Ruud ANL-AZ 13 SEER Series, Installation Instructions Manual

9

INSTALLATION

Tools and Refrigerant

Tools Required for Installing 

and Servicing R-410A Models

Manifold Sets:
– Up to 800 PSIG High-Side
– Up to 250 PSIG Low-Side
– 550 PSIG Low-Side Retard
Manifold Hoses:
– Service Pressure Rating of 800 PSIG
Recovery Cylinders:
– 400 PSIG Pressure Rating
– Dept� of Transportation 4BA400 or BW400

CAUTION:

R-410A systems operate 

at higher pressures than R-22 systems� Do not 

use R-22 service equipment or components on 

R-410A equipment�

Specifications 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 heat pumps�

Physical Properties:

 R-410A has an atmospheric 

boiling point of -62.9°F [-52.7°C] and its saturation 

pressure at 77°F [25°C] is 224.5 psig.

Composition:

 R-410A is a near-azeotropic 

mixture of 50% by weight difluoromethane (HFC-

32) and 50% by weight pentafluoroethane (HFC-

125)�

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 must 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, a 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 performed 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 light rose in 

color�

•  R-410A, as with other HFCs, is only compatible 

with POE oils�

•  Vacuum pumps will not remove moisture from 

POE oil used in R-410A systems�

•  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 factory-approved biflow liquid line filter drier 

is shipped with every unit and must be installed 

in the liquid line at the time of installation� Only 

manufacturer-approved liquid line filter driers can 

be used� These are Sporlan (CW083S) and Alco 

(80K083S) driers� These filter driers are rated for 

minimum working pressure of 600 psig� The filter 

drier will only have adequate moisture-holding 

capacity if the system is properly evacuated�

•  Desiccant (drying agent) must be compatible for 

POE oils and R-410A refrigerant�

Ambient and Tube 

Thermometers

Manifold

Gauge

Set

Brazing

Rods

Torch

Nitrogen

Reclaimer

Recovery

Cylinders

Allen Wrench

Crescent Wrench

Tools