Daikin RWEYQ8T9Y1B Installer And User Manual

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

6 InstallationInstaller and user reference guide23RWEYQ8~14T9V1B + RWEYQ8~14T9Y1BVRV IV water-cooled system air conditioner4P452191-1 – 2017.04NOTICEWhen the installation height of the unit needs to beincreased, do not use stands to only support the corners.▪ The preferred installation is on a solid longitudinal foundation(steel beam frame or concrete). The foundation must be largerthan the grey marked area.800 mm600 mm516 mm480 mm660 mmaMinimum foundationa Anchor point (4×)▪ 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 mm6.4 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.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:▪ Routing and connecting the refrigerant piping to the outdoor unit▪ Protecting the outdoor unit against contamination▪ Connecting the refrigerant piping to the indoor units (see theinstallation manual of the indoor units)▪ Connecting the multi-connection piping kit▪ Connecting the refrigerant branching kit▪ Keeping in mind the guidelines for:▪ Brazing▪ Using the stop valves▪ Removing the pinched pipes6.4.3 To route the refrigerant pipingInstallation of refrigerant piping is possible as top connection(standard) or front connection.In case of top connection:aIn case of front connection:Remove and change the position of the pipe service plate (a) asshown in figure below.a6.4.4 To connect the refrigerant piping to theoutdoor unitINFORMATIONAll local inter unit piping are field supplied except theaccessory pipes.