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2.4
Application range
2.4.1 Qualified refrigerant and oil
Compressors
Qualified refrigerant
Qualified oil (factory
charged)
Servicing oil
Table 3: Qualified refrigerant and oil
Oil recharge values can be taken from the compressor nameplate or from Copeland Select software
available at www.copeland.com/en-gb/tools-resources.
NOTE: R290 is classified as A3 flammable refrigerant.
2.4.2 Application limits
CAUTION
Inadequate lubrication! Compressor breakdown! The superheat at the
compressor suction inlet must always be sufficient to ensure that no refrigerant
droplets enter the compressor. For a typical evaporator-expansion valve
configuration a minimum stable superheat of at least 10 K is required.
For application envelopes and technical data, please refer to Copeland Select software available at
www.copeland.com/en-gb.
2.4.3 PED category and maximum allowable pressure PS
The nameplate of the compressor contains information about the maximum allowable pressure PS,
the minimum and maximum allowed temperatures TS, the internal free volumes and the fluid groups
of the refrigerants qualified for the compressor model range. Values are given for both pressure
ranges on low- and high-pressure sides.
PS
Compressor
LP side
YB56K1G
14 bar(g)
YB64K1G
14 bar(g)
YB81K1G
14 bar(g)
YB97K1G
14 bar(g)
Table 4: Maximum allowable pressures, temperatures and internal free volumes
The PED category is assigned according to the Pressure Equipment Directive PED 2014/68/EU.
Requirements apply to the relevant pressure levels in the compressor when the product of "pressure
relative to the environment" by "related internal free volume" (P x V) exceeds given limits. When
calculating the PED category, the high- and low-pressure sides have to be calculated separately.
The highest of the calculation results is considered.
The PED category also depends on the fluid group of the refrigerants qualified for the compressor
model range, also shown on the nameplate. A distinction is made between refrigerants of fluid
group 1 (flammable) and fluid group 2 (non-flammable). The YB*K1G compressors covered in these
application guidelines are operated with A3 refrigerants (fluid group 1).
Compressors
YB*K1G
Table 5: PED class based on refrigerant and fluid group
4
YB*K1G
R290
PAG RLF 68 EP
PAG RLF 68 EP
PS
TS max.
HP side
LP side
32 bar(g)
32 bar(g)
32 bar(g)
32 bar(g)
Refrigerant
Fluid group
R290
1
Internal free volume
LP side
44 °C
11.8 L
44 °C
11.8 L
44 °C
12.7 L
44 °C
12.7 L
PED
class
II
AGL_Ref_ST_YBK1G_EN_Rev01
HP side
1.5 L
1.5 L
1.5 L
1.5 L
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