Safety precautions
v When install the unit, be sure to check whether the s election of installa tion pla ce, powe r supply specifications, usage limitation (piping
length, h eight differences between indoor and o utdoor units, power supply voltage and etc .) and installation spaces.
v We recommend you to read this “SAFETY PRECAUTIONS” carefully before the installation work in order to gain full advantage of the func-
tions of the unit and to avoid malfunction due to mishandling.
v The precautions described below are divided into
WARNING and CAUTION . The matters with possibilities leading to serious conse-
quences such as death or serious personal injury due to erroneous handling are listed in the WARNING and the matters with possibilities
leading to personal injury or damage of the unit due to erroneous handling including probability leading to serious consequences in some cases
are listed in
CAUTION . These are very important precautions for safety. Be sure to observe all of them without fail.
v Be sure to confirm no anomaly on the equipment by commissioning after completed installation and explain the operating methods as well as the
maintenance methods of this equipment to the user according to the owner’s manual.
v Keep the installation manual together with owner’s manual at a place where any user can read at any time. Moreover if necessary, ask to hand
them to a new user.
v For installing qualified personnel, take precautions in respect to themselves by using suitable protective clothing, groves, etc., and then perform
the installation works.
v Please pay attention not to fall down the tools, etc. when installing the unit at the high position.
v If unusual noise can be heard during operation, consult the dealer.
v Symbols which appear frequently in the text have the following meaning:
Observe instructions
with great care
Strictly prohibited Provide proper earthing
WARNING
v Installat ion must b e carried out by the qualified installer .
If you install the sys tem by yourself, it ma y ca use ser ious tro uble su ch a s
water le aks, elec tric shoc ks, fire and p ersonal i njury, as a res ult of a sy stem
malfunct ion.
v Install t he system in full ac cordance w ith the in struction manual.
Incorrect ins tallation m ay cause bu rsts, perso nal injury, wat er leaks, el ectric
shocks an d fire.
v Be sure t o use only for house hold and r esidence.
If t his appl iance is installed in infe rior env ironment such as machine s hop
and etc., it can cause malfunction.
v
Use the origi nal accessor ies and the spec ified compon ents for insta llation.
If parts ot her than those presc ribed by us are u sed, It may caus e water lea ks,
electric shocks, fi re and per sonal inju ry.
v Install t he unit in a locatio n with goo d support.
Unsuitabl e installat ion location s can cause the u nit to fall and ca use material
damage an d personal in jury.
v Ensure the u nit is st able whe n installed, so t hat it can withstand e arth-
quakes an d strong winds.
Unsuitabl e installat ion location s can cause the u nit to fall and ca use material
damage an d personal in jury.
v Ventilate th e working ar ea well in the ev ent of re frigerant le akage dur -
ing insta llation.
If t he r efrigerant comes into contact with na ked flames, poisonous gas is
produced .
v When insta lling in sma ll rooms, t ake prevent ion measure s not to exc eed
the densi ty limit o f refrige rant in th e event of leakage.
Consult the expe rt about pr evention measures. I f the density o f ref rigerant
exceeds the limit in the event of leakage, lac k of oxygen ca n occu r, whi ch
can cause se rious acci dents.
v After completed installation , c heck th at no refrigera nt leak s f rom th e
system.
If re frigerant leaks into t he roo m and comes into cont act wi th an oven o r
other hot surface, poi sonous gas is produ ced.
v Tighten t he flare n ut by torq ue wrench with spec ified meth od.
If the f lare nut w ere tightened wi th exces s torque , this ma y cause b urst and
refrigera nt leakag e after a long perio d.
v Do not op en the op eration val ves for l iquid li ne and ga s line un til com-
pleted re frigerant piping wo rk, air ti ghtness te st and eva cuation.
If the c ompressor i s ope rated in sta te o f ope ning ope ration valves before
completed connection o f refrig erant pi ping wor k, air can b e sucked i nto refrigerant c ircuit, whic h can cause bust or p ersonal inju ry due to anomalo usly
high pres sure in th e refrige rant.
v Do not put the dra inage pipe dire ctly into d rainage ch annels whe re poi-
sonous ga ses such a s sulphid e gas can occu r.
