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2-4. INSTALLING THE L-JOINT
1) Install L-joint (10) on the back of the unit. Position L-joint (10) according
to the piping
direction. (Fig. I)
In case of bottom piping (Fig. 2)
• Cut L-joint (10) at the position shown in Fig. 3.
• Remove union nut from the unit and install it to L-joint (10).
• Flare end of L-joint (10).
2) Use two torque wrenches
to tighten the nut. (tighten torque 65 Nom) (Fig. 4)
3) Install charge nut (9) to the liquid refrigerant piping, which connects the indoor and out-
door unit.
4) Perform leak test of joint part (the part tightened
in "2)"), the nut on the gas side should
remain installed.
5) Slide pipe cover of L-joint (10) and cover the joint. (Fig. 5)
side of unit
Remove
panel for
piping on bottom
right side of unit
Fig. 1
/
Slide the pipe cover
completely/o
the end.
Fig. 2
Fig. 3
Fig. 5
2-5. PiPE FORMING AND DRAIN PiPiNG
2-5-1.
PiPE
FORMING
• Place the drain hose below the refrigerant piping.
• Make sure that the drain hose is not crowded or bent.
• Do not pull the hose when applying the tape.
• When the drain hose passes the room, be sure to wrap it with insulation material (field-
supplied).
Note:
Make sure not to damage the cover of refrigerant pipe when attaching it back on with
Liquid pipe
Gas
pipe
Indoor/outdoor
unit
--..
connecting
wire (A)
Felt tape (7)
Piping tape (G)
Left or left-rear
piping
Note:
Be sure to reattach the drain hose and the drain cap if the piping is being installed on left
or bottom left of unit, otherwise, water could drip down from the drain hose.
1)Place the refrigerant
piping and the drain hose together,
then firmly apply felt tape (7)
from the end.
Felt tape (7) overlap width should be t/3 the tape width. Use a bandage stopper at the
end of felt tape (7).
2) Pull out the drain cap at the back right of the indoor unit. (Fig. 1)
• Hold the convex section at the end and pull the drain cap.
3) Pull out the drain hose at the back left of the indoor unit. (Fig. 2)
• Hold the claw marked by the arrows and pull out the drain hose forward.
4) Put the drain cap into the section to which the drain hose is to be attached at the rear of
the indoor unit. (Fig. 3)
• Insert a screwdriver
into the hole on the cap and insert the cap fully into the drain
pan.
5) Insert the drain hose fully into the drain pan at the back right of the indoor unit. (Fig. 4)
• Check if the hose is hooked securely to the projection of its inserting part at the
drain pan.
6) Insert the drain hose into wall hole sleeve (C), and attach the upper part of indoor unit
onto the installation
plate (1). Then, shift the indoor unit completely
to the left to make
placing the piping in the back of the unit easier.
7) Cut out two pieces of cardboard from the shipping box (use any two pieces of the four
pieces), roll each piece, hook them onto the back rib, and use them as spacer to lift the
indoor unit. (Fig. 5)
8) Connect the refrigerant
piping with the extension
pipe (B).
9) Attach the lower part of the indoor unit into the installation
plate (1).
/
Remove
panel for piping on
J
left side of unit.
cap
Fig. 1
Fig. 2
_in
cap
_::_
_/
Drain hose
Fig. 3
Fig. 4
Fig. 5
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