Daikin FFA50A2VEB9 Installer And User Reference Manual

1 General safety precautionsInstaller and user reference guide6FFA25~60A2VEB(9)Split system air conditioners4P550955-4 – 2018.08DANGER: RISK OF EXPLOSIONPump down – Refrigerant leakage. If you want to pumpdown the system, and there is a leak in the refrigerantcircuit:▪ Do NOT use the unit's automatic pump down function,with which you can collect all refrigerant from thesystem into the outdoor unit. Possible consequence:Self-combustion and explosion of the compressorbecause of air going into the operating compressor.▪ Use a separate recovery system so that the unit'scompressor does NOT have to operate.WARNINGALWAYS recover the refrigerant. Do NOT release themdirectly into the environment. Use a vacuum pump toevacuate the installation.NOTICEAfter all the piping has been connected, make sure there isno gas leak. Use nitrogen to perform a gas leak detection.NOTICE▪ To avoid compressor breakdown, do NOT charge morethan the specified amount of refrigerant.▪ When the refrigerant system is to be opened,refrigerant MUST be treated according to the applicablelegislation.WARNINGMake sure there is no oxygen in the system. Refrigerantmay only be charged after performing the leak test and thevacuum drying.▪ In case re-charge is required, refer to the nameplate of the unit. Itstates the type of refrigerant and necessary amount.▪ The unit is factory charged with refrigerant and depending on pipesizes and pipe lengths some systems require additional chargingof refrigerant.▪ Only use tools exclusively for the refrigerant type used in thesystem, this to ensure pressure resistance and prevent foreignmaterials from entering into the system.▪ Charge the liquid refrigerant as follows:If ThenA siphon tube is present(i.e., the cylinder is marked with"Liquid filling siphon attached")Charge with the cylinder upright.A siphon tube is NOT present Charge with the cylinder upsidedown.▪ Open refrigerant cylinders slowly.▪ Charge the refrigerant in liquid form. Adding it in gas form mayprevent normal operation.CAUTIONWhen the refrigerant charging procedure is done or whenpausing, close the valve of the refrigerant tankimmediately. If the valve is NOT closed immediately,remaining pressure might charge additional refrigerant.Possible consequence: Incorrect refrigerant amount.1.3.4 BrineIf applicable. See the installation manual or installer reference guideof your application for more information.WARNINGThe selection of the brine MUST be in accordance with theapplicable legislation.WARNINGTake sufficient precautions in case of brine leakage. Ifbrine leaks, ventilate the area immediately and contactyour local dealer.WARNINGThe ambient temperature inside the unit can get muchhigher than that of the room, e.g. 70°C. In case of a brineleak, hot parts inside the unit can create a hazardoussituation.WARNINGThe use and installation of the application MUST complywith the safety and environmental precautions specified inthe applicable legislation.1.3.5 WaterIf applicable. See the installation manual or installer reference guideof your application for more information.NOTICEMake sure water quality complies with EU directive98/83 EC.1.3.6 ElectricalDANGER: RISK OF ELECTROCUTION▪ Turn OFF all power supply before removing theswitch box cover, connecting electrical wiring ortouching electrical parts.▪ Disconnect the power supply for more than 1 minute,and measure the voltage at the terminals of main circuitcapacitors or electrical components before servicing.The voltage MUST be less than 50 V DC before youcan touch electrical components. For the location of theterminals, see the wiring diagram.▪ Do NOT touch electrical components with wet hands.▪ Do NOT leave the unit unattended when the servicecover is removed.WARNINGIf NOT factory installed, a main switch or other means fordisconnection, having a contact separation in all polesproviding full disconnection under overvoltage category IIIcondition, MUST be installed in the fixed wiring.