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R-410a, Troubleshooting – Bard Wall Mounted Package Air Conditioners W12A2-A User Manual

Page 16

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Manual 2100-509E

Page

16 of 17

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 3

FAN BLADE DIMENSION

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 4

INDOOR BLOWER

PERFORMANCE

CFM @ 230V / 115V

TABLE 5

RATED CFM AND ESP

RECOMMENDED AIRFLOW RANGE

°

Rated CFM and ESP on low speed tap.

TABLE 6

MAXIMUM ESP OF OPERATION

ELECTRIC HEAT ONLY

Values shown are for units equipped with STD

1" throwaway filters. Derate ESP by .15 for 2"

pleated filters.

Model

Dimension A

W12Aà

1/2"

E.S.P.

in

H

2

O

W12Aà

230V / 115V

Dry / Wet

High

Dry / Wet

Low

.0

.1

.2

.3

.4

530 / 500

485 / 460

440 / 425

390 / 375

325 / 300

465 / 425

415 / 400

365 / 350

315 / 300

270 / 265

Model

°

Rated

CFM

°

Rated

ESP

Recommended

Airflow Range

W12Aà

400

.10

500 - 300

Model

ESP

W12A2-A00

A03

A05

.35

.35

.35

W12A1-K00

K02

.35

.35

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