Panasonic CS-Z25UB4EAW Service Manual page 42

12.1.6 Heat Insulation
Be sure to perform heat insulation on the drain, liquid and gas piping. Imperfection in heat insulation
Caution
work leads to water leakage.
1 Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C).
Overlap with heat insulator for piping.
Band
(Accessory)
Indoor unit
2 Precautions in high humidity circumstance.
This air conditioner has been tested according to the "JIS Standard Conditions with Mist" and have been
confirmed that there are no faults. However, if it is operated for a long time in high humid atmosphere (dew
point temperature: more than 23°C), water drops are liable to fall. In this case, add heat insulation material
according to the following procedure:
Heat insulation material to be prepared... Adiabatic glass wool with thickness 10 to 20 mm.
o
Stick glass wool on all air conditioners that are located in ceiling atmosphere.
o
In addition to the normal heat insulation (thickness: more than 8 mm) for refrigerant piping (gas piping:
o
thick piping) and drain piping, add a further of 10 mm to 30 mm thickness material.
Wall seal

When the outdoor unit is installed on a higher
position than the indoor unit, install the trap so as
not to instill rain water into the wall by transmitting
in piping.

Stuff the space among piping, the electric wire,
and- the drain hose with "Putty" and seal the
penetration wall hole.
Make sure that rain water do not instill into the
wall.
12.1.7 Connecting the Cable to the Indoor

Remove the mounting screw, remove the control
box cover, and then connect the wires by
following the procedure given in the illustration.

Connection cable between indoor unit and
outdoor unit shall be approved polychloroprene
sheathed 4 x 1.5 mm
designation 60245 IEC 57 or heavier cord.
Allowable connection cable length of each indoor
unit shall be 30 m or less.

Secure the connection cable onto the control
board with the holder (clamper).

Ensure the colour of wires of outdoor unit and the
terminal Nos. are the same to the indoor's
respectively.

Earth wire shall be Yellow/Green (Y/G) in colour
and longer than other AC wires for safety reason.
Terminals on the indoor uni t
Colour of wires
Terminals on the outdoor unit
WARNING
This equipment must be properly earthed.
Heat insulator for piping
(Local supply)
Heat insulator (Accessory)
2
flexible cord, type
1 2 3
1 2 3
Hose clip (Accessory)
Heat insulator (Local supply)
(The thickness must be at
least 8 mm.)
It may be required to take off this part for checking or
servicing the drain up motor. Please do not glue.
Make sure that there is
no clearance here.
Pipe down
Indoor
unit
Drain pipe
 Put the incision at the trap part of the heat
insulator (for water drain)
Installer should
open the earth
wire screw on
the metal part
when necessary
for installation or
service purpose.
42
Flexible hose with heat insulator
(Accessory)
PVC pipe (O.D. ø26)
(Local supply)
To be glued
Putty
Pipe
Trap
Incision
Wire insertion hole
Control box cover
Indoor
Terminal
1 2 3
Screw of Earth connect