Accessory Parts; Installation Of New Refrigerant Air Conditioner - Toshiba RAV-SM304ATP-E Installation Manual

2

Accessory parts

Part name Q'ty Shape
Installation Manual 1 This manual
CD-ROM 1 —
Drain nipple 1
Waterproof rubber cap 2
9-EN
Usage
Hand this directly to the customer.
(For other languages that do not appear in this Installation Manual,
please refer to the enclosed CD-R.)
Installation Manual
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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 circuit.
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.
Newly prepared tools and equipment must be used exclusively.
Legend
: Prepared newly (Use for R410A only. Do not use for refrigerant R22 or R407C etc..)
: Conventional tools / equipment are available
Tools / equipment
Gauge manifold
Vacuuming / charging
refrigerant and operation check
Charging hose
Charging cylinder Can not be used
Gas leak detector Gas leak check
Vacuum pump Vacuum drying
Vacuum pump with backflow
Vacuum drying
prevention function
Flare tool Flare machining of pipes
Bender Bending pipes
Refrigerant recovery equipment Refrigerant recovery
Torque wrench Tightening flare nuts
Pipe cutter Cutting pipes
Welding machine and nitrogen
Welding pipes
cylinder
Refrigerant charging measure Charging refrigerant
Use How to use tools / equipment
Prepared newly for R410A only
Prepared newly for R410A only
Unusable (Use the refrigerant charging measure instead.)
Prepared newly
Unusable
R22
Usable if dimensions are adjusted.
R22
For R410A only
Exclusive for Ø12.7 mm
R22
R22
R22
10-EN