Accessory Parts; Installation Of R32 Refrigerant Air Conditioner - Toshiba RAV-GM2241AT8-E Installationsanleitung

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Accessory parts

Part name Q'ty
Installation Manual 1
CD-ROM 1
Joint (Ø19.1 – Ø25.4 mm) 1
Joint (Ø25.4 – Ø28.6 mm) 1
Drain nipple 1
Waterproof rubber cap 5
Protective bush 1
Guard material for passage part 1
INFORMATION
• The main pipe on the gas side of this outdoor unit has a diameter of Ø28.6 mm, but a Ø19.1 mm flare connection
is used where the valve is connected. Be sure to use the Ø19.1 mm pipe and joint provided as accessories for
the pipe connection.
• Before installing the unit, check that the unit has the correct model name to prevent the wrong unit from being
installed in the wrong place.
• Before proceeding to weld the refrigerant pipe, be sure to pass nitrogen through the pipe.
• Before installing the indoor units, read the instructions in the installation manual provided with the indoor units.
• Before installing a branch pipe, read the instructions in the installation manual provided with the branch pipe kit.
• In the case of a simultaneous double twin system, use indoor unit with the same capacity for all four indoor units.
Branch pipe kit
RAV-GM224 RBC-DTWP101E
RAV-GM280 RBC-DTWP101E
• P.C. board settings are required for some of the indoor units if they are to be used in a twin, triple or double twin
system. Refer to the instructions in the installation manual of the branch pipe kit, and ensure that the settings are
selected correctly.
• Combination with the indoor units
Combination with the indoor units is possible only when units with the same type are combined. Combinations
of units with different types cannot be used.
• The concealed duct high static pressure type is used for a single connection (when connecting a single indoor
unit to the outdoor unit).
111-EN
Shape Usage
Hand this directly to the customer.
This manual
(For other languages that do not appear in this Installation
Manual, please refer to the enclosed CD-R.)
— Installation Manual
For connecting the pipe
For connecting the pipe
Type A (4 pcs.)
Type B (1 pc.)
For protecting wires (pipe cover)
For protecting passage part (pipe cover)
Combination indoor unit
RM56 × 4 units
RM80 × 4 units
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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
Gauge manifold
Vacuuming / charging
refrigerant and operation check
Charging hose
Charging cylinder Cannot be used
Gas leak detector Charging refrigerant
Vacuum pump Vacuum drying
Vacuum pump with backflow
Vacuum drying
prevention function
Flare tool Flare machining of pipes
Bender Bending pipes
Refrigerant recovery
Refrigerant recovery
equipment
Torque wrench Tightening flare nuts
Pipe cutter Cutting pipes
Refrigerant cylinder Charging refrigerant
Welding machine and
Welding pipes
nitrogen cylinder
Electronic refrigerant
Charging refrigerant
charging scale
– 56 –
Use How to use tools / equipment
Conventional tools (R410A)
Conventional tools (R410A)
Unusable (Use the electronic refrigerant charging
scale)
Conventional tools (R32 or R410A)
Conventional tools (R32 or R410A)
Usable if the backflow prevention adapter is installed.
Conventional tools (R32 or R410A)
Conventional tools (R410A)
Conventional tools (R410A)
Conventional tools (R32 or R410A)
Conventional tools (R410A)
Conventional tools (R410A)
Prepared newly (Use for R32 only)
Conventional tools (R410A)
Conventional tools (R32 or R410A)
112-EN