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15 - MAINTENANCE
Refrigerant
These units are supplied with R-410A refrigerants, which
belongs to the A1 group, i.e. with high safety both in the mix
and also in the case of a leak.
Important: the type of refrigerant included in the unit can be
consulted on the nameplate.
Periodic check of tightness:
Only qualifi ed personnel must perform periodic leak testing, in
accordance with the regulation (EC) No. 517/2014.
● The frequency of checks is no longer related to the refrigerant
charge but to its global warming potential:
Charge kg x GWP = t CO2e
Carbon dioxide equivalency (t CO2e) is a quantity that
describes, for a given mixture and amount of greenhouse gas,
the amount in tons of CO
warming potential (GWP).
● Operators shall ensure that the unit is checked for leaks ad
minima according to the following frequency:
Equivalent charge
Environmental impact
(Equiv. tons)
t CO2e < 5
t CO2e 5 to 50
t CO2e 50 to 500
t CO2e > 500
● The following table shows the refrigerant charge and CO
equivalent tons (t CO2e) for each model:
Package version:
50NC series
022
Charge (kg)
Coming soon
Environmental
impact (t CO2e)
50NC series
064
Charge (kg)
2 x 7,45
2 x 7,75
Environmental
31,1
impact (t CO2e)
Split version with service valves (optional):
50NC series
022
Charge (kg)
Coming soon
Environmental
impact (t CO2e)
50NC series
064
Charge (kg)
2 x 8,10
2 x 8,40
Environmental
33,7
impact (t CO2e)
If the equivalent length of the refrigerant lines is greater than
7.5 meters, an additional charge per meter must be carried
out according to the following table:
that would have the same global
2
Frequency
(kg)
(months)
With
Without
R-410A
detector
detector
2,4
not subject to revision
2,4
24
23,9
12
239,5
6
028
038
042
8,6
9,4
2 x 5,65
17,9
19,6
074
086
106
2 x 7,90
Coming soon
32,4
33,1
028
038
042
9,2
10,1
2 x 6,25
19,3
21,0
074
086
106
2 x 8,55
Coming soon
35,0
35,7
Nominal diameter
Indoor section (cm
Liquid line charge (g/m)
Gas line charge (g/m)
● A logbook must be established for equipment subject
to periodic leak tests (verify the registration requirements
under national regulations). It should contain the quantity
and the type of fl uid present within the installation (added
and recovered), the quantity of recycled fl uid, regenerated or
destroyed, the date and output of the leak test, the designation
of the operator and its belonging company, etc. Contact your
local dealer or installer if you have any questions.
● All refrigerant charging, removal, and draining operations must
be carried out by a qualifi ed technician and with the correct
equipment for the unit. Any inappropriate handling can lead
to uncontrolled fl uid or pressure leaks.
● Limit the amounts stored in mechanical rooms. Cylinders
and tanks of refrigerant must be handled with care and signs
warning users of the related poisoning, fi re and explosion
hazards must be clearly visible.
● Refrigerant that reaches the end of its life must be collected
and recycled in accordance with applicable regulations.
Important: Always follow the recommendations given in
section 2.2 "Safety standards for refrigerant".
12
6
Filter drier
3
● The fi lter function is the preserve the cooling circuit clean and
without humidity, neutralizing
2
the acids that can be found in
the cooling circuit.
● Measure the diff erence in the
temperature of the pipes at the
058
drier inlet and outlet.
● If necessary, replace.
23,5
Oil separator (optional)
118
● The maximum equivalent length of the refrigerant line can
be 50 meters when the outdoor module is above. For longer
distances, up to 100 meters maximum, it is necessary to use
an oil separator per refrigerant circuit.
● During the fi rst few days of operation, check the oil level. If it
is insuffi cient, oil can be added (via the compressor Schrader
valve or the unit low-pressure valve).
058
Air coil
26,1
● Check that the coil is free from dust and grease.
118
● Cleaning the accumulated dust on the coil can be performed
using a soft-bristled brush or a vacuum cleaner perpendicular
to the fi ns or with a low-pressure water cleaner. Grease can
be removed with water with a degreaser. Do not put stress
on the fi ns as they could deform.
Use safety gloves for this task. Take care of the sharp
parts of the coil.
1/2"
5/8"
3/4"
7/8"
)
1,0
1,6
2,4
3,3
2
93,9
154,8 229,6 318,9 422,2 539,3
0,3
0,6
0,8
1,2
Filter drier
Charging valve
1"
1 1/8"
4,4
5,6
1,5
2,0
37
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