Bryant 581B Gas Heater User Manual


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97
PERFORMANCE DATA (cont)
COOLING CAPACITIES, STANDARD UNITS (cont)
Standard Ratings
LEGEND
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
Where: h
ewb
= Enthalpy of air entering evaporator coil.
3. The SHC is based on 80 F edb temperature of air entering evaporator 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).
581B072 (6 TONS)
Temp (F)
Air Ent
Condenser
(Edb)
Air Entering Evaporator — Cfm/BF
1800/0.05 2100/0.06 2400/0.06 3000/0.08
Air Entering Evaporator — Ewb (F)
72 67 62 72 67 62 72 67 62 72 67 62
75
TC 86.7 80.7 74.4 88.8 82.7 76.6 90.5 84.4 78.2 92.6 86.3 81.0
SHC 43.0 53.7 63.8 45.0 57.4 68.9 47.2 61.2 73.6 51.2 67.4 80.7
kW 4.58 4.46 4.33 4.63 4.50 4.38 4.67 4.55 4.41 4.72 4.58 4.47
85
TC 84.1 78.2 72.0 86.4 80.3 74.1 88.2 81.7 75.7 90.2 84.0 78.8
SHC 42.0 52.6 62.7 44.5 56.6 68.0 46.8 60.2 72.5 50.6 67.4 78.7
kW 5.10 4.97 4.85 5.16 5.03 4.90 5.21 5.06 4.93 5.26 5.12 4.99
95
TC 81.3 75.3 69.2 83.4
77.3 71.3 85.1 78.9 72.9 87.2 80.6 76.2
SHC 41.0 51.4 61.4 43.4 55.3 66.6 45.8 59.2 71.2 50.2 65.8 76.2
kW 5.65 5.52 5.39 5.71
5.57 5.44 5.77 5.62 5.48 5.83 5.66 5.55
105
TC 77.9 72.0 66.1 80.0 73.8 68.0 81.6 75.3 69.6 83.4 77.1 73.2
SHC 39.7 50.2 60.0 42.2 54.0 65.2 44.6 57.8 69.3 49.0 64.5 73.2
kW 6.22 6.08 5.94 6.29 6.13 6.00 6.34 6.17 6.04 6.40 6.22 6.12
115
TC 74.7 68.4 61.8 75.9 70.0 64.1 77.6 71.3 66.5 78.7 73.0 70.1
SHC 38.7 48.8 58.1 40.8 52.6 63.2 43.3 56.4 66.4 46.9 63.2 70.0
kW 6.84 6.68 6.49 6.87 6.71 6.56 6.93 6.75 6.63 6.96 6.80 6.72
125
TC 70.3 63.6 57.2 71.8 65.5 59.1 72.9 66.8 61.9 74.0 68.6 66.4
SHC 37.2 47.0 55.8 39.5 51.0 59.1 41.7 55.0 61.9 45.4 61.8 66.3
kW 7.43 7.25 7.03 7.48 7.30 7.13 7.51 7.35 7.22 7.54 7.41 7.33
581B090 (7
1
/
2
TONS)
Temp (F)
Air Ent
Condenser
(Edb)
Air Entering Evaporator — Cfm/BF
2250/0.10 3000/0.11 3750/0.14
Air Entering Evaporator — Ewb (F)
72 67 62 72 67 62 72 67 62
75
TC 105.5 96.9 87.6 107.3 99.6 90.7 110.3 101.9 93.8
SHC 50.6 63.6 75.7 53.3 69.2 83.7 58.0 76.6 92.2
kW 5.15 5.07 5.04 5.16 5.11 5.06 5.20 5.13 5.07
85
TC 102.5 93.6 83.6 105.1 96.5 87.5 107.7 99.0 90.6
SHC 49.7 62.4 73.9 52.8 68.4 82.2 57.3 75.9 90.0
kW 5.86 5.79 5.73 5.89 5.82 5.77 5.93 5.86 5.78
95
TC 98.9 90.1 79.3 101.6
92.9 83.5 103.8 95.3 87.4
SHC 48.5 61.2 71.9 51.9 67.2 80.2 56.2 74.9 87.3
kW 6.65 6.58 6.49 6.69
6.61 6.53 6.72 6.64 6.57
105
TC 95.3 86.2 75.7 97.6 88.8 79.6 100.0 91.0 84.1
SHC 47.3 59.6 70.2 50.7 65.9 78.0 55.3 73.6 84.1
