Daikin FDXM25F3V1B Installer's Reference Manual

Also see for FDXM25F3V1B: Installer's reference guide Operation manual

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Daikin FDXM25F3V1B Installer's Reference Manual Manual pdf 8 page image

5 PreparationInstaller reference guide8FDXM25~60F3V1BSplit system air conditioners4P482333-1 – 2017.03WARNINGDo NOT install the air conditioner at any place whereflammable gas may leak out. If the gas leaks out and staysaround the air conditioner, a fire may break out.5.2.1 Installation site requirements of theindoor unitINFORMATIONAlso read the following requirements:▪ General installation site requirements. See the"General safety precautions" chapter.▪ Refrigerant piping requirements (length, heightdifference). See further in this "Preparation" chapter.INFORMATIONThe sound pressure level is less than 70 dBA.NOTICEThe equipment described in this manual may causeelectronic noise generated from radio-frequency energy.The equipment complies to specifications that aredesigned to provide reasonable protection against suchinterference. However, there is no guarantee thatinterference will not occur in a particular installation.It is therefore recommended to install the equipment andelectric wires keeping proper distances away from stereoequipment, personal computers, etc.Install power cables at least 1 metre away from televisions or radiosto prevent interference. Depending on the radio waves, a distance of1 metre may not be sufficient.▪ Fluorescent lights. When installing a wireless user interface in aroom with fluorescent lights, mind the following to avoidinterference:▪ Install the wireless user interface as close as possible to theindoor unit.▪ Install the indoor unit as far as possible from the fluorescentlights.▪ Signal receiver with built-in temperature sensor must beinstalled on a location:▪ near the intake vent (when installation near the intake vent isnot possible, install 1.5 m above the floor)▪ which is not exposed to cold or hot air.▪ where signal may not be blocked by curtain, etc.▪ Take care that in the event of a water leak, water cannot causeany damage to the installation space and surroundings.▪ Choose a location where the hot/cold air discharged from the unitor the operation noise, will NOT disturb anyone.WARNINGDo NOT place objects below the indoor and/or outdoor unitthat may get wet. In this condition, condensation on themain unit or refrigerant pipes, air filter dirt or drain blockagemay cause dripping. This results in fouling or failure of theobject which is located beneath the unit.▪ Air flow. Make sure nothing blocks the air flow.▪ Drainage. Make sure condensation water can be evacuatedproperly.▪ Ceiling insulation. When conditions in the ceiling exceed 30°Cand a relative humidity of 80%, or when fresh air is inducted intothe ceiling, then additional insulation is required (minimum 10 mmthickness, polyethylene foam).▪ Protective guards. Make sure to install protective guards on thesuction and discharge side to prevent somebody from touchingthe fan blades or heat exchanger.Do NOT install the unit in the following places:▪ In places where a mineral oil mist, spray or vapour may bepresent in the atmosphere. Plastic parts may deteriorate and falloff or cause water leakage.It is NOT recommended to install the unit in the following placesbecause it may shorten the life of the unit:▪ Where the voltage fluctuates a lot▪ In vehicles or vessels▪ Where acidic or alkaline vapour is present▪ Use suspension bolts for installation.▪ Spacing. Mind the following requirements:200e: ≥240A≥20≥300bcda(mm)≥400A Minimum distance to the floor:2.7 m to avoid accidental touching.2.5 m in case the fan is covered (e.g. false ceiling, grille,…)a Control boxb Maintenance spacec Ceilingd Floor surfacee Select the dimension to ensure downward slope of at least1/1005.3 Preparing refrigerant piping5.3.1 Refrigerant piping requirementsINFORMATIONAlso read the precautions and requirements in the"General safety precautions" chapter.Refrigerant piping material▪ Piping material: Phosphoric acid deoxidised seamless copper.▪ Piping temper grade and thickness:Outer diameter(Ø)Temper grade Thickness (t)(a)6.4 mm (1/4") Annealed (O) ≥0.8 mmtØ9.5 mm (3/8")12.7 mm (1/2")(a) Depending on the applicable legislation and the unit'smaximum working pressure (see "PS High" on the unitname plate), larger piping thickness might be required.Refrigerant piping diameterUse the same diameters as the connections on the outdoor units: