PHYSICAL DATA — 581B090-150 (cont)

 

 

 

 

UNIT SIZE 581B

 

 

090

102

 

120

150

 

 

 

 

FURNACE SECTION

 

 

 

 

 

 

 

 

 

 

 

Rollout Switch Cutout Temp (F)†

 

195

195

 

195

195

 

 

 

 

Burner Orifice Diameter (in. ...drill size)**

Lo

 

 

 

 

 

 

 

 

 

Natural Gas — Std

 

.120...31

.120...31

 

.120...31

.120...31

 

 

 

 

 

 

Med

.120...31

.120...31

 

.120...31

.129...30

 

 

 

 

 

 

Hi

.120...31

.120...31

 

.129...30

 

 

 

 

 

Liquid Propane — Alt††

Lo

.096...41

.096...41

 

.096...41

.096...41

 

 

 

 

 

 

Med

.096...41

.096...41

 

.096...41

.102...38

 

 

 

 

 

 

Hi

.096...41

.096...41

 

.102...38

 

 

 

 

 

Thermostat Heat Anticipator Setting (amps)

 

 

 

 

 

 

 

 

 

 

 

Stage 1

 

.14

.14

 

.14

.14

 

 

 

 

 

 

 

.14

.14

 

.14

.14

 

 

 

 

 

Stage 2

 

.14

.14

 

.14

 

 

 

 

 

 

 

.14

.14

 

.20

.20

 

 

 

 

 

 

 

.20

.20

 

.20

.20

 

 

 

 

Gas Input (Btuh)

Stage 1

Lo

.20

.20

 

.20

 

 

 

 

 

 

 

 

 

 

 

90,000

90,000

 

120,000

120,000

 

150

 

 

 

 

Med

120,000

120,000

 

180,000

180,000

 

 

 

 

 

Hi

180,000

180,000

 

200,000

 

 

 

 

 

Stage 2

Lo

125,000

125,000

 

180,000

180,000

 

581B036-

 

 

Temperature Rise Range

Med

180,000

180,000

 

224,000

224,000

 

 

Lo

20-50

20-50

 

35-65

35-65

 

 

 

 

Efficiency (Steady State) (%)

Hi

224,000

224,000

 

250,000

 

 

 

 

 

 

82

82

 

82

82

 

 

 

 

 

 

 

82

82

 

82

80

 

 

 

 

 

 

 

82

82

 

80

 

 

 

 

 

 

 

Med

35-65

35-65

 

35-65

40-70

 

 

 

 

Manifold Pressure (in. wg)

Hi

45-75

45-75

 

40-70

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas — Std

 

 

3.5

3.5

 

3.5

3.5

 

 

 

 

Liquid Propane — Alt††

Lo

3.5

3.5

 

3.5

3.5

 

 

 

 

Field Gas Connection Size (in.)

.50

.50

 

.75

.75

 

 

 

 

 

 

Med

.75

.75

 

.75

.75

 

 

 

 

 

 

Hi

.75

.75

 

.75

 

 

 

 

 

HIGH-PRESSURE SWITCH (psig)

 

 

 

 

 

 

 

 

 

 

Standard Compressor Internal Relief

 

 

 

450 ± 50

 

 

 

 

 

Cutout

 

 

 

 

428

 

 

 

 

 

Reset (Auto.)

 

 

 

 

320

 

 

 

 

 

LOSS-OF-CHARGE SWITCH/LOW-PRESSURE

 

 

 

 

 

 

 

 

 

 

SWITCH (Liquid LIne) (psig)

 

 

 

 

 

 

 

 

 

 

Cutout

 

 

 

 

7 ± 3

 

 

 

 

 

Reset (Auto.)

 

 

 

 

22 ± 7

 

 

 

 

 

FREEZE PROTECTION THERMOSTAT

 

 

 

 

 

 

 

 

 

 

Opens (F)

 

 

 

 

30 ± 5

 

 

 

 

 

Closes (F)

 

 

 

 

45 ± 5

 

 

 

 

 

OUTDOOR-AIR INLET SCREENS

 

 

 

Cleanable

 

 

 

 

 

Quantity...Size (in.)

 

 

 

1...20 x 25 x 1

 

 

 

 

 

 

 

 

1...16 x 25 x 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RETURN-AIR FILTERS

 

 

 

 

Throwaway

 

 

 

 

 

Quantity...Size (in.)

 

 

4...16 x 20 x 2

4...20 x 20 x 2

 

4...20 x 20 x 2

4...20 x 20 x 2

LEGEND

Bhp — Brake Horsepower

*Single phase/three phase. †Indicates automatic reset.

**180,000 Btuh heat input units have 2 burners.

224,000 Btuh heat input units and 250,000 Btuh Heat input units have 3 burners.

††An LP kit is available as an accessory.

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Bryant 581A/B manual 150, Med

581A/B specifications

The Bryant 581A/B is a sophisticated rooftop unit designed for commercial heating and cooling applications, striking a balance between performance, efficiency, and versatility. This unit is engineered to cater to various building sizes and configurations, making it an excellent choice for businesses seeking reliable climate control solutions.

One of the standout features of the Bryant 581A/B is its high efficiency. With SEER ratings reaching up to 14.5, this unit can significantly reduce energy costs while providing optimal performance throughout its operational lifespan. The design incorporates advanced compressor technology, allowing for variable speed operation that not only enhances comfort but also promotes energy savings by adjusting to the real-time demands of the environment.

The Bryant 581A/B also integrates cutting-edge refrigerant technology. Utilizing Puron refrigerant, it adheres to current environmental standards, minimizing its impact on ozone depletion while maximizing cooling performance. This commitment to sustainability is complemented by energy-efficient components, including high-efficiency coils and fan motors, which further optimize energy consumption.

In terms of construction, the Bryant 581A/B is built to withstand the rigors of outdoor installation. The unit features a rugged cabinet design with durable, corrosion-resistant materials, ensuring long-term reliability even in challenging weather conditions. Additionally, the easily accessible components simplify maintenance, reducing downtime for businesses.

The functionality of the Bryant 581A/B extends beyond mere cooling and heating. It is equipped with advanced control systems that can be interfaced with building management systems, allowing for seamless integration and enhanced control over indoor climate. This technology provides operators with the ability to monitor and adjust settings remotely, ensuring a comfortable indoor environment while optimizing energy use.

Noise reduction is another important characteristic of the Bryant 581A/B. The unit is designed with sound-dampening features, making it suitable for applications where low noise levels are a priority, such as retail spaces or office buildings.

Overall, the Bryant 581A/B is a robust solution for businesses seeking efficient, reliable, and flexible climate control. Its combination of advanced technology, durable construction, and user-friendly features make it a leading choice in the commercial HVAC market.