kW 7.51 7.44 7.31 7.55 7.48 7.36 7.59 7.50 7.41
115
TC 91.0 82.0 71.6 93.2 84.5 75.4 95.6 86.6 80.7
SHC 45.9 58.0 68.1 49.3 64.2 75.3 54.2 72.1 80.7
kW 8.43 8.33 8.20 8.46 8.37 8.27 8.52 8.42 8.34
125
TC 86.2 77.8 68.1 88.3 80.0 71.9 90.0 81.9 77.2
SHC 44.1 56.4 66.3 47.5 62.6 71.8 52.1 70.1 77.2
kW 9.38 9.29 9.14 9.43 9.34 9.24 9.47 9.38 9.32
581B102 (8
1
/
2
TONS)
Temp (F)
Air Ent
Condenser
(Edb)
Air Entering Evaporator — Cfm/BF
2550/0.11 3000/0.12 3400/0.13 4250/0.17
Air Entering Evaporator — Ewb (F)
57 62 67 72 57 62 67 57 62 67 72 57 62 67 72 57
75
TC 94.6 101.0 110.0 119.2 100.4 104.4 113.4 121.8 104.2 106.8 115.8 123.4 109.8 111.0 119.0 125.8
SHC 94.6 84.4 69.4 54.4 100.4 92.4 75.0 57.2 104.2 99.0 80.0 59.8 109.8 110.4 89.4 64.2
kW 5.72 5.76 5.76 5.82 5.74 5.76 5.80 5.86 5.74 5.76 5.82 5.88 5.76 5.78 5.84 5.90
85
TC 91.0 97.4 106.8 115.8 97.4 101.0 110.0 119.6 101.2 103.0 112.0 121.6 108.0 108.0 116.0 123.4
SHC 91.0 83.0 68.8 53.2 97.4 91.2 74.2 57.0 101.2 97.6 78.8 59.6 108.0 108.0 89.4 64.2
kW 6.46 6.5 6.52 6.58 6.50 6.52 6.54 6.60 6.50 6.52 6.54 6.64 6.54 6.54 6.60 6.64
95
TC 85.2 91.4 103.0 112.8 93.4 96.6
106.2 116.0 98.2 99.2 108.4 117.8 104.6 104.6 111.6 121.2
SHC 85.2 80.4 67.2 52.6 93.4 89.4
73.0 55.8 98.2 96.2 78.2 58.8 104.6 104.6 88.0 64.6
kW 7.24 7.28 7.36 7.42 7.30 7.32
7.38 7.44 7.34 7.36 7.4 7.46 7.36 7.36 7.42 7.50
105
TC 80.0 82.2 98.6 108.6 87.0 87.8 101.6 111.8 93.4 93.6 103.8 114.0 101.0 100.8 106.8 116.6
SHC 80.0 76.6 65.6 51.2 87.0 85.6 71.6 54.8 93.4 93.2 76.6 57.8 101.0 100.8 86.8 63.6
kW 8.08 8.12 8.26 8.32 8.16 8.16 8.28 8.36 8.20 8.20 8.3 8.38 8.28 8.28 8.30 8.40
115
TC 73.6 74.6 89.4 103.4 81.0 81.2 95.2 106.4 86.2 86.2 98.4 108.4 96.4 96.4 101.6 111.8
SHC 73.6 73.0 62.2 49.6 81.0 81.2 69.4 53.0 86.2 86.2 75.0 56.4 96.4 96.4 85.4 62.8
kW 9.00 9.00 9.16 9.28 9.08 9.08 9.22 9.30 9.14 9.14 9.26 9.34 9.22 9.22 9.30 9.38
125
TC 68.6 68.6 80.2 98.2 74.4 74.4 84.0 101.0 79.2 79.2 86.8 102.8 88.0 88.0 93.8 105.6
SHC 68.6 68.6 59.0 48.0 74.4 74.4 65.4 51.6 79.2 79.2 71.0 54.6 88.0 88.0 82.8 61.0
kW 9.98 9.98 10.14 10.32 10.06 10.06 10.18 10.36 10.14 10.14 10.22 10.38 10.24 10.24 10.28 10.42
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
t
ldb
=t
edb
–
sensible capacity (Btuh)
1.10 x cfm
t
lwb
= Wet-bulb temperature corresponding to enthalpy of
air leaving evaporator coil (h
lwb
)
h
lwb
=h
ewb
–
total capacity (Btuh)
4.5 x cfm
581B036-150
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