
EN-1
FOR INSTALLER
When installing multi units,
refer to the installation
manual of the multi unit for
outdoor unit installation.
CONTENTS
1. BEFORE INSTALLATION ..................................1
2. INDOOR UNIT INSTALLATION .........................4
3. OUTDOOR UNIT INSTALLATION .....................5
4. PURGING PROCEDURES, LEAK TEST, AND
TEST RUN .........................................................6
5. RELOCATION AND MAINTENANCE ................7
Required Tools for Installation
Phillips screwdriver
Level
Scale
Utility knife or scissors
65 mm hole saw
Torque wrench
Wrench (or spanner)
4 mm hexagonal wrench
Flare tool for R32, R410A
Gauge manifold for R32, R410A
Vacuum pump for R32, R410A
Charge hose for R32, R410A
Pipe cutter with reamer
1. BEFORE INSTALLATION
MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT
WARNING
(Riskofre)
Thisunitusesaammablerefrigerant.
Ifrefrigerantleaksandcomesincontactwithreorheatingpart,itwillcreateharmfulgasandthereisriskofre.
ReadtheOERATINGINSTRUCTIONScarefullybeforeoperation.
ServicepersonnelarerequiredtocarefullyreadtheOERATINGINSTRUCTIONSandINSTALLATIONMANUALbeforeoperation.
FurtherinformationisavailableintheOERATINGINSTRUCTIONS,INSTALLATIONMANUAL,andthelike.
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Besuretoread“THEFOLLOINGSHOULDALASBEOBSERVEDFORSAFET”beforeinstallingtheairconditioner.
• Before starting the connection setup of the Wi-Fi interface, check the safety precautions in OPERATING INSTRUCTIONS of the room air conditioner.
Besuretoobservethewarningsandcautionsspeciedhereastheyincludeimportantitemsrelatedtosafety.
Afterreadingthismanual,besuretokeepittogetherwiththeOERATINGINSTRUCTIONSforfuturereference.
WARNING (Could lead to death, serious injury, etc.)
Do not install the unit by yourself (user).
Incomplete installation could cause re, electric
shock, injury due to the unit falling, or leakage of
water. Consult the dealer from whom you purchased
theunitoraqualiedinstaller.
Perform the installation securely referring to the
installation manual.
Incomplete installation could cause re, electric
shock, injury due to the unit falling, or leakage of
water.
When installing the unit, use appropriate protec-
tive equipment and tools for safety.
Failure to do so could cause injury.
Install the unit securely in a place which can
bear the weight of the unit.
Iftheinstallationlocationcannotbeartheweightof
the unit, the unit could fall causing injury.
Electrical work should be performed by a quali-
ed,experencedelectrcan,accordngto the
nstallatonmanual.Besuretouseanexclusve
circuit. Do not connect other electrical appli-
ances to the circuit.
Ifthecapacityofthepowercircuitisinsufcientor
there is incomplete electrical work, it could result in
areoranelectricshock.
Earth the unit correctly.
Do not connect the earth to a gas pipe, water pipe,
lightning rod, or telephone earth. Defective earthing
could cause electric shock.
Donotdamagethewresbapplngexcessve
pressure with parts or screws.
Damagedwirescouldcausereorelectricshock.
Be sure to cut off the main power in case of set-
ting up the indoor P.C. board or wiring works.
Failure to do so could cause electric shock.
Usethespecedwrestoconnectthendoor
and outdoor units securely and attach the wires
rmltothetermnalblockconnectngsectons
so the stress of the wires is not applied to the
sectons.Donotextendthewres,orusenter-
mediate connection.
Incomplete connecting and securing could cause
re.
Donotnstalltheuntnaplacewhereammable
gas may leak.
If gas leaks and accumulates in the area around the
unit, it could cause an explosion.
Do not use intermediate connection of the power
cordortheextensoncordanddonotconnect
many devices to one AC outlet.
It could cause a re or an electric shock due to
defective contact, defective insulation, exceeding
thepermissiblecurrent,etc.
Besuretousethepartsprovdedorspeced
parts for the installation work.
The use of defective parts could cause an injury or
leakageofwaterduetoare,anelectricshock,the
unit falling, etc.
When plugging the power supply plug into the
outlet, make sure that there is no dust, clogging,
or loose parts in both the outlet and the plug.
Make sure that the power supply plug is pushed
completely into the outlet.
If there is dust, clogging, or loose parts on the power
supply plug or the outlet, it could cause electric
shockorre.Ifloosepartsarefoundonthepower
supply plug, replace it.
Attach the electrical cover to the indoor unit and
the service panel to the outdoor unit securely.
If the electrical cover of the indoor unit and/or the
service panel of the outdoor unit are not attached
securely,itcouldresultinareoranelectricshock
due to dust, water, etc.
When installing, relocating, or servicing the unit,
make sure that no substance other than the
specedrefrgerant(R32enterstherefrgerant
circuit.
Any presence of foreign substance such as air
cancauseabnormalpressureriseandmayresult
in explosion or injury. The use of any refrigerant
otherthanthatspeciedforthesystemwillcause
mechanical failure, system malfunction, or unit
breakdown.Intheworstcase,thiscouldleadtoa
serious impediment to securing product safety.
Do not discharge the refrigerant into the atmos-
phere. If refrigerant leaks during installation,
ventilate the room. Check that the refrigerant
does not leak after installation has been com-
pleted.
Ifrefrigerantleaksandcomesincontactwithreor
heating part of such a fan heater, kerosene heater,
or cooking stove, it will create harmful gas. Provide
ventilation in accordance with EN378-1.
Use appropriate tools and piping materials for
installation.
The pressure of R32 is 1.6 times more than R22. Not
using appropriate tools or materials and incomplete
installationcouldcausethepipestoburstorinjury.
When pumping down the refrigerant, stop the
compressor before disconnecting the refriger-
ant pipes.
If the refrigerant pipes are disconnected while the
compressor is running and the stop valve is open,
aircouldbedrawninandthepressureintherefrig-
erationcyclecouldbecomeabnormallyhigh.This
couldcausethepipestoburstorinjury.
When installing the unit, securely connect the
refrigerant pipes before starting the compres-
sor.
Ifthecompressorisstartedbeforetherefrigerant
pipes are connected and when the stop valve is
open,aircouldbedrawninandthepressureinthe
refrigerationcyclecouldbecomeabnormallyhigh.
Thiscouldcausethepipestoburstorinjury.
Fastenaarenutwthatorquewrenchasspec-
ednthsmanual.
Iffastenedtootight,aarenutmaybreakaftera
long period and cause refrigerant leakage.
The unit shall be installed in accordance with
national wiring regulations.
When usng a gas burner or other ame-pro-
ducing equipment, completely remove all of the
refrigerant from the air conditioner and ensure
that the area is well-ventilated.
Iftherefrigerantleaksandcomesincontactinre
or heating part, it will create harmful gas and there
isriskofre.
Do not use means to accelerate the defrosting
process or to clean, other than those recom-
mended by the manufacturer.
The appliance shall be stored in a room without
continuously operating ignition sources (for
exampleopenames,anoperatnggasappl-
ance or an operating electric heater).
Do not pierce or burn.
Be aware that refrigerants may not contain an
odour.
Pipe-work shall be protected from physical dam-
age.
The installation of pipe-work shall be kept to a
minimum.
Compliance with national gas regulations shall
be observed.
Keep any required ventilation openings clear of
obstruction.