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■ 

Preparing the indoor unit's piping and drain
hose for installation through the wall.

■

Remove the plastic tubing retainer(see
illustration below) and pull the tubing and
drain hose away from chassis.

■

Replace the plastic tubing holder in the
original position.(Optional)

Main cause for refrigerant leakage is due to defect
in the flaring work. Carry out correct flaring work
using the following procedure.

■

Use the piping kit accessory or pipes
purchased locally.

■

Measure the distance between the indoor and
the outdoor unit.

■

Cut the pipes a little longer than the measured
distance.

■

Cut the cable 1.5m longer than the pipe length.

■

Completely remove all burrs from the cut
cross section of pipe/tube.

■

Put the end of the copper tube/pipe in a
downward direction as you remove burrs in
order to avoid dropping burrs into the tubing.

■

Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.
(not possible to put them on after flaring work)

Copper

pipe

90¡

Slanted   Uneven  Rough

Pipe

Reamer

Point down

■

Carry out flaring work using flaring tool as shown below.

■

Compare the flared work with figure below.

■

If flare is noted to be defective, cut off the flared
section and re-flare it.

mm

inch

mm

Ø6.35

1/4

0~0.5

Ø9.52

3/8

0~0.5

Ø12.7

1/2

0~0.5

Ø15.88

5/8

0~1.0

Ø19.05

3/4

1.0~1.3

Outside diameter

A

Flare nut

Copper tube

Inclined

Inside is shiny without scratches

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

■

Firmly hold copper pipe in a die in the
dimension shown in the table above.

■

Do not connect the cable to the indoor unit.

■

Make a small loop with the cable for easy
connection later.

■

Hook the indoor unit onto the upper portion of the
installation plate.(Engage the two hooks of the
rear top of the indoor unit with the upper edge of
the installation plate.) Ensure that the hooks are
properly seated on the installation plate by
moving it left and right.

■

Align the center of the pipes and sufficiently
tighten the flare nut by hand.

NOTE: If the drain hose is routed inside the room,
insulate the hose with an insulation material

so that

dripping from "sweating"(condensation) will not damage
furniture or floors.

Foamed polyethylene or equivalent is recommended.

Drain hose

Connecting 
pipe

Connecting cable

Tape

Drain hose

Drain hose

Connecting

cable

Indoor unit tubing

Flare nut

Pipes

Wrench

Indoor unit tubing

Open-end wrench (fixed)

Connection pipe

Flare nut

■

Tighten the flare nut with a wrench.

mm

inch

kg.m

Ø6.35

1/4

1.8

Ø9.52

3/8

4.2

Ø12.7

1/2

5.5

Outside diameter

Torque

■ 

Overlap the connection pipe insulation material and
the indoor unit pipe insulation material. Bind them
together with vinyl tape so that there is no gap.

Plastic bands

Insulation material

Vinyl tape(narrow)

Adhesive

Drain pipe

Indoor unit drain hose

■

When extending the drain hose at the indoor unit,
install the drain pipe.

Vinyl tape(narrow)

Connection
pipe

Connecting cable

Vinyl tape
(wide)

Wrap with vinyl tape

Indoor 
unit pipe

Pipe

■

Wrap the area which accommodates the rear piping
housing section with vinyl tape.

Tape the drain hose and the connecting cable.
• Connecting cable

■ 

Hang the indoor unit from the hooks at the top of
the installation plate.

■ 

Insert the spacer etc. between the indoor unit and
the installation plate and separate the bottom of
the indoor unit from the wall.

■ 

Don't connect the cable to the indoor unit.

■

Make a small loop with the cable for easy connection
later.

Drain pipe

Connecting cable

■

Bundle the piping and drain hose together by
wrapping them with vinyl tape for enough to cover
where they fit into the rear piping housing section.

Installation plate

Spacer

Indoor unit

8cm

■

Align the center of the pipes and sufficiently
tighten the flare nut by hand.

■

Tighten the flare nut with a wrench.

■ 

Overlap the connection pipe heat insulation and the
indoor unit pipe heat insulation material. Bind them
together with vinyl tape so that there is no gap.

Plastic bands

Insulation material

Indoor unit tubing

Flare nut

Pipes

Wrench

Indoor unit tubing

Connection pipe

Flare nut

Open-end wrench (fixed)

Vinyl tape

Adhesive

Drain hose

Indoor unit drain hose

(narrow)

■

When extending the drain hose at the indoor unit,
install the drain pipe.

Wrap with vinyl tape

Drain hose

Pipe

Vinyl tape(wide)

mm

inch

kg.m

Ø6.35

1/4

1.8

Ø9.52

3/8

4.2

Ø12.7

1/2

5.5

Outside diameter

Torque

■ 

Press on the upper side of clamp. ( )

■ 

Unfold the tubing to downward slowly. ( )

■ 

Bend the tubing to the left side of chassis.

Vinyl tape(narrow)

Connection
pipe

Connecting cable

Indoor 
unit piping

Pipe

Vinyl tape
(wide)

Wrap with vinyl tape

■

Wrap the area which accommodates the rear
piping housing section with vinyl tape.

Drain hose

Vinyl tape(narrow)

Pipe

Wrap with 
vinyl tape(wide)

■

Bundle the piping and drain hose together by

wrapping them with cloth tape over the range
within which they fit into the rear piping housing
section.

■

Hook the edge of tubing holder to tap on chassis
and push the bottom of tubing holder to be
engaged at the bottom of chassis.

■

Remove the spacer.

■

Ensure that the hooks are properly seated on the
installation plate by moving it left and right.

Drain hose

Connecting

cable

Piping for
passage through
piping hole

Tubing holder