Installation Instructions

Aftertheconfirmationoftheaboveconditions,preparethewiringasfollows:
1)Neverfailtohaveanindividualpowercircuitspecificallyfortheairconditioner.Asfor
themethodofwiring,beguidedbythecircuitdiagrampostedontheinsideofcontrol
cover.
2)Thescrewwhichfastenthewiringinthecasingofelectricalfittingsareliabletocome
loosefromvibrationstowhichtheunitissubjectedduringthecourseof
transportation.Checkthemandmakesurethattheyarealltightlyfastened.(Ifthey
areloose,itcouldcauseburn-outofthewires.)
3)Specificationofpowersource.
4)Confirmthatelectricalcapacityissufficient.
5)Seetothatthestartingvoltageismaintainedatmorethan90percentoftherated
voltagemarkedonthenameplate.
6)Confirmthatthecablethicknessisasspecifiedinthepowersourcespecification.
7)Alwaysinstallanearthleakagecircuitbreakerinawetormoistarea.
8)Thefollowingwouldbecausedbyvoltagedrop.
Vibrationofamagneticswitch,whichwilldamagethecontactpoint,fusebreaking,disturbanceofthe
normalfunctionoftheoverload.
9)Themeansfordisconnectionfromapowersupplyshallbeincorporatedinthefixed
wiringandhaveanairgapcontactseparationofatleast3mmineachactive(phase)
conductors.
Airandmoistureintherefrigerantsystemhaveundesirableeffectsasindicatedbelow:
Pressureinthesystemrises.
Operatingcurrentrises.
Coolingorheatingefficiencydrops.
Moistureintherefrigerantcircuitmayfreezeandblockcapillarytubing.
Watermayleadtocorrosionofpartsintherefrigerationsystem.
Therefore,theindoorunitandtubingbetweentheindoorandoutdoorunitmustbeleaktested
andevacuatedtoremoveanynoncondensablesandmoisturefromthesystem.
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Airpurgingwithvacuumpump
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Preparation
Checkthateachtube(bothliquidandgassidetubes)betweentheindoorandoutdoorunits
havebeenproperlyconnectedandallwiringforthetestrunhasbeencompleted.Remove
theservicevalvecapsfromboththegasandtheliquidsideontheoutdoorunit.Notethat
boththeliquidandthegassideservicevalvesontheoutdoorunitarekeptclosedatthis
stage.
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Pipelengthandrefrigerantamount:
Connective
pipelength
Lessthan5m
Morethan5m
Airpurging
method
Usevacuum
pump.
Usevacuum
pump.
Additionalamountofrefrigeranttobecharged
AIRPURGING
Airpurging
27
R22:(Pipelength-5m)x30g/m
R410A:(Pipelength-5m)x15g/m
R407c:(Pipelength-5m)x30g/m