37
A06311
Fig. 30 -- Outdoor Coil Thermistor (OCT) Attachment
FINAL CHECKS
IMPORTANT
: Before leaving job, be sure to do the following:
1. Ensure that all wiring is routed away from tubing and sheet
metal edges to prevent rub--through or wire pinching.
2. Ensure that all wiring and tubing is secure in unit before
adding panels and covers. Securely fasten all panels and
covers.
3. Leave Users Manual with owner. Explain system operation
and periodic maintenance requirements outlined in manual.
4. Fill out Start--Up Checklist located at the back of this
manual and place in customer file.
CARE AND MAINTENANCE
For continuing high performance and to minimize possible
equipment failure, periodic maintenance must be performed on this
equipment.
Frequency of maintenance may vary depending upon geographic
areas, such as coastal applications. See Users Manual for
information.
HEAT PUMP WITH PURON
REFRIGERATION SECTION QUICK--REFERENCE GUIDE
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. Puron refrigerant cylinders are rose colored.
S
Puron refrigerant cylinders manufactured prior to March 1, 1999, have a dip tube that allows liquid to flow out of cylinder in upright
position. Cylinders manufactured March 1, 1999 and later DO NOT have a dip tube and MUST be positioned upside down to allow liquid
to flow.
S
Recovery cylinder service pressure rating must be 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.
S
Manifold sets should be minimum 700 psig high side and 180 psig low side with 550 psig low side retard.
S
Use hoses with minimum 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
Only use factory--specified liquid--line filter driers with rated working pressures no less than 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 Puron liquid--line filter drier is required on every unit.
S
Do not use an R--22 TXV.
S
Never
open system to atmosphere while it is under a vacuum.
S
When system must be opened for service, break vacuum with dry nitrogen and replace filter driers.
S
Do not vent Puron into the atmosphere.
S
Observe all
warnings, cautions,
and
bold
text.
S
Do not leave Puron suction line driers in place for more than 72 hrs.
677D
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A
