Carrier 50FC 020-099, Installation, Operation And Maintenance Instructions, Page: 70 / 80

70
14 - MAINTENANCE
Main circuits:
Cooling recovery circuit (optional):
R-454B
Refrigerant
These units are supplied with one of these refrigerants:
■
R-410A: belongs to the A1/A1 group, i.e. with high safety both
in the mix and also in the case of a leak.
■
R-454B: belongs to the A2L group, that is, non-toxic and low
fl
ammability.
Caution: with A2L refrigerant, always use an A2L refrigerant
detector when near the unit.
Important: the type of refrigerant included in the unit can be
consulted on the name plate, see section 4.3.
Periodic check of tightness:
Only quali
fi
ed personnel must perform a 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 tonnes of CO
2
that would have the same global
warming potential (GWP).
■
Operators shall ensure that the unit is checked for leaks ad
minima according to the following frequency:
Equivalent charge
(kg)
Frequency
(months)
Environ. impact
(Equiv. tonnes)
R-410A R-454B
With
detector
Without
detector
t CO2e < 5 2,4 10,8 not subject to revision
t CO2e 5 to 50 2,4 10,8 24 12
t CO2e 50 to 500
23,9 108,5 12 6
t CO2e > 500 239,5 1084,6 6 3
Important: units with A2L refrigerant are always equipped
with a leak detector with infrared sensor. Consult the
chapter “Safety elements”.
■
The following table shows the refrigerant charge and CO
2
equivalent tonnes (t CO2e) for each model:
Main circuits:
R-410A
Additional charge of the optional active dehumidi
fi
cation:
Active dehumidification is equipped with an additional
condensation coil, in series with the main cooling circuit, to reheat
the air. In two-circuit units, the coil is incorporated in circuit 2.
Note: this option is not available for 50FC 099 model.
Cooling recovery circuit (optional):
50FC 020 028 037 040 045 047
Volume (l) C1: 2,5 C1: 2,5 C1: 2,5 C1: 3,4 C1: 3,4 C1: 3,4
50FC 052 058 062 070 074 086 093
Volume (l) C1: 2,5
C2: 2,5
C1: 2,5
C2: 2,5
C1: 2,5
C2: 2,5
C1: 2,5
C2: 2,5
C1: 3,4
C2: 3,4
C1: 3,4
C2: 3,4
C1: 3,4
C2: 3,4
50FC 020 028 037 040 045 047
Volume (l)
CR:
1,24
CR:
1,24
CR:
1,24
CR:
1,24
CR:
1,24
CR:
1,24
50FC 052 058 062 070 074 086 093
Volume (l)
CR:
1,24
CR:
1,24
CR:
1,24
CR:
1,72
CR:
1,72
CR:
1,72
CR:
1,72
50FF 020 028 037 040 045 047
Charge
(kg)
C1: 7,3 C1: 7,6 C1: 9,7 C1: 9,7 C1: 10,0 C1: 10,3
Environ.
impact
(t CO2e)
15,2 15,9 20,3 20,3 20,9 21,5
50FC 020 028 037 040 045 047 052
Charge
(kg)
C1: 8,0 C1: 8,3 C1: 11,0 C1: 11,0 C1: 11,3 C1: 11,6 C1: 6,3
C2: 6,3
Environ.
impact
(t CO2e)
16,7 17,3 23,0 23,0 23,6 24,2 26,1
50FF 052 058 062 070 074 086 093
Charge
(kg)
C1: 9,7 C1: 9,7 C1: 10,0 C1: 17,0 C1: 17,5 C1: 17,5 C1: 18,0
Environ.
impact
(t CO2e)
20,3 20,3 20,9 35,5 36,5 36,5 37,6
50FC 058 062 070 074 086 093 099
Charge
(kg)
C1: 6,4
C2: 6,4
C1: 6,5
C2: 6,5
C1: 10,0
C2: 10,0
C1: 10,2
C2: 10,2
C1: 10,2
C2: 10,2
C1: 10,3
C2: 10,3
C1: 11,0
C2: 11,4
Environ.
impact
(t CO2e)
26,7 27,1 41,8 42,4 42,4 42,8 42,8
50FF 020 028 037 040 045 047
Charge
(kg)
C1: 3,3 C1: 3,3 C1: 5,4 C1: 5,4 C1: 5,4 C1: 5,4
Environ.
impact
(t CO2e)
6,9 6,9 11,3 11,3 11,3 11,3
50FC 020 028 037 040 045 047
Charge
(kg)
C1: 4,9 C1: 4,9 C1: 4,6 C1: 4,6 C1: 4,6 C1: 4,6
Environ.
impact
(t CO2e)
10,2 10,2 9,6 9,6 9,6 9,6
50FF 052 058 062 070 074 086 093
Charge
(kg)
C1:10,5 C1:10,5 C1:10,5 C1:10,5 C1:10,5 C1:10,5 C1:10,5
Environ.
impact
(t CO2e)
21,9 21,9 21,9 21,9 21,9 21,9 21,9
50FC 052 058 062 070 074 086 093
Charge
(kg)
C2:11,2 C2:11,2 C2:11,2 C2:11,5 C2:11,5 C2:11,5 C2:11,5
Environ.
impact
(t CO2e)
23,4 23,4 23,4 24,0 24,0 24,0 24,0
50FF/FC 020 028 037 040 045 047 052
Charge
(kg)
CR: 1,7 CR: 1,7 CR: 2,5 CR: 2,5 CR: 2,5 CR: 2,5 CR: 3,0
Environ.
impact
(t CO2e)
3,5 3,5 5,2 5,2 5,2 5,2 6,3
50FF/FC 058 062 070 074 086 093 099
Charge
(kg)
CR: 3,0 CR: 3,0 CR: 3,4 CR: 3,4 CR: 3,4 CR: 3,4 CR: 3,4
Environ.
impact
(t CO2e)
6,3 6,3 7,1 7,1 7,1 7,1 7,1