SERVICE AND TROUBLESHOOTING

SERVICE HINTS

1.Caution homeowner to maintain clean air filters at all times. Also, not to needlessly close off supply and return air registers. This reduces air flow through the system which shortens equipment service life as well as increasing operating costs.

2.Check all power fuses or circuit breakers to be sure that they are the correct rating.

3.Periodic cleaning of the outdoor coil to permit full and unrestricted airflow circulation is essential.

PRESSURE SERVICE PORTS

High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure tables can be found later in this manual covering all models on cooling cycle. It is imperative to match the correct pressure table to the unit by model number.

FAN BLADE SETTINGS

Shown in Figure 8 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.

FIGURE 8

FAN BLADE SETTING

"B"

“A”MD-1417BC

REFRIGERANT CHARGE

The correct system R-410A charge is shown on the unit rating plate.

TABLE 8

REFRIGERANT CHARGE

Model

Rated

95° OD

82° OD

Airflow

Temperature

Temperature

 

TABLE 9

FAN BLADE SETTING DIMENSIONS

Model

Dimension "A"

PA1324

PA1330

PA1336

PA1324

800

96-97

83-84

 

 

 

 

PA1330

1000

94-95

82-83

 

 

 

 

PA1336

1100

97-98

85-86

PA1342

PA1348

3¼"

PA1342

1400

98-99

85-86

 

 

 

 

PA1348

1550

98-99

85-86

 

 

 

 

PA1360

1650

101-102

88-89

The above liquid line temperatures are based upon 80°F dry bulb/67° wet bulb (50% RH) temperatures and rated airflow across the evaporator during cooling cycle.

PA1360

TABLE 10

INDOOR BLOWER PERFORMANCE 1

 

 

 

2

3

4

Model

Rated

MAX

Continuous

Rated

Rated

ESP

ESP

Airflow

Cooling

Heating

 

 

 

 

 

CFM

CFM

 

 

 

 

 

 

PA1324

0.10

0.50

600

800

800

PA1330

0.15

0.50

750

1000

1000

PA1336

0.15

0.50

825

1100

1100

 

 

 

 

 

 

PA1342

0.20

0.50

925

1400

1400

 

 

 

 

 

 

PA1348

0.20

0.50

1025

1550

1550

 

 

 

 

 

 

PA1360

0.20

0.50

1150

1650

1650

 

 

 

 

 

 

1Motor will deliver consistent CFM through voltage supply range with no deterioration (197-253V for all 230/208V models).

2Continuous CFM is the total air being circulated during continuous (manual fan) mode.

3Will occur automatically with a call for "Y" for cooling mode operation.

4Will occur automatically with a call for "W1" for heating mode operation.

Manual

2100-467

Page

18 of 23

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Bard PA13421-A Service and Troubleshooting, Service Hints, Pressure Service Ports, FAN Blade Settings, Refrigerant Charge

PA13601-B, PA13481-A, PA13601-A, PA13481-B, PA13421-A specifications

Bard is a renowned name in the HVAC (Heating, Ventilation, and Air Conditioning) industry, known for its innovative products that ensure comfort and efficiency in various settings. The models PA13421-B, PA13421-A, PA13481-B, PA13601-A, and PA13481-A are prime examples of Bard's commitment to quality and technology, providing reliable performance and advanced features suitable for both commercial and residential applications.

The PA13421-B and PA13421-A are designed for energy efficiency, boasting high SEER (Seasonal Energy Efficiency Ratio) ratings that significantly reduce energy consumption without sacrificing performance. These units utilize a scroll compressor, which is known for its quiet operation and superior reliability. Additionally, they feature advanced microprocessor control systems that allow for precise temperature regulation and can be easily integrated into building management systems.

The PA13481-B and PA13481-A models are equipped with durable, heavy-gauge cabinets that protect the internal components from environmental factors, ensuring longevity and minimal maintenance. These units also incorporate a high-capacity airflow design, which improves indoor air quality by effectively circulating air throughout the space. The implementation of variable-speed blowers further enhances comfort levels by adjusting airflow based on real-time demand.

The PA13601-A model stands out with its versatility, as it can operate effectively in a wide range of climates. Its design includes a robust refrigerant management system that ensures optimal performance even in extreme temperatures, making it a favorite for users in harsher environments. This model also features a comprehensive diagnostic system that alerts users to potential issues before they escalate, facilitating proactive maintenance.

All these models emphasize sustainability, incorporating environmentally friendly refrigerants that comply with international regulations. Bard's dedication to reducing carbon footprints is evident in these units, which not only perform admirably but also contribute to a greener planet.

In summary, the Bard PA13421-B, PA13421-A, PA13481-B, PA13601-A, and PA13481-A models exemplify cutting-edge technology and superior engineering in the HVAC sector. With their energy-efficient designs, robust construction, and advanced control systems, these HVAC solutions provide reliable comfort for users while being mindful of environmental impact.