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7
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Piping installation
7.4.6 To charge additional refrigerant
7.4.7 To fix the fluorinated greenhouse gases label
Installer reference guide
44
WARNING
▪
Only use R32 as refrigerant. Other substances may cause explosions and
accidents.
▪
R32 contains fluorinated greenhouse gases. Its global warming potential (GWP)
value is 675. Do NOT vent these gases into the atmosphere.
▪
When charging refrigerant, ALWAYS use protective gloves and safety glasses.
NOTICE
To avoid compressor breakdown, do NOT charge more than the specified amount of
refrigerant.
Prerequisite: Before charging refrigerant, make sure the refrigerant piping is
connected and checked (leak test and vacuum drying).
1 Connect the refrigerant cylinder to the service port.
2 Charge the additional refrigerant amount.
3 Open the gas stop valve.
If pump down is needed in case of dismantling or relocating the system, see
"14.2 To pump
down" [
4
1 Fill in the label as follows:
Contains fluorinated greenhouse gases
RXXX
f
GWP: XXX
2
1
+
1
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
Formula to calculate the quantity in CO
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 near the gas and liquid stop
valves.
59] for more details.
a
kg
b
1
=
kg
c
2
=
d
kg
2
=
=
e
tCO
eq
2
equivalent.
2
equivalent.
2
equivalent tonnes: GWP value of the
2
4P751614-2 – 2023.09
R32 split series
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