Electrical Wiring; The Precautions Of Electrical Wiring - Fujitsu AIRSTAGE K00250LW Addendum

b) Non-installable patterns
PROHIBITED
Master Slave
unit unit 1
To indoor unit
Slave
Master
PROHIBITED
unit 1
unit
To indoor unit
PROHIBITED Master Slave
unit unit 1
To indoor unit
(2) If the pipe length between outdoor unit branch kit and outdoor unit branch kit (or
slave unit) is longer than 6 ft (2 m), or a lower pipe line exists between outdoor
units, rise for gas pipe (Discharge gas pipe and Suction gas pipe) should be ar-
ranged to eliminate oil from entering into and remaining at pipes and the stopped
outdoor unit. However, there is no need to provide a rise on the pipe connecting
between the master unit and the indoor unit even if the length exceeds 6 ft (2 m).
Master Slave
unit unit 1
To indoor unit
L1 or less L1 or less
Master
unit
To indoor unit
L1 or less
L1 or more
Master Slave
unit unit1
To indoor unit

6. ELECTRICAL WIRING

6. 1.

The precautions of electrical wiring

Wiring connections must be performed by a qualifi ed person in accordance with
specifi cations.
The rated supply of this product is 60Hz, 208/230 V of 3-phase, 3-wire. Use a voltage
within the range of 187 to 253 V.
Make sure to perform earthing (grounding) work. Improper earthing (grounding) work
can cause electric shocks.
Before connecting the cables, make sure the power supply is OFF.
We suggest installing GFEB breakers or follow local electrical code. When installing
this system, install using ground fault equipment breakers (GFEB) to reduce the risk of
leaking current which may result in electric shock or potential fi re.
Slave
unit 2
Slave
unit 2
Slave
unit 2
L1 : 6 ft (2m)
L2 : 8 in (200 mm)
Slave
L3 : 19 in (500 mm)
unit 2
Suction gas pipe
Discharge gas pipe
Slave Slave
unit1 unit2
Rise
(L2 or more)
Suction gas pipe
Discharge gas pipe
L1 or less
L1 or more
Slave
unit2
Rise
Suction gas pipe
lower pipe
Discharge gas pipe
WARNING
WARNING
Be sure to install a breaker of the specifi ed capacity. When selecting breaker, please
comply with the laws and the regulations of each country. One breaker must be
installed on the power supply of the outdoor unit. Wrong selection and setup of the
breaker will cause electric shock or fi re.
Do not connect AC power supply to the transmission line terminal board.
Improper wiring can damage the entire system.
Connect the connector cord securely to the terminal.
Faulty installation can cause a fi re.
Do not modify power cable, use extension cable or branch wiring. Improper use may
cause electric shock or fi re by poor connection, insuffi cient insulation or over current.
Make sure to secure the insulation portion of the connector cable with the cord
clamp. A damaged insulation can cause a short circuit.
Never install a power factor improvement condenser. Instead of improving the power factor,
the condenser may overheat.
Before servicing the unit, turn the power supply switch OFF. Then, do not touch elec-
tric parts for 10 minutes due to the risk of electric shock.
Always use a separate power supply line protected by a circuit breaker operating on
all cables with a distance between contact of 1/8 in (3 mm) for this unit.
Use ring terminals and tighten the terminal screws to the specifi ed torques, otherwise,
abnormal overheating may be occurred and possibly cause serious damage inside
the unit.
Securely install the electrical box cover on the unit. An improperly installed service
panel can cause serious accidents such as electric shock or fi re through exposure to
dust or water.
If the supply cable is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualifi ed persons in order to avoid a hazard.
CAUTION
The primary power supply capacity is for the air conditioner itself, and does not include the
concurrent use of other devices.
Connect the power cables in positive phase sequence. If they are connected in nega-
tive phase sequence, an error will be displayed. If there is a missing phase connec-
tion, the unit will not operate normally.
Do not use crossover power supply wiring for the outdoor unit.
If the electrical power is inadequate, contact your electric power company.
Install a breaker in a location that is not exposed to high temperatures.
If the temperature surrounding the breaker is too high, the amperage at which the
breaker cuts out may decrease.
This system uses an inverter, which means that when used with a ground fault
breaker you must use breakers that can handle harmonics such as a (GFEB) Ground
Fault Equipment Breaker (100 mA or greater) in order to prevent malfunctioning of
ground fault device.
When the electrical switchboard is installed outdoors, place it under lock and key so
that it is not easily accessible.
Never bundle the power supply cable and transmission cable, remote control cable
together. Separate these cable by 2 in (50 mm) or more. Bundling these cables
together will cause miss operation or breakdown.
Always keep to the maximum length of the transmission cable. Exceeding the maxi-
mum length may lead to erroneous operation.
The static electricity that is charged to the human body can damage the control PC
board when handling the control PC board for address setting, etc.
Please keep caution to the following points.
Provide the earthing (grounding) of Indoor unit, Outdoor unit and Option equipment.
Cut off the power supply (breaker).
Touch the metal section (such as the unpainted control box section) of the indoor or
outdoor unit for more than 10 seconds. Discharge the static electricity in your body.
Never touch the component terminal or pattern on the PC board.
En-12