Table 1 — Physical Data

UNIT 581A

 

 

155

 

 

180

 

 

240

 

 

 

NOMINAL CAPACITY (tons)

 

 

12

 

 

15

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERATING WEIGHT (lb)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Al/Al*

 

 

 

1725

 

 

1800

 

 

1900

 

 

 

 

Al/Cu*

 

 

1875

 

 

1950

 

 

2050

 

 

 

 

Cu/Cu*

 

 

2005

 

 

2080

 

 

2180

 

 

 

Economizer

 

 

110

 

 

110

 

 

110

 

 

 

Roof Curb†

 

 

200

 

 

200

 

 

200

 

 

 

COMPRESSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Quantity

 

 

2

 

 

2

 

 

2

 

 

 

Number of Refrigerant Circuits

 

 

2

 

 

2

 

 

2

 

 

 

Crankcase Heater Watts

 

 

70

 

 

70

 

 

70

 

 

 

Oil (oz) (Ckt 1, Ckt 2)

 

 

60,66

 

 

85,60

 

 

110,110

 

 

 

REFRIGERANT TYPE

 

 

 

 

 

 

 

R-22

 

 

 

 

 

 

 

Expansion Device

 

 

 

 

 

 

 

TXV

 

 

 

 

 

 

 

Operating Charge (lb oz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Circuit 1**

 

 

20.7

 

 

19.5

 

 

18.5

 

 

 

 

Circuit 2

 

 

11.9

 

 

13.45

 

 

13.3

 

 

 

CONDENSER COIL

 

 

Cross-Hatched 3/8-in. Copper

 

Tubes, Aluminum Lanced, Aluminum Pre

-Coated, or Copper Plate Fins

 

 

Rows...Fins/in.

 

 

4...15

 

 

4...15

 

 

4...15

 

 

 

 

 

 

 

 

 

 

 

Total Face Area (sq ft)

 

 

21.7

 

 

21.7

 

 

21.7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONDENSER FAN

 

 

 

 

 

 

 

Propeller Type

 

 

 

 

 

 

 

Nominal Cfm

 

 

10,500

 

 

10,500

 

 

14,200

 

 

 

 

 

 

 

 

 

 

 

Quantity...Diameter (in.)

 

 

3...22

 

 

3...22

 

 

2...30

 

 

 

Motor Hp...Rpm

 

 

1/2...1050

 

 

1/2...1050

 

 

1...1075

 

 

 

Watts Input (Total)

 

 

1100

 

 

1100

 

 

3400

 

 

 

EVAPORATOR COIL

 

 

Cross-Hatched 3/8-in.

 

Copper Tubes, Aluminum Lanced or Copper

Plate Fins, Face Split

 

 

 

Rows...Fins/in.

 

 

4...15

 

 

4...15

 

 

4...15

 

 

 

 

 

 

 

 

 

 

 

Total Face Area (sq ft)

 

 

17.5

 

 

17.5

 

 

17.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EVAPORATOR FAN

 

 

 

 

 

 

 

Centrifugal Type

 

 

 

 

 

 

 

Quantity...Size (in.)

 

 

2...10 X 10

 

 

2...12 x 12

 

2...12 x 12

 

 

 

 

 

 

 

 

 

 

 

Type Drive

 

 

Belt

 

 

Belt

 

 

Belt

 

 

 

Nominal Cfm

 

 

5200

 

 

6000

 

 

8000

 

 

 

Std Motor Hp

 

 

2.9

 

 

5

 

 

7.5

 

 

 

Opt Motor Hp

 

 

3.7

 

 

 

 

 

 

 

 

 

 

 

 

Motor Nominal Rpm

 

 

1725

 

 

1745

 

 

1745

10.33

 

Std Maximum Continuous Bhp

 

 

3.13

 

 

6.13

 

9.47 (208 v)

 

 

 

 

 

 

 

 

 

(230 and 460 v)

 

Opt Maximum Continuous Bhp

 

 

4.38

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor Frame Size

 

 

56H

 

 

184T

 

 

213T

 

 

 

Fan Rpm Range

Low-Medium Static

 

834-1064

 

 

873-1021

 

1002-1151

 

 

 

Motor Bearing Type

High Static

 

1161-1426

 

 

1025-1200

 

1193-1369

 

 

 

 

 

Ball

 

 

Ball

 

 

Ball

 

 

 

Maximum Allowable Rpm

 

 

1550

 

 

1550

 

 

1550

 

 

 

Motor Pulley Pitch Dia.

Low-Medium Static

 

3.1/4.1

 

 

4.9/5.9

 

 

5.4/6.6

 

 

 

 

 

 

High Static

 

3.7/4.7

 

 

4.9/5.9

 

 

5.4/6.6

 

 

 

Nominal Motor Shaft Diameter (in.)

 

 

7/8

 

 

11/8

 

 

13/8

 

 

 

Fan Pulley Pitch Diameter (in.)

Low-Medium Static

 

6.0

 

 

9.4

 

 

9.4

 

 

 

 

 

 

High Static

 

5.2

 

 

8.0

 

 

7.9

 

 

 

Nominal Fan Shaft Diameter (in.)

Low-Medium Static

 

13/16

 

 

17/16

 

 

17/16

 

 

 

Belt, Quantity...Type... Length (in.)

