Installation guide

PURON@ (R-4t0A) QUICK REFERENCE GULDE

• Puron® refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment and

replacement components are designed to operate with Puron®.

• Puron® refrigerant cylinders are rose colored.

• Recovery cylinder service pressure rating must be 400 psig. DOT 4BA400 or DOT BW400.

• Puron® systems should be charged with liquid refrigerant. Use a commercial type metering device in the

manifold hose when charging into suction line with compressor operating.

• Manifold sets should be at least 700 psig high side and 180 psig low side with 550 psig low-side retard.

• Use hoses with 700 psig service pressure rating.

• Leak detectors should be designed to detect HFC refrigerant.

• Puron®, as with other HFCs, is onty compatible with POE oils.

• Vacuum pumps will not remove moisture from oil.

• Do not teave Puron® suction line filter driers in line longer than 72 hrs.

• Do not use liquid-line filter driers with rated working pressures less than 600 psig.

• Do not install a suction-line filter drier in tiquid line.

• POE oiis absorb moisture rapidty. 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 factory-approved liquid-line filter drier is required on every unit.

• Do not use an R-22 TXV.

• If indoor unit is equipped with an R-22 TXV, it must be changed to a Puron® TXV.

• Never open system to atmosphere while it is under a vacuum.

• When system must be opened for service, recover refrigerant, break vacuum with dry nitrogen prior to

opening to atmosphere. Evacuate to 500 microns prior to recharging.

• Atways replace filter drier after opening system for service.

• Do not vent Puron® into the atmosphere.

• Do not use capillary tube coils.

• Observe alt warnings, cautions, and bold text.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obJigations.

Book 1 4

Tab 3a 2a PC 101 Catalog No 533-80079 PrJl3tedin U.S.A. Form 38ESG-1SI Pg 12 1%02 Replaces: New