Panasonic U-26PE1U6 Technical Data & Service Manual page 181

WARNING
It is important that you use extreme care in supporting the
indoor unit from the ceiling. Ensure that the ceiling is strong
enough to support the weight of the unit. Before hanging the
ceiling unit, test the strength of each attached suspension
bolt.
(5) Screw in the suspension bolts, allowing them to protrude from
the ceiling (Figs. 1-191 and 1-192).
The distance of each exposed bolt must be of equal length
within 1-31/32" (50 mm). (Fig. 1-193)
Unit
Ceiling surface
Bracket
(6) Carry out the preparation for suspending the indoor unit.
The suspension method varies depending on whether there is
a suspended ceiling or not. (Figs. 1-194 and 1-195)
(7) Suspend the indoor unit as follows:
a) Install the bracket to the suspension bolt.
Stick it onto the ceiling surface. (Fig. 1-194~1-196)
Unit
Bracket
Unit
Washer
(supplied)
Suspension bolt
Fig. 1-193
Suspension bolt
(not supplied)
Ceiling surface
Washer (supplied)
Double nut
(not supplied)
Fig. 1-194
Suspension bolt
(not supplied)
Washer
(not supplied)
Washer (supplied)
Double nut
(not supplied)
Fig. 1-195
Ceiling
surface
Double nut
(not supplied)
Fig. 1-196
b) Suspend the indoor unit to the bracket.
Tighten the M8 or 5/16" suspension bolts and fix the indoor
unit in place. (Fig. 1-197)
M8 or 5/16" suspension bolt
M8 or 5/16" suspension bolts
N OTE
The ceiling surface is not always level. Confirm that the indoor unit is
evenly suspended. For the installation to be correct, leave a clearance
of about 1-31/32" (10 mm) between the ceiling panel and the ceiling
surface and fill the gap with an appropriate insulation or filler material.
6-59. Duct for Fresh Air (Field supply)
There is a outside air intake duct connection port (cut out hole) at the
left-rear of the indoor unit for drawing in fresh air. If it is necessary
to draw in fresh air, remove the cover by opening the hole and
connecting the duct to the indoor unit through the connection port.
(Refer to Fig. 1-183)
6-60. Shaping the Tubing
The positions of the refrigerant tubing connections are shown in the
figure below. (The tubing can be routed in 3 directions.) (Fig. 1-198)
* When routing the tubing out through the top or right sides, cut out the
cover of the top panel and cut notches in the side panel (Refer to Fig. 1-199).
Use a box cutter or similar tool
to cut out the part of the cover
indicated by the marked area
(Fig. 1-199), to match the positions
of the tubes.
Pass all refrigerant tubes through
this hole.
6-61. Installing the Drain Pipe
Prepare hard PVC pipe for the drain and connect it to the indoor
unit drain pipe with the supplied hose band to prevent water leaks.
Measure the thickness of the wall from the inside to the outside and
cut PVC pipe at a slight angle to fit. Insert the PVC pipe in the wall.
(Fig. 1-201)
1-173
1. Specifications
M4 or 5/32" screw for
preventing bracket
from taking off
Fig. 1-197
Fig. 1-198
Cover
Fig. 1-199
1