8
|
Charging refrigerant
Installer reference guide
46
RXM-A, ARXM-A
R32 split series
4P718129-3A – 2023.07
If pump down is needed in case of dismantling or relocating the system, see
64] for more details.
8.7 To check refrigerant piping joints for leaks after charging refrigerant
1
"7.3 Checking the refrigerant piping"
40].
2
Charge refrigerant.
3
Check for refrigerant leaks after charging (see below)
Tightness test of field-made refrigerant joints indoors
1
Use a leakage test method with a minimum sensitivity of 5 g of refrigerant/
year. Test leaks using a pressure of at least 0.25 times the maximum working
pressure (see "PS High" on the unit nameplate).
If a leak is detected
1
Recover the refrigerant, repair the joint, and repeat the test.
8.8 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 outdoor unit near the gas and liquid stop
valves.