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This manual describes the installation of the PAC-SC50KUA Power supply unit and wiring to the central controller and the air condi-
tioner units. For the information about how to install the central controller or the air conditioner units, see the installation manual for
them.
For your safety, first be sure to read 1 Safety precautions described below thoroughly and then install the PAC-SC50KUA correctly.
After reading this installation manual, keep it in a location that is easy to find, If the PAC-SC50KUA Power supply unit is going to be
operated by another person, make sure that this manual is given to them.
1
Safety precautions
Before installing this unit, make sure you read all the “Safety Precautions”.
The “Safety Precautions” provide very important points regarding safety. Make sure you follow them.
Symbols and Terms
WARNING
Statements identify condition or practices that could result in personal injury or loss of life.
CAUTION
Statements identify condition or practices that could result in damage to the unit or other property.
Ask your dealer or technical representative to install.
Any deficiency cased by your own installation may result in
an electric shock and fire.
Install in a place which is strong enough to withstand
the weight of the unit.
Any lack of the strength may cause the unit to fall down,
resulting in a personal injury.
Wire and connect using the desired cables securely so
that any external force from the cable is not imparted to
the terminal connections.
Imperfect connection and fixing may result in heating or fire.
Never modify or repair the unit by yourself.
Any deficiency caused by your modification or repair may
result in an electric shock or fire.
Consult with your distributor for repair.
Make sure that the unit is powered by a dedicated line.
Other appliances connected to the same line could cause
an overload.
Make sure that there is a main power switch.
A ready accessible breaker for power source line helps re-
duce the risk of electric shocks. Installation of a breaker is
mandatory in same area.
Ensure that installation work is done correctly follow-
ing this installation manual.
Any deficiency caused by installation may result in an elec-
tric shock or fire.
All electrical work must be performed by a licensed tech-
nician, according to local regulations and the instruc-
tions given in this manual.
Any lack of electric circuit or any deficiency caused by in-
stallation may result in an electric shock or fire.
Do not move and re-install the unit yourself.
Any deficiency caused by installation may result in an elec-
tric shock or fire.
Ask your distributor or special vender for moving and instal-
lation.
This appliance must be earthed.
Make sure to install a protective earth (PE) line.
Do not connect the protective earth line to gas or water pipes,
Iighting conductors or telephone grounding lines.
Improper grounding may cause an electric shock.
Specific Precautions
WARNING
CAUTION
Do no install any place exposed to flammable gas
leakage.
Flammable gases that accumulates around the body of the
unit may caused an explosion.
Do not use in any special environment.
If use in any place exposed to oil (including machine oil),
steam and sulfuric gas may degrade performances signifi-
cantly or damage the component parts.
Wire so that it does not received any tension.
Tension may caused wire breakage, heating or fire.
Do not wash with water.
Doing so may cause an electric shock or malfunction.
Do not install in any place at a temperature of more than
40
°
C or less than 0
°
C or exposed to direct sunlight.
Use only a fuse of specified capacity.
A fuse of large capacity or a steel or copper wire could cause
a malfunction or fire.
Do not install in any steamy place such as bath room or
kitchen.
Avoid any place where moisture is condensed into dew.
Doing so may cause an electric shock or a malfunction.
Do not install in any place where acidic or alkaline solu-
tion or special spray are often be used.
Doing so may cause an electric shock or malfunction.
Use standard wires in compliance with the current ca-
pacity.
A failure to this may result in an electric leakage, heating or
fire.
Do not touch any PCB (Printed Circuit Board) with your
hand or tools. Do not allow dust to collect on the PCB.
Doing so may cause fire or an electric shock.