Poisonous g ases will flo w into the room t hrough drain age pipe and ser iously
affect th e user’s health and safety.
v Ensure th at no a ir ente rs in t he refr igerant circui t when the unit is in-
stalled a nd removed .
If a ir ent ers i n the refrigerant circuit, t he pre ssure in the ref rigerant circuit
becomes t oo high, w hich can cause burs t and pers onal injur y.
v Do n ot pr ocessing, splice the power cord , or sh are a socket wi th ot her
power plu gs.
This may c ause fire o r electri c shock due to de fecting c ontact, defectin g insulation and over-c urrent etc.
v The ele ctrical i nstallatio n mu st be carried o ut by the q ualified electri-
cian i n ac cordance w ith “the norm f or elec trical work” a nd “nat ional
wiring re gulation”, and the s ystem must be connec ted to the dedic ated
circuit.
Power s upply wi th insuf ficient cap acity an d incorr ect func tion don e by i mproper wo rk can cau se electr ic shocks and fire.
v Be sure t o shut off the power before st arting ele ctrical work.
Failure t o shut off the pow er can caus e electric sho cks, unit fail ure or inc orrect func tion of eq uipment.
v Be sur e to use the ca bles co nforme d t o s afet y s tandar d a nd cabl e
ampacity for pow er distrib ution work .
Unconform able cables ca n cause electri c leak, anomalo us heat produc tion or
fire.
v This ap pliance mus t be con nected to ma in powe r suppl y by mean s of a
circuit bre aker or switch (fuse:20 A) with a conta ct separatio n of at least
3mm.
v Wh en p lugg ing t his a pp lia nce, a pl ug co nfo rmi ng t o the n orm
IEC60884- 1 must be use d.
v Use the p rescribed cables for electrical connection , tig hten the cabl es
securely in terminal block a nd re lieve the cab les correctly to pre vent
overloadi ng the ter minal bloc ks.
Loose conn ections or ca ble mounting s can cause an omalous heat prod uction
or fire.
v Arrange the wi ring i n t he co ntrol box so that it ca nnot b e push ed up
further i nto the bo x. Install th e service pane l correct ly.
Incorrect installa tion may r esult in o verheating and fire.
v Be sure t o fix up t he service pa nels.
Incorrect fixing can c ause ele ctric s hocks or fire due to in trusion of d ust or
water.
v Be sure to switch off the power suppl y in the event of installation , inspec-
tion or s ervicing.
If th e p ower s upply is not shut off, t here i s a risk of el ectric shocks, u nit
failure o r personal injury du e to the u nexpected start o f fan.
v Stop the co mpressor before disconnecti ng ref rigerant pipes in ca se of
pump down op eration.
If disconne cting refrig erant pipes in st ate of opening o peration val ves before
compresso r stop ping, air can be s ucked, whi ch can cause bu rst or personal
injury du e to anoma lously hig h pressure in the re frigerant circuit
v Only use prescribed option parts. The installation mus t be carried out by
the quali fied insta ller.
If yo u ins tall t he sys tem b y y ourself, it ca n caus e ser ious t rouble such as
water lea ks, electric shoc ks, fire.
v Do not b undling, wi nding o r proces sing for the power cord . Or, do n ot
deforming the power plug due to tread i t.
This may cau se fire or heating.
v Do not ve nt R410A into th e atmosph ere : R41 0A is a f luorinated gr een-
house g as, cove red by the K yoto Prot ocol wit h Global W arming Po tential (GWP )=1975.
v Do not ru n the unit wit h removed panels or protectio ns.
Touching r otating equ ipments, ho t surfa ces or h igh volt age par ts can c ause
personal injury due to entrap ment, burn or electric sho cks.
v
Do not perfor m any change of pro tective devi ce itself or its se tup conditio n.
The forced oper ation by short-c ircuiting pro tective devic e of pressure switc h
and temperature c ontrol or the use of non specified compon ent can cause fire
or burst.
v Carry out the elect rical work fo r ground l ead with c are.
Do not co nnect the gro und lead t o the gas line , water li ne, lightn ing conduc tor or telephone lin e’s ground lea d. Incorre ct grounding can cau se unit fa ults such
as electr ic shocks due to shor t-circuit ing.