Carrier AQUASnap 30RB Installation, Operation & Maintenance Instructions Manual

Also see for AQUASnap 30RB: Manual Operation and maintenance instructions Installation instructions Installation, operation and maintenance instructions Controls and Troubleshooting

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Carrier AQUASnap 30RB Installation, Operation & Maintenance Instructions Manual Manual pdf 22 page image

22EnglishIMPORTANT: Make earth connection prior to any otherelectrical connections.Earthing is required by law. The installer must earth theunit using the terminal marked with the internationalearthing symbol.Before connecting the supply cable to the line, locate line(L), lines (L1-L2-L3) and neutral N. Then makeconnections, as indicated in the wiring diagram.If the electrical supply cables L1 (R), L2 (S), L3 (T) areconnected in an incorrect sequence, the power supply isinterrupted after a few seconds by the control, which goesinto alarm status preventing the incorrect compressorrotation.10 - auxIlIary acceSSorIeS connecTIon10.1 - external water circulator for 30rB___X9 unit(fig. 16)Units without an integrated pump allow driving anexternal one.The signal (24V, 2 A maximum) is supplied at channelCH22 of the terminal block (see wiring diagram).10.2 - start-upUnit start-up is done by the electronic control describedabove, and must always be carried out under thesupervision of a qualified air conditioning engineer.Necessary checks/precautions before start-up• Ensure that all electrical connections are properlytightened.• Ensure that the unit is level and well-supported.• Check that the hydraulic circuit has sufficient waterlow and that the pipe connections correspond to theinstallation diagram.• Ensure that there are no water losses. Check thecorrect operation of the valves installed.• All panels should be fitted and firmly secured with thecorresponding screws.• Make sure that there is sufficient space for servicingand maintenance purposes.• Ensure that there are no refrigerant leaks.• Confirm that the electrical power source agrees withthe unit • nameplate rating, wiring diagram and otherdocumentation for the unit.• Ensure that the power supply corresponds to theapplicable standards.• Make sure that compressor float freely on themounting springs.10.3 - unit circuit diagram (fig. 17)Legend fig. 17.11 - MaInTenance11.1 - refrigerant charge checkThis check becomes necessary after any refrigerant leak orafter replacement of the compressor.The best method to correctly charge refrigerant is tocompletely empty the refrigerant circuit using refrigerantrecovery equipment.Then charge the exact quantity of refrigerant according tothe data shown on the unit nameplate.R-410A systems must be charged with liquid refrigerant.Use the special recharging equipment (normally on themarket) to control the refrigerant correctly.11.2 - Cleaning the coilIf necessary, proceed as follows for more careful cleaningof the coil:Switch the mains supply OFF.12 30RB6OJUDJSDVJUEJBHSBN 'JH5IJTDIFDLCFDPNFTOFDFTTBSZBGUFSBOZSFGSJHFSBOUMFBLPSafter replacement of the compressor.The best method to correctly charge refrigerant is tocompletely empty the refrigerant circuit using refrigerantrecovery equipment.Then charge the exact quantity of refrigerant according toLegend - Fig. 171. High pressure transducer2. High pressure switch (when installed)3. Low pressure transducer 1SFTTVSFTFSWJDFQPSU5. TEV valve $SBOLDBTFIFBUFS7. Suction accumulator8. Water inlet9. Chilled water outletRefrigerant R-410AGas-JRVJE (BTLiquidthe data shown on the unit nameplate.R-410A systems must be charged with liquid refrigeranUse the special recharging equipment (normally on thNBSLFU UPDPOUSPMUIFSFGSJHFSBOUDPSSFDUMZ3FNPWFVOJUUPQDPWFSCZMPPTFOJOHUIFöYJOHTDSFXTlifting the cover. Carefully clean the coil with a vacuumcleaner from inside to outside. With the same vacuumcleaner, remove the dust from inside the fan compartmand the fan blades. Avoid any damage to the blades wmay cause future vibrations and noise.Replace the unit cover and tighten the screws.If necessary, proceed as follows formore careful cleaning of the coil:Switch the mains supply OFF.IMPORTANTThe operation must be performed byRVBMJöFEQFSTPOOFMCleaning the coil3FGSJHFSBOUDIBSHFDIFDLMaintenance$POUSPMBOETBGFUZEFWJDFT $PNQSFTTPSBOEGBONPUPSXJOEJOHQSPUFDUJPOAutomatic reset.This is activated when the temperature of the winding orthe the compressor power input exceed the set limits. 'SFF[FVQQSPUFDUJPO 5IJTQSPUFDUJPOEFWJDFJTDPOUSPMMFECZUIF1SP%JBMPH+VOJPSDPOUSPMVTJOHUIFXBUFSIFBUFYDIBOHFSMFBWJOHtemperature.This safety device interrupts unit operation and showsan alarm code on the display. $PPMJOHDPOUSPMTFUQPJOUThis parameter is regulated by the control andfactory set to an leaving water temperature of 7°C.The second set point default value is 12°C and it can beselected via the Service Interface. )JHIQSFTTVSFTXJUDI)*1Installed and set according to technical data tableon the discharge piping with manual reset. On unitXJUIPVU)*1IJHIQSFTTVSFQSPUFDUJPOJTBTTVSFECZcompressor overload switch. -PXTVDUJPOUFNQFSBUVSFQSPUFDUJPOAutomatic/manual reset (after 6 automatic cycles)based on the pressure transducer signal installed oncompressor suction lines. )JHIQSFTTVSFQSPUFDUJPOAutomatic/manual reset (after 6 automatic cycles)based on the pressure transducer signal installed oncompressor discharge lines. 'BOTQFFEDPOUSPMMFSChanges the fan speed according to the condensUFNQFSBUVSF*TDPOUSPMMFECZUIF1SP%JBMPHDPOUBOEQFSNJUTVOJUPQFSBUJPOVQUPUIFTQFDJöFEtemperature limits, optimising the condensingtemperature.t Anti-short-cycle protection.t Fault detector for the temperature and pressuresensors.EnglishIMPORTANT: The operation must be performed byqualified personnel.Remove unit top cover by loosening the fixing screws andlifting the cover. Carefully clean the coil with a vacuumcleaner from inside to outside. With the same vacuumcleaner, remove the dust from inside the fan compartmentand the fan blades. Avoid any damage to the blades whichmay cause future vibrations and noise.Replace the unit cover and tighten the screws.11.3 - control and safety devices1. Compressor and fan motor winding protectionAutomatic reset.This is activated when the temperature of the winding orthe the compressor power input exceed the set limits.2. Freeze-up protectionThis protection device is controlled by the Pro-DialogJunior control using the water heat exchanger leavingtemperature.This safety device interrupts unit operation and shows analarm code on the display.3. Cooling control setpointThis parameter is regulated by the control and factory setto an leaving water temperature of 7°C. The second setpoint default value is 12°C and it can be selected via theService Interface.