PERFORMANCE DATA (cont)

COOLING CAPACITIES — UNITS WITH PERFECT HUMIDITY™ ADAPTIVE DEHUMIDIFICATION SYSTEM OPTION (cont)

 

 

 

 

581B102 (81/2 TONS) — SUBCOOLING MODE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Temp (F)

 

 

 

 

 

 

 

 

 

 

 

 

Air Entering Evaporator — Cfm/BF

 

 

 

 

 

 

 

 

 

 

 

 

Air Ent

 

 

 

 

2550/0.08

 

 

 

 

3000/0.09

 

 

 

 

3400/0.11

 

 

 

 

4250/0.13

 

 

 

 

 

Condenser

 

 

 

 

 

 

 

 

 

 

 

 

Air Entering Evaporator — Ewb (F)

 

 

 

 

 

 

 

 

 

 

 

 

(Edb)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

72

 

 

67

 

62

 

72

 

67

 

62

 

72

 

67

 

62

 

72

 

67

62

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75

 

 

TC

 

114.1

 

104.1

 

97.8

116.3

 

108.5

 

103.4

 

117.6

 

111.9

 

108.0

 

122.2

 

118.9

111.4

 

 

 

 

 

 

SHC

 

49.8

 

 

64.2

 

81.2

52.6

 

70.8

 

89.0

 

55.4

 

76.9

 

95.4

 

62.0

 

87.0

107.2

 

 

 

 

 

 

 

kW

 

5.57

 

 

5.46

 

5.44

5.59

 

5.50

 

5.44

 

5.60

 

5.51

 

5.44

 

5.62

 

5.62

5.69

 

 

 

 

85

 

 

TC

 

107.3

 

98.4

 

92.6

111.0

 

101.8

 

98.0

 

113.0

 

104.2

 

102.0

 

117.1

 

111.4

106.1

 

 

 

 

 

 

SHC

 

42.2

 

 

58.3

 

76.0

47.1

 

64.5

 

83.5

 

51.2

 

70.2

 

89.2

 

57.3

 

81.2

101.2

 

 

 

 

 

 

 

kW

 

6.32

 

 

6.30

 

6.15

6.32

 

6.27

 

6.18

 

6.34

 

6.22

 

6.20

 

6.30

 

6.31

6.45

 

 

 

 

95

 

 

TC

 

101.9

 

92.4

 

86.8

105.3

 

95.5

 

92.8

 

107.4

 

97.7

 

96.5

 

112.1

 

103.7

100.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHC

 

35.4

 

 

51.9

 

70.3

40.1

 

58.5

 

77.9

 

44.9

 

64.9

 

83.7

 

52.1

 

74.0

94.8

 

150

 

 

 

 

 

kW

 

7.06

 

 

7.13

 

6.93

7.06

 

7.06

 

6.95

 

7.06

 

6.99

 

6.98

 

7.01

 

7.04

7.17

 

 

 

105

 

 

TC

 

94.5

 

 

85.4

 

77.0

97.6

 

88.3

 

82.4

 

99.9

 

90.6

 

88.0

 

104.1

 

96.1

94.0

 

581B036-

 

 

 

 

SHC

 

29.7

 

 

45.7

 

63.2

33.9

 

52.2

 

70.1

 

38.0

 

58.3

 

75.7

 

44.4

 

67.6

88.5

 

 

 

 

 

kW

 

8.91

 

 

8.83

 

8.66

8.93

 

8.86

 

8.76

 

8.97

 

8.86

 

8.84

 

8.91

 

8.93

8.90

 

 

 

 

 

 

 

kW

 

7.99

 

 

8.00

 

7.81

8.01

 

7.97

 

7.85

 

8.02

 

7.94

 

7.89

 

7.96

 

7.96

8.08

 

 

 

 

115

 

 

TC

 

86.4

 

 

75.0

 

68.3

89.3

 

80.2

 

74.1

 

91.4

 

83.2

 

78.4

 

96.5

 

88.4

87.1

 

 

 

 

 

 

SHC

 

24.0

 

 

38.7

 

56.4

27.4

 

45.6

 

62.9

 

31.1

 

51.9

 

67.0

 

37.0

 

60.8

81.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

125

 

 

TC

 

78.6

 

 

65.5

 

60.2

81.3

 

68.9

 

64.7

 

83.3

 

71.6

 

68.2

 

88.5

 

78.8

78.9

 

 

 

 

 

 

SHC

 

18.3

 

 

32.0

 

48.8

21.2

 

38.0

 

53.5

 

24.1

 

44.1

 

57.5

 

29.4

 

53.3

73.8

 

 

 

 

 

 

 

kW

 

9.81

 

 

9.65

 

9.53

9.86

 

9.68

 

9.64

 

9.89

 

9.71

 

9.75

 

9.90

 

9.72

9.88

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

581B102 (81/2 TONS) — HOT GAS REHEAT MODE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Air Entering Evaporator — Ewb (F)

 

 

 

 

 

 

 

 

 

 

Temp (F)

 

 

 

 

 

75 Dry Bulb

 

 

 

 

75 Dry Bulb

 

 

 

 

75 Dry Bulb

 

 

 

 

 

Air Ent

 

 

 

 

 

62.5 Wet Bulb

 

 

 

 

64 Wet Bulb

 

 

 

 

65.3 Wet Bulb

 

 

 

 

 

Condenser

 

 

 

 

 

(50% Relative)

 

 

 

 

(55% Relative)

 

 

 

 

(60% Relative)

 

 

