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12 - FACTORY OPTIONS AND ACCESSORIES
12.15 - Cooling recovery circuit (BA and BB
assemblies)
Thermodynamic circuit dedicated to the recovery of the extracted
air energy, with independent and proportional control, adapted to
the air renewal requirements in order to raise the COP and EER
of the unit.
■ The circuit is composed of:
- Return EC plug-fan.
- Air circuit comprised of coils with copper pipes and aluminium
fi ns.
- Electronic expansion valve.
- Hermetic scroll-type compressor with sound insulation,
assembled over antivibration mounts.
- Crankcase heater.
- Four-way cycle reversing valve.
- Anti-acid dehydrator fi lter.
- High and low pressure transducers.
- Condensates drain pan, with a 1/2" M gas threaded plastic
drain connection.
Main
Recovery
circuit(s)
circuit
draining
draining
12.15.1 - Access to the recovery circuit
Models of 1 circuit (50FC 020 to 047 and 50FF 020 to 093):
Charging valve
60
Models of 2 circuits (50FC 052 to 093):
Recovery
compressor
Access panel to compressors
box on circuit 1
The charging valve, placed on the liquid line, is accessed via
the compressors box on circuit 2, removing the communication
panel between both circuits.
Access panel to
compressors box on circuit 2
The charging valve (schrader type) must be used to adjust
the refrigerant charge of the recovery circuit when this
one is lower than required.
12.15.2 - Characteristics of the recovery circuit
Compressor type
No. of compressors / circuits
Max. absorbed current (A)
Oil type
Volume of oil
Charge of R-410A
Recovery
Environment impact
compressor
Access panel to compressors
box on circuit 2
Charging
valve
020 to
50FF/FC
028
5,4
Copeland 3MAF 32cST, Danfoss
POE 160SZ, ICI Emkarate RL
32CF, Mobil EAL Artic 22CC
(l)
0,7
(kg)
1,7
(tCO2eq)
3,5
037 to
052 to
070 to
047
062
093
Scroll
1 / 1
7,2
10,1
12,1
1,2
1,7
1,8
2,5
3,0
3,4
5,2
6,3
7,1
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