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 | |
Outdoor | Suction Superheat | |
@ ARI Conditions | ||
Unit | ||
82 ° OD | ||
Model | ||
80 ° IDDB/67 ° IDWB | ||
| ||
PWC183 | 18 ° - 20 ° F | |
PWC243 | 17° - 19° F |
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
Filter section on page 4).
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 clog the drain hole. inspect and clear drain opening prior to heating season.
