TROUBLESHOOTING
FAN BLADE SETTING DIMENSIONS
Shown in the drawing below are the correct fan blade setting dimensions for proper air delivery across the outdoor coil.
Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly.
The suction line temperatures in Table 8 are based upon 80ºF dry bulb/67ºF wet bulb (50 percent R.H.) temperature and rated airflow across the evaporator during cooling cycle.
TABLE 9
INDOOR BLOWER PERFORMANCE
CFM AT 230 VOLTS
WA302, WA372 | |
High Speed | Low Speed |
FIGURE 9
FAN BLADE SETTING
AIRFLOW
TABLE 7
FAN BLADE DIMENSION
Model | Dimension A | |
|
| |
WA302 | 1.25 | |
WA372 | ||
|
"A"
E.S.P. |
|
|
|
|
In H2O | Dry Coil | Wet Coil | Dry Coil | Wet Coil |
.0 | 1,395 | 1,315 | 950 | 935 |
|
|
|
|
|
.1 | 1,340 | 1,270 | 930 | 915 |
|
|
|
|
|
.2 | 1,285 | 1,190 | 910 | 885 |
|
|
|
|
|
.3 | 1,205 | 1,100 | 855 | 830 |
|
|
|
|
|
.4 | 1,110 | 1,000 | 800 | 755 |
|
|
|
|
|
.5 | 1,005 | 870 | ||
|
|
|
|
|
TABLE 10
RATED CFM AND ESP
REMOVAL OF FAN SHROUD
1.Disconnect all power to unit.
2.Remove the screws holding both grills – one on each side of unit – and remove grills.
3.Remove screws holding fan shroud to condenser and bottom – 9 screws.
4.Unwire condenser fan motor.
5.Slide complete motor, fan blade, and shroud assembly out the left side of the unit.
6.Service motor/fan as needed.
7.Reverse steps to reinstall.
REFRIGERANT CHARGE
The correct system
TABLE 8
SUCTION LINE TEMPERATURES
| Rated | 95° F | 82° F |
Models | Airflow | OD Temp. | OD Temp. |
|
|
|
|
WA302 | 1,000 | 56 – 59 | 64 – 66 |
|
|
|
|
WA372 | 1,100 | 57 – 59 | 62 – 64 |
| 1 | 1 |
|
Model | Rated | Rated | Recommended |
CFM | ESP | Airflow Range | |
WA302 | 1,000 | .40 | 930 – 1,300 |
|
|
|
|
WA371 | 1,100 | .30 | 930 – 1,350 |
|
|
|
|
1Rated CFM and ESP on high speed tap
TABLE 11
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
Model | Front Outlet | Top Outlet | ||
|
|
|
|
|
Speed | Low | High | Low | High |
KW | Speed | Speed | Speed | Speed |
|
|
|
|
|
A0Z | .50 | .50 | .50 | .50 |
A05 | .50 | .50 | .45 | .50 |
A08 | .50 | .50 | ||
A10 | .45 | .50 | .35 | .50 |
A15 | .35 | .40 | ||
B0Z | .50 | .50 | .50 | .50 |
B06 | .40 | .50 | ||
B09 | .50 | .50 | .40 | .45 |
B15 | .30 | .45 | ||
C0Z | .50 | .50 | .50 | .50 |
C06 | .50 | .50 | ||
C09 | .40 | .50 | .40 | .45 |
C15 | .35 | .45 | ||
Manual | |
Page | 17 of 19 |
