See Step 2 in above text
See Step 3 in
above text
NOT allowed
Alarm
OR
Natural ventilation
nd
2 code Description
01 Disabled
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12