5 CommissioningInstallation manual11RXF50+60B2_RXF71A2_RXP50~71L2_(A)RXM42~71N2_RXJ50N2_RXA42+50B2R32 split series3P512025-5E – 2018.052 Open the wire clamp.3 Connect the interconnection cable and power supply as follows:50 Hz220-240 Vc dfa b ea Interconnection cableb Power supply cablec Field fused Earth leakage circuit breakere Power supplyf Earth1 2 33×4 Tighten the terminal screws securely. We recommend using aPhillips screwdriver.5 Install the switch box cover.4.6 Finishing the outdoor unitinstallation4.6.1 To finish the outdoor unit installationDANGER: RISK OF ELECTROCUTION▪ Make sure that the system is earthed properly.▪ Turn off the power supply before servicing.▪ Install the switch box cover before turning on the powersupply.1 Insulate and fix the refrigerant piping and interconnection cableas follows:fbaedca Gas pipeb Gas pipe insulationc Interconnection cabled Liquid pipee Liquid pipe insulationf Finishing tape2 Install the service cover.5 CommissioningNOTICENEVER operate the unit without thermistors and/orpressure sensors/switches. Burning of the compressormight result.5.1 Checklist before commissioningAfter the installation of the unit, first check the following items. Onceall below checks are fulfilled, the unit MUST be closed, ONLY thencan the unit be powered up.The indoor unit is properly mounted.The outdoor unit is properly mounted.The system is properly earthed and the earth terminalsare tightened.The fuses or locally installed protection devices areinstalled according to this document, and have NOT beenbypassed.The power supply voltage matches the voltage on theidentification label of the unit.There are NO loose connections or damaged electricalcomponents in the switch box.There are NO damaged components or squeezedpipes on the inside of the indoor and outdoor units.There are NO refrigerant leaks.The refrigerant pipes (gas and liquid) are thermallyinsulated.The correct pipe size is installed and the pipes areproperly insulated.The stop valves (gas and liquid) on the outdoor unit arefully open.The following field wiring has been carried out accordingto this document and the applicable legislation betweenthe outdoor unit and the indoor unit.DrainageMake sure drainage flows smoothly.Possible consequence: Condensate water might drip.The indoor unit receives the signals of the user interface.The specified wires are used for the interconnectioncable.5.2 Checklist during commissioningTo perform an air purge.To perform a test run.5.3 To perform a test runPrerequisite: Power supply MUST be in the specified range.Prerequisite: Test run may be performed in cooling or heatingmode.Prerequisite: Test run should be performed in accordance with theoperation manual of the indoor unit to make sure that all functionsand parts are working properly.1 In cooling mode, select the lowest programmable temperature.In heating mode, select the highest programmable temperature.Test run can be disabled if necessary.2 When the test run is finished, set the temperature to a normallevel. In cooling mode: 26~28°C, in heating mode: 20~24°C.3 The system stops operating 3 minutes after the unit is turnedOFF.