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Liquid pipe
Gas pipe
Felt tape (7)
Indoor/outdoor unit
connecting wire (A)
Piping tape (G)
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.
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supplied).
Note:
Make sure not to damage the cover of refrigerant pipe when attaching it back on with
screws.
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.
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from the end.
Felt tape (7) overlap width should be 1/3 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).
Drain cap
Drain hose
Drain cap
Drain hose
Fig. 1 Fig. 2
Fig. 3
Fig. 4
Fig. 5
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. 1)
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 N•m) (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)
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Remove panel for
piping on bottom
right side of unit
Remove panel
for piping on right
side of unit
Cut
Tightening
direction
Remove panel for piping on
left side of unit.
Piping tape (G)
Felt tape (7)
Slide the pipe cover
completely to the end.