IMPORTANT INFORMATION
2
IMPORTANT NOTICES
RECOGNIZE SAFETY SYMBOLS, WORDS AND
LABELS
WARNING
THIS UNIT SHOULD NOT BE CONNECTED TO, OR USED IN
CONJUNCTION WITH, ANY DEVICES THAT ARE NOT DESIGN
CERTIFIED FOR USE WITH THIS UNIT OR HAVE NOT BEEN
TESTED AND APPROVED BY THE MANUFACTURER. SERIOUS
PROPERTY DAMAGE OR PERSONAL INJURY, REDUCED UNIT
PERFORMANCE AND/OR HAZARDOUS CONDITIONS MAY RESULT
FROM THE USE OF DEVICES THAT HAVE NOT BEEN APPROVED
OR CERTIFIED BY THE MANUFACTURER.
WARNING
TO PREVENT THE RISK OF PROPERTY DAMAGE, PERSONAL
INJURY, OR DEATH, DO NOT STORE COMBUSTIBLE MATERIALS
OR USE GASOLINE OR OTHER FLAMMABLE LIQUIDS OR
VAPORS IN THE VICINITY OF THIS APPLIANCE.
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING
OR INSTALLING THIS UNIT. MULTIPLE POWER
SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
OUTSIDE THE U.S.,
call 1-713-861-2500
.
(Not a technical assistance line for dealers.) Your telephone company will bill you for the call.
SAFE REFRIGERANT HANDLING
While these items will not cover every conceivable
situation, they should serve as a useful guide.
WARNING
Refrigerants are heavier than air. They can “push out” the
oxygen in your lungs or in any enclosed space. To avoid
possible difficulty in breathing or death:
•
Never purge refrigerant into an enclosed room or
space. By law, all refrigerant must be reclaimed.
•
If an indoor leak is suspected, thoroughly ventilate the
area before beginning work.
•
Liquid refrigerant can be very cold. To avoid possible
frostbite or blindness, avoid contact with refrigerant
and wear gloves and goggles. If liquid refrigerant
does contact your skin or eyes, seek medical help
immediately.
•
Always follow EPA regulations. Never burn refrigerant,
as poisonous gas will be produced.
WARNING
To avoid possible injury, explosion or death, practice safe
handling of refrigerants.
WARNING
The compressor POE oil for R-410A units is extremely
susceptible to moisture absorption and could cause
compressor failure. Do not leave system open to atmosphere
any longer than necessary for installation.
WARNING
To avoid possible explosion:
•
Never apply flame or steam to a refrigerant cylinder. If
you must heat a cylinder for faster charging, partially
immerse it in warm water.
•
Never fill a cylinder more than 80% full of liquid
refrigerant.
•
Never add anything other than R-22 to an R-22 cylinder
or R-410A to an R-410A cylinder. The service equipment
used must be listed or certified for the type of
refrigerant used.
•
Store cylinders in a cool, dry place. Never use a
cylinder as a platform or a roller.
WARNING
To avoid possible explosion, use only returnable (not
disposable) service cylinders when removing refrigerant
from a system.
•
Ensure the cylinder is free of damage which could lead
to a leak or explosion.
•
Ensure the hydrostatic test date does not exceed 5
years.
•
Ensure the pressure rating meets or exceeds 400
lbs.
When in doubt, do not use cylinder.
STANDING PRESSURE TEST (RECOMMENDED
BEFORE SYSTEM EVACUATION) ............................. 21
(NITROGEN OR NITROGEN-TRACED) ..................... 21
SYSTEM EVACUATION .............................................. 21
CHARGING ................................................................. 22
CHECKING COMPRESSOR EFFICIENCY ................ 23
THERMOSTATIC EXPANSION VALVE ....................... 23
OVERFEEDING .......................................................... 23
UNDERFEEDING ........................................................ 23
SUPERHEAT ............................................................... 26
CHECKING SUBCOOLING ......................................... 27
CHECKING EXPANSION VALVE OPERATION .......... 28
FIXED ORIFICE RESTRICTION DEVICES ................ 28
CHECKING RESTRICTED LIQUID LINE .................... 28
REFRIGERANT OVERCHARGE ............................... 28
NON-CONDENSABLES .............................................. 28
COMPRESSOR BURNOUT ........................................ 28
REVERSING VALVE REPLACEMENT ....................... 29
CHECKING EXTERNAL STATIC PRESSURE ............ 30
CHECKING TEMPERATURE RISE ............................ 30
WIRING DIAGRAMS ....................................................... 31
