Panasonic CS-ME7CB1P Service Manual page 32

4
Installation Dimensions
• Select the unit position and airflow direction so that the
cool and warm air spreads throughout the whole room.
• Secure the hanging bolts (M10, locally purchased) firmly
in the manners shown below in a location that is
capable of supporting the unit weight.
• When the ceiling materials insufficient strength, it may
be necessary to make an opening in the ceiling and add
a framework or other reinforcing structure to maintain
the levelness of the ceiling and prevent ceiling vibration.
Consult a construction or interior contractor for details.
Wooden structure Reinforced concrete
(Unit: mm) (Unit: mm)
Reinforcing materials
(60 to 90 mm square)
Hanging
Insert hole-in
bolt M10
anchor, etc.
Hanging
Roof beam
bolt M10
Ceiling surface
Ceiling surface
6
Connecting the Drain Piping
Lay the drain piping so as to ensure drainage.
Use a locally purchased VP20 rigid PVC pipe (outer diameter ø26) for the
drain piping, and connect it to the drain port of the indoor unit using the
drain joint 7 . Coat both sides with a PVC adhesive and adhere them firmly.
Drain piping located indoors should always be insulated by wrapping with locally
purchased insulation (foamed polyethylene with a thickness of 10 mm or more).
The drain piping should have a downward gradient (1/50 or more), and should be
secured using pipe hanging equipment to avoid creating hills or traps partway.
Drain joint 7
Insulation (thickness
Rise
10 mm or more)
Hill
No insulation
Downward gradient
1/50 or more
Should some obstacle prevent the drain piping from being extended
smoothly, the drain piping can be raised outside the main unit as
shown in the illustration below.
CAUTION VP20 elbow VP20 pipe
Absolutely do not install and
20 cm
extend the drain piping from the
or less
main unit drain water outlet Downward gradient
1/50 or more
horizontally or upward or raise it
7 cm
20cm or more. Doing so may
or less
result in poor drainage or cause
of drain motor failure.
Connect the VP20 elbow directly
to the main unit outlet.
1070 Grille
860
Connecting cable
770 Main unit
Insertion position
Control box position
72
67
Discharge vent
11
Grille center
(lower surface) 30
15
30
415 415
90 830 Hanging bolt 90
505 505
1010 Ceiling opening
30 30
770 36.5
Check the drainage Check after connecting the power supply.
Pour approximately 300 to 400 cc of water into the drain pan of the main unit.
(Pour the water from a squeeze bottle or other vessel as shown in the illustration
below.)
Press the "DRAIN TEST" switch located on the control box to start the drain
motor, and check that the water drains normally.
(The drain motor operates for approximately 5 minutes and then stops automatically.)
"DRAIN TEST"
switch
Airflow direction
Trap
control vanes "AUTO" switch
Drain pan
Intake side
Squeeze bottle
Upward
gradient
or level
5
Installing the Indoor Unit
Installation Dimensions
(Unit: mm) Attach the nuts and washers to the
hanging bolts, then lift up and hook
Decorative grille
1070 × 460
the main unit onto the hanging
dimensions
fixtures.
Ceiling opening
1010 × 390 Adjust the lower surface of the
dimensions
indoor unit relative to the ceiling
Hanging bolt pitch
surface as shown in the illustration
830 × 240
dimensions
below.
Main unit
Check the levelness using a level or
H185 × W770 × D360
dimensions
a vinyl hose filled partially with
Ceiling depth water before tightening the nuts.
190 or more
dimension
Drain connection port
145
(connect to VP20)
Refrigerant piping
(gas side) 3/8"
135 55
0 2mm
Refrigerant piping
Ceiling surface
(liquid side) 1/4"
7
Connecting and Insulating the Refrigerant Piping
Tighten the refrigerant piping using the torque
shown in the table to the right.
Cover the piping joint with piping insulation 1 and
tie the insulation firmly using two bands 2 on both
sides. Be sure to adhere the insulation closely so
that there is no gap between the main unit and the
piping insulation.
When the relative humidity inside the ceiling
(indoors) is thought to exceed 80% such as in a
new building during the rainy season or a new
reinforced concrete structure, moisture may
condense on the outer surface of the piping
insulation. In this case be sure to add further
insulation to the refrigerant piping.
Half-union Flare nut
(Auxiliary pipe) (Connection pipe)
Male side Female side
Wrench
Torque wrench
for flare nuts
(17 mm and 12 mm end
wrench or adjustable spanner)
Hanging bolt (M10)
(Locally Purchased)
Flat washer
(Locally Purchased)
Hexagonal nut (M10)
(Locally Purchased)
CAUTION
Note that if the main unit
is not level or if the
height relative to the
ceiling surface is not
appropriate, water may
leak or condense around
the discharge vent.
0 2mm
CAUTION
Hold the half-union with a
wrench, and do not rotate
the male side.
Tightening
Pipe diameter
torque
18N • m
Liquid side
(1.8 kgf • m)
ø6.35 (1/4")
Gas side 42N • m
ø9.52 (3/8") (4.2 kgf • m)
Bands 2
Main
unit
Piping Insulation
insulation 1 (locally purchased)
Thickness:
Adhere closely
8 mm or more