Daikin RYYQ8T7Y1B Installer And User Reference Manual

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Daikin RYYQ8T7Y1B Installer And User Reference Manual Manual pdf 23 page image

6 InstallationInstaller and user reference guide23RYYQ+RYMQ+RXYQ8~20T7Y1BVRV IV system air conditioner4P370475-1C – 2016.11▪ 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 front connection orside connection (when taken out from the bottom) as shown in thefigure below.a bca Left-side connectionb Front connectionc Right-side connectionFor side connections, the knockout hole on the bottom plate shouldbe removed:cbaa Large knockout holeb Drillc Points for drillingNOTICEPrecautions when making knockout holes:▪ Avoid damaging the casing.▪ After making the knockout holes, we recommend youremove the burrs and paint the edges and areasaround the edges using repair paint to prevent rusting.▪ When passing electrical wiring through the knockoutholes, wrap the wiring with protective tape to preventdamage.6.4.4 To connect the refrigerant piping to theoutdoor unitINFORMATIONAll local inter unit piping are field supplied except theaccessory pipes.NOTICEPrecautions when connecting field piping. Add brazingmaterial as shown in the figure.1 1112 2≤Ø25.4 >Ø25.4NOTICE▪ Be sure to use the supplied accessory pipes whencarrying out piping work in the field.▪ Be sure that the field installed piping does not touchother pipes, the bottom panel or side panel. Especiallyfor the bottom and side connection, be sure to protectthe piping with suitable insulation, to prevent it fromcoming into contact with the casing.Connection from the stop valves to the field piping can be done byusing accessory pipes supplied as accessory.The connections to the branch kits are the responsibility of theinstaller (field piping).6.4.5 To connect the multi connection piping kitNOTICEImproper installation may lead to malfunction of theoutdoor unit.▪ Install the joints horizontally, so that the caution label (a) attachedto the joint comes to the top.▪ Do not tilt the joint more than 7.5° (see view A).▪ Do not install the joint vertically (see view B).a aA B7.5°7.5°a Caution labelX Not allowedO Allowed▪ Make sure that the total length of the piping connected to the jointis absolute straight for more than 500 mm. Only if a straight fieldpiping of more than 120 mm is connected, more than 500 mm ofstraight section can be ensured.>120 mm>500 mm