Heat Insulation - Panasonic CU-2E18SBE Service Manual

CU-3E23***, CU-3RE18***
Terminals on the indoor unit
Colour of wires (Connection cable)
Terminals on the outdoor unit
(Power supply cord)
Terminals on the isolating devices
(Disconnecting means)
5. For wire stripping and connection requirement, refer to the diagram below.
6. Secure the power supply cord and connecting cables onto the control board with the holder.
7. Attach the control board cover back to the original position with screw.
No loose strand when
inserted
This equipment must be properly earthed.

Note: Isolating Devices (Disconnecting means) should have minimum 3.0 mm contact gap.

Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason.
10.2.6

Heat Insulation

Use a material with good heat-resistant properties as the heat insulation for the
pipes. Be sure to insulate both the gas-side and liquid-side pipes. If the pipes are
not adequately insulated, condensation or water leakages may occur.
CUTTING AND FLARING THE PIPING
1. Please cut using pipe cutter and then remove the burrs.
2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused.
Turn the piping end down to avoid the metal powder entering the pipe.
3. Please make flare after inserting the flare nut onto the copper pipes.
Point down
1. To cut
CU-3E23***, CU-3RE18***
Unit C
WIRE STRIPPING AND CONNECTING REQUIREMENT
Indoor/outdoor
Wire stripping
connecting
terminal board
5 mm
or more
(gap between
wires)
Pipe
Reamer
Bar
Clamp
handle
2. To remove burrs 3. To flare
1 2 3 1
L N 1 2 3 1
(UNIT A) (UNIT B)
(L) (N)
Unit A Unit B
p
Indoor & outdoor
Power Supply
connection cable
Cord
Isolating Indoor
Indoor Indoor
Devices Unit A
Unit C Unit B
Conductor fully
inserted
ACCEPT
Handle
0 – 0.5 mm
Bar
Yoke
Core
Copper pipe
Red arrow mark
46
2 3 1 2 3
2 3 1 2 3
(UNIT C)
Conductor over Conductor not
inserted fully inserted
PROHIBITED PROHIBITED
Liquid-side pipes
Gas-side pipes
■ Improper flaring ■
Inclined Surface Cracked Uneven
damaged thickness
When properly flared, the internal surface
of the flare will evenly shine and be of
even thickness. Since the flare part comes
into contact with the connections, carefully
check the flare finish.
Material shall
withstand
120°C or higher