Daikin RYYQ8T7Y1B Installation And Operation Manual

Also see for RXYQ10T7Y1B: Installer and user reference guide Installation and operation manual

Contents

Daikin RYYQ8T7Y1B Installation And Operation Manual Manual pdf 49 page image

RYYQ+RYMQ+RXYQ8~20T7Y1BVRV IV System Air Conditioner4P329765-1 – 2012.09Installation and operation manual4415.5. Test operationAfter installation and once the field settings are defined, the installeris obliged to verify correct operation. Therefore a test run must beperformed according to the procedures described below.15.5.1. Precautions before starting test operationDuring test operation, the outdoor unit and the indoor units will startup: Make sure that the preparations of all indoor units are finished(field piping, electrical wiring, air purge, ...). See installationmanual of the indoor units for details. Provide a logbook and machine card.In accordance with the applicable legislation, it may benecessary to provide a logbook with the equipment containing atleast: info on maintenance, repair work, results of tests, stand-byperiods, …15.5.2. Test operationThe procedure below describes the test operation of the completesystem. This operation checks and judges following items: Check of wrong wiring (communication check with indoor units). Check of the stop valves opening. Judgement of piping length. Gathering reference data for leak detection functionality.If the leak detection functionality is required, the test run needsto be executed including a detailed refrigerant situation check. Ifthe leak detection functionality is NOT required, the test run canskip the detailed refrigerant situation check. This can be definedby setting [2-88].- [2-88]=0, the test run will be executed including the detailedrefrigerant situation check. After the test run, the unit will beprepared for leak detection functionality (for more details, see"15.3. Leak detection function" on page 42).- [2-88]=1, the test run will be executed without the detailedrefrigerant situation check. After the test run, the unit willNOT be prepared for leak detection functionality.In case Hydrobox units or RA DX indoor units are present in thesystem, above 2 checks will not be performed.On top of this system test operation, indoor units operation shouldalso be checked separately. Make sure to carry out the system test operation after the firstinstallation. Otherwise, the malfunction code U3 will be displayedon the user interface and normal operation or individual indoorunit test run cannot be carried out. Abnormalities on indoor units cannot be checked for each unitseparately. After the test operation is finished, check the indoorunits one by one by performing a normal operation using theuser interface. Refer to the indoor unit installation manual formore details (e.g., Hydrobox) concerning the individual test run.Procedure1 Close all front panels in order to not let it be the cause ofmisjudgement (except the electrical component box inspectionopening service cover).2 Make sure all field settings you want are set; see"15.2. Monitoring function and field settings" on page 38.3 Turn ON the power to the outdoor unit and the connected indoorunits.CAUTIONDo not insert fingers, rods or other objects into the air inletor outlet. When the fan is rotating at high speed, it willcause injury.CAUTIONDo not perform the test operation while working on theindoor units.When performing the test operation, not only the outdoorunit, but the connected indoor unit will operate as well.Working on an indoor unit while performing a test operationis dangerous.CAUTION During tests never pressurize the appliances with apressure higher than the maximum allowablepressure (as indicated on the nameplate of the unit). If refrigerant gas leaks, ventilate the area immediately.Toxic gas may be produced if refrigerant gas comesinto contact with fire. Never directly touch any accidental leakingrefrigerant. This could result in severe wounds causedby frostbite. Test run is possible for ambient temperatures between–20°C and 35°C.DANGER: Do not touch piping and internal parts.See "2. General safety precautions" on page 2.DANGER: Electrical shockSee "2. General safety precautions" on page 2.INFORMATIONNote that during the first running period of the unit,required power input may be higher. This phenomenonoriginates from the compressor that requires a 50 hour runelapse before reaching smooth operation and stable powerconsumption. Reason is that the scroll is made out of ironand that it takes some time to smooth the surfaces thatmake contact.NOTICETo protect the compressor, be sure to turn on the powersupply 6 hours before starting operation.INFORMATION When [2-88]=0, the test operation time can take up to4 hours. When [2-88]=0 and the test operation was abortedbefore the end, the U3 warning code will be visible onthe user interface. It is possible to operate the system.Leak detection function will NOT be available. It isadvised to re-execute the test operation. If the autocharge function was used, the unit informsthe user in case unfavourable ambient conditions arepresent to gather detailed refrigerant situation data.When this is the case, the accuracy of leak detectionoperation will drop. It is advised in such a case toperform the test operation again on another morefavourable moment. In case no "E-2" or "E-3"information was displayed during the autochargingprocedure, it is possible to have reliable datagathering during the test operation. See ambientlimitations in the information table on page 36.INFORMATION It may take 10 minutes to achieve a uniformrefrigerant state before the compressor starts. During the test operation, the refrigerant runningsound or the magnetic sound of a solenoid valve maybecome loud and the display indication may change.These are not malfunctions.