4 InstallationInstallation manual9RZASG71~140M_V1+Y1Sky Air Advance-series4P485928-1 – 2017.04ba b4× Ø6 mm2 Remove the burrs, and paint the edges and areas around theedges using repair paint to prevent rusting.4.1.4 To prevent the outdoor unit from fallingover1 Prepare 2 cables as indicated in the following illustration (fieldsupply).2 Place the 2 cables over the outdoor unit.3 Insert a rubber sheet between the cables and the outdoor unitto prevent the cable from scratching the paint (field supply).4 Attach the cable’s ends. Tighten those ends.4.2 Connecting the refrigerant pipingDANGER: RISK OF BURNING4.2.1 To connect the refrigerant piping to theoutdoor unit▪ Piping length. Keep field piping as short as possible.▪ Piping protection. Protect the field piping against physicaldamage.1 Do the following:▪ Remove the service cover (a) with screw (b).▪ Remove the piping intake plate (c) with screw (d).cabd2 Choose a piping route (a, b, c or d).abcd3 If you have chosen the downwards piping route:▪ Drill (a, 4×) and remove the knockout hole (b).▪ Cut out the slits (c) with a metal saw.ccba4× Ø6 mm4 Do the following:▪ Connect the liquid pipe (a) to the liquid stop valve.▪ Connect the gas pipe (b) to the gas stop valve.ab5 Do the following:▪ Insulate the liquid piping (a) and the gas piping (b).▪ Wind heat insulation around the curves, and then cover itwith vinyl tape (c).▪ Make sure the field piping does not touch any compressorcomponents (d).▪ Seal the insulation ends (sealant etc.) (e).defbac6 If the outdoor unit is installed above the indoor unit, cover thestop valves (f, see above) with sealing material to preventcondensed water on the stop valves from moving to the indoorunit.NOTICEAny exposed piping might cause condensation.7 Reattach the service cover and the piping intake plate.8 Seal all gaps (example: a) to prevent snow and small animalsfrom entering the system.a