– 13 –
Heat insulation process
Apply heat insulation for the pipes separately at liquid side and gas side.
For the heat insulation to the pipes at gas side, be sure to use the material with heat-resisting temperature
120 °C or higher.
To use the attached heat insulation pipe, apply the heat insulation to the pipe connecting section of the indoor
unit securely without gap.
REQUIREMENT
Apply the heat insulation to the pipe connecting section of the indoor unit securely up to the root without exposure of
the pipe. (The pipe exposed to the outside causes water leak.)
Wrap heat insulator with its slits facing up (ceiling side).
Indoor unit
Union
Heat insulation
pipe
(Accessory)
Flare nut
Heat insulator
of the pipe
Wrap the pipe with the attached heat insulator
without any gap between the indoor unit.
The seam must be faced upward
(ceiling side).
Banding band
(locally
procured)
8
Electrical connection
WARNING
Use the specified wires for wiring connect the
terminals. Securely fix them to prevent external
forces applied to the terminals from affecting the
terminals.
Incomplete connection or fixation may cause a fire or
other trouble.
Connect earth wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect earth wires to gas pipes, water pipes,
lightning conductor or telephone earth wires.
Appliance shall be installed in accordance with
national wiring regulations.
Capacity shortage of power circuit or incomplete
installation may cause an electric shock or a fire.
CAUTION
If incorrect/incomplete wiring is carried out, it will
cause an electrical fire or smoke.
Use the cord clamps attached to the product.
Do not damage or scratch the conductive core and
inner insulator of power and system interconnection
wires when peeling them.
Use the power cord and system interconnection wire
of specified thickness, type, and protective devices
required.
Do not connect 220 V – 240 V power to the terminal
blocks (
,
,
,
) for control wiring. (Otherwise,
the system will fail.)
REQUIREMENT
For power supply wiring, strictly conform to the Local
Regulation in each country.
For wiring of power supply of the outdoor units, follow
the Installation Manual of each outdoor unit.
Power supply wire and
communication wires
specifications
Power supply wire and communication wires are
procured locally.
For the power supply specifications, follow to the
following table. If capacity is little, it is dangerous
because overheat or burnout may be caused.
For specifications of the power capacity of the outdoor
unit and the power supply wires, refer to the Installation
Manual attached to the outdoor unit.
Indoor unit power supply
For the power supply of the indoor unit, prepare the
exclusive power supply separated from that of the
outdoor unit.
Arrange the power supply, circuit breaker, and main
switch of the indoor unit connected to the same
outdoor unit so that they are commonly used.
Power supply wire specification: Cable 3-core 2.5
mm²,
in conformity with Design 60245 IEC 57
.
U
1
U
2
A
B
25-EN
26-EN
Do not contact the electric wiring with the high-
temperature part of the pipe. It causes the coating
melted.
After connecting wires to the terminal blocks, provide
a trap and fix wires with the cord clamp.
Run the refrigerant piping line and control wiring line in
the same line.
Do not turn on the power of the indoor unit until
the refrigerant pipes are vacuumed.
1117065599 (01)_EN.indd 14
1117065599 (01)_EN.indd 14
01/07/15 3:42 PM
01/07/15 3:42 PM
