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