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1) Preparation of pipings
1. Cut the pipes and the cable.
• Use the accessory piping kit or the pipes pur-
chased 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 length of the
pipe.
2. Remove burrs.
• Remove burrs from cut edges of pipes.
• Turn the pipe end toward down to avoid the
metal powder entering the pipe.
Caution:
If burrs are not removed, they may cause a gas
leakage.
leakage.
3. Flaring the pipes.
• Insert the flare nuts, mounted on the connection
ports of both indoor and outdoor unit, onto the
copper pipes. Some refrgerant gas may leak,
when the flare nuts are removed from the indoor
unit, as some gas is charged to prevent the
inside of the pipe from rusting.
copper pipes. Some refrgerant gas may leak,
when the flare nuts are removed from the indoor
unit, as some gas is charged to prevent the
inside of the pipe from rusting.
• Fit the copper pipe end into the Bar of flare tool
about 0~0.5mm higher. (See illustration)
• Flare the pipe ends.
4. Tape the flaring portion to protect it from the
dust or damages.
90
Slanted
Pipe cutter
Rough
Reamer
Pipe
Point down
"A"
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Bar
Yoke
Handle
Inclined
Cracked
Uneven
thickness
Surface
damaged
= Improper flaring =
When properly flared, the internal surface flare will
evenly shine and be of even thickness.
Since the flare part comes into contact with the connec-
tors, carefully check the flare finish.
evenly shine and be of even thickness.
Since the flare part comes into contact with the connec-
tors, carefully check the flare finish.
"A"; ø12.7 mm (1/2")
→
0~0.5 mm
ø9.52 mm (3/8")
→
0~0.5 mm
ø6.35 mm (1/4")
→
0~0.5 mm
(2) Piping and Drainage of Indoor Unit
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2) Connection of Pipings
1. Remove the installation plate
• Pull the two '
∆
' marked portion of bottom of the
chassis and pull the installation plate out of chas-
sis.
sis.
2. Route the drain hose and the indoor tubing.
For left rear piping
3. Route the tubing and the drain hose straight
backwards(see figure).
4. Insert the connecting cable into the indoor
unit through the piping hole.
• Do not connect the cable to the indoor unit.
• Do not connect the cable to the indoor unit.
• Make a small loop with the cable for easy con-
nection later.
5. Tape the tubing, drain hose and the connecting
cable. Be sure that drain hose locates at the
lowest side of the bundle.
Locating at the upper side can be a reason that
drain water overflows drain pan inside the unit.
lowest side of the bundle.
Locating at the upper side can be a reason that
drain water overflows drain pan inside the unit.
Installation plate
Pull
Pull
• To remove the holder, press
the bottom of the chassis
near the holder upwards
and the tab is clear of its
hole.
near the holder upwards
and the tab is clear of its
hole.
• Turn it clockwise approx.
90° and remove it.
Tubing holder
¥L
Press
¥M
Pull
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Connecting
cable
cable
Drain hose
Indoor unit tubing
Flare nut
Pipings
Spanner
Torque wrench
Plastic bands
Insulation material
Press the lower left and right side of the unit
against the Installation Plate until the hooks
engage with their slots (sound click).
against the Installation Plate until the hooks
engage with their slots (sound click).
6. Indoor unit installation.
• Hook the indoor unit onto the upper position 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 the hooks are properly seated on the
installation plate by moving it in left and right.
the rear top of the indoor unit with the upper
edge of the installation plate.)
Ensure the hooks are properly seated on the
installation plate by moving it in left and right.
7. Connecting the pipings to the indoor unit.
• Align the center of the pipings and sufficiently
tighten the flare nut with fingers.
• Finally, tighten the flare nut with torque wrench
until the wrench clicks.
Wrench tightening the flare nut with forque
wrench, ensure the direction for tightening fol-
lows the arrows on the wrench.
Wrench tightening the flare nut with forque
wrench, ensure the direction for tightening fol-
lows the arrows on the wrench.
8. Wrap the insulation material around the con-
necting portion.
CAUTION: Take care to arrange the pipings,
drain hose and cables as the right
upper picture for inserting it into the
indoor unit and refixing the tubing
holder easily.
upper picture for inserting it into the
indoor unit and refixing the tubing
holder easily.
Pipe Size
Torque
Liquid Side (1/4")
1.8kg
¡⁄
m
Gas Side (3/8")
4.2kg
¡⁄
m
Gas Side (1/2")
5.5kg
¡⁄
m
Wrap the insulation material around the connecting
portion.
portion.
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9. Set the pipings and the connecting cable to
the back of the chassis with the tubing
holder.
holder.
• Hook the edge of tubing holder to tap on chas-
sis and push the bottom of tubing holder to be
engaged in the bottom of chassis.
engaged in the bottom of chassis.
10. Indoor unit installation.
• Hook the indoor unit onto the upper portion of
installation plate. (Engage the two hooks of the
rear top of the indoor unit with the upper edge
of the installation plate.)
Ensure the hooks are properly seated on the
installation plate by moving it in left and right.
rear top of the indoor unit with the upper edge
of the installation plate.)
Ensure the hooks are properly seated on the
installation plate by moving it in left and right.
Drain hose
Tubing holder
Taping
Piping
Push
2
Hook
1
Connecting
cable
cable
Drain hose
Press the lower left and right side of the unit
against the Installation Plate until the hooks
engages with their slots (sound click).
against the Installation Plate until the hooks
engages with their slots (sound click).
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