Table 11 — Air Quantity Limits

UNIT

MINIMUM

MAXIMUM

581A

CFM

CFM

155

3600

6,000

180

4500

7,500

240

6000

10,000

Table 12 — Evaporator Fan Motor Specifications

UNIT

NOMINAL

VOLTAGE

MAX

EFF.

MAX

MAX

MAX

581A

Hp

WATTS

BHP

BkW

AMPS

 

 

155

2.9

208

2700

85.8%

3.13

2.34

9.46

(Standard

2.9

230

2700

85.8%

3.13

2.34

8.6

Motor)

2.9

460

2700

85.8%

3.13

2.34

4.3

155

3.7

208

3775

85.8%

4.38

3.27

10.5

(Optional

3.7

230

3775

85.8%

4.38

3.27

10.5

Motor)

3.7

460

3775

85.8%

4.38

3.27

4.8

180

5

208

5180

87.5%

6.13

4.57

15.8

5

230

5180

87.5%

6.13

4.57

15.8

 

5

460

5180

87.5%

6.13

4.57

7.9

240

7.5

208

7915

88.5%

9.47

7.06

22

7.5

230

8640

88.5%

10.33

7.71

22

 

7.5

460

8640

88.5%

10.33

7.71

13

BHP — Brake Horsepower

Table 13 — Accessory/FIOP Economizer Static Pressure (in. wg)

UNIT

UNIT

CFM

ECONOMIZER

581A

VOLTAGE

PRESSURE DROP

 

 

 

3,750

.03

155, 180

All

4,000

.03

5,000

.05

 

 

 

6,000

.07

 

 

7,500

.10

 

 

6,000

.07

240

All

7,200

.09

9,000

.11

 

 

 

 

10,000

.12

LEGEND

bhp — Brake Horsepower FIOP — Factory-Installed Option

NOTES:

1.The factory-assembled horizontal adapter substantially improves fan performance. See Fig. 27.

2.The static pressure must be added to external static pressure. The sum and the evaporator entering-air cfm should then be used in con- junction with the Fan Performance table to determine blower rpm, bhp, and watts.

Table 14 — Fan RPM at Motor Pulley Setting*

581A

0

1/

1

11/

2

21/

3

31/

2

4

41/

5

51/

6

 

 

2

 

2

 

2

 

 

 

2

 

2

 

155†

††

††

††

††

1064

1035

1006

 

978

949

920

891

863

834

 

 

 

 

 

 

 

 

 

 

 

 

 

 

155**

††

††

††

††

1426

1393

1360

1327

1294

1261

1227

1194

1161

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

180†

††

††

††

††

1021

1002

984

 

965

947

928

910

891

873

 

 

 

 

 

 

 

 

 

 

 

 

 

 

180**

††

††

††

††

1200

1178

1156

1134

1112

1091

1069

1047

1025

 

 

 

 

 

 

 

 

 

 

 

 

 

 

240†

††

††

††

††

1151

1132

1114

1095

1077

1058

1040

1021

1002

 

 

 

 

 

 

 

 

 

 

 

 

 

 

240**

††

††

††

††

1369

1347

1325

1303

1281

1259

1237

1215

1193

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Approximate fan rpm shown. †Indicates standard drive package. **Indicates alternate drive package.

††Due to belt and pulley style, pulley cannot be set to this number of turns open.

—23—

Page 23
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Bryant 581A Air Quantity Limits, Evaporator Fan Motor Specifications, Accessory/FIOP Economizer Static Pressure in. wg

581A specifications

The Bryant 581A is a pivotal model in the realm of heating, ventilation, and air conditioning (HVAC) systems, known for its robust performance and energy efficiency. As part of the Bryant product lineup, the 581A offers a blend of innovative technologies combined with reliable engineering, making it a suitable choice for both residential and light commercial applications.

One of the standout features of the Bryant 581A is its outstanding energy efficiency. With a Seasonal Energy Efficiency Ratio (SEER) rating of up to 16, this model meets Energy Star qualifications, ensuring that homeowners can enjoy lower utility bills while helping to reduce their environmental footprint. The efficiency is further enhanced by the unit’s environmentally friendly refrigerant, which not only improves performance but also aligns with modern sustainability standards.

Another key characteristic of the Bryant 581A is its durable construction. Designed to withstand various weather conditions, the unit features a robust cabinet that protects internal components. This durability not only prolongs the lifespan of the system but also minimizes the need for frequent maintenance or repairs. The coil design is optimized for heat transfer efficiency, enhancing the unit's overall performance in both cooling and heating modes.

In terms of technology, the Bryant 581A incorporates advanced control systems that enable precise temperature regulation. The multi-stage cooling capabilities ensure that the system can adapt to varying temperature demands, providing comfort in all seasons. Additionally, the model is compatible with smart thermostats, allowing homeowners to control their HVAC system remotely via smartphone or other connected devices.

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Overall, the Bryant 581A represents an excellent balance of efficiency, durability, and modern technology. With features aimed at enhancing user comfort and reducing operational costs, it stands out as a reliable solution in the competitive HVAC market. Whether for new installations or replacements, the Bryant 581A is a testament to the brand’s commitment to quality and innovation in home climate control.