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D
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D
C
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D
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B
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Fan Coil
Communicating AC//H
P
OAT
RYOWCHUM
C
Humidifier
24vac
A03076
Fig. 11 -- Infinity Furnace or Fan Coil Wiring with Communicating 2--stage AC
PURONR (R --410A) REFRIGERANT QUICK REFERENCE GUIDE
S Puron 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 refrigerant
S Puron refrigerant cylinders are rose colored.
S Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.
S Puron refrigerant 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 refrigerant, as with other HFCs, is only compatible w ith POE oils.
S Vacuum pumps will not remove moisture from oil.
S Do not use liquid--line filter driers with rated working pressures less t han 600 psig.
S Do not leave Puron suction line f ilter driers i n 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 e very unit.
S Do NOT use an R--2 2 TXV.
S If indoor unit is equipped with an R--22 TXV or piston metering device, it must be changed to a hard shutoff balanced port Puron TXV.
S Never open system to atmosphere while it is under a vacuum.
S When system must be opened for service, recover refrigerant, evacuate t hen break vacuum with dry nitrogen a nd replace filter driers.
Evacuate to 500 microns prior to recharging.
S Do not vent Puron refrigerant into the atmosphere.
S Do not use capillary tube coils.
S Observe all warnings, cautions,andbold text.
S All indoor coils must be installed with a hard shutoff balanced port Puron TXV metering device.
24ANA