ASU12RL2 Installation Manual
En-7
Installation method of Drain cap
• Use a hexagonal wrench 4
mm (5/32 in.) at opposite side
to insert the drain cap, till the
drain cap contacts the tip of
drain cock.
Pipe (top)
Indoor unit
drain hose
(bottom)
Drain cap
Indoor unit drain hose
Removal method
of drain hose
• Remove the screw at
the left of
drain hose and pull
out drain hose.
Installation method
of drain hose
•
Vertically insert the drain
hose toward the inside, so
that the drain fi xture (white)
can accurately align with
the screw hole around the
drain cock.
After inserting and before
replacing, please rein-
stall and fix the removed
screws.
• Please hold around the joint of the drain hose during
working.
•
As the screw is inside, be sure to use screwdriver treated
with magnet.
Screw
Drain fixture
Drain hose
Screw hole
Drain cock
Drain hose
Screw
Drain fixture
•
For left piping and left rear piping, align the marks on the wall
hook bracket and shape the connection pipe.
• Bend the connection piping at a bend radius of 70 mm
(2-3/4 in.) or more and install no more than 35 mm (1-3/8
in.) from the wall.
•
After passing the indoor piping and drain hose through the
wall hole, hang the indoor unit on the hooks at the top and
bottom of the wall hook bracket.
[Installing the indoor unit]
• Hang the indoor unit from the hooks at the top of the wall
hook bracket.
• Insert the spacer, etc. between the indoor unit and the
wall hook bracket and separate the bottom of the indoor
unit from the wall.
Indoor unit
Wall hook bracket
(Spacer)
Connection pipe
(6.35 mm (1/4 in.) dia.)
Align the marks.
Connection pipe (9.52 mm (3/8 in.) dia.)
Bend R70 mm
(2-3/4 in.) with a
pipe bender
Top hooks
Bottom hooks
After hooking the indoor unit to the top hook, hook the fi ttings
of the indoor unit to the 2 bottom hooks while lowering the unit
and pushing it against the wall.
6.6. Flare connection (Pipe connection)
CAUTION
• Tighten the flare nuts with a torque wrench using the
specified tightening method. Otherwise, the flare nuts
could break after a prolonged period, causing refriger-
ant to leak and generate hazardous gas if the refrigerant
comes into contact with a fl ame.
6.6.1. Flaring
• Use special pipe cutter and fl are tool exclusive for R410A.
(1) Cut the connection pipe to the necessary length with a
pipe cutter.
(2) Hold the pipe downward so that cuttings will not enter the
pipe and remove any burrs.
(3)
Insert the fl are nut (always use the fl are nut attached to the
indoor unit(s) and outdoor unit or branch box respectively)
onto the pipe and perform the fl are processing with a fl are
tool. Use the special R410A fl are tool, or the conventional
fl are tool. Leakage of refrigerant may result if other fl are nuts
are used.
(4) Protect the pipes by pinching them or with tape to prevent
dust, dirt, or water from entering the pipes.
Die
A
Pipe
B
L
Check if [L] is flared uniformly
and is not cracked or scratched.
No gap
Hexagonal
wrench
Drain cock
Drain cap
9332622027_IM.indb 79332622027_IM.indb 7 2012-9-29 8:36:502012-9-29 8:36:50