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Please Read Before Starting
This information is provided for use only by authorized
installing the U-4LE1E8, U-5LE1E8, U-6LE1E8,
outdoor units that are connected to a 16 A distribution
than or equal to the following table 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 a supply with a short-
circuit power Ssc greater than or equal to the value in
or equal 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. Consult with
the supply authority for the system impedance Zmax.
practice which can result in severe
personal injury or death.
practice which can result in personal injury
or product or property damage.
sites and maintenance conditions. If you require help for a
special problem, contact our sales/service outlet or your
certified dealer for additional instructions.
improper installation or maintenance service, including
failure to follow the instructions in this document.
SEVERE PERSONAL INJURY OR DEATH.
ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO
WIRE THIS SYSTEM.
Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and
inadequate grounding can cause accidental injury or
in accordance with the wiring regulations.
in all poles must be incorporated in the fixed wiring in
accordance with the wiring rules.
outdoor units. Get a partner to help, and bend your knees
when lifting to reduce strain on your back. Sharp edges
or thin aluminum fins on the air conditioner can cut your
contact of the refrigerant gas with a flame as this will
cause the generation of poisonous gas.
then tighten the nut with a torque wrench for a leak-free
Handle liquid refrigerant carefully as it may cause
refrigerant (R410A) in refrigeration
cycle. It causes capacity down, and
risk of explosion and injury due to
high tension inside the refrigerant
Do not add or replace refrigerant
other than specified type.
It may cause product damage, burst
and injury etc.
electrical parts and wiring.
check that no metal scraps or bits of wiring have been
left inside the unit being serviced.
outdoor units by users. Engage
authorized dealer or specialist for
In case of malfunction of this
appliance, do not repair by yourself.
Contact to the sales dealer or service
dealer for a repair.
outdoor unit. You may get injured.
system. Escaped refrigerant gas, on
contact with fire or heat, can produce
dangerously toxic gas.
comes in contact with a burning stove,
gas water heater, electric room heater
or other heat source, it can cause the
generation of poisonous gas.
sharp aluminum fins of the
outdoor unit. You may get injured.
you may fall down accidentally.
You may be injured and the
unit may be damaged.
enough to support or hold the unit, and select a location
for easy maintenance.
…In a Room
Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to
walls and floors.
1.5 m away from the unit.
Use a raised concrete pad or concrete blocks to provide
a solid, level foundation for the outdoor unit. This prevents
water damage and abnormal vibration.
…In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle.
…In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher
than drifting snow. Provide snow vents.
· This product does not contain any hazardous
· You are requested to use RoHS compliant
for ventilation of leaking refrigerant gas (opening without
a door, or an opening 0.15% or larger than the respective
floor spaces at the top or bottom of the door).
the refrigerant tubing is interconnected, the smallest room
of course becomes the object. But when mechanical
ventilation is installed interlocked with a gas leakage
detector in the smallest room where the density limit is
exceeded, the volume of the next smallest room becomes
amount of refrigerant is roughly as follows: (When the
ceiling is 2.7 m high)
requires a design that in the event of refrigerant gas
leaking out, its density will not exceed a set limit.
is safe, without the toxicity or combustibility of ammonia, and
is not restricted by laws imposed to protect the ozone layer.
However, since it contains more than air, it poses the risk of
suffocation if its density should rise excessively. Suffocation
from leakage of refrigerant is almost non-existent. With the
recent increase in the number of high density buildings,
however, the installation of multi air conditioner systems is
on the increase because of the need for effective use of floor
space, individual control, energy conservation by curtailing heat
and carrying power, etc.
Most importantly, the multi air conditioner system is able
to replenish a large amount of refrigerant compared to
conventional individual air conditioners. If a single unit of the
multi air conditioner system is to be installed in a small room,
select a suitable model and installation procedure so that if the
refrigerant accidentally leaks out, its density does not reach the
limit (and in the event of an emergency, measures can be made
before injury can occur).
In a room where the density may exceed the limit, create an
opening with adjacent rooms, or install mechanical ventilation
combined with a gas leak detection device. The density is as
conditioners is 0.3 k
refrigerating device, the amount of refrigerant should be as
charged in each independent device.
B and C is 10 k
E and F is 15 k
amount (10 k
amount (15 k
density limit of
density limit of 0.3