Daikin VRV 5-S - To Determine the Required Safety Measures

16 | Special requirements for R32 units
Installer and user reference guide
63
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752782-1A – 2024.02
Examples
1 Remote controller is not R32 safety system compatible.
a
b
d
c
e
c
a
b
2 Indoor units without remote controller are not allowed.
c c c
a
b
e
c
e
c
e
c
e
a b
a Outdoor unit
b SV unit
c Indoor unit
d Remote controller NOT compatible with R32 safety system
e Remote controller compatible with R32 safety system
NOT allowed
Allowed
16.3 To determine the required safety measures
Step1 – Determine the total amount of refrigerant in the system. Use the values
on the unit nameplate to determine the total amount of refrigerant in the system.
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
1000
GWP × kg
=
=
+
kg
=
kg
=
GWP: xxx
R32
Total charge=Factory charge
(a)
+additional charge
(b)
(a)
The factory charge value can be found on the nameplate.
(b)
The R value (additional refrigerant to be charged) is calculated in "19.4To determine the
additional refrigerant amount"[4110].
NOTICE
The total refrigerant charge amount in the system MUST always be lower than
79.8kg.
Step2 – 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
The room area can be determined by projecting the walls, doors and partitions to
the floor and calculating the enclosed area. Spaces connected by only false ceilings,
ductwork, or similar connections are not considered a single space.
Step 3 – Use the graphs or tables below to determine the required safety
measures for the indoor unit.