THE INDOOR UNIT INSTALLATION
51
ENGLISH
3 When needed to extend the drain hose of
indoor unit, assembly the drain pipe as
shown on the drawing
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
CAUTION
!
• When mechanical connectors are reused
indoors, sealing parts shall be renewed.
• When flared joints are reused indoors,
the flare part shall be re-fabricated.
Connecting the installation pipe and
drain hose to the indoor unit.
1 Align the center of the pipes and
sufficiently tighten the flare nut by hand
2 Tighten the flare nut with a wrench
Indoor unit tubing Flare nut Pipes
Outside diameter
Torque
mm inch kgf
.
m
Ø 6.35 1/4 1.8~2.5
Ø 9.52 3/8 3.4~4.2
Ø 12.7 1/2 5.5~6.5
Ø 15.88 5/8 6.3~8.2
Ø 19.05 3/4 9.9~12.1
Wrench
Indoor unit tubing
Open-end wrench
(fixed)
Connection
pipe
Flare nut
CAUTION
!
• The installation of pipe-work shall be
kept to a minimum
• Flared joint shall be restricted to use
with annealed pipe only, and to pipe
sizes not exceeding a diameter of 20
mm outside diameter.
Check
1 Compare the flared work with the figure
by.
2 If a flared section is defective, cut it off
and do flaring work again.
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
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