EHC SLIMJIM - Electrical Connections; Electrical Load Check & Earthing; Connection Points & Boiler Protection; External Controls Integration

12
GB-063C_f.615
ELECTRICAL CONNECTIONS
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All wiring must be carried out in accordance with current IEE wiring regulations BS:7671
(all electrical connections must be made by a qualied tradesperson).
LOAD CHECK
Aloadcheckmustbetakenintoconsiderationwheninstallinghighpowerboilers.Thiswillbecarriedoutbya
qualiedelectrician.Theremaybeanadditionalrequirementtoupgradetheincomingmainfusesupplyingthe
propertyifotherhighpowerdevicesareusedwithintheproperty.E.gElectricShowers.Ifanelectricshower
ispresentwerecommendthataShowerSensorisinstalledwithinthesystem.Thiswillcauseaninterruptto
theboilerscontrolsignalwhentheshowerisinuse.Itwilldisabletheboilerprotectingtheelectricalsystem
fromoverload.
Allboilersmustbeprotectedatthemeterpositionwitha30mAdoublepoleRCDwithaminimumof3mm
contactseparationaccompaniedbyasuitableratedMCB.Iftheboilerisnotttedlocaltothemeterposition
thenanadditionalisolationswitchmustbettedlocaltotheboilerforeachsupply.
THIS APPLIANCE MUST BE EARTHED.
Allpipe-workmustbeearthedinaccordancewiththeIEEBS7671WiringRegulations.
Aftercompletionofallelectricalworks,anelectricalsafetycheckshouldbecarriedouti.e.shortcircuit,earth
continuity,resistancetoearthandpolaritycheck,andallrelevantTestCerticatescompleted.
ELECTRICAL CONNECTIONS
TheelectricalconnectionsareclearlymarkedinthebottomLHSideoftheunit.
L N
(24hrLIVE)
The24hr liveis thepermanent Feedconnection tothe boilerfrom themains
supply.Externalcontrolswillrequireanindependentfusedspursuppliedfromthe
consumerunit,howeverthisfusedspurshouldbesuppliedbythesamepower
source&protectedbythesameRCDastheboileritself,thecontrolcircuitshould
beprotectedbya6AmpMCB.TheBoiler&controlcircuitRCDshouldbeindepend-
entofallotherdomesticcircuits.Theboilersupplycableshouldbecalculatedby
themeansofacablecalculationinaccordancewithBS7671byasuitablyqualied
electrician.
BOILER PROTECTION
Therecommendedprotectionisasfollows:
MODEL NO BOILER SIZE PROTECTION
EHCSJIM4KW-4kWOUTPUT BOILER20AMPProtection
EHCSJIM7KW-7kWOUTPUT BOILER40AMPProtection
EHCSJIM10KW-10kWOUTPUT BOILER50AMPProtection
EHCSJIM12KW-12kWOUTPUT BOILER63AMPProtection
EHCSJIM14.4KW-14.4kWOUTPUT BOILER80AMPProtection
EXTERNAL CONTROLS
WerecommendtheuseoftheSingleChannelHeatPackforheatingonlyinstallations.ForHeatingandHot
waterinstallationswerecommendtheuseoftheTwinChannel’HeatPack’.
The‘HeatPack’willincorporatealltherelevantpartstocomplywithcurrentbuildingregulationsi.eCirculation
Pump&MotorizedValvestocontroltheheatingandhotwatercircuitsandRoomandCylinderThermostats
tocontroltheroomandhotwatertemperatures.Thiswillalsoprovideboilerinterlock.TheuseofTRV’salone
willnotprovideboilerinterlock.
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!
This control method is recommended by TACMA (The Association of Control Manufactures)
in order to comply with the current building regulations.