LG LA121HPMI - Manual (Page 21)

Service Manual 21
Insert the connecting cable into the indoor
unit.
• Don't connect the cable to the indoor unit.
• Make a small loop with the cable for easy con-
nection later.
Tape the drain hose and the connecting cable.
• Connecting cable
Connecting the pipings to the indoor unit
and the drain hose to drain pipe.
• Put a couple drops of refrigerant oil on the face
of the flare before assembling taking care not to
add any contaminants
• Align the center of the pipings and sufficiently
tighten the flare nut by hand.
• Tighten the flare nut with a wrench.
Indoor unit tubing Flare nut Pipings
Torque wrench
Indoor unit tubing
Spanner (fixed)
Connection pipe
Flare nut
Indoor unit installation
• Hook the indoor unit onto the upper portion of
the installation plate.(Engage the three hooks of
the rear top and rear lower of the indoor unit with
the upper edge and lower edge of the installation
plate.) Ensure that the hooks are properly seated
on the installation plate by moving it left and
right.
Vinyl tape
Adhesive
Drain hose
Indoor unit drain hose
(narrow)
• When extending the drain hose at the indoor
unit, install the drain pipe.
Connecting
pipe
Connecting cable
Tape
Drain hose
Drain hose
Connecting
cable
• Mount the clamp on the boss with a type "B"
screw.(SE-H/P: 9k, 12k C/O: 12k)
Drain hose
Clamp
Boss
Type "B" screw
Wrap the insulation material around the
connecting portion.
• 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
Ш6.35 1/4 180~250
Ш9.52 3/8 340~420
Ш12.7 1/2 550~660
Ш15.88 5/8 630~820
Ш19.05 3/4 980~1210
Outside diameter
mm inch
Torque
kgf.cm
Installation