Manuals / Bryant / Household Appliance / Heating System

Bryant 581A/B manual 157

Models: 581A/B

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PERFORMANCE DATA — 579F (cont)

 

 

 

 

 

 

 

COOLING CAPACITIES (cont)

 

 

 

 

 

 

 

 

 

 

579F240 (20 Tons) (cont)

 

 

 

 

 

 

 

 

 

Temp (F)

 

 

Evaporator Air Quantity — Cfm

 

 

 

 

 

 

 

10,000

 

 

 

 

 

Air Entering

 

 

 

 

 

 

 

 

 

Condenser

 

 

 

Evaporator Air — Ewb (F)/BF

 

 

 

(Edb)

 

 

 

 

 

 

 

 

 

 

54/0.65

58/0.52

 

62/0.40

67/0.26

72/0.24

 

76/0.24

80/0.04

 

 

 

 

 

 

 

TC

250

250

 

256

267

294

 

314

—

 

75

SHC

250

250

 

227

200

161

 

127

—

 

 

kW

15.8

15.8

 

15.9

16.1

16.7

 

17.1

—

 

 

TC

243

244

 

249

262

284

 

303

—

 

85

SHC

243

244

 

220

198

158

 

124

—

 

 

kW

17.6

17.8

 

17.7

18.0

18.5

 

18.9

—

 

 

TC

236

236

 

241

252

274

 

292

—

 

95

SHC

236

236

 

212

194

154

 

121

—

 

 

kW

19.5

19.5

 

19.7

19.9

20.4

 

20.9

—

 

 

TC

228

228

 

234

242

263

 

281

—

 

105

SHC

228

228

 

203

190

151

 

117

—

 

 

kW

21.6

21.6

 

21.8

22.0

22.5

 

22.9

—

 

 

TC

220

220

 

223

232

251

 

268

—

 

115

SHC

220

220

 

207

186

147

 

113

—

 

 

kW

23.9

23.9

 

23.9

24.2

24.7

 

25.2

—

 

 

TC

218

218

 

221

230

249

 

266

—

 

117

SHC

218

218

 

205

185

146

 

112

—

 

 

kW

24.3

24.3

 

24.4

24.7

25.2

 

25.6

—

 

 

TC

215

215

 

218

226

245

 

—

—

 

120

SHC

215

215

 

203

183

145

 

—

—

 

 

kW

25.1

25.1

 

25.1

25.4

25.9

 

—

—

 

 

 

LEGEND

3. The SHC is based on 80 F edb temperature of air entering evaporator coil.

BF

—

Bypass Factor

 

Below 80 F edb, subtract (corr factor x cfm) from SHC.

 

 

Above 80 F edb, add (corr factor x cfm) to SHC.

 

 

Edb

—

Entering Dry-Bulb

 

 

 

 

 

 

 

 

 

 

 

Ewb

—

Entering Wet-Bulb

 

 

 

ENTERING AIR DRY-BULB TEMP (F)

kW

— Compressor Motor Power Input

 

BYPASS

 

ldb

—

Leaving Dry-Bulb

 

79

78

77

76

75

under 75

lwb

—

Leaving Wet-Bulb

 

FACTOR

 

 

 

 

 

 

 

81

82

83

84

85

over 85

 

(BF)

SHC

—

Sensible Heat Capacity (1000 Btuh) Gross

 

 

 

 

 

Correction Factor

 

TC

—

Total Capacity (1000 Btuh) Gross

 

 

 

 

 

NOTES:

 

 

 

 

 

 

0.05

1.04

2.07

3.11

4.14

5.18

 

 

 

 

 

 

 

0.10

0.98

1.96

2.94

3.92

4.91

 

1.

Direct interpolation is permissible. Do not extrapolate.

 

 

2.

The following formulas may be used:

 

0.20

0.87

1.74

2.62

3.49

4.36

 

 

tldb =

tedb –

 

sensible capacity (Btuh)

 

 

0.30

0.76

1.53

2.29

3.05

3.82

Use formula

 

 

1.10 x cfm

 

0.40

0.65

1.31

1.96

2.62

3.27

shown below.

 

 

 

 

 

 

 

 

 

 

 

 

 

0.50

0.55

1.09

1.64

2.18

2.73

 

 

tlwb =

Wet-bulb temperature corresponding to enthalpy of air

 

0.60

0.44

0.87

1.31

1.74

2.18

 

 

leaving evaporator coil (hlwb)

 

0.70

0.33

0.65

0.98

1.31

1.64

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

hlwb =

hewb –

total capacity (Btuh)

 

 

Interpolation is permissible.

 

 

 

 

 

4.5 x cfm

 

 

 

 

 

 

 

 

 

 

Correction Factor = 1.10 x (1 – BF) x (edb – 80).

 

 

 

 

 

 

 

 

 

 

 

 

Where: hewb = Enthalpy of air entering evaporator coil

579F180-300

157

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Page 157
Image 157
Bryant 581A/B manual 157
Page 156 Page 158

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.