English
7
• If converging multiple drain pipes, install according to the
procedure shown below.
Select converging drain pipes whose gauge is suitable for the
operating capacity of the unit.
(2)
After piping work is finished, check drainage flows
smoothly.
• Open the inspection opening, add approximately 1liter of
water slowly into the drain pan and check drainage flow.
NOTE
• Use the drain outlet for maintenance to drain water from the
drain pan.
WHEN ELECTRIC WIRING WORK IS FINISHED
• Check drainage flow during COOL running, explained under
“TEST OPERATION”.
WHEN ELECTRIC WIRING WORK IS NOT FINISHED
• Remove the electric parts box lid, connect a power supply
and remote controller to the terminals.
(Refer to the
HOW TO CONNECT WIRINGS
(P.8))
Be sure attach the electric parts box lid before turning on the
power.
Next, press the inspection/test operation button “
” on the
remote controller. The unit will engage the test operation mode.
Press the operation mode selector button “
” until selecting
FAN OPERATION “
”. Then, press the ON/OFF button
“
”. The indoor unit fan and drain pump will start up. Check
that the water has drained from the unit. Press “
” to go
back to the first mode.
CAUTION
• Drain piping connections
Do not connect the drain piping directly to sewage pipes that
smell of ammonia. The ammonia in the sewage might enter
the indoor unit through the drain pipes and corrode the heat
exchanger.
• Keep in mind that it will become the cause of getting drain
pipe blocked if water collects on drain pipe.
8.
ELECTRIC WIRING WORK
8-1
GENERAL INSTRUCTIONS
• All field supplied parts and materials and electric works must
conform to local codes.
• Use copper wire only.
• For electric wiring work, refer to also “Wiring diagram label”
attached to the electric parts box lid.
• For remote controller wiring details, refer to the installation
manual attached to the remote controller.
• All wiring must be performed by an authorized electrician.
• This system consists of multiple indoor units. Mark each indoor
unit as unit A, unit B . . . , and be sure the terminal board wiring
to the outdoor unit and BS unit are properly matched. If wiring
and piping between the outdoor unit and an indoor unit are mis-
matched, the system may cause a malfunction.
• A circuit breaker capable of shutting down power supply to
the entire system must be installed.
• Refer to the installation manual attached to the outdoor unit
for the size of power supply electric wire connected to the
outdoor unit, the capacity of the circuit breaker and switch,
and wiring instructions.
• Be sure to ground the air conditioner.
• Do not connect the ground wire to gas and water pipes, light-
ning rods, or telephone ground wires.
• Gas pipes : might cause explosions or fire if gas leaks.
• Water pipes : no grounding effect if hard vinyl piping is used.
• A circuit breaker capable of shutting down the power sup-
ply to the entire system must be installed.
≥100mm
T-joint converging drain pipes
Inspection opening
Portable pump
Bucket
Drain outlet for maintenance
(with rubber plug)
TEST
TEST
PC board
Copper wire
Electric parts box lid.
Power supply
terminal board
Power supply
1-220-240V
L N
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