36
APPENDIX A
AIR CONDITIONER & HEAT PUMP WITH
PURON
®
—
QUICK REFERENCE GUIDE
S
Puron
®
(R-410A) refrigerant operates at 50 percent to
70 percent higher pressures than R-22. Be sure that
servicing equipment and replacement components are
designed to operate with Puron
®
.
S
Puron
®
refrigerant cylinders are rose colored.
S
Recovery cylinder service pressure rating must be
2758 kPa (400 psig), DOT 4BA400 or DOT BW400.
S
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.
S
Manifold sets should be 4826 kPa (700 psig) high side
and 180 psig low side with 3290 kPa (550 psig)
low-side retard.
S
Use hoses with 4826 kPa (700 psig) service pressure
rating.
S
Leak detectors should be designed to detect HFC
refrigerant.
S
Puron
®
, as with other HFCs, is only compatible with
POE oils.
S
Vacuum pumps will not remove moisture from oil.
S
Use only factory specified liquid-line filter driers with
rated working pressures greater than 4137kPa (600 psig).
S
Do not install a suction-line filter drier in liquid-line.
S
POE oils absorb moisture rapidly. Do not expose oil to
atmosphere.
S
POE oils may cause damage to certain plastics and
roofing materials.
S
Wrap all filter driers and service valves with wet cloth
when brazing.
S
A factory approved, liquid-line filter drier is required on
every unit.
S
Do not use an R-22 TXV.
S
If indoor unit is equipped with a TXV, it must be
changed to a Puron
®
TXV.
S
Never open system to atmosphere while it is under a
vacuum.
S
When system must be opened for service, recover
refrigerant, break vacuum with dry nitrogen before
opening system.
S
Always replace filter drier after opening system for
service.
S
Do not vent Puron
®
into the atmosphere.
S
Do not use capillary tube coils.
S
Observe all
warnings
,
cautions
, and
bold
text.
S
All Puron
®
heat pumps must have indoor TXV.
S
Do not leave Puron
®
suction line driers in place for
more than 72 hours.
APPENDIX B
WIRING DIAGRAM LIST
Unit
Electrical Characteristics
Diagram Number
38AD*16
400---3---50
38AU500824
38AD*25
400---3---50
38AU500825
38A
U
D
Содержание 38AUD*12 Series
Страница 21: ...21 Fig 19 38AUZ 07 Charging Chart Fig 20 38AUZ 08 Charging Chart...
Страница 22: ...22 Fig 21 38AUD 12 Charging Chart...
Страница 23: ...23 Fig 22 38AUD 14 Charging Chart...
Страница 24: ...24 Fig 23 Typical 38AUZ Wiring Diagram 50Hz Single Circuit Unit Shown...
Страница 25: ...25 Fig 24 Typical 38AUD Wiring Diagram 50Hz Dual Circuit Unit Shown...
Страница 61: ...21 C10084 Fig 18 Typical 38AUD 16 Wiring Diagram 38AUD...
Страница 62: ...22 C10085 Fig 19 Typical 38AUD 25 Wiring Diagram 38AUD...