9
IMPORTANT!
See the wiring diagram or the Product Data Book applicable
to your model* to determine if this unit has a crankcase
heater. If it does, you must connect electrical power to the
unit for four hours before operating the compressor.
Failure to do so could result in compressor damage.
During all installation and service work, follow all
regulations of the Environmental Protection Agency. (This
system uses R-22 - an HCFC [Hydrogenated
Chlorofluorocarbon].) Violation of EPA regulations may
result in fines or other penalties.
Preliminary Charge Adjustment
Use a male hex head wrench (3/16” for liquid, 5/16” for
suction) to carefully open the suction and liquid valve stem
on the unit. These valves do not back seat. OPEN EACH
VALVE ONLY UNTIL THE TOP OF THE STEM IS 1/8”
FROM THE RETAINER. TO AVOID LOSS OF REFRIG-
ERANT, DO NOT APPLY PRESSURE TO THE RETAINER.
The outdoor unit is factory-charged with enough R-22 for
the matching indoor blower coil or matching A-coil
plus
15
feet of 3/8” liquid line. For liquid line lengths greater than 15
feet, add 0.55 oz. of R-22 per additional foot up to 50 feet.
For line sets over 50 feet consult an Amana
®
distributor.
For liquid line lengths less than 25 feet, subtract 0.55 oz.
of R-22 per deviating foot.
IMPORTANT:
Use only refrigerant which is certified to
meet ARI Standard 700. Used refrigerant may cause
compressor damage, and will void the warranty. (Most
portable machines cannot clean used refrigerant well
enough to meet this ARI Standard.)
IMPORTANT
: If adding additional refrigerant to a system,
add only refrigerant vapor (not liquid) through the suction
valve (low side) on the outdoor unit. Any other practice may
cause compressor damage.
System Startup
Final Charge Adjustment
(Matching Systems-Cooling Operation)
IMPORTANT: Never operate the compressor with the
suction valve closed to “test the compressor’s pumping
efficiency”. In some cases, this can result in serious
compressor damage and loss of warranty coverage.
If installing a non-matching system, the outdoor tempera-
ture must be 60°F or higher to perform the final charge
adjustment.
If the outdoor temperature is 60°F or higher, set the room
thermostat to COOL, fan switch to AUTO, and set the
temperature control well below room temperature.
Turn the electrical power on, and let the system run for
several minutes. It will take some time for the refrigerant
pressures to stabilize.
If you are using the “Matched Combination”, see the
Product Data Book applicable to your model*. Compare
the operating pressures and outdoor unit amp draw to the
numbers listed. If pressures and amp draw are too low, add
charge. If pressures and amp draw are too high, remove
charge.
If you are not using the “Matched Combination” which is
listed on the Product Data Book applicable to your model*,
check subcooling (TEV coils) or superheat (cap tube or
flowrator coils) as detailed in the following section.
