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12-EN
11-EN
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Accessory parts
Part name
Q’ty
Shape
Usage
Installation Manual
1
Booklet
Hand this directly to the customer.
Drain connector
1
Waterproof rubber cap
2
3
Installation of new refrigerant air
conditioner
CAUTION
New refrigerant air conditioner installation
• This air conditioner adopts the new HFC refrigerant (R410A) which does not destroy ozone layer.
R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because the
working pressure of R410A refrigerant is approx. 1.6 times as that of refrigerant R22. Accompanied with the
adoption of the new refrigerant, the refrigerant oil has also been changed. Therefore, during installation work,
be sure that water, dust, former refrigerant, or refrigerant oil does not enter the new type refrigerant R410A air
conditioner cycle.
To prevent mixing of refrigerant or refrigerant oil, the sizes of connecting sections of charging port on main unit
and installation tools are different from those of the conventional refrigerant units. Accordingly, special tools are
required for the new refrigerant (R410A) units. For connecting pipes, use new and clean piping materials with high
pressure fittings made for R410A only, so that water and/or dust does not enter.
Required Tools / Equipment and precautions for use
Prepare the tools and equipment listed in the following table before starting the installation work.
Legend
: R410A exclusive
: Generic
Tools / equipment
Use
Manifold gauge
Vacuuming/charging
refrigerant and operation check
Charging hose
Gas leak detector
Gas leak check
Vacuum pump with backflow
prevention function
Vacuum drying
Flare tool
Flare machining of pipes
Usable if dimensions are adjusted.
Bender
Bending pipes
Refrigerant recovery equipment
Refrigerant recovery
Torque wrench
Tightening flare nuts
Ø1/4” (6.4 mm) and Ø1/2” (12.7 mm)
Pipe cutter
Cutting pipes
Brazing torch and nitrogen
cylinder
Braze pipes
Refrigerant charging scales
Charging refrigerant
4 mm hexagon wrench
Opening liquid valve
EN
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