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•
Puron (R-410A) refrigerant operates at 50 percent to
70 percent higher pressures than R-22. Be sure that servic-
ing equipment and replacement components are designed
to operate with Puron refrigerant.
•
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 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 refrigerant, as with other HFCs, is only compatible
with POE oils.
•
Vacuum pumps will not remove moisture from oil.
•
Use only factory specified liquid-line filter driers with
rated working pressures greater 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.
UNIT
575J*07G/H
575J*08M/N
575J*12G/H
APPENDIX A — AIR CONDITIONER AND
HEAT PUMP WITH PURON
QUICK REFERENCE GUIDE
APPENDIX B — WIRING DIAGRAM LIST
COOLING
STAGES
CHARACTERISTICS
2
2
2
®
—
•
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 a TXV, it must be changed
to a Puron refrigerant TXV.
•
Never open system to atmosphere while it is under a
vacuum.
•
When system must be opened for service, recover refriger-
ant, break vacuum with dry nitrogen before opening
system.
•
Always replace filter drier after opening system for
service.
•
Do not vent Puron refrigerant into the atmosphere.
•
Do not use capillary tube coils.
•
Observe all warnings, cautions, and bold text.
•
All Puron refrigerant heat pumps must have indoor TXV.
•
Do not leave Puron refrigerant suction line driers in place
for more than 72 hours.
ELECTRICAL
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
37
DIAGRAM
PAGE
NUMBER
NUMBER
38AU000443
38AU000444
38AU501316
38AU501315
38AU501317
38AU000445
38AU000446
38
39
40
41
42
43
44
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