Daikin RYYQ8T7Y1B Installer And User Reference Manual

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Daikin RYYQ8T7Y1B Installer And User Reference Manual Manual pdf 22 page image

6 InstallationInstaller and user reference guide22RYYQ+RYMQ+RXYQ8~20T7Y1BVRV IV system air conditioner4P370475-1C – 2016.11NOTICEWhen closing the electrical component box cover, makesure that the sealing material on the lower back side of thecover is not caught and bend towards the inside.abcdea Electrical component box coverb Front sidec Power supply terminal blockd Sealing materiale Moisture and dirt could enterX Not allowedO Allowed6.3 Mounting the outdoor unit6.3.1 To provide the installation structureMake sure the unit is installed level on a sufficiently strong base toprevent vibration and noise.NOTICEWhen the installation height of the unit needs to beincreased, do not use stands to only support the corners.≥100 mm≥100 mm*X Not allowedO Allowed (* = preferred installation)▪ The height of the foundation must at least be 150 mm from thefloor. In heavy snowfall areas, this height should be increased,depending on the installation place and condition.▪ The preferred installation is on a solid longitudinal foundation(steel beam frame or concrete). The foundation must be largerthan the grey marked area.729≤613≥929≥ABAAa (mm)Minimum foundationa Anchor point (4×)HP AA AB8~12 766 99214~20 1076 1302▪ Fasten the unit in place using four foundation bolts M12. It is bestto screw in the foundation bolts until their length remains 20 mmabove the foundation surface.20 mmNOTICE▪ Prepare a water drainage channel around thefoundation to drain waste water from around the unit.During heating operation and when the outdoortemperatures are negative, the drained water from theoutdoor unit will freeze up. If the water drainage is nottaken care of, the area around the unit might be veryslippery.▪ When installed in a corrosive environment, use a nutwith plastic washer (a) to protect the nut tightening partfrom rust.a6.4 Connecting the refrigerant piping6.4.1 Precautions when connecting refrigerantpipingNOTICEMake 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.WARNINGAlways recover the refrigerant. Do NOT release themdirectly into the environment. Use a vacuum pump toevacuate the installation.Only use phosphoric acid deoxidised seamless copper.NOTICEAfter all the piping has been connected, make sure there isno gas leak. Use nitrogen to perform a gas leak detection.6.4.2 About connecting the refrigerant pipingBefore connecting the refrigerant piping, make sure the outdoor andindoor units are mounted.Connecting the refrigerant piping involves: