Filter
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After closing test pins and appropriate cycle time has
elapsed, the reversing valve should shift to defrost mode
and the outdoor fan should stop. After 2 seconds of
defrost operation, the reversing valve should shift back to
",tingoperation and the outdoor fan should start.
System Performance
For maximum performance of this heat pump system, the
operating temperatures and pressures should be checked
and superheat determined at Standard ARI test conditions
of 82°F outdoor - 80°F indoor dry bulb/67°F wet bulb. If
superheat measured deviates from the values given in
Table 3, refrigerant charge should be adjusted accordingly
for maximum performance.
Suction Superheat
Suction Superheat
Outdoor
@ ARI Conditions
Unit
82 ° OD
Model
80° IDDB/67 ° IDWB
PWC183 18° - 20° F
PWC243 17° - 19° F
Motors
The indoor and outdoor fan motors are permanently
lubricated and require no maintenance.
Outdoor Coil
Foreign material should not be allowed to accumulate on
the outdoor coil surface or other parts in the air circuit.
Cleaning should be as often as necessary to keep the coil
clean. Use a brush, vacuum cleaner attachment or other
suitable means. Be sure power to unit is shut off
before using water to clean the coil.
Care should be used when cleaning the coils so that
the coil fins are not damaged.
Outdoor Base Drain
Foreign material should not be allowed to clogthe drain
hole. inspect and clear drain opening priorto heating
season.
Table 3
MAINTENANCE
Shutoff all electrical power to the unit before
conducting any maintenance procedures.
Failure to do so could cause personal injury.
Periodic inspection and maintenance normally consists of
changing or cleaning filters and (under some conditions)
cleaning the coils.
Filter
Inspect the filter once a month. Replace disposable filter
or clean the permanent-type filter as necessary (a mini-
mum ofthree times each heating or cooling season is
recommended). Do not replace permanent-type filter with
a disposable filter unless an installation was made in
which the filter was mounted exterior to the unit (see Air
Filter section on page 4).