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16 Charging refrigerant
If
Too much refrigerant is
charged
The determined additional
refrigerant amount is not
reached yet
Charging refrigerant (in manual additional refrigerant charge
mode)
The remaining additional refrigerant charge can be charged by
operating the outdoor unit by means of the manual additional
refrigerant charge mode.
5 Connect as shown. Make sure valve A is closed.
p <
p >
A
b
c
a
R32
8 HP
d
a
Weighing scales
b
Refrigerant R32 tank (siphon system)
c
Vacuum pump
d
Refrigerant charge port (heat exchanger)
A
Valve A
NOTICE
The refrigerant charging port is connected to the piping
inside the unit. The unit's internal piping is already factory
charged with refrigerant, so be careful when connecting
the charge hose.
6 Open all outdoor unit stop valves. At this point, valve A must
remain closed!
7 Take all the precautions mentioned in "18 Configuration" [ 4 40]
and "19 Commissioning" [ 4 43] into account.
8 Turn on the power of the indoor units and outdoor unit.
9 Activate setting [2‑20] to start the manual additional refrigerant
charge mode. For details, see
settings" [ 4 42].
Result: The unit will start operation.
INFORMATION
The manual refrigerant charge operation will automatically
stop within 30 minutes. If charging is not completed after
30 minutes, perform the additional refrigerant charging
operation again.
10 Open valve A.
Installation and operation manual
36
Then
Recover refrigerant.
Disconnect the manifold from the
liquid line.
You do not have to perform the
"Charging refrigerant (in manual
additional refrigerant charge
mode)" instructions.
Disconnect the manifold from the
liquid line.
Continue with the "Charging
refrigerant (in manual additional
refrigerant charge mode)"
instructions.
d
10-12 HP
d
"18.1.7 Mode 2: field
11 Charge refrigerant until the remaining determined additional
refrigerant amount is added, and then close valve A.
12 Press BS3 to stop the manual additional refrigerant charge
mode.
NOTICE
Make sure to open all stop valves after (pre-) charging the
refrigerant.
Operating with the stop valves closed will damage the
compressor.
NOTICE
After adding the refrigerant, do not forget to close the lid of
the refrigerant charging port. The tightening torque for the
lid is 11.5 to 13.9 N•m.
16.4
Error codes when charging
refrigerant
INFORMATION
If a malfunction occurs, the error code is displayed on the
outdoor unit's 7‑segments display and on the user interface
of the indoor unit.
If a malfunction occurs, close valve A immediately. Confirm the
malfunction code and take corresponding action,
codes" [ 4 47].
problems based on error
16.5
To fix the fluorinated greenhouse
gases label
1 Fill in the label as follows:
Contains fluorinated greenhouse gases
RXXX
1
=
f
GWP: XXX
2
=
2
1
+
1
2
=
GWP × kg
=
1000
a
If a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of a.
b
Factory refrigerant charge: see unit name plate
c
Additional refrigerant amount charged
d
Total refrigerant charge
e
Quantity of fluorinated greenhouse gases of the total
refrigerant charge expressed as tonnes CO
f
GWP = Global Warming Potential
NOTICE
Applicable legislation on fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
Formula to calculate the quantity in CO
tonnes: GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
Use the GWP value mentioned on the refrigerant charge
label.
2 Fix the label on the inside of the outdoor unit. There is a
dedicated place for it on the wiring diagram label.
"22.1 Solving
a
kg
b
kg
c
d
kg
e
tCO
eq
2
equivalent.
2
equivalent.
equivalent
2
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752781-1B – 2024.02
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Troubleshooting
