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APPENDIX A — AIR CONDITIONER AND HEAT PUMP WITH PURON
•
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, 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.
WIRING
38AUQ SIZE
TYPE
POWER
WIRING
CONTROL
16, 25
WIRING
APPENDIX B — WIRING DIAGRAM LIST
ELECTRICAL
CHARACTERISTICS
208/230-3-60
16
460-3-60
575-3-60
208/230-3-60
25
460-3-60
575-3-60
208/230-3-60,
460-3-60,
575-3-60
®
— QUICK REFERENCE GUIDE
•
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 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 heat pumps must have indoor TXV.
•
Do not leave Puron suction line driers in place for more
than 72 hours.
DIAGRAM
NUMBER
38AU501330
38AU501331
38AU501329
38AU501333
38AU501334
38AU501332
38AU501328
34
PAGE
NUMBER
35
36
37
38
39
40
41
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