Daikin SkyAir RZAG35A2V1B Installer's Reference Manual

Also see for RZAG35A2V1B: Installation manual

6 InstallationInstaller reference guide14RZAG35~60A2V1BR32 split series4P540076-1A – 2018.11a bcda Torque wrenchb Spannerc Piping uniond Flare nutPiping size(mm)Tighteningtorque (N•m)Flaredimensions (A)(mm)Flare shape(mm)Ø6.4 15~17 8.7~9.1R=0.4~0.845°±290°±2AØ9.5 33~39 12.8~13.2Ø12.7 50~60 16.2~16.66.4.4 Pipe bending guidelinesUse a pipe bender for bending. All pipe bends should be as gentleas possible (bending radius should be 30~40 mm or larger).6.4.5 To flare the pipe endCAUTION▪ Incomplete flaring may cause refrigerant gas leakage.▪ Do NOT re-use flares. Use new flares to preventrefrigerant gas leakage.▪ Use flare nuts that are included with the unit. Usingdifferent flare nuts may cause refrigerant gas leakage.1 Cut the pipe end with a pipe cutter.2 Remove burrs with the cut surface facing down so that thechips do NOT enter the pipe.a ba Cut exactly at right angles.b Remove burrs.3 Remove the flare nut from the stop valve and put the flare nuton the pipe.4 Flare the pipe. Set exactly at the position as shown in thefollowing figure.AFlare tool for R32(clutch type)Conventional flare toolClutch type(Ridgid-type)Wing nut type(Imperial-type)A 0~0.5 mm 1.0~1.5 mm 1.5~2.0 mm5 Check that the flaring is properly made.a bca Flare’s inner surface MUST be flawless.b The pipe end MUST be evenly flared in a perfect circle.c Make sure the flare nut is fitted.6.4.6 Using the stop valve and service portCAUTIONDo NOT open the valves before flaring is complete. Thiswould cause refrigerant gas leakage.To handle the stop valveTake the following guidelines into account:▪ The stop valves are factory closed.▪ The following figure shows the stop valve parts required whenhandling the valve.cdaba Service port and service port capb Valve stemc Field piping connectiond Stem cap▪ Keep both stop valves open during operation.▪ Do NOT apply excessive force to the valve stem. Doing so maybreak the valve body.▪ ALWAYS make sure to secure the stop valve with a spanner, thenloosen or tighten the flare nut with a torque wrench. Do NOT placethe spanner on the stem cap, as this could cause a refrigerantleak.aba Spannerb Torque wrench▪ When it is expected that the operating pressure will be low (e.g.when cooling will be performed while the outside air temperatureis low), sufficiently seal the flare nut in the stop valve on the gasline with silicon sealant to prevent freezing.Silicon sealant; make sure there is no gap.To open/close the stop valve1 Remove the stop valve cover.2 Insert a hexagon wrench (liquid side: 4 mm, gas side: 4 mm)into the valve stem and turn the valve stem:Counterclockwise to open.Clockwise to close.3 When the stop valve CANNOT be turned any further, stopturning. The valve is now open/closed.