Service Manual

4. Electrical wiring
88
SMGB0079 rev.0 - 01/2013
4.1 General notes
C A U T I O N
• Beforeanyelectricalwiringworkorregularinspections,switchoffthemainpowersupplyswitchesofthein-
doorandoutdoorunits.Waitthreeminutesbeforestartinginstallationormaintenancework.
• Makesurethattheindoorandoutdoorarecompletelystoppedbeforestartingworkontheelectricalwiringor
regularinspections.
• Protectcables,drainhose,electricparts,etc.fromrodentsandinsects;otherwisethesemightdamageunpro-
tectedcomponentsand,intheworstcase,causeare.
• Wraptheaccessorypackingaroundthewires,andplugthewiringconnectionholewiththesealmaterialto
protecttheproductfromanycondensedwaterandinsects.
• Donotallowcablestocomeintocontactwiththerefrigerantpipes,metaledges,printedcircuitboards(PCB)
ortheelectricpartsinsidetheunit;thecablesmaybedamagedand,intheworstcase,causeare.
• Tightlysecurethewireswiththecordclampinsidetheindoorunit.
• Leadthewiresthroughtheknockoutholeinthesidecoverwhenusingconduit.
• Securethecableoftheremotecontrolswitchwiththecordclampinsidetheelectricalbox.
• Electricalwiringmustcomplywithnationalandlocalcodes.Contactyourlocalauthorityinregardstostan-
dards,rules,regulations,etc.
D A N G E R
• DonotconnectofadjustanywiringorconnectionsunlessthemainpowerswitchisOFF.
• Useanearthleakagebreakerwithmediumsensitivity,andanactivationspeedof0.1secorless.Ifthisisnot
tted,thereisariskofelectricshockand/orre.
• Installanearthleakagebreaker,fuseandcircuitbreakerforeachoutdoorunitpowerline.Notttingitmay
causeanelectricshockorre.
• Neverconnecttheearthcabletotherefrigerantpipes.Thegasinthepipescouldcauseare.
• Donotconnecttheearthcabletothelightingarrestsystem.Theelectricalpotentialofearthwouldincrease
abnormally.
N O T E
• Fixtherubberbusheswithadhesivewhentheoutdoorunitductsarenotused.
4.1.1 General check
1 Ensure that the eld-supplied electrical components (mains power switches, circuit breakers, wires, connectors and
wire terminals) have been properly selected according to the electrical data indicated. Make sure that they comply with
national and regional electrical codes.
2 Following the Council Directive 2004/108/EC(89/336/EEC), relating to electromagnetic compatibility, next table indicates:
Maximum permissible system impedance Z
max
at the interface point of the user’s supply, in accordance with EN61000-
3-11.