Bard Air Conditioner and Wall Mount Troubleshooting Manual

Models: WA121

1 17
Download 17 pages 37.07 Kb
Page 16
Image 16

TROUBLESHOOTING

FAN BLADE SETTING DIMENSIONS

Show in Figure 8 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 8

FAN BLADE SETTING DIMENSION

TABLE 5

FAN BLADE DIMENSION

Model

Dimension A

 

 

WA121

1/2"

 

 

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" from compressor as shown in Table 6.

TABLE 6

SUCTION LINE TEMPERATURE

 

Rated

95o OD

82o OD

Model

Airflow

Temperature

Temperature

 

 

 

 

WA121

400

54 - 56

65 - 67

 

 

 

 

The suction line temperatures in Table 6 are based upon 80° F dry bulb / 67° F wet bulb (50% R.H.) temperature and rated airflow across the evaporator during cooling cycle.

TABLE 7

INDOOR BLOWER

PERFORMANCE

CFM @ 230V

 

WA121

 

 

E.S.P.

230V

 

 

 

 

 

 

in H2O

Dry /

Wet

.0

530

/

500

.1

485

/

460

.2

440

/

425

.3

390

/

375

.4

325

/

300

 

 

 

 

TABLE 8

RATED CFM AND ESP

RECOMMENDED AIRFLOW RANGE

 

Rated

Rated

Recommended

Model

CFM*

ESP*

Airflow Range

 

 

 

 

WA121

400

.25

500 - 300

 

 

 

 

* Rated CRM and ESP on high speed tap.

TABLE 9

MAXIMUM ESP OF OPERATION

ELECTRIC HEAT ONLY

Model

ESP

 

 

WA121-A00

.35

A03

.35

A05

.35

 

 

WA121-K00

.35

K02

.35

 

 

WA121-G00

.35

G02

.35

G03

.35

 

 

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

Manual 2100-234IPage 16 of 17

Page 16
Image 16
Bard WA121 installation instructions Troubleshooting, FAN Blade Setting Dimensions, Refrigerant Charge

WA121 specifications

The Bard WA121 is a cutting-edge heating and cooling unit that has been designed for residential and light commercial applications. With a focus on energy efficiency and user comfort, the WA121 stands out in the competitive HVAC market. One of its most notable features is its energy efficiency rating, which meets or exceeds the standards set by the Department of Energy. This translates to significant savings on utility bills, ultimately benefiting both the environment and the consumer's wallet.

A key characteristic of the Bard WA121 is its advanced direct expansion system. This feature allows for optimal heat transfer, resulting in quick and effective temperature regulation. The unit is equipped with a high-efficiency scroll compressor that ensures smooth operation and reduced noise levels, making it suitable for installation in residential settings without disrupting daily life.

The versatile design of the WA121 enables it to be used in various applications, from offices and schools to workshops. Its compact structure means that it can be easily integrated into tight spaces while still delivering robust performance. The unit is built to withstand harsh conditions, featuring a durable cabinet that is made from galvanized steel and finished with a weather-resistant powder coating.

Another outstanding feature is the integrated microprocessor control. This technology allows for precise temperature management, ensuring consistent comfort levels throughout the space. Additionally, the WA121 comes with a programmable thermostat option, providing users with the flexibility to optimize energy consumption based on usage patterns.

The Bard WA121 also focuses on user convenience with its easy-to-access maintenance points. The design allows technicians to perform routine service checks and repairs without excessive disassembly, thereby reducing downtime and maintenance costs.

In terms of airflow, the WA121 utilizes a multi-speed fan that can adjust to varying conditions, ensuring that air distribution remains efficient regardless of external temperatures. This adaptability enhances the overall performance of the unit, making it an ideal choice for diverse environments.

Overall, the Bard WA121 is engineered with a blend of efficiency, durability, and user-friendliness that positions it as a reliable solution for heating and cooling needs. With its commitment to performance and innovation, it is a solid investment for those looking to upgrade their HVAC systems.