ICP CSA6 Installation Instructions Manual

Contents

INSTALLATION INSTRUCTIONS R−410A Split System Air Conditioner421 01 5104 02 15Specifications subject to change without notice.R−410A QUICK REFERENCE GUIDE• R−410A refrigerant operates at 50% − 70% higher pressures than R−22. Be sure that servicing equipment andreplacement components are designed to operate with R−410A.• R−410A refrigerant cylinders are rose colored.• Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.• R−410A systems should be charged with liquid refrigerant. Use a commercial type metering device in themanifold hose.• Manifold sets should be 750 psig high−side and 200 psig low−side with 520 psig low−side retard.• Use hoses with 750 psig service pressure rating.• Leak detectors should be designed to detect HFC refrigerant.• R−410A, as with other HFC refrigerants, is only compatible with POE oils.• Vacuum pumps will not remove moisture from oil.• Do not use liquid line filter−driers with rated working pressures less than 600 psig.• Do not install a suction line filter−drier in liquid line.• POE oils absorb moisture rapidly. Do not expose oil to atmosphere.• POE oils may cause damage to certain plastics and roofing materials.• Wrap all filter−driers and service valves with wet cloth when brazing.• A liquid line filter−drier is required on every unit.• Do not use with an R−22 TXV.• If indoor unit is equipped with an R−22 TXV, it must be changed to an R−410A TXV.• Never open system to atmosphere while it is under a vacuum.• When system must be opened for service, break vacuum with dry nitrogen and replace all filter−driers.• Do not vent R−410A into the atmosphere.• Do not use capillary tube indoor coils.• Observe all WARNINGS, CAUTIONS, NOTES, and bold text.Copyright 2013 International Comfort ProductsLewisburg, TN 37091 USA

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