Daikin RZASG71M2V1B Installation Manual

Also see for AZAS100M7V1B: Installer's reference guide Installer's reference guide

Contents

Daikin RZASG71M2V1B Installation Manual Manual pdf 10 page image

4 InstallationInstallation manual10RZASG71~140M_V1+Y1Sky Air Advance-series4P485928-1 – 2017.04NOTICEDo not block the air vents. This could affect air circulationinside the unit.WARNINGProvide adequate measures to prevent that the unit can beused as a shelter by small animals. Small animals thatmake contact with electrical parts can cause malfunctions,smoke or fire.NOTICEMake sure to open the stop valves after installing therefrigerant piping and performing vacuum drying. Runningthe system with the stop valves closed may break thecompressor.4.3 Checking the refrigerant piping4.3.1 Checking refrigerant piping: Setupacfcfb d e hgiabABd eR32R32A Setup in case of pairB Setup in case of twina Pressure gaugeb Nitrogenc Refrigerantd Weighing machinee Vacuum pumpf Stop valveg Main pipingh Refrigerant branch kiti Branch piping4.3.2 To check for leaksNOTICEDo NOT exceed the unit's maximum working pressure (see"PS High" on the unit name plate).NOTICEMake sure to use a recommended bubble test solutionfrom your wholesaler. Do not use soap water, which maycause cracking of flare nuts (soap water may contain salt,which absorbs moisture that will freeze when the pipinggets cold), and/or lead to corrosion of flared joints (soapwater may contain ammonia which causes a corrosiveeffect between the brass flare nut and the copper flare).1 Charge the system with nitrogen gas up to a gauge pressure ofat least 200 kPa (2 bar). It is recommended to pressurize to3000 kPa (30 bar) in order to detect small leaks.2 Check for leaks by applying the bubble test solution to allconnections.3 Discharge all nitrogen gas.4.3.3 To perform vacuum dryingNOTICE▪ Connect the vacuum pump to both the service port ofthe gas stop valve and the service port of the liquidstop valve to increase efficiency.▪ Make sure that the gas stop valve and liquid stop valveare firmly closed before performing the leak test orvacuum drying.1 Vacuum the system until the pressure on the manifold indicates−0.1 MPa (−1 bar).2 Leave as is for 4-5 minutes and check the pressure:If the pressure… Then…Does not change There is no moisture in thesystem. This procedure isfinished.Increases There is moisture in thesystem. Go to the next step.3 Evacuate for at least 2 hours to a pressure on the manifold of−0.1 MPa (−1 bar).4 After turning OFF the pump, check the pressure for at least1 hour.5 If you do NOT reach the target vacuum or cannot maintain thevacuum for 1 hour, do the following:▪ Check for leaks again.▪ Perform vacuum drying again.NOTICEMake sure to open the stop valves after installing therefrigerant piping and performing vacuum drying. Runningthe system with the stop valves closed may break thecompressor.4.4 Charging refrigerant4.4.1 About charging refrigerantThe outdoor unit is factory charged with refrigerant, but in somecases the following might be necessary:What WhenCharging additional refrigerant When the total liquid pipinglength is more than specified(see later).Completely recharging refrigerant Example:▪ When relocating the system.▪ After a leak.