17
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Piping installation
Installer and user reference guide
94
R R8T7V1B
VRV IV heat pump for indoor installation
4P499898-1A – 2020.10
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.
17.4.5 Error codes when charging refrigerant
INFORMATION
If a malfunction occurs:
▪
In case of 5 HP: The error code is displayed on the user interface of the indoor
unit.
▪
In case of 8 HP: The error code is displayed on the compressor 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,
"23.3 Solving problems based on error
17.4.6 To fix the fluorinated greenhouse gases label
1
Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
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
2
equivalent.
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
equivalent.
Formula to calculate the quantity in CO
2
equivalent 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 compressor unit. There is a dedicated place
for it on the wiring diagram label.
