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PERFORMANCE DATA — 548F (cont)
COOLING CAPACITIES (cont)
548F072 (6 TONS)
Temp (F)
Outdoor
Entering Air
(Edb)
Indoor Entering Air — Cfm/BF
1800/0.10 2400/0.13 3000/0.19
Indoor Entering Air — Ewb (F)
72 67 62 72 67 62 72 67 62
75
TC 81.1 77.6 72.1 84.0 80.3 75.2 84.2 81.1 77.8
SHC 36.2 46.9 57.0 39.1 52.4 65.4 40.8 56.2 72.2
kW 5.16 5.11 5.01 5.23 5.16 5.06 5.23 5.17 5.11
85
TC 80.7 75.8 70.0 83.9 79.3 73.4 84.1 80.8 76.2
SHC 36.1 46.5 56.4 39.7 52.9 65.2 41.6 58.3 71.9
kW 5.83 5.74 5.65 5.90 5.81 5.69 5.90 5.84 5.76
95
TC 79.3 73.0 67.3 82.0 76.7 70.8 83.0 79.1 73.5
SHC 35.8 45.4 55.3 39.3 52.3 64.3 42.2 58.9 69.7
kW 6.54 6.37 6.28 6.60 6.47 6.37 6.62 6.55 6.40
105
TC 76.0 70.6 64.3 79.6 73.4 67.9 80.7 75.5 71.3
SHC 34.6 44.8 54.1 38.8 51.2 62.9 42.0 57.6 67.8
kW 7.21 7.12 6.94 7.34 7.15 7.06 7.36 7.22 7.14
115
TC 72.7 67.5 61.1 75.8 70.6 64.7 77.9 71.8 68.5
SHC 33.6 43.7 52.7 37.6 50.7 60.9 41.5 56.4 65.2
kW 7.95 7.86 7.63 8.06 7.95 7.77 8.14 7.94 7.90
125
TC 70.1 63.9 57.6 71.8 66.9 61.6 73.5 68.6 65.4
SHC 32.9 42.4 51.2 36.4 49.5 58.4 40.2 56.1 62.3
kW 8.82 8.62 8.37 8.83 8.73 8.54 8.89 8.79 8.69
548F090 (7
1
/
2
TONS)
Temp (F)
Outdoor
Entering Air
(Edb)
Indoor Entering Air — Cfm/BF
2250/0.04 3000/0.06 3200/0.08 3750/0.11
Indoor Entering Air — Ewb (F)
72 67 62 72 67 62 72 67 62 72 67 62
75
TC 109.8 101.4 92.2 116.2 107.0 98.0 117.6 108.8 100.2 118.8 110.4 102.4
SHC 44.2 57.4 69.4 49.6 66.0 82.0 51.8 69.8 87.0 54.0 74.0 92.0
kW 6.66 6.44 6.18 6.86 6.60 6.36 6.92 6.66 6.42 6.94 6.70 6.48
85
TC 105.2 96.4 87.0 111.4 102.2 92.6 113.0 104.0 95.0 114.6 105.8 97.6
SHC 42.8 55.6 67.6 48.4 65.0 80.0 50.8 69.0 84.4 53.4 73.8 88.8
kW 7.20 6.94 6.64 7.42 7.14 6.82 7.48 7.20 6.90 7.54 7.28 7.00
95
TC 100.6 91.0 82.0 105.6 96.2 87.4 107.2 98.0 89.8 108.6 99.6 92.8
SHC 41.6 54.0 65.8 47.0 63.2 77.8 49.4 67.4 81.4 52.0 72.2 84.6
kW 7.78 7.42 7.08 7.96 7.62 7.30 8.00 7.70 7.40 8.06 7.76 7.50
105
TC 94.8 85.4 76.8 99.8 90.2 82.2 101.4 91.6 85.0 103.2 93.2 88.0
SHC 40.0 52.2 63.8 45.6 61.6 74.6 48.2 65.8 77.6 51.2 70.4 80.4
kW 8.26 7.88 7.50 8.48 8.10 7.76 8.56 8.18 7.88 8.64 8.24 8.02
115
TC 88.8 79.9 71.4 93.4 84.0 77.6 94.8 85.4 80.0 96.0 86.6 83.0
SHC 38.4 50.4 61.6 44.2 59.8 70.6 46.6 64.0 73.2 49.4 68.6 75.8
kW 8.76 8.32 7.90 8.98 8.54 8.22 9.04 8.62 8.36 9.10 8.70 8.50
125
TC 82.6 73.8 65.8 86.6 77.4 74.4 88.0 78.8 75.0 89.2 80.0 77.6
SHC 36.8 48.6 59.2 42.2 57.8 66.2 45.2 62.0 68.6 48.2 66.6 71.0
kW 9.20 8.74 8.30 9.44 8.96 8.68 9.52 9.02 8.82 9.60 9.12 8.98
LEGEND
NOTES:
1. Direct interpolation is permissible. Do
not extrapolate.
2. The following formulas may be used:
t
lwb
= Wet-bulb temperature corre-
sponding to enthalpy of air
leaving indoor coil (h
lwb
)
Where: h
ewb
= Enthalpy of air enter-
ing evaporator coil
3. The SHC is based on 80 F edb tem-
perature of air entering indoor coil.
Below 80 F edb, subtract (corr factor
x cfm) from SHC.
Above 80 F edb, add (corr factor x
cfm) to SHC.
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
t
ldb
=t
edb
–
sensible capacity (Btuh)
1.10 x cfm
h
lwb
= h
ewb
–
total capacity (Btuh)
4.5 x cfm
548F