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Rear, right, or downward piping
together, then firmly apply piping tape (G)
from the end.
wall hole sleeve (C), and hook the upper part
the unit to left and right.
Drain Piping
mercially sold insulation.
• If the drain hose provided with the indoor unit is too short, connect it with drain hose (I)
• When connecting the drain hose to the hard vinyl chloride pipe, be sure to insert it
securely into the pipe. (Fig. 3)
Drain
hose
Downward
slope
Soft hose
Do not make drain piping as shown below.
Accumulated
Do not raise
drain water
Water
Water
Waving
leakage
leakage
3. OUTDOOR UNIT INSTALLATION
3-1. CONNECTING WIRES FOR OUTDOOR UNIT
the wire to the terminal block securely so that no part of its core is appeared, and no
3) Firmly tighten the terminal screws to prevent them from loosening. After tightening,
clamp.
Terminal block
Lead wire
Indoor/outdoor unit
connecting wire (A)
Cord clamp
3-2. FLARING WORK
tion of pipe. (Fig. 3)
• Put the end of the copper pipe to downward direc-
tion as you remove burrs in order to avoid to let
burrs drop in the piping.
3) Remove flare nuts attached to indoor and outdoor
units, then put them on pipe having completed burr
removal. (Not possible to put them on after flaring
work.)
dimension shown in the table. Select A mm from the
table according to the tool you use.
• If flare is noted to be defective, cut off the flared
Copper pipe
Burr
Spare reamer
Pipe cutter
Fig. 3
Cut off in case of
right piping.
Cut off in case of
downward piping.
Drain hose
Hard vinyl chloride
more
Insert
securely
Different
diameter joint
Fig. 3
Tip of drain
hose dipped
Air
in water
Water
Ditch
leakage
• Make earth wire a little longer than
to the connecting wires.
• Be sure to attach each screw to its
correspondent terminal when secur-
ing the cord and/or the wire to the
terminal block.
Power supply cord (K)
Cord clamp
Copper
pipe
-
No good
Good
Tilted Uneven Burred
Flaring tool
Clutch type
Wing nut type
Left or left-rear piping
Note:
Be sure to reattach the drain
hose and the drain cap in case
of left or left-rear piping.
Otherwise, it could cause drops
of water to drip down from the
drain hose.
-
cap.
3) Pull out the drain hose at the rear left of the indoor unit.
• Hold the claw marked by the arrows and pull out the
drain hose forward.
hose is to be attached at the rear of the indoor unit.
(Fig. 3)
• Insert not sharp-edged tools such as screwdrivers
into the hole at the end of the cap and insert the cap
fully into the drain pan.
• Check if the hose is hooked securely to the projection
of its inserting part at the drain pan.
Then, move the indoor unit completely to the left in or-
der to make placing the piping in the back space of the
At least
unit easier.
gap
it up, hook it onto the back rib, and use it as a spacer to
9) Thrust the lower part of the indoor unit into the installa-
Copper pipe
Die
Flare nut
Pipe diameter
Nut
(mm)
(mm)
3-3. PIPE CONNECTION
leakage.
• Be sure to wrap insulation around the piping. Direct contact with the bare piping may re-
sult in burns or frostbite.
Indoor unit connection
Connect both liquid and gas pipings to indoor unit.
• Apply a thin coat of refrigeration oil (J) on the seat surface of pipe.
• Use tightening torque table above as a guideline for indoor unit side union joint section,
Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in the
same manner applied for indoor unit.
• For tightening, use a torque wrench or spanner and use the
same tightening torque applied for indoor unit.
When installing the unit, securely connect the refrigerant
pipes before starting the compressor.
3-4. INSULATION AND TAPING
3) Using piping tape (G), apply taping starting from the entry of outdoor unit.
• Stop the end of piping tape (G) with tape (with adhesive agent attached).
• When piping have to be arranged through above ceiling, closet or where the tempera-
ture and humidity are high, wind additional commercially sold insulation to prevent con-
densation.
Piping tape (G)
Inside is shin-
ing without any
Smooth all
scratches.
around
Even length
all around
A (mm)
Clutch type
Clutch type
Wing nut
tool
tool
type tool
WARNING
Cut off in case of left
piping.
Drain cap
Drain cap
Drain hose
Drain cap
Fig. 3
Drain hose
Tightening torque
N•m
kgf•cm
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