 

 

 

(Edb)

 

 

 

 

 

 

 

 

 

 

 

 

 

Air Entering Evaporator — Cfm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2550

 

 

3000

 

3400

 

4250

 

2550

 

3000

 

3400

 

4250

 

2550

 

3000

 

3400

4250

 

 

 

 

 

 

 

TC

 

43.44

 

46.26

 

48.45

 

52.38

 

45.26

 

48.15

 

50.39

 

54.43

 

46.84

 

49.79

 

52.08

56.20

 

 

 

 

80

 

 

SHC

 

12.34

 

16.78

 

20.29

 

26.74

 

5.79

 

10.15

 

13.60

 

19.93

 

0.11

 

4.40

 

7.80

14.03

 

 

 

 

 

 

 

kW

 

6.31

 

 

6.31

 

6.31

 

6.31

 

6.05

 

6.05

 

6.05

 

6.05

 

5.83

 

5.83

 

5.83

5.83

 

 

 

 

 

 

 

TC

 

44.33

 

47.00

 

49.06

 

52.78

 

46.12

 

48.85

 

50.97

 

54.78

 

47.67

 

50.46

 

52.63

56.52

 

 

 

 

75

 

 

SHC

 

12.92

 

17.12

 

20.44

 

26.54

 

6.81

 

10.94

 

14.20

 

20.20

 

1.51

 

5.58

 

8.79

14.70

 

 

 

 

 

 

 

kW

 

6.38

 

 

6.38

 

6.8

 

6.38

 

6.15

 

6.15

 

6.15

 

6.15

 

5.95

 

5.95

 

5.95

5.95

 

 

 

 

 

 

 

TC

 

45.22

 

47.73

 

49.68

 

53.18

 

46.98

 

49.55

 

51.55

 

55.14

 

48.51

 

51.14

 

53.18

56.84

 

 

 

 

70

 

 

SHC

 

13.50

 

17.47

 

20.59

 

26.34

 

7.83

 

11.73

 

14.81

 

20.46

 

2.92

 

6.76

 

9.79

15.36

 

 

 

 

 

 

 

kW

 

6.46

 

 

6.46

 

6.46

 

6.46

 

6.25

 

6.25

 

6.25

 

6.25

 

6.07

 

6.07

 

6.07

6.07

 

 

 

 

 

 

 

TC

 

46.99

 

49.19

 

50.90

 

53.97

 

48.70

 

50.96

 

52.71

 

55.86

 

50.18

 

52.49

 

54.27

57.49

 

 

 

 

60

 

 

SHC

 

14.67

 

18.15

 

20.90

 

25.95

 

9.88

 

13.31

 

16.01

 

20.99

 

5.73

 

9.11

 

11.78

16.68

 

 

 

 

 

 

 

kW

 

6.60

 

 

6.60

 

6.60

 

6.60

 

6.45

 

6.45

 

6.45

 

6.45

 

6.32

 

6.32

 

6.32

6.32

 

 

 

 

 

 

 

TC

 

48.77

 

50.66

 

52.13

 

54.77

 

50.42

 

52.36

 

53.87

 

56.57

 

51.85

 

53.83

 

55.37

58.14

 

 

 

 

50

 

 

SHC

 

15.83

 

18.83

 

21.20

 

25.56

 

11.93

 

14.89

 

17.22

 

21.51

 

8.55

 

11.47

 

13.77

18.01

 

 

 

 

 

 

 

kW

 

6.74

 

 

6.74

 

6.74

 

6.74

 

6.64

 

6.64

 

6.64

 

6.64

 

6.56

 

6.56

 

6.56

6.56

 

 

 

 

 

 

 

TC

 

50.54

 

52.13

 

53.35

 

55.56

 

52.14

 

53.76

 

55.02

 

57.29

 

53.53

 

55.18

 

56.47

58.78

 

 

 

 

40

 

 

SHC

 

17.00

 

19.52

 

21.51

 

25.16

 

13.98

 

16.47

 

18.43

 

22.04

 

11.36

 

13.82

 

15.76

19.33

 

 

 

 

 

 

 

kW

 

6.88

 

 

6.88

 

6.88

 

6.88

 

6.84

 

6.84

 

6.84

 

6.84

 

6.81

 

6.81

 

6.81

6.81

 

LEGEND

2. The following formulas may be used:

BF

Bypass Factor

tldb

=

tedb

 

sensible capacity (Btuh)

 

Edb

Entering Dry Bulb

 

1.10 x cfm

Ewb

Entering Wet Bulb

tlwb

= Wet-bulb temperature corresponding to enthalpy of air

kW

Compressor Motor Power Input

SHC — Sensible Heat Capacity (1000 Btuh) Gross

 

 

leaving evaporator coil (hlwb)

TC

Total Capacity (1000 Btuh) Gross

hlwb

=

hewb

 

total capacity (Btuh)

 

NOTES:

 

4.5 x cfm

1.

Direct interpolation is permissible. Do not extrapolate.

Where: hewb =

Enthalpy of air entering evaporator coil.

3. The SHC is based on 80 F edb temperature of air entering evapo- rator coil.

Below 80 F edb, subtract (corr factor x cfm) from SHC. Above 80 F edb, add (corr factor x cfm) to SHC. Correction Factor = 1.10 x (1 – BF) x (edb – 80).

100

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Bryant 581A/B manual 581B102 81/2 Tons Subcooling Mode, 581B102 81/2 Tons HOT GAS Reheat Mode, Wet Bulb Condenser

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.

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