York TIWM006B21S Installation And Maintenance Manual

Also see for TIWM006B21S: Engineering manual

York TIWM006B21S Installation And Maintenance Manual Manual pdf 22 page image

18 P54170526. Refrigerant Piping WorkTable 6.1 Piping Size inch (mm)Model Gas Piping Liquid PipingTIWM006B21STIWM008B21STIWM012B21STIWM015B21S1/2 (12.7) 1/4 (6.35)TIWM018B21STIWM024B21STIWM030B21S5/8 (15.88) 3/8 (9.52)(3) Prepare field-supplied copper pipes.(4) Select clean copper pipes. Make sure there is no dust and moisture inside.(5) Make sure that moisture, old refrigerant, and other contaminants do not enter the refrigeration system.Impurities can adhere to the expansion valve and can impair system operation.(6) When cutting piping, do not use conventional tools such as saws or grinding wheel cutting disks thatproduce harmful metallic filings and burrs that can damage a refrigerant system. Use a copper tubecutter to eliminate metal filings produced by the cutting operation. After the cut is made, blow out eachpipe with dry compressed air or nitrogen to remove this residue before making pipe connections.6.1 Piping Materials(1) Tolerances of refrigerant piping lengths depend on the combination with the outdoor unit.Refer to the "Installation and Maintenance Manual" for the outdoor unit.(2) Select the piping size from the following table.For details of refrigerant piping work, vacuum pump and refrigerant charging, refer to the "Installation andMaintenance Manual" for the outdoor unit.Use the specified non-flammable refrigerant (HFC R410A) for the outdoor unit refrigerant cycle. Donot charge the unit with anything other than HFC R410A, such as hydrocarbon refrigerants (propaneand Isobutene), oxygen, and other flammable gases (acetylene, ammonia, and so forth), or anypoisonous gases when installing, maintaining and moving the unit. These substances are volatileand dangerous and can result in fire, explosion, and serious or fatal injuries.In Case of Getting the PipeThrough a Hole in the WallCorrect CorrectIncorrect IncorrectCorrect IncorrectHoleHoleAttach a cap or put a plastic bagover the pipe end.Attach a cap or put a plasticbag over the pipe end.Attach a cap or put a plasticbag over the pipe end.Rubber BandDo not lay the pipedirectly on the ground.Rain watercan come in.In Case of Rain