Daikin VRV II Series, Design, Installation & Testing Instructions, Page: 43 / 242

Si39-303 Installation
General Information 37
<*Non-azeotropic refrigerants or Quasi-azeotropic refrigerants>
When a refrigerant is a mixture of two or more types with different evaporation temperature, it is called a
non-azeotropic refrigerant. If all refrigerant components evaporate at the same temperature, the mixture is
called an azeotropic refrigerant.
If a non-azeotropic refrigerant is charged into equipment in the gaseous state, the refrigerant components
that evaporate sooner than others enter the equipment, and the refrigerant that evaporate after others
remain in the refrigerant cylinder.
*Quasi-azeotropic mixture refrigerant: mixture of two or more refrigerants having similar boiling points.
Caution items
The following devices designed for R-22 cannot be used to charge the new refrigerants. Be sure to use the
devices specifically designed for the new refrigerants.
1. Charging cylinder...(Pressure resisting specification is different.)
2. Gauge manifold (including hose)...(same as above)