Fujitsu AS*7A Technical Manual page 135

2. CUTTING THE HOLE IN THE WALL FOR THE
CONNECTING PIPING
If the wall pipe is not used, the cord
interconnecting the indoor and outdoor
units may touch metal and cause electric
leakage.
(1) Cut a 100 mm diameter hole in the wall at the posi-
tion shown in Fig. 10.
(2) When cutting the wall hole at the inside of the instal-
lation frame, cut the hole to a point of intersection of
center marks.
When cutting the wall hole at the outside of the
installation frame, cut the hole at least 10 mm below
less.
(3) Cut the hole so that the outside end is lower (5 to 10
mm) than the inside end.
(4) Always align the center of the wall hole. If mis-
aligned, water leakage will occur.
(5) Cut the wall pipe to match the wall thickness, stick it
into the wall cap, fasten the cap with vinyl tape, and
stick the pipe through the hole. (The connection
pipe is supplied in the installation set.) (Fig. 10)
Fig. 10
Lower
10 mm
or over
Fasten with
vinyl tape
Wall cap
(Wall pipe)
(Inside)
t
(6) For left piping and
little lower so that drain water will flow freely. (Fig.
10)
3. FORMING THE DRAIN HOSE AND PIPE
(1) Do not remove the flare nut from
the indoor unit pipe until immedi-
ately before connecting the connec-
tion pipe.
(2) To prevent breaking of the pipe,
avoid sharp bends. Bend the pipe
with a radius of curvature of 100
mm or over.
(3) If the pipe is bent repeatedly at the
same place, it will break.
Center mark
Lower
10 mm
or over
100 mm dia. hole
5 to 10 mm low
(Outside)
Wall
w
right piping, cut the hole a
[q Rear piping, w Right piping, e Bottom pip-
ing]
• Install the indoor unit piping in the direction of the
wall hole and bind the drain hose and pipe together
with vinyl tape. (Fig. 11)
• Install the piping so that the drain hose is at the bot-
tom.
Fig. 11
Cut off the piping outlet
cutting groove with a
hacksaw, etc.
Decorative
tape
Right
piping
Notch the thin
Bottom piping
part of under
cover A.
• Perform "w INDOOR UNIT WIRING" before perform-
ing this piping.
• Wrap the pipes of the indoor unit that are visible from
the outside with decorative tape.
• After passing the indoor piping and drain hose
through the wall hole, hang the indoor unit on the
hooks at the top of the wall hook bracket.
Fig. 12
Indoor unit
[For r Left rear piping, t Left piping]
• Left piping and left rear piping can be easily installed
by removing the pipe bracket.
Removing the pipe bracket
Remove the three tapping screws holding the pipe
bracket as shown below.
Fig. 13
Pipe bracket
– 134 –
Pipe (top)
Rear piping
Indoor unit drain hose (bottom)
Bind with vinyl tape
Wall hook bracket
Tapping screw
Top hooks