Bryant COMMERCIAL SINGLE PACKAGE ROOFTOP GAS HEAT/ELECTRIC COOLING 581B User Manual page 23

COOLING CAPACITIES, UNITS WITH PERFECT HUMIDITY™ OPTION (cont)
581B060 (5 TONS)
Temp (F)
Air Ent
Condenser
(Edb)
72
TC 69.9
75
SHC 29.0
kW 3.61
TC 65.9
85
SHC 25.3
kW 4.05
TC 61.9
95
SHC 21.6
kW 4.53
TC 57.7
105
SHC 18.1
kW 5.05
TC 53.4
115
SHC 14.7
kW 5.60
TC 48.7
125
SHC 10.9
kW 6.26
581B072 (6 TONS)
Temp (F)
Air Ent
Condenser
(Edb)
72
TC 82.6
75
SHC 36.0
kW 4.60
TC 78.2
85
SHC 31.4
kW 5.16
TC 73.8
95
SHC 27.0
kW 5.75
TC 68.4
105
SHC 22.3
kW 6.37
TC 63.4
115
SHC 18.1
kW 7.04
TC 55.5
125
SHC 15.3
kW 7.80
LEGEND
BF — Bypass Factor
Edb — Entering Dry Bulb
Ewb — Entering Wet Bulb
kW — Compressor Motor Power Input
SHC — Sensible Heat Capacity (1000 Btuh) Gross
TC — Total Capacity (1000 Btuh) Gross
PERFORMANCE DATA (cont)
Temp (F) Air Entering Evaporator — Cfm/BF
1500/0.08
Temp (F) Air Entering Evaporator — Ewb
67 62 72
62.7 56.2 74.7
36.9 43.9 31.7
3.55 3.51 3.64
59.1 51.7 70.6
34.0 41.9 27.5
3.97 3.91 4.07
55.2 47.7 66.5
31.1 40.0 23.5
4.43 4.35 4.55
51.1 44.9 61.8
27.8 35.7 20.0
4.93 4.84 5.09
47.2 42.0 56.6
24.6 31.5 16.5
5.49 5.40 5.64
42.0 36.9 51.3
19.6 28.0 12.5
6.12 6.02 6.28
Temp (F) Air Entering Evaporator — Cfm/BF
1800/0.05
Temp (F) Air Entering Evaporator — Ewb
67 62 72
75.6 68.5 84.9
44.8 55.4 37.5
4.52 4.36 4.67
71.6 64.5 80.9
41.2 51.7 33.0
5.03 4.89 5.22
67.4 60.2 76.3
37.6 47.9 28.2
5.60 5.44 5.80
62.6 55.9 71.4
33.5 43.5 23.4
6.22 6.06 6.45
57.8 50.7 66.0
29.5 38.9 18.8
6.89 6.68 7.10
49.6 45.8 58.4
24.0 35.2 15.7
7.61 7.38 7.83
1750/0.09
67 62 72
67.3 61.0 78.5
40.5 51.2 34.5
3.58 3.49 3.65
63.2 56.3 75.5
37.6 48.0 30.7
4.01 3.92 4.11
58.8 51.3 70.4
34.5 44.6 26.0
4.47 4.37 4.56
54.5 47.7 65.1
31.2 40.1 22.1
4.97 4.88 5.11
50.0 44.2 59.6
27.8 35.7 18.2
5.52 5.45 5.69
45.0 39.0 54.1
22.2 31.5 13.5
6.18 6.09 6.33
2100/0.06
67 62 72
78.0 70.9 85.9
49.1 59.7 38.8
4.57 4.46 4.70
73.4 65.8 82.0
44.7 55.8 34.7
5.11 4.96 5.26
68.3 60.5 77.5
40.0 51.6 30.2
5.66 5.48 5.84
64.3 56.2 72.1
36.5 48.0 25.4
6.27 6.10 6.46
60.1 51.5 66.4
32.9 44.1 20.7
6.91 6.74 7.12
52.4 46.1 57.6
27.5 39.0 17.5
7.67 7.49 7.89
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
leaving 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).
23
2000/0.11
67 62 72
71.2 64.8 81.7
44.2 55.4 37.8
3.60 3.51 3.62
66.8 60.7 78.1
41.6 52.0 33.8
4.00 3.95 4.08
61.9 55.7 74.2
38.6 47.9 30.0
4.42 4.41 4.58
57.2 50.8 68.4
34.3 43.5 26.1
4.96 4.92 5.11
52.5 46.2 62.6
30.0 39.0 22.1
5.55 5.48 5.69
46.8 40.9 56.9
24.0 34.0 16.5
6.18 6.13 6.33
2400/0.06
67 62 72
79.5 73.5 89.1
51.1 64.0 41.8
4.57 4.45 4.77
74.4 67.9 85.8
47.4 60.1 37.6
5.09 4.97 5.32
69.3 62.3 82.0
43.7 56.2 33.6
5.68 5.53 5.90
64.6 58.3 75.7
38.4 50.2 29.1
6.29 6.16 6.53
59.6 54.5 68.8
33.3 43.8 24.3
6.95 6.83 7.16
52.1 49.5 59.2
27.5 38.4 20.9
7.72 7.58 7.92
sensible capacity (Btuh)
1.10 x cfm
total capacity (Btuh)
4.5 x cfm
2500/0.13
67 62
75.5 69.3
52.0 62.8
3.58 3.51
70.8 65.1
47.4 58.0
4.02 3.96
65.9 60.6
42.8 52.6
4.49 4.44
60.3 56.1
38.9 48.5
5.03 4.98
54.9 51.6
34.9 44.3
5.61 5.57
49.2 45.9
28.0 38.8
6.27 6.22
3000/0.08
67 62
82.7 77.0
58.1 70.2
4.61 4.51
78.2 72.3
54.3 66.7
5.17 5.04
72.8 67.5
49.2 62.9
5.73 5.60
67.0 62.4
45.2 56.2
6.36 6.24
60.8 57.5
41.4 49.7
7.01 6.92
52.8 53.1
34.6 44.4
7.78 7.70