SiUS28-902
Precautions for New Refrigerant (R-410A)
Precautions for New Refrigerant (R-410A)
170
1. Precautions for New Refrigerant (R-410A)
1.1
Outline
1.1.1 About Refrigerant R-410A
Characteristics of new refrigerant, R-410A
1. Performance
Almost the same performance as R-22 and R-407C
2. Pressure
Working pressure is approximately 1.4 times more than R-22 and R-407C.
3. Refrigerant composition
Few problems in composition control, since it is a Quasi-azeotropic mixture refrigerant.
1. Non-azeotropic mixture refrigerant: mixture of two or more refrigerants having different
boiling points.
2. Quasi-azeotropic mixture refrigerant: mixture of two or more refrigerants having similar
boiling points.
3. The design pressure is different at each product. Please refer to the installation manual for
each product.
(Reference) 1 MPa
10.19716 kgf / cm
2
1 MPa
145 psi
HFC units (Units using new refrigerants)
HCFC units
Refrigerant name
R-407C
R-410A
R-22
Composing
substances
Non-azeotropic mixture
of HFC32, HFC125 and
HFC134a (*1)
Quasi-azeotropic mixture
of HFC32 and JFC125
(*1)
Single-component
refrigerant
Design pressure
3.2 MPa (gauge pressure)
= 32.6 kgf/cm
2
= 464 psi
4.0 MPa
(gauge
pressure)
= 40.8 kgf/cm
2
= 580 psi
2.75MPa
(gauge pressure)
= 28.0 kgf/cm
2
= 399 psi
Refrigerant oil
Synthetic oil (Ether)
Mineral oil (Suniso)
Ozone destruction
factor (ODP)
0
0
0.05
Combustibility
None
None
None
Toxicity
None
None
None
Pressure-Enthalpy curves of HFC-32/125 (50/50wt%)
Summary of Contents for SkyAir FCQ18PVJU
Page 1: ...Split System Air Conditioners SkyAir Inverter R 410A Heat Pump 60Hz P Series SiUS28 902_a...
Page 44: ...Other Control SiUS28 902_a 37 Function...
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