Daikin RZQG71L9V1B Installer's Reference Manual

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Daikin RZQG71L9V1B Installer's Reference Manual Manual pdf 24 page image

7 CommissioningInstaller reference guide24RZQG71~140L_V1+Y1 + RZQSG100~140L_V1+Y1Split system air conditioners4P385522-1A – 2016.106.8.2 To close the outdoor unitNOTICEWhen closing the outdoor unit cover, make sure that thetightening torque does NOT exceed 4.1 N•m.1×216.8.3 To check the insulation resistance of thecompressorNOTICEIf, after installation, refrigerant accumulates in thecompressor, the insulation resistance over the poles candrop, but if it is at least 1 MΩ, then the unit will not breakdown.▪ Use a 500 V mega-tester when measuring insulation.▪ Do not use a mega-tester for low-voltage circuits.1 Measure the insulation resistance over the poles.If Then≥1 MΩ Insulation resistance is OK. This procedureis finished.<1 MΩ Insulation resistance is not OK. Go to thenext step.2 Turn ON the power and leave it on for 6 hours.Result: The compressor will heat up and evaporate anyrefrigerant in the compressor.3 Measure the insulation resistance again.7 Commissioning7.1 Overview: CommissioningThis chapter describes what you have to do and know tocommission the system after it is installed.Typical workflowCommissioning typically consists of the following stages:1 Checking the "Checklist before commissioning".2 Performing a test run for the system.7.2 Precautions when commissioningINFORMATIONDuring the first running period of the unit, the requiredpower may be higher than stated on the nameplate of theunit. This phenomenon is caused by the compressor, thatneeds a continuous run time of 50 hours before reachingsmooth operation and stable power consumption.NOTICEBefore starting up the system, the unit MUST be energisedfor at least 6 hours. The crankcase heater needs to heatup the compressor oil to avoid oil shortage andcompressor breakdown during startup.NOTICENEVER operate the unit without thermistors and/orpressure sensors/switches. Burning of the compressormight result.NOTICEDo NOT operate the unit until the refrigerant piping iscomplete (when operated this way, the compressor willbreak).NOTICECooling operation mode. Perform the test run in coolingoperation mode so that stop valves failing to open can bedetected. Even if the user interface was set to heatingoperation mode, the unit will run in cooling operation modeduring 2‑3 minutes (although the user interface will displaythe heating icon), and then automatically switch to heatingoperation mode.NOTICEIf you cannot operate the unit in test run, see "7.5 Errorcodes when performing a test run" on page 25.WARNINGIf the panels on the indoor units are not installed yet, makesure to power OFF the system after finishing the test run.To do so, turn OFF operation via the user interface. DoNOT stop operation by turning OFF the circuit breakers.7.3 Checklist before commissioningDo NOT operate the system before the following checks are OK:You read the complete installation instructions, asdescribed in the installer reference guide.The indoor units are properly mounted.In case a wireless user interface is used: The indoor unitdecoration panel with infrared receiver is installed.The outdoor unit is properly mounted.The following field wiring has been carried out accordingto this document and the applicable legislation:▪ Between the local supply panel and the outdoor unit▪ Between the outdoor unit and the indoor unit (master)▪ Between the indoor unitsThere are NO missing phases or reversed phases.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.The insulation resistance of the compressor is OK.