Rheem R-410A Manual de usuario descargar pdf (Pagina 8)

SPECIFICATION OF R-410A:

Application: R-410A is not a drop-in replacement for R-22; equipment designs

must accommodate its higher pressures. It cannot be retrofitted into R-22 condens-

ing units.

Pressure: The pressure of R-410A is approximately 60% (1.6 times) greater

than R-22. Recovery and recycle equipment, pumps, hoses and the like need to

have design pressure ratings appropriate for R-410A. Manifold sets need to range

up to 800 psig high-side and 250 psig low-side with a 550 psig low-side retard.

Hoses need to have a service pressure rating of 800 psig. Recovery cylinders need

to have a 400 psig service pressure rating. DOT 4BA400 or DOT BW400.

Combustibility: At pressures above 1 atmosphere, mixture of R-410A and air can

become combustible. R-410A and air should never be mixed in tanks or supply

lines, or be allowed to accumulate in storage tanks. Leak checking should

never be done with a mixture of R-410A and air. Leak checking can be per-

formed safely with nitrogen or a mixture of R-410A and nitrogen.

QUICK REFERENCE GUIDE FOR R-410A

• R-410A refrigerant operates at approximately 60% higher pressure (1.6 times)

than R-22. Ensure that servicing equipment is designed to operate with R-410A.

• R-410A refrigerant cylinders are pink.

• R-410A, as with other HFC’s is only compatible with POE oils.

• Vacuum pumps will not remove moisture from POE oil.

• R-410A systems are to be charged with liquid refrigerants. Prior to March 1999,

R-410A refrigerant cylinders had a dip tube. These cylinders should be kept

upright for equipment charging. Post March 1999 cylinders do not have a dip

tube and should be inverted to ensure liquid charging of the equipment.

• Do not install a suction line filter drier in the liquid line.

• A liquid line filter drier is standard on every unit.

• Desiccant (drying agent) must be compatible for POE oils and R-410A.

EVAPORATOR COIL

REFER TO EVAPORATOR COIL MANUFACTURER’S INSTALLATION

INSTRUCTIONS.

IMPORTANT: The manufacturer is not responsible for the performance and opera-

tion of a mismatched system, or for a match listed with another manufacturer’s coil.

CAUTION

Only use evaporators rated and approved for use on (-)ARL and (-)ASL R-410A

systems.

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Rheem R-410A Manual de usuario Pagina 8