Daikin RZQ125B7W1B [14/326] Precautions on handling new refrigerants

Daikin RZQ125B8V3B [14/326] Precautions on handling new refrigerants
Introduction ESIE05-03
iv
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5
1.3 Precautions on Handling New Refrigerants
1.3.1 Outline
About Refrigerant
R410A
P Characteristics of new refrigerant, R410A
1 Performance
Almost the same performance as R22 and R407C.
2 Pressure
Working pressure is approx. 1.4 times more than R22 and R407C.
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 1 0.19716 kgf / cm
2
HFC units (Units using new refrigerants) HCFC units
Refrigerant name R407C R410A R22
Composing
substances
Non-azeotropic mixture
of HFC32, HFC125 and
HFC134a (*1)
Quasi-azeotropic mix-
ture of HFC32 and
JFC125 (*1)
Single-component refrig-
erant
Design pressure 3.2 Mpa (gauge pres-
sure) = 32.6 kgf/cm
2
4.15 Mpa (gauge pressure)
= 42.3 kgf/cm
2
2.75Mpa (gauge pressure)
= 28.0 kgf/cm
2
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%)
ESIE05-03.book Page iv Wednesday, April 6, 2005 4:09 PM

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