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FILE NO. SVM-06021
8. INSTALLATION PROCEDURE
8-1. Safety Cautions
CAUTION
•
THIS AIR CONDITIONER USES THE NEW HFC REFRGERANT (R-410A), WHICH DOES NOT
DESTROY THE OZONE LAYER.
R-410A refrigerant is apt to be affected by impurity such as water, oxidizing membranes, and oils because
the pressure of R-410A refrigerant is approx. 1.6 times of refrigerant R-22. As well as the adoption of this
new refrigerant, refrigerating machine oil has also been changed. Therefore, during installation work, be sure
that water, dust, former refrigerant, or refrigerating machine oil does not enter into the refrigerating cycle of a
new-refrigerant air conditioner.
To avoid mixing refrigerant and refrigerating machine oil, the sizes of charging port connecting sections on
the main unit are different from those for the conventional refrigerant, and different size tools are also
required. Accordingly, special tools are required for the new refrigerant (R-410A) as shown below. For
connecting pipes, use new and clean piping materials with high-pressure withstand capabilities, designed for
R-410A only, and ensure that water or dust does not enter. Moreover, do not use any existing piping as its
pressure withstand may be insufficient, and may contain impurities.
New Refrigerant Air conditioner Installation
For general public use
Power supply cord of Outdoor unit shall be more than 4 mm
2
(H07RN-F or 245IEC66 : polychloroprene
sheathed flexible cord) or 3.5 mm
2
(AWG-12).
CAUTION
This appliance must be connected to the main power supply by means of a circuit breaker or a switch with a
contact separation of at least 3 mm.
If this is not possible, a power supply plug with earth must be used. This plug must be easily accessible after
installation. The plug must be disconnected from the power supply socket in order to disconnect the
appliance completely from the mains.
To Disconnect the Appliance from the Main Power Supply
