10 ELECTRIC WIRING
10.1 GENERAL CHECK
! DANGER
• Do not connect or adjust any wiring or connections unless the
main power switch is OFF. Check and test to ensure that if there
is more than one source of power supply, all are turned OFF.
• Use an earth leakage breaker with medium sensitivity, and an
activation speed of 0.1 or less. If this is not tted, there is a risk
of electric shock and/or re.
• Install an earth leakage breaker, fuse or circuit breaker of the
specic capacity for each outdoor unit power line. Not tting it
may cause an electric shock or re.
• Check that the earth wire is securely connected, tagged and
locked in accordance with national and local codes.
! CAUTION
• Beforeanyworktotheelectricalwiringorregularinspections,switch
offthemainspowersupplyoftheindoorandoutdoorunits.Waitthree
minutesbeforestartinginstallationormaintenancework.
• Makesurethattheinteriorandexteriorfanshavecometoacomplete
standstill before starting work on the electrical wiring or regular
inspections.
• Protect cables, the drainage pipe, electrical components, etc. from
rodents and insects; otherwise these might damage unprotected
componentsandthiscouldresultinre.
• Donotallowcablestocomeintocontactwiththerefrigerantpipes,
metaledges,printedcircuitboards(PCB)ortheelectriccomponents
insidetheunit;thecablesmaybedamagedandthiscouldresultin
re.
• Makesuretherefrigerantpipesandcommunicationcablesbetween
theoutdoorandindoorunitsareconnectedtothesamerefrigeration
cycle.Failuretodosocouldleadtoabnormaloperationsoraserious
accident.
• Makesurethattheeld-suppliedelectriccomponentsintheinstallation
(mainspowerswitches,earthleakagebreaker,circuitbreaker,cables,
connectors, cable terminals and others) have been selected and
installcorrectlyinlinewiththeelectricaldatagiveninthisManual.Also
makesurethatthesecomponentsarecompliantwithlocal,national
andregionalelectricalregulations,codesandstandards
• Connectingtheoperatinglinecablesincorrectlymayleadtofaultsin
thePCB.
• Firmlysecurethecablesinsidetheoutdoorunitwithplasticanges.
• Checktoensurethatscrewsforterminalblockaretightlytightened.
• Secure the cable of theremote control switch with the cord clamp
insidetheelectricalbox.
• Wrapthe accessory packing around thewires,and plug the wiring
connectionholewiththesealmaterialtoprotecttheproductfromany
condensedwaterandinsects.
• Checktoensurethattheindoorfanandtheoutdoorfanhavestopped
beforeelectricalwiringworkorperiodicalcheckisperformed.
• Leadthewiresthroughtheknockoutholeinthesidecoverwhenusing
conduit.
• Secure the cable of theremote control switch with the cord clamp
insidetheelectricalbox.
• Electricalwiringmustcomplywithnationalandlocalcodes.Contact
yourlocalauthorityinregardstostandards,rules,regulations,etc.
• Makesuretheelectriccomponentsintheinstallation(earthleakage
breaker,circuitbreaker,cables,connectors,cableterminalsandmain
powerswitches)havebeenselectedcorrectlyinlinewiththeelectrical
datagiveninthisManual.Alsomakesurethatthesecomponentsare
compliantwithnationalandlocalcodes.
• Checkthatthegroundwireissecurelyconnected.
• ConnectafuseorCBofspeciedcapacity.
? NOTE
• To avoid electromagnetic noise interferences use shielded wires
for H-LINK communication twist pair wire (more than 0.75 mm²)
operationwiringbetweenoutdoorunitandindoorunit,andoperation
wiringbetweenindoorunitandindoorunit.
• H-LINKtwistpairshieldedwiremustbegroundedintheoutdoorunit
side.
• Using cable sections between units no longer than 300 m, and
using cables according to local codes and regulations. H-LINK
communicationcircuitshallbenotlongerthan1000mintotallength
• Sometimes, the refrigeration/heating system is not able to operate
correctly in cases when the system is supplied from the same
supply line as other major consumers (heavy machinery, power
inverter systems, cranes, welding machinery, etc). Also when the
supplycablesofthemajorconsumersandthesystemareveryclose
together,inductioninthewiringmayariseduetoarapidchangein
theelectricityconsumptionoftheaboveconsumersandtheirstart-up.
• Checkand test to ensure that if there is more thanone source of
powersupply,thatallareturnedOFF.
• Check the connection of the power wiring terminals and supply
voltageaccordingtoeachmodelspecication.
1
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
MODEL Z
max
(Ω) MODEL Z
max
(Ω)
0.30 -
0.30 -
0.30 -
2 Harmonics situation of each model regarding EN 61000-3-2
and EN 61000-3-12 is as follows:
MODELS SITUATION
REGARDING EN 61000-3-2
AND EN 61000-3-12 Ssc “xx”
MODELS
Ssc
“xx”
(KVA)
Equipment complying with
EN 61000-3-2 (professional use)
-
Equipment complying with
EN 61000-3-12
633
3 Check to ensure that the power supply voltage is within
4 Check to ensure that power supply has an impedance low
enough to warranty not reduce the starting voltage more
Electric wiring
PMML0545 rev.2 - 04/2021
13
EN
To Next Page
Loading...
Need help?
General
