2
IMPORTANT!
Please Read Before Starting
This air conditioner must be installed by the sales dealer
or installer.
This information is provided for use only by authorized
persons.
For safe installation and trouble-free operation, you
must:
●
Carefully read this instruction booklet before beginning.
●
Follow each installation or repair step exactly as shown.
●
This air conditioner shall be installed in accordance with
National Wiring Regulations.
●
This product is intended for professional use.
Permission from the power supplier is required when
installing the U-8MF3R7 outdoor unit that is connected
to a 16 A distribution network.
●
This equipment complies with EN/IEC 61000-3-12
provided that the short-circuit power Ssc is greater than
or equals to the values corresponding to each model as
shown in the table below at the interface point between
the user’s supply and the public system.
It is the responsibility of the installer or user of the
equipment to ensure; by consultation with the distribution
network operator if necessary that the equipment is
connected only to supply with a short-circuit power Ssc
greater than or equals to the values corresponding to
each model as shown in the table below.
U-10MF3R7 U-12MF3R7
Ssc 1,600 kVA 1,600 kVA
U-14MF3R7 U-16MF3R7
Ssc
2,000 kVA 2,150 kVA
●
The product meets the technical requirements of
EN/IEC 61000-3-3.
●
Pay close attention to all warning and caution notices
given in this manual.
WARNING
This symbol refers to a hazard or unsafe
practice which can result in severe
personal injury or death.
CAUTION
This symbol refers to a hazard or unsafe
practice which can result in personal
injury or product or property damage.
If Necessary, Get Help
These instructions are all you need for most installation
sites and maintenance conditions. If you require help for a
special problem, contact our sales/service outlet or your
certified dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including
failure to follow the instructions in this document.
SPECIAL PRECAUTIONS
WARNING When Wiring
WARNING
Risk of Electric Shock
ELECTRICAL SHOCK CAN
CAUSE SEVERE PERSONAL
INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD
ATTEMPT TO WIRE THIS
SYSTEM.
• Do not supply power to the unit until
all wiring and tubing are completed or
reconnected and checked.
• Highly dangerous electrical voltages are
used in this system. Carefully refer to the
wiring diagram and these instructions
when wiring. Improper connections
and inadequate grounding can cause
accidental injury or death.
• Connect all wiring tightly. Loose wiring
may cause overheating at connection
points and a possible fire hazard.
• Provide a power outlet to be used
exclusively for each unit.
• ELCB must be incorporated in the
fixed wiring. Circuit breaker must be
incorporated in the fixed wiring in
accordance with the wiring regulations.
Circuit
breaker
U-14MF3R7
40 A
U-16MF3R7
40 A
Circuit
breaker
U-8MF3R7
25 A
U-10MF3R7
25 A
U-12MF3R7
30 A
• Provide a power outlet exclusively for
each unit, and full disconnection means
having a contact separation by 3 mm
in all poles must be incorporated in the
fixed wiring in accordance with the wiring
rules.
• To prevent possible hazards from
insulation failure, the unit must be
grounded.
• This equipment is strongly recommended
to be installed with Earth Leakage
Circuit Breaker (ELCB) or Residual
Current Device (RCD). Otherwise, it may
cause electrical shock and fire in case
of equipment breakdown or insulation
breakdown.
00_341136_2WAY_Eng.indb 2 2022/9/19 9:27:10
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