20
ENGLISH
A B
E
B
I
A
B
D
C
1m
1m
D
F
G
B
G
D
B
H
I
J
A
Ⓐ
Sleeve
Ⓑ
Heat insulating material
Ⓒ
Lagging
Ⓓ
Caulking material
Ⓔ
Band
Ⓕ
Waterproofing layer
Ⓖ
Sleeve with edge
Ⓗ
Lagging material
Ⓘ
Mortar or other incombustible caulking
Ⓙ
Incombustible heat insulation material
When filling a gap with mortar, cover the penetration part with steel plate so
that the insulation material will not be caved in. For this part, use
incombustible materials for both insulation and covering. (Vinyl covering
should not be used.)
Inner wall (concealed)
Outer wall
Outer wall (exposed)
Floor (fireproofing)
Penetrating portion on fire
limit and boundary wall
Roof pipe shaft
- Install the Outside Unit communication cable away from the power
source wiring so that it is not affected by electric noise from the power
source. (Do not run it through the same conduit.)
- Be sure to provide designated grounding work to Outside Unit.
- Give some allowance to wiring for electrical part box of Indoor and
Outside Units, because the box is sometimes removed at the time of
service work.
- Communication between the compressor module and the condenser
module must be connected at a fixed site on the terminal block.
- Never connect the main power source to terminal block of
communication cable. If connected, electrical parts will be burnt out.
- Use 2-core shield cable for communication cable.( mark in the
figure below) If communication cable of different systems are wired
with the same multiplecore cable, the resultant poor transmitting and
receiving will cause erroneous operations. ( mark in the figure
below)
- Only the communication cable specified should be connected to the
terminal block for Outside Unit communication.
CAUTION
Be sure to correct the outside unit to earth. Do not connect ground
wire to any gas pipe, liquid pipe, lightening rod or telephone earth
line. If earth is incomplete, it may cause an electric shock.
!
WARNING
Be sure to have authorized electrical engineers do the electric
work using special circuits in accordance with regulations and this
installation manual.
If power supply circuit has a lack of capacity or electric work
deficiency, it may cause an electric shock or fire.
!
2-Core Shield Cable
Multi-Core Cable
Remote
control
Remote
control
Remote
control
Remote
control
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Compressor Module Heat Exchanger
Module
Compressor Module Heat Exchanger
Module
Remote
control
Remote
control
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Indoor
Unit
Indoor
Unit
Compressor Module Heat Exchanger
Module
Compressor Module Heat Exchanger
Module
Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal
block.
Round pressure terminal
Power cable
- For wiring, use the designated power cable and connect firmly, then
secure to prevent outside pressure being exerted on the terminal
block.
- Use an appropriate screwdriver for tightening the terinal screws. A
screwdriver with a small head will strip the head and make proper
tighterning impossible.
- Over-tightening the terminal screws may break them.
CAUTION
• Use the 2-core shield cables for communication cables. Never use
them together with power cables.
• The conductive shielding layer of cable should be grounded to the
metal part of both units.
• Never use multi-core cable
• As this unit is equipped with an inverter, to install a phase leading
capacitor not only will deteriorate power factor improvement effect,
but also may cause capacitor abnormal heating. Therefore, never
install a phase leading capacitor.
• Make sure that the power unbalance ratio is not greater than 2%.
If it is greater the units lifespan will be reduced.
!
When none are available, follow the instructions below.
- Do not connect wiring of different thicknesses to the power terminal
block. (Slack in the power wiring may cause abnormal heat.)
- When connecting cable which is the same thickness, do as shown in
the figure below.
ELECTRICAL WIRING
Caution
- Follow ordinance of your governmental organization for technical
standard related to electrical equipment, wiring regulations and
guidance of each electric power company.
Penetrations
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