Daikin 4MXS80E3V3B2 Installation Manual

Contents

Daikin 4MXS80E3V3B2 Installation Manual Manual pdf 10 page image

Installation manual7Flaring the pipe end1 Cut the pipe end with a pipe cutter.2 Remove burrs with the cut surface facing downward so that thechips do not enter the pipe.3 Put the flare nut on the pipe.4 Flare the pipe.Set exactly at the position shown above.5 Check that the flaring is properly made.How to use reducersUse the reducers supplied with the unit as described below.Connecting a pipe of Ø12.7 to a gas pipe connection port for Ø15.9:Connecting a pipe of Ø9.5 to a gas pipe connection port for Ø15.9:Connecting a pipe of Ø9.5 to a gas pipe connection port for Ø12.7: When using the reducer packing shown above, be careful not toovertighten the nut, or the smaller pipe may be damaged.(Approx. 2/3 - 1x the normal torque) Apply a coat of refrigeration oil to the threaded connection portof the outdoor unit where the flare nut comes in. Use an appropriate torque wrench to avoid damaging theconnection thread by overtightening the flare nut.1 Cut exactly at right angles.2 Remove burrs.Flare tool for R410A Conventional flare toolClutch typeClutch type("Ridgid")Wing nut type("Imperial")A 0~0.5 mm 1.0~1.5 mm 1.5~2.0 mm1 Flare's inner surface must be flaw-free.2 The pipe end must be evenly flared in aperfect circle.3 Make sure that the flare nut is fitted.WARNING Do not use mineral oil on flared part. Prevent mineral oil from getting into the system as thiswould reduce the lifetime of the units. Never use piping which has been used for previousinstallations. Only use parts which are delivered withthe unit. Never install a drier to this R410A unit in order toguarantee its lifetime. The drying material maydissolve and damage the system. Incomplete flaring may cause refrigerant gas leakage.1 2A1 23No. 1 No. 2 No. 3 No. 4 No. 5 No. 6Ø15.9↓Ø12.7Ø12.7↓Ø9.5Ø15.9↓Ø12.7Ø12.7↓Ø9.5Ø15.9↓Ø9.5Ø15.9↓Ø9.5Gasket (1) Gasket (2) Reducer and gasket1 Inter-unit piping2 Flare nut (for Ø15.9)3 No. 34 No. 1Be sure to attach the gasket5 Connection port of outdoor unit1 Flare nut (for Ø9.5)2 No. 53 No. 6Be sure to attach the gasket1 Flare nut (for Ø12.7)2 No. 43 No. 2Be sure to attach the gasketFlare nut Flare nut tightening torqueØ9.5 32.7~39.9 N•m(333~407 kgf•cm)Ø12.7 49.5~60.3 N•m(505~615 kgf•cm)Ø15.9 61.8~75.4 N•m(630~769 kgf•cm)5 4 13 23 2 13 2 1