Panasonic U-8ME1E8 Installation Instructions Manual

Also see for U-10ME1E8: Instruction manual Service manual Operating instructions Installation instructions

Contents

Panasonic U-8ME1E8 Installation Instructions Manual Manual pdf 25 page image

243-4. Prepare the Tubing● Material: Use C1220 phosphorous deoxidized copperas described in JIS H3300, “Copper and Copper AlloySeamless Pipes and Tubes.” (For tubes that are ø22.22 orlarger, use 1/2H material or H material. For all others use Omaterial.)● Tubing sizeUse the tubing size indicated in the table below.● When cutting the tubing, use a tube cutter, and be sure toremove any burrs.(The same applies to distribution tubing (optional).)● When bending the tubes, bend each tube using a radiusthat is at least 4 times the outer diameter of the tube. Whenbending, use sufficient care to avoid crushing or damagingthe tube.● For flaring, use a flare tool, and be sure that flaring isperformed correctly.CAUTIONUse sufficient caution during preparation of the tubing.Seal the tube ends by means of caps or taping to preventdust, moisture, or other foreign substances from enteringthe tubes.Refrigerant tubingTubing size (mm)Outer dia. Thickness Outer dia. Thicknessø6.35 t0.8 ø22.22 t1.0ø9.52 t0.8 ø25.4 t1.0ø12.7 t0.8 ø28.58 t1.0ø15.88 t1.0 ø31.75 t1.1ø19.05 t1.2 ø38.1 over t1.35ø41.28 over t1.453-5. Connect the Tubing● When operating the refrigerant tube installation in thefield, do not apply the flame of welding to the surroundingsheet-metal parts. If necessary, use a wet rag to preventoverheating of the heat exchanger.● If you have difficulty installing the refrigerant tube, you mayremove the fixing bracket.Since this bracket is only used for transportation, it is notnecessary to reinstall in its original position. If not used fortransportation, dispose of the bracket in a proper way.● Except for the 16hp model, do not use the suppliedconnector tubing. (See figure below.)Model : 8hp, 10hp, 12hp, 14hp, 18hp, 20hp (Except 16hp)123RefrigeranttubingConnectionmethodSuppliedparts used?1 Gas tubing Brazing No2 Liquid tubing Flare connection No3 Balance tube Flare connection NoModel : 16hp3 12 RefrigeranttubingConnectionmethodSuppliedparts used?1 Gas tubing Brazing yes(ø25.4 ø28.58)2 Liquid tubing Flare connection No3 Balance tube Flare connection NoRefrigerant tube port● Use caulking, putty, or a similar material to fill any gaps atthe refrigerant tube port ( ) in order to prevent rainwater,dust or foreign substances from entering the unit.* Perform this work even if the tubing is routed out in adownward direction.RemovableTubingcoverBottomplateTubing routed outthrough the front sideTubing routed outthrough the bottom