En-8
Blank cap
Flare nut
90°
Torque wrench
Holding
wrench
Torque wrench
Flare nut [in (mm)]
Tightening torque [lbf·ft (N·m)]
1/4 (6.35) dia.
11.8 to 13.3 (16 to 18)
3/8 (9.52) dia.
23.6 to 31.0 (32 to 42)
1/2 (12.70) dia.
36.1 to 45.0 (49 to 61)
5/8 (15.88) dia.
46.5 to 55.3 (63 to 75)
3/4 (19.05) dia.
66.4 to 81.1 (90 to 110)
In the case of AOU60RLAVM
It is necessary to change a connection pipe diameter by using Reducer.
(1) Reducer must be brazed in the outside of the outdoor unit.
(2) Distance between 3-way valve and reducer
≤
3 ft (1 m)
(3) The part of Reducer do insulation processing after brazing.
Example: Case of front connection
Connection pipe (Gas)
(Pipe outside dia.: 3/4 in (19.05 mm))
Brazing
3ft (1m) or less
Reducer
(accessory)
Connection pipe (Gas)
(Pipe outside dia.: 5/8 in (15.88 mm))
5. 4. 4. Handling precautions for the valves
• Mounted part of Blank cap is sealed for protection.
• Fasten blank cap tightly after opening valves.
Operating the valves
• Use a hexagon wrench (size 3/16 in (4 mm)).
Opening:
(1) Insert the hexagon wrench into the valve shaft, and turn it counterclockwise.
(2) Stop turning when the valve shaft can no longer be turned. (Open position)
Closing:
(1) Insert the hexagon wrench into the valve shaft, and turn it clockwise.
(2) Stop turning when the valve shaft can no longer be turned. (Closed position)
Opening direction
Hexagon wrench
Seal (blank cap
installation portion)
Liquid pipe
Gas pipe
Opening direction
6. ELECTRICAL WIRING
6. 1. The precautions of electrical wiring
WARNING
Wiring connections must be performed by a quali
fi
ed person in accordance with
speci
fi
cations.
The rated supply of this product is 60 Hz, 208/230 V of 1-phase. Use a voltage within the
range of 187-264 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 leak-
ing current which may result in electric shock or potential
fi
re.
Be sure to install a breaker of the speci
fi
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, insuf
fi
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 fac-
tor, the condenser may overheat.
CAUTION - Risk of Electric Shock
Before servicing the unit, turn the power supply switch OFF. Then, do not touch electric
parts for 20 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 speci
fi
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 quali
fi
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 there is a missing phase con-
nection, the unit will not operate normally.
Do not 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 maximum
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.
9380545095_IM.indb 8
9380545095_IM.indb 8
11/17/2015 4:14:26 PM
11/17/2015 4:14:26 PM
