Daikin RWEYQ8T9Y1B Installer And User Manual

Also see for RWEYQ10T9Y1B: Installation and operation manual Installer and user reference guide Installation and operation manual

1 General safety precautionsInstaller and user reference guide5RWEYQ8~14T9V1B + RWEYQ8~14T9Y1BVRV IV water-cooled system air conditioner4P452191-1 – 2017.041.3.2 Installation site▪ Provide sufficient space around the unit for servicing and aircirculation.▪ Make sure the installation site withstands the unit's weight andvibration.▪ Make sure the area is well ventilated. Do NOT block anyventilation openings.▪ Make sure the unit is level.Do NOT install the unit in the following places:▪ In potentially explosive atmospheres.▪ In places where there is machinery that emits electromagneticwaves. Electromagnetic waves may disturb the control system,and cause malfunction of the equipment.▪ In places where there is a risk of fire due to the leakage offlammable gases (example: thinner or gasoline), carbon fibre,ignitable dust.▪ In places where corrosive gas (example: sulphurous acid gas) isproduced. Corrosion of copper pipes or soldered parts may causethe refrigerant to leak.1.3.3 RefrigerantIf applicable. See the installation manual or installer reference guideof your application for more information.NOTICEMake sure refrigerant piping installation complies withapplicable legislation. In Europe, EN378 is the applicablestandard.NOTICEMake sure the field piping and connections are notsubjected to stress.WARNINGDuring tests, NEVER pressurize the product with apressure higher than the maximum allowable pressure (asindicated on the nameplate of the unit).WARNINGTake sufficient precautions in case of refrigerant leakage. Ifrefrigerant gas leaks, ventilate the area immediately.Possible risks:▪ Excessive refrigerant concentrations in a closed roomcan lead to oxygen deficiency.▪ Toxic gas may be produced if refrigerant gas comesinto contact with fire.DANGER: RISK OF EXPLOSIONPump down – Refrigerant leakage. If you want to pumpdown the system, and there is a leakage 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.