Adoption of New Refrigerant
This Air Conditioner is a new type which adopts a new refrigerant HFC (R32) instead of the conventional
refrigerant R22 in order to prevent destruction of the ozone layer.
WARNING
Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to
have a service person do it. Do not attempt it yourself.
The cleaning diagram for the air filter is there for the service person, and not for the customer.
CONTENTS
SAFETY CAUTION ............................................................................................. 4
1.
SPECIFICATIONS ................................................................................... 13
2.
CONSTRUCTION VIEWS (EXTERNAL VIEWS) .................................... 17
3.
SYSTEMATIC REFRIGERATING CYCLE DIAGRAM ........................... 20
4.
WIRING DIAGRAM ................................................................................. 21
5.
SPECIFICATIONS OF ELECTRICAL PARTS ........................................ 22
NOTE
A direct current motor is adopted for indoor fan motor in the Concealed Duct Standard Type air conditioner.
Caused from its characteristics, a current limit works on the direct current motor. When replacing the high-
performance filter or when opening the service board, be sure to stop the fan. If an above action is
executed during the fan operation, the protective control works to stop the unit operation, and the check
code “P12” may be issued. However it is not a trouble. When the desired operation has finished, be sure to
reset the system to clear “P12” error code using the leak breaker of the indoor unit. Then push the opera-
tion stop button of the remote controller to return to the usual operation.
6.
REFRIGERANT R32 ............................................................................... 23
6-1. Safety During Installation / Servicing ..............................................................23
6-2. Refrigerant Piping Installation .........................................................................23
6-3. Tools ...................................................................................................................27
6-4. Recharging of Refrigerant ................................................................................27
6-5. Brazing of Pipes ................................................................................................28
6-6. Instructions for Re-use Piping of R22 or R407C.............................................30
6-7. Replenishing refrigerant ...................................................................................33
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