15
• 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.
NOTE
• 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.
(2) After piping work is finished, check drainage flows
smoothly.
• Open the water inlet lid, add approximately 61 in
3
of water
gradually and check drainage flow.
[ 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”)
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.
• You can check whether drainage is satisfactory or not by
removing the access opening lid and checking the water
level of the drain pan through the access opening.
• Be careful when doing so because the fan is turning at
the same time.
8. ELECTRIC WIRING WORK
8-1 GENERAL INSTRUCTIONS
• All field supplied parts and materials, electric works must
conform to local codes.
• Use copper wire only.
• Follow the “WIRING DIAGRAM” attached to the unitbody to
wire the outdoor unit, indoor units and the remote controller.
For details on hooking up the remote controller, refer to the
“INSTALLATION MANUAL OF 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 mismatched, the system may cause a malfunction.
• A circuit breaker capable of shutting down the power supply
to the entire system must be installed.
8-2 ELECTRICAL CHARACTERISTICS
MCA:Min. Circuit Amps (A); MFA:Max. Fuse Amps (A)
A (in.)
When canvas duct is installed
13 3/4 – 20 7/8
When air inlet panel is directly installed
10 13/16
Units
Power
supply
Fan motor
Model
Hz
Volts
Volt-
age
range
MCA MFA
W
FLA
FXSQ12MVJU
60
208-
230
Max.
253
Min.
187
0.7
15
50
0.6
FXSQ18MVJU
1.0
15
85
0.8
FXSQ24MVJU
1.4
15
125
1.1
FXSQ30MVJU
1.8
15
225
1.4
FXSQ36MVJU
1.8
15
225
1.5
FXSQ48MVJU
2.4
15
225
2.0
