Panasonic U-36PE1U6 Technical Data & Service Manual

Also see for : S-26PU1U6: Installation instructions Quick guide Operating instructions Technical data & service manual Technical data & service manual

1-1201. SpecificationsDo not use a spanner to tighten the valve stem caps.Doing so may damage the valves.Depending on the installation conditions, applyingexcessive torque may cause the nuts to crack.Precautions for Packed Valve OperationIf the packed valve is left for a long time with the valvestem cap removed, refrigerant will leak from the valve.Therefore, do not leave the valve stem cap removed.Use a torque wrench to securely tighten the valve stemcap.Valve stem cap tightening torque:Charging port 70 – 85 in.lbs (80 – 100 kgf • cm)ø3/8" (Liquid side) 160 – 180 in.lbs (190 – 210 kgf • cm)ø5/8" (Gas side) 240 – 270 in.lbs (280 – 320 kgf • cm)3. Insulating the Refrigerant TubingTubing InsulationThermal insulation must be applied to all unit tubing,including the distribution joint (purchased separately).* For gas tubing, the insulation material must be heatresistant to 248°F or above. For other tubing, it must beheat resistant to 176°F or above.Insulation material thickness must be 13/32 in. or greater.CAUTIONIf the exterior of the outdoor unitvalves has been finished with asquare duct covering, make sureyou allow sufficient space toaccess the valves and to allowthe panels to be attached andremoved.Taping the flare nutsWind the white insulation tape around the fl are nuts at thegas tube connections. Then cover up the tubingconnections with the fl are insulator, and fi ll the gap at theunion with the supplied black insulation tape. Finally, fastenthe insulator at both ends with the supplied vinyl clamps.(Fig. 1-119)Insulation materialThe material used for insulation must have good insulationcharacteristics, be easy to use, be age resistant, and mustnot easily absorb moisture.CAUTIONAfter a tube has been insulated,never try to bend it into a narrowcurve because it can causethe tube to break or crack.Fig. 1-117Fig. 1-118Fig. 1-119Never grasp the drain or refrigerant connectingoutlets when moving the unit.Charging portValve stem capValve stemMain valvePacked valve2 tubes arranged togetherInter-unitcontrol wiringGas tubeLiquid tubeArmoring tapeInsulationUnit sideinsulatorInsulation tape (white)(supplied)Sealer (supplied)Flare insulator (supplied)Tube insulator(not supplied)Heat resistant248°F or aboveVinyl clamps (supplied)Flare nut1