Troubleshooting, FAN Blade Setting Dimensions

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	1.25
	WA372

"A"

MIS-1724

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 R-22 charge is shown on the unit rating plate. Optimum unit performance will occur with a refrigerant charge resulting in a suction line temperature (6 inches from compressor) as shown in Table 8.

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
Model	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	2100-404E
Page	17 of 19

2100-404E specifications

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