Bard W12A2-A Troubleshooting, Fan Blade Setting Dimensions, Refrigerant Charge, R-410A

TROUBLESHOOTING

FAN BLADE SETTING DIMENSIONS

Shown in Figure 7 is the correct fan blade setting dimension 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 dimension below be checked and blade adjusted in or out on the motor shaft accordingly.

FIGURE 7

FAN BLADE SETTING DIMENSION

TABLE 4

INDOOR BLOWER

PERFORMANCE

CFM @ 230V / 115V

E.S.P.			W12Aà
		230V / 115V
in
H2O	Dry / Wet			Dry / Wet
	High			Low
.0	530	/ 500		465	/ 425
.1	485	/ 460		415	/ 400
.2	440	/ 425		365	/ 350
.3	390	/ 375		315	/ 300
.4	325	/ 300		270	/ 265

TABLE 5

RATED CFM AND ESP

RECOMMENDED AIRFLOW RANGE

Model	°	°	Recommended
	Rated	Rated
			Airflow Range
	CFM	ESP
W12Aà	400	.10	500 - 300

°Rated CFM and ESP on low speed tap.

TABLE 3

FAN BLADE DIMENSION

Model	Dimension A
W12Aà	1/2"

R-410A

REFRIGERANT CHARGE

This unit was charged at the factory with the quantity of refrigerant listed on the serial plate. AHRI capacity and efficiency ratings were determined by testing with this refrigerant charge quantity.

The following pressure tables show nominal pressures for the units. Since many installation specific situations can affect the pressure readings, this information should only be used by certified technicians as a guide for evaluating proper system performance. They shall not be used to adjust charge. If charge is in doubt, reclaim, evacuate and recharge the unit to the serial plate charge.

TABLE 6

MAXIMUM ESP OF OPERATION

ELECTRIC HEAT ONLY

Model	ESP
W12A2-A00	.35
A03	.35
A05	.35
W12A1-K00	.35
K02	.35

Values shown are for units equipped with STD 1" throwaway filters. Derate ESP by .15 for 2" pleated filters.

Manual	2100-509E
Page	16 of 17