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Installation of R32 refrigerant air conditioner
CAUTION
R32 refrigerant air conditioner installation
•
This air conditioner adopts the HFC refrigerant (R32) which does not destroy ozone layer.
Therefore, during installation work, make sure that water, dust, former refrigerant, or refrigerant oil does not enter
the R32 refrigerant air conditioner cycle. To prevent mixing of refrigerant or refrigerant oil, the sizes of connecting
sections of charge port on the main unit and installation tools are different from those of the conventional
refrigerant units.
Accordingly, special tools are required for the R32 or R410A refrigerant units. For connecting pipes, use new and
clean piping materials with high pressure fittings made for the R32 or R410A only, so that water and/or dust does
not enter.
•
When using existing piping, refer to “15 APPENDIX - [1] Existing piping”.
■
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
: Conventional tools (R32 or R410A)
: Prepared newly (Use for R32 only)
Tools / equipment
Use
How to use tools / equipment
Gauge manifold
Vacuuming / charging
refrigerant and operation check
Conventional tools (R410A)
Charging hose
Conventional tools (R410A)
Charging cylinder
Can not be used
Unusable (Use the electronic refrigerant charging
scale)
Gas leak detector
Charging refrigerant
Conventional tools (R32 or R410A)
Vacuum pump
Vacuum drying
Conventional tools (R32 or R410A)
Usable if the backflow prevention adapter is
installed.
Vacuum pump with backflow
prevention function
Vacuum drying
Conventional tools (R32 or R410A)
Flare tool
Flare machining of pipes
Conventional tools (R410A)
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Accessory parts
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Installation Manual
1
This manual
Hand this directly to the customer.
(For other languages that do not appear in this Installation Manual,
please refer to the enclosed CD-R.)
CD-ROM
1
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Installation Manual
Drain nipple
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Waterproof rubber cap
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15-EN
16-EN
