
11
Washer
Threaded hangers
Washer
Nut
Nut
Nut
Wooden frame
Threaded hangers
Washers
Nut
A07186
Fig. 16 -- Attach Hangers to Ceiling
Threaded hangers
"T" bar
(to be removed)
A07187
Fig. 17 -- Threaded Hangers and “T”Bar
Supension Brackets
Supension Brackets
Threaded Hangers
T-Bar
T-Bar
Threaded Hangers
T-Bar
A07188
Fig. 18 -- Positioning Unit in Ceiling
4. Hanging the Indoor Unit:
a. Screw double nuts to each suspension bolts making
space for hanging the indoor unit
b. Use a stacker to lift the unit to the installation site.
A07185
Fig. 19 -- Positioning Unit
c. Hang the indoor unit to the suspension bolts between
two nuts.
d. Screw the nuts to suspend the unit. Check the lower side
of indoor unit locates at position (10 to 12 mm) higher
than the lower surface of the ceiling. L is about half of
the screw length of the installation hook.
e. Adjust level of the unit by using level vial to make sure
the horizontal level of the main body is within
1
°
.
2.3.2 Hang the indoor unit to the suspension bolts between two nuts.
Screw nut
Washer
Hanging
screw bolt
Overhang part
Shockproof cushion
Ceiling
Body
1
0
~12
mm
L
Fig. 20 -- Suspension Bolt Details
5. Install the Drain Pipe
The cassette unit is equipped with a condensate pump. Use the
following steps to install the drain piping.
a. Remove the cover of the drain hose connection port.
b. Insert the flexible hose onto the drain hose port. Secure-
ly fix the flexible hose to the indoor unit with a pipe
clamp.
c. Install the flexible hose onto the PVC water pipe (field
supplied, O.D. 1”) with PVC adhesive.
NOTES
:
The drain pipe should be install within 200mm from the flexible
hose connection at the indoor unit.
To ensure correct condensate water flow, the pipe should have a
gradient of 2% without obstruction. see figure 21.
d. Make a trap of at least 2 in. (51 mm) in depth to prevent
unpleasant odors from reaching the room.
e. Insulate condensate pipe with condensation proof mate-
rial such as polyurethane, propylene, or neoprene of
3/16 in. to 3/8 in. thickness.
Pipe clamp
Indoor unit
Flexible hose
Drain hose connection port
PVC water pipe
O.D.:Φ25)
PVC adhesive
Lean over 2%
1.0-1.5m
Max. 750mm
<200mm
Drain hose connection port
A150296
Fig. 21 -- Drain Pipe Connection
f. Drill a 2--3/4 in. (70 mm) hole in the wall with a 3/16
in. to 3/8 in. (4.8 -- 9.5 mm) slope toward the outside
(see Fig. 22). This hole will be used for the piping (re-
frigerant and condensate) and control wiring