14
PURON
R
REFRIGERANT (R--410A) QUICK REFERENCE GUIDE
S
Puron
r
refrigerant operates at 50--70 percent higher pressures than R--22. Be sure that servicing equipment and replacement components
are designed to operate with Puron
r
.
S
Puron
r
refrigerant cylinders are rose colored.
S
Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.
S
Puron
r
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 700 psig high side and 180 psig low side with 550 psig low--side retard.
S
Use hoses with 700 psig service pressure rating.
S
Leak detectors should be designed to detect HFC refrigerant.
S
Puron
r
, as with other HFCs, is only compatible with POE oils.
S
Vacuum pumps will not remove moisture from oil.
S
Do not use liquid--line filter driers with rated working pressures less than 600 psig.
S
Do not leave Puron
r
suction line filter driers in line longer than 72 hours.
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 an R--22 TXV or piston metering device, it must be changed to a hard shutoff Puron
r
TXV.
S
Never open system to atmosphere while it is under a vacuum.
S
When system must be opened for service, recover refrigerant, evacuate then break vacuum with dry nitrogen and replace filter driers.
Evacuate to 500 microns prior to recharging.
S
Do not vent Puron
r
into the atmosphere.
S
Do not use capillary tube coils.
S
Observe all warnings, cautions, and bold text.
S
All indoor coils must be installed with a hard shutoff Puron
R
TXV metering device.
Copyright 2006 CAC / BDP
S
7310 W. Morris St.
S
Indianapolis, IN 46231
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No:
IM---FX4C---02
Replaces:
IM--FX4C--01
Printed in U.S.A.
Edition Date: 08/06
FX4
C
/F
Y4
A