 

1...BX...42

 

 

1...BX...50

 

1...BX...54

 

 

 

Pulley Center Line Distance (in.)

High Static

 

1...BX...42

 

 

1...BX...48

 

1...BX...50

 

 

 

 

 

13.5-15.5

 

 

13.3-14.8

 

 

14.6-15.4

 

 

 

Speed Change per Full Turn of

Low-Medium Static

 

58

 

 

37

 

 

37

 

 

 

 

Movable Pulley Flange (Rpm)

 

 

 

 

 

 

 

 

 

High Static

 

67

 

 

44

 

 

44

 

 

 

Movable Pulley Maximum

 

 

 

 

 

 

 

 

 

 

4††

 

 

4††

 

 

4††

 

 

 

 

Full Turns From Closed Position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Factory Speed

 

 

3.5

 

 

3.5

 

 

3.5

 

 

 

Factory Speed Setting (Rpm)

Low-Medium Static

 

978

 

 

965

 

 

1095

 

 

 

 

 

 

High Static

 

1327

 

 

1134

 

 

1303

 

 

 

FURNACE SECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rollout Switch Cutout Temp (F) ll

 

 

190

 

 

190

 

 

190

 

 

 

Burner Orifice Diameter (in...drill size)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas

 

0.1285...30/ 0.136...29

 

 

0.1285...30/ 0.136...29

0.1285...30/ 0.136...29

 

Thermostat Heat Anticipator Setting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stage 1 (amps)

 

0.98

 

 

0.8

 

 

0.98

 

 

0.8

0.98

 

 

 

0.8

 

 

 

 

 

 

 

 

 

Stage 2 (amps)

 

0.44

 

 

0.44

 

 

0.44

 

 

0.44

0.44

 

 

 

0.44

 

Gas Input (Btuh) Stage 1

 

172,000/230,000

 

 

206,000/275,000

 

206,000/275,000

 

 

 

 

Stage 2

 

225,000/300,000

 

 

270,000/360,000

 

270,000/360,000

 

 

Efficiency (Steady State) (%)

 

 

81

 

 

81

 

 

81

 

 

 

Temperature Rise Range

 

 

15-45/30-60

 

 

15-45/20-50

 

15-45/20-50

 

 

 

Manifold Pressure (in. wg)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas

 

 

3.3

 

 

3.3

 

 

3.3

 

 

 

Gas Valve Quantity

 

 

1

 

 

1

 

 

1

 

 

 

Gas Valve Pressure Range (in. wg)

 

 

5.5-13.5

 

 

5.5-13.5

 

 

5.5-13.5

 

 

 

 

 

(psig)

 

 

.235-.487

 

 

.235-.487

 

 

.235-.487

 

 

 

Field Gas Connection Size (in.-FPT)

 

 

3/4

 

 

3/4

 

 

3/4

 

 

 

HIGH-PRESSURE SWITCH (psig)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cutout

 

 

 

 

 

 

426

 

 

 

 

 

 

 

Reset (Auto.)

 

 

 

 

 

320

 

 

 

 

 

 

 

LOW-PRESSURE SWITCH (psig)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cutout

 

 

 

 

 

 

27

 

 

 

 

 

 

 

Reset (Auto.)

 

 

 

 

 

44

 

 

 

 

 

 

 

FREEZE PROTECTION THERMOSTAT (F)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Opens

 

 

 

 

 

 

30 ± 5

 

 

 

 

 

 

 

Closes

 

 

 

 

 

 

45 ± 5

 

 

 

 

 

 

 

OUTDOOR-AIR INLET SCREENS

 

 

 

 

 

 

 

Cleanable

 

 

 

 

 

 

 

Quantity...Size (in.)

 

 

 

 

 

 

 

2...20 x 25 x 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1...20 x 20 x 1

 

 

 

 

 

 

 

RETURN-AIR FILTERS

 

 

 

 

 

 

 

Throwaway

 

 

 

 

 

 

 

Quantity...Size (in.)

 

 

 

 

 

 

 

4...20 x 20 x 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4...16 x 20 x 2

 

 

 

 

 

 

 

 

 

LEGEND

 

 

 

 

*Evaporator coil fin material/condenser coil fin material.

 

 

 

 

 

Al

Aluminum

 

 

 

 

†Weight of 14-in. roof curb.

 

 

 

 

 

 

 

 

 

 

 

**Circuit 1 uses the lower portion of condenser coil and lower portion of evaporator coils, and

Bhp

Brake Horsepower

 

 

 

 

 

 

 

 

 

Circuit 2 uses the upper portion of both coils.

 

 

 

 

 

 

Cu

Copper

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

††Pulley has 6 turns. Due to belt and pulley, moveable pulley cannot be set to 0 to 1 turns open.

TXV

Thermostatic Expansion Valve

 

 

 

 

 

 

 

 

llRollout switch is manual reset.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

—6—

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Bryant operation manual Physical Data, Unit 581A

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.

Noise reduction is another aspect where the Bryant 581A excels. Equipped with a variable-speed compressor and sound-dampening features, this model operates quietly, minimizing disruption in residential or office environments. This focus on acoustic comfort makes it an ideal choice for those who value a peaceful living or working space.

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.