Bryant 580D Product Information Manual page 27

Commercial single package rooftop gas heating/electric cooling units 3 to 25 tons
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580D090 (7
1
TONS)
2
Temp (F)
2250/0.07
Air Entering
Condenser
(Edb)
72
67
62
TC
102.8 94.8 86.2 105.8 98.2 90.0 106.4 99.0 90.8 109.2 101.6 93.6
75
SHC
49.4 61.8 73.2
kW
7.14 6.82 6.50
TC
98.2 90.2 81.6 101.8 93.6 85.2 102.6 94.4 86.0 104.6
85
SHC
48.0 60.2 71.2
kW
7.66 7.34 7.00
TC
93.8 85.2 76.6
95
SHC
46.4 58.2 68.8
kW
8.18 7.84 7.48
TC
88.4 79.8 70.8
105
SHC
44.6 56.2 66.0
kW
8.68 8.30 7.98
TC
82.8 73.8 66.0
115
SHC
42.6 53.8 63.2
kW
9.16 8.78 8.42
580D102 (8
1
TONS)
2
Temp (F)
2550/0.08
Air Entering
Condenser
(Edb)
72
67
TC
116.6 108.4 99.0 119.2 111.3 101.8 120.1 112.8 103.6 122.3 114.8 106.3
75
SHC
71.9
61.9 75.9
kW
7.77
7.57 7.38
TC
113.3 104.2 94.0 115.7 106.9
85
SHC
54.0
67.7 80.4
kW
8.46
8.22 7.96
TC
109.1
99.3 87.3 111.2 102.0
95
SHC
52.6
65.9 77.4
kW
8.90
8.97 8.68
TC
103.3
94.0 81.4 105.9
105
SHC
50.5
54.0 74.5
kW
9.74
9.43 9.08
TC
97.7
87.9 75.9
115
SHC
48.7
61.7 71.9
kW
10.33
9.97 9.61 10.46 10.10
Standard Ratings
LEGEND
BF
— Bypass Factor
Edb — Entering Dry-Bulb
Ewb — Entering Wet-Bulb
kW
— Compressor Motor Power Input
Ldb — Leaving Dry-Bulb
Lwb — Leaving Wet-Bulb
SHC — Sensible Heat Capacity (1000 Btuh) Gross
TC
— Total Capacity (1000 Btuh) Gross
PERFORMANCE DATA (cont)
COOLING CAPACITIES (cont)
Air Entering Evaporator — Cfm/BF
2800/0.09
3000/0.10
Air Entering Evaporator — Ewb (F)
72
67
62
72
67
52.6 67.8 81.6
53.6 69.8 84.0
7.28 6.98 6.68
7.32 7.04 6.72
51.6 66.4 79.6
52.8 68.6 82.0
7.82 7.50 7.18
7.86 7.54 7.22
97.0 88.4 80.0
97.6 89.0 81.2
50.2 64.6 77.2
51.4 66.8 79.0
8.36 8.00 7.64
8.40 8.04 7.70
91.0 82.8 74.6
91.6 83.4 76.0
48.2 62.6 74.2
49.4 64.8 75.6
8.80 8.46 8.14
8.86 8.50 8.20
85.2 76.8 69.6
85.6 77.4 71.0
46.4 60.4 69.6
47.8 62.6 71.0
9.30 8.92 8.64
9.34 8.96 8.72
Air Entering Evaporator — Cfm/BF
3000/0.10
Air Entering Evaporator — Ewb (F)
62
72
67
62
72
75.2
65.1
81.4
80.5
7.86 10.68
7.44
7.89
97.0 117.2 108.7
56.3
72.5
87.1
58.2
5.54
8.31
8.04
8.60
91.4 112.5 103.6
55.0
70.9
84.9
57.1
8.99
9.06
8.79
9.06
96.3
84.6 107.4
53.5
69.1
81.4
55.8
9.85
9.54
9.21
9.92
99.9
90.4
78.8 101.3
51.8
66.9
78.1
54.0
9.75 10.54 10.18
3750/0.12
62
72
67
62
58.2
77.4 92.2
7.46
7.18 6.86
96.8 89.6
56.8
76.0 89.4
7.98
7.68 7.40
99.4
91.2 85.2
55.6
74.4 85.2
8.50
8.16 7.92
93.8
85.4 80.6
54.2
72.4 80.6
8.98
8.64 8.42
87.6
79.4 76.0
52.8
70.4 75.8
9.48
9.10 8.94
3400/0.11
4250/0.135
67
62
72
67
68.0
85.6
32.7
73.9
6.72
7.51
7.97
7.80
98.8 120.1 111.0 101.8
76.4
92.5
62.9
84.2 101.0
8.38
8.12
8.72
8.48
93.7 115.3 105.8 107.4
75.1
90.3
62.2
83.2
9.12
8.86
4.76
9.24
97.7
87.9 109.4
99.9
73.1
86.6
60.4
81.4
9.60
9.29 10.03
9.72
91.8
82.4 102.9
93.8
71.2
82.3
58.5
79.4
9.88 10.61 10.30 10.10
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
t ldb = t edb −
t lwb = Wet-bulb temperature corresponding to enthalpy of air leav-
ing evaporator coil (h lwb )
h lwb = h ewb −
Where: h ewb = 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).
27
62
94.4
7.60
8.23
97.3
9.00
92.8
92.8
9.48
88.3
88.2
sensible capacity (Btuh)
1.10 x cfm
total capacity (Btuh)
4.5 x cfm

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