Installation manual22 EBHQ006+008BAV3 + EKCBX/H008BAV3Unit for air to water heat pump system4PW64602-1A – 09.201012.2. Outdoor unit – Internal wiring – Parts tableRefer to the wiring diagram sticker on the top plate of the outdoorunit. The abbreviations used are listed below:A3P,A4P ................... Printed circuit boardE1,E2 ....................... ConnectorE1H .......................... Expansion vessel heaterE2H .......................... Bottom plate heater (option)FU1 .......................... Fuse (30 A, 250 V)FU2,FU3................... Fuse (F, 3.15 A, 250 V)FU4,FU5................... Fuse (F, 1.0 A, 250 V)HR1,HR2.................. ConnectorL1R........................... ReactorLED A....................... Pilot lampM1C.......................... Motor (compressor)M1P.......................... PumpM2F .......................... Motor (fan)MRC/W..................... Magnetic relayMRM10,MRM20 ....... Magnetic relayPM1.......................... Power moduleQ1L .......................... Overload protectorR1T~R3T.................. ThermistorR11T ........................ Outlet water heat exchanger thermistorR13T ........................ Refrigerant liquid side thermistorR14T ........................ Inlet water heat exchanger thermistorS1L........................... FlowswitchS1T........................... Thermostat expansion vessel heaterS2~S102 .................. ConnectorSA2 .......................... Surge arresterSW1 ......................... Forced operation ON/OFF SW (SW1)SW4 ......................... Local setting SW (SW4)U............................... ConnectorV............................... ConnectorV2,V3,V5,V9,V100 ... VaristorW.............................. ConnectorX1M~X4M ................ Terminal stripX1Y~X4Y.................. ConnectorX11A,X12A............... ConnectorX13Y ........................ Connector (indoor unit)X14M........................ Terminal strip (indoor unit)Y1E .......................... Electronic expansion valve coilY1R .......................... Reversing solenoid valve coilZ1C~Z7C.................. Ferrite coreZ1F........................... Noise filter (with surge absorber)L ............................... LiveN............................... NeutralSHEET METAL......... Terminal strip fixed plate................. Field wiring.................... Terminal strip.................... Connector........................... Terminal............................ Protective earthBLK .......................... BlackBLU .......................... BlueBRN.......................... BrownGRN ......................... GreenGRY.......................... GreyORG ......................... OrangePNK.......................... PinkRED.......................... RedVIO ........................... VioletWHT ......................... WhiteYLW.......................... YellowNOTESOUTDOOR UNIT...................Outdoor unitINDOOR UNIT.......................Indoor unitHYDRO MODULE .................Hydro moduleCOMPRESSOR MODULE ....Compressor moduleOPTION.................................OptionFIELD WIRING ......................Field wiringPCB .......................................PCBWIRE COLOUR.....................Wire colourFIELD SUPPLY......................Field supplyPOWER SUPPLY ..................Power supply(OUTDOOR)..........................(Outdoor)(DISCHARGE).......................(Discharge)(CONDENSOR).....................(Condensor)ONLY FOR *** OPTION.........Only for *** option12.3. Overview of field wiringField wiring consists out of power supply (always including earth) andindoor-outdoor communication (=transmission) wiring.12.4. RequirementsThe power supply must be protected with the required safety devices,i.e. a main switch or other means for disconnections, a slow blowfuse on each phase and an earth leakage protector.Selection and sizing of the wiring should be done in accordance withrelevant local and national regulations based on the informationmentioned in the table below:Table: Selection and sizing of wiringTable: Power cable selection(1) European/International Technical Standard setting the limits for harmoniccurrents produced by equipment connected to public low-voltage systemswith input current >16 A and ≤75 A per phase.(2) European/International Technical Standard setting the limits for voltagechanges, voltage fluctuations and flicker in public low-voltage supplysystems for equipment with rated current ≤75 A.1 THIS WIRING DIAGRAM ONLY APPLIES TO THE OUTDOOR UNIT4 DO NOT OPERATE THE UNIT BY SHORT-CIRCUITING ANYPROTECTION DEVICENOTICEThe wiring diagram on the outdoor unit is only for theoutdoor unit.For the indoor unit or optional electrical components, referto the wiring diagram of the indoor unit.ItemCablebundle (a)(a) PS = Power supplyHV = High voltageLV = Low voltageDescriptionRequirednumber ofconductorsMaximum runningcurrent1 PS Power supply 2 + GND 18 A2 HV Indoor unit control signals 3 + GND Minimum cablesection 2.5 mm23 HV Indoor unit pump andheater control signals4 Minimum cablesection 0.75 mm24 LV Thermistor interconnectioncable (supplied with theoutdoor unit)8 Supplied with theoutdoor unitModel Nominal volatageMaximum runningcurrent Z maxEBHQ+EKCB(a) (b)(a) Equipment complying with EN/IEC 61000-3-12(1)(b) This equipment complies with EN/IEC 61000-3-11(2) provided that the systemimpedance Zsys is less than or equal to Zmax at the interface point between theuser's supply and the public system. It is the responsibility of the installer or userof the equipment to ensure, by consultation with the distribution network operatorif necessary, that the equipment is connected only to a supply with a systemimpedance Zsys less than or equal to Zmax .1x 203 V 18 A 0.42 Ω