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Applying
area of
Hard PVC side
adhesive
0.16 in (4 mm) or less
Wrap the drain hose insulation around the drain hose connection.
Drain pan
Hose opening view
Wind the attached heat insulation
around the hose band. Make sure
the alignment is on top.
After installing the drain hose, check if the drainage is smooth.
GOOD
Install the drain pipe
(1) Main drain
On the main drain, provide 1 trap
near the indoor unit.
H1= 3-15/16 in (100 mm) (Approx.)
H2= 1-15/16 to 3-15/16 in (50 to
100 mm)
(2) Safety drain
There is no need to provide a trap
for the safety drain. If the safety
drain is connected to the main drain,
make the connection below the
main trap.
• Make sure that drain pipe is installed without rises.
• Do not perform air bleeding.
En-7
Joint pipe
(locally purchased)
Drain pipe (locally purchased)
Φ 3/4 in (19 mm) [I.D.], Φ 1-1/16 in (27 mm) [O.D.]
Drain hose insulation
(accessories)
Drain hose
3-15/16 in
(100 mm)
Downward gradi-
ent 0.10 to 0.19 in
(2.5 to 5.0 mm)
PROHIBITED
Unit
Trap
Unit
Safety
PROHIBITED
Rise
Air bleeding
Rise
Be sure to properly insulate the drain pipes.
Make sure the drain water is properly drained.
6. ELECTRICAL WIRING
Electrical work must be performed in accordance with this Manual by a person certified
under the national or regional regulations. Be sure to use a dedicated circuit for the unit.
An insufficient power supply circuit or improperly performed electrical work can cause
serious accidents such as electric shock or fire.
Before starting work, check that power is not being supplied to the all units.
Use the included connection cables and power cables or ones specified by the manu-
facturer. Improper connections, insufficient insulation, or exceeding the allowable current
can cause electric shock or fire.
For wiring, use the prescribed type of cables, connect them securely, making sure that
there are no external forces of the cables applied to the terminal connections. Improp-
erly connected or secured cables can cause serious accidents such as overheating the
terminals, electric shock, or fire.
Do not modify the power cables, use extension cables, or use any branches in the wir-
ing. Improper connections, insufficient insulation, or exceeding the allowable current can
cause electric shock or fire.
Match the terminal board numbers and connection cable colors with those of the out-
door unit (or RB unit). Erroneous wiring may cause burning of the electric parts.
Securely connect the connection cables to the terminal board. In addition, secure the
cables with wiring holders. Improper connections, either in the wiring or at the ends of
the wiring, can cause a malfunction, electric shock, or fire.
Always fasten the outside covering of the connection cable with the cable clamp. (If the
insulator is chafed, electric discharge may occur.)
Securely install the electrical box cover on the unit. An improperly installed electrical box
cover can cause serious accidents such as electric shock or fire through exposure to
dust or water.
Install sleeves into any holes made in the walls for wiring. Otherwise, a short circuit
could result.
We suggest installing GFEB breakers or follow local electrical code.
When installing this system, install using ground fault equipment breakers (GFEB) to
reduce the risk of leaking current which result in electric shock or potential fire.
Always connect the earth (ground) cable.
Improper earthing (grounding) work can cause electric shocks.
Install the remote controller cables so as not to be direct touched with your hand.
Perform wiring work in accordance with standards so that the air conditioner can be
operated safely and positively.
Connect the connection cable firmly to the terminal board. Imperfect installation may
cause a fire.
If the supply cable is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
Earth (Ground) the unit.
Do not connect the earth (ground) cable to a gas pipe, water pipe, lightning rod, or a
Drain pipe
telephone earth (ground) cable.
Improper earthing (grounding) may cause electric shock.
Do not connect power supply cables to the transmission or remote controller terminals,
as this will damage the product.
Never bundle the power supply cable and transmission cable, remote controller cable
together.
Separate these cables by 2 in (50 mm) or more.
Bundling these cables together will cause miss operation or breakdown.
When handling PCB, static electricity charged in the body may cause malfunction of the
Main
PCB. Follow the cautions below:
• Establish an earth (ground) for the indoor and outdoor units and peripheral devices.
• Cut power (breaker) off.
• Touch metal part of the indoor unit for more than 10 seconds to discharge static elec-
tricity charged in the body.
• Do not touch terminals of parts and patterns implemented on PCB.
Drain pipe
6.1. Electrical requirement
• Select the power cable type and size
in accordance with relevant local and
national regulations.
• Specifications for local wiring power cord and branch wiring are in compliance with local
code.
• Select the correct cable type and size according to the country or region's regulations.
• Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the wire
diameter when the wire length is long.
CAUTION
WARNING
CAUTION
Voltage rating
208 / 230 V
Operating range
187 to 253 V
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