Specifications

22
PERFORMANCE DATA (cont)
COOLING CAPACITIES, UNITS WITH PERFECT HUMIDITY™ OPTION (cont)
Do not operate at these conditions.
LEGEND
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
where h
ewb
= enthalpy of air entering indoor coil
3. The SHC is based on 80 F edb temperature of air entering evap-
orator coil.
Below 80 F db, subtract (corr factor x cfm) from SHC.
Above 80 F db, add (corr factor x cfm) to SHC
.
Correction Factor = 1.10 x (1 – BF) x (db – 80)
551B090 (7
1
/
2
TONS)
TEMP (F)
AIR ENT
CONDENSER
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
2250/0.095 3000/0.110 3750/0.135
Temp (F) Air Entering Evaporator — Ewb
78 72 67 62 78 72 67 62 78 72 67 62
75
TC
104.4 98.4 91.1 81.1 109.5 103.7 97.9 91.8 110.0 105.8 101.3 94.1
SHC
31.1 44.5 55.4 67.0 34.0 50.4 65.4 80.5 36.5 54.5 72.4 89.5
kW
5.10 5.05 4.96 4.87 5.40 5.09 5.04 4.97 5.69 5.16 5.04 4.99
85
TC
99.9 94.2 85.8 76.9 106.8 100.3 92.4 85.2 109.6 103.5 96.8 89.0
SHC
27.4 39.7 51.3 62.7 30.9 46.2 58.3 75.7 31.5 50.6 68.2 84.3
kw
5.79 5.74 5.65 5.55 6.12 5.81 5.75 5.64 6.45 5.89 5.74 5.70
95
TC
97.6 89.9 80.5 72.6 104.2 96.9 86.8 78.6 107.9 101.1 92.2 83.8
SHC
24.4 34.8 47.2 58.3 27.7 41.9 51.2 71.0 28.9 46.6 63.9 79.1
kW
6.53 6.42 6.33 6.22 6.83 6.52 6.45 6.31 7.17 6.62 6.43 6.40
105
TC
91.7 84.6 75.3 68.0
91.6 81.3 73.4 94.5 86.3 78.4
SHC
20.7 30.0 42.5 53.9
36.9 49.3 66.4 41.4 59.2 73.8
kW
7.34 7.26 7.16 7.05
7.36 7.25 7.15 7.46 7.29 7.23
115
TC
79.2 70.1 63.3 86.2 75.8 68.1 87.9 80.3 72.9
SHC
25.2 37.8 49.4 31.9 47.4 61.9 36.1 54.4 68.5
kW
8.10 7.99 7.87 8.20 8.05 7.98 8.30 8.14 8.05
125
TC
72.8 64.5 57.2 78.0 69.8 62.3 81.6 73.2 69.2
SHC
20.1 33.4 44.1 25.4 42.5 56.5 31.1 48.9 64.7
kW
9.10 8.94 8.83 9.23 9.05 8.95 9.26 9.10 8.99
551B102 (8
1
/
2
TONS)
TEMP (F)
AIR ENT
CONDENSER
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
2550/0.075 3000/0.09 3400/0.105 4250/0.125
Temp (F) Air Entering Evaporator — Ewb
78 72 67 62 78 72 67 62 78 72 67 62 78 72 67 62
75
TC
120.5 112.4 102.2 92.6 121.5 115.2 106.4 96.4 124.9 119.6 110.3 101.3 132.7 127.6 117.6 108.0
SHC
32.5 49.1 62.4 75.0 33.2 52.9 68.5 82.3 34.2 56.2 73.3 89.5 38.0 62.8 83.3 101.7
kW
6.16 6.10 5.96 5.86 6.41 6.18 6.05 5.95 6.53 6.18 6.05 5.95 6.83 6.18 6.10 6.00
85
TC
114.2 105.7 95.7 86.5 116.7 110.0 100.6 91.0 120.3 114.0 103.7 94.6 124.0 120.3 110.9 101.2
SHC
28.8 43.6 57.1 69.9 29.9 47.8 62.8 76.9 30.4 50.7 67.9 82.8 44.8 58.5 77.7 98.4
kW
6.99 6.92 6.78 6.63 7.20 6.97 6.90 6.75 7.37 7.01 6.85 6.75 7.68 7.01 6.91 6.80
95
TC
108.0 98.9 89.1 80.4 112.4 104.7 94.8 85.5 115.0 108.4 97.0 87.9
113.0 104.1 94.3
SHC
25.1 38.0 51.7 64.8 26.8 42.7 57.0 71.4 27.2 45.2 62.4 76.2 54.3 72.0 87.9
kW
7.85 7.73 7.59 7.40 8.03 7.75 7.75 7.56 8.21 7.84 7.65 7.54
7.84 7.71 7.60
105
TC
100.2 91.8 82.3 73.8
97.3 87.6 78.6 100.4 89.8 80.8 105.1 95.3 85.8
SHC
20.9 32.6 46.3 59.5 37.0 51.9 66.8 39.3 56.7 70.0 47.1 65.5 80.9
kW
8.91 8.80 8.64 8.47
8.80 8.76 8.58 8.89 8.69 8.59 8.93 8.77 8.67
115
TC
84.7 75.5 67.3 89.8 80.5 71.7 82.5 82.5 73.8 97.2 86.6 77.4
SHC
27.2 40.9 54.2 31.4 46.9 62.2 33.4 51.0 63.8 39.9 59.1 73.9
kW
9.86 9.69 9.53 9.86 9.77 9.61 9.95 9.74 9.65 10.01 9.84 9.75
125
TC
77.6 68.7 60.7 82.4 73.3 64.8 84.5 75.3 66.7 89.3 77.8 68.9
SHC
21.8 35.5 48.9 25.7 41.8 57.6 27.5 45.3 57.6 32.7 52.6 66.9
kW
10.93 10.74 10.60 10.91 10.78 10.64 11.00 10.78 10.70 11.10 10.90 10.82
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 heat capacity (Btuh)
1.1 x cfm
t
lwb
= wet-bulb temperature corresponding to enthalpy of air
leaving indoor coil (h
lwb
)
h
lwb
=h
ewb
–
total capacity (Btuh)
4.5 x cfm