SMMS 2-way Air Discharge Cassette Type
Installation Manual
18
Open the valve fully
Open the valve of the outdoor unit fully.
Thermal insulation process
Apply thermal insulation for the pipes separately at liquid
side and gas side.
• For the thermal insulation to the pipes at gas side, be
sure to use the material with heat-resisting
temperature 120°C or higher.
• Using the attached thermal insulation material, apply
the thermal insulation to the pipe connecting section of
the indoor unit securely without gap.
CAUTION
Apply the thermal 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.)
Indoor unit
Union
Heat insulation
pipe (Accessory)
Pipe tie
(Accessory)
Flare nut
Heat insulator
of the pipe
7
ELECTRICAL WORK
WARNING
1.
Using the specified wires, ensure to connect the
wires, and fix wires securely so that the external
tension to the wires do not affect the connecting
part of the terminals.
Incomplete connection or fixation may cause a fire,
etc.
2.
Be sure to connect earth wire. (grounding work)
Incomplete earthing cause an electric shock.
Do not connect earth wires to gas pipes, water
pipes, lightning rods or earth wires for telephone
wires.
3.
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.
• Be sure to install an earth leakage breaker that is not
tripped by shock waves.
If an earth leakage breaker is not installed, an electric
shock may be caused.
• Be sure to use the cord clamps attached to the
product.
• Do not damage or scratch the conductive core and
inner insulator of power and inter-connecting wires
when peeling them.
• Use the power cord and Inter-connecting wire of
specified thickness, type, and protective devices
required.
• Never connect 220 V – 240 V power to the terminal
blocks
(
, , , ,
etc.)
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.
• Perform the electric wiring so that it does not come to
contact with the high-temperature part of the pipe.
The coating may melt resulting in an accident.
• 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
vacuuming of the refrigerant pipes completes.
Power supply wire and
communication wires
specifications
Power supply wire and communication wires are
procured locally.
For the power supply specifications, follow to the table
below. 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.
A
B
EN-35
EN-36
Summary of Contents for MMU-AP0072WH
Page 36: ...DH91303401 ...
