Specifications
21
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)
551B060 (5 TONS)
TEMP (F)
AIR ENT
CONDENSER
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
1500/0.08 1750/0.09 2000/0.11 2500/0.13
Temp (F) Air Entering Evaporator — Ewb
78 72 67 62 78 72 67 62 78 72 67 62 78 72 67 62
75
TC
79.4 69.9 62.7 56.2 85.0 74.7 67.3 61.0 90.0 78.5 71.2 64.8
81.7 75.5 69.3
SHC
21.8 29.0 36.9 43.9 23.2 31.7 40.5 51.2 24.7 34.5 44.2 55.4
37.8 52.0 62.8
kW
3.77 3.61 3.55 3.51 3.81 3.64 3.58 3.49 3.84 3.65 3.60 3.51
3.62 3.58 3.51
85
TC
75.1 65.9 59.1 51.7
70.6 63.2 56.3 75.5 66.8 60.7 78.1 70.8 65.1
SHC
18.9 25.3 34.0 41.9
27.5 37.6 48.0 30.7 41.6 52.0 33.8 47.4 58.0
kW
4.31 4.05 3.97 3.91
4.07 4.01 3.92 4.11 4.00 3.95 4.08 4.02 3.96
95
TC
75.6 61.9 55.2 47.7
66.5 58.8 51.3 70.4 61.9 55.7 74.2 65.9 60.6
SHC
24.1 21.6 31.1 40.0
23.5 34.5 44.6 26.0 38.6 47.9 30.0 42.8 52.6
kW
4.62 4.53 4.43 4.35
4.55 4.47 4.37 4.56 4.42 4.41 4.58 4.49 4.44
105
TC
57.7 51.1 44.9 61.8 54.5 47.7 65.1 57.2 50.8 68.4 60.3 56.1
SHC
18.1 27.8 35.7 20.0 31.2 40.1 22.1 34.3 43.5 26.1 38.9 48.5
kW
5.05 4.93 4.84 5.09 4.97 4.88 5.11 4.96 4.92 5.11 5.03 4.98
115
TC
53.4 47.2 42.0 56.6 50.0 44.2 59.6 52.5 46.2 62.6 54.9 51.6
SHC
14.7 24.6 31.5 16.5 27.8 35.7 18.2 30.0 39.0 22.1 34.9 44.3
kW
5.60 5.49 5.40 5.64 5.52 5.45 5.69 5.55 5.48 5.69 5.61 5.57
125
TC
48.7 42.0 36.9 51.3 45.0 39.0 54.1 46.8 40.9 56.9 49.2 45.9
SHC
10.9 19.6 28.0 12.5 22.2 31.5 13.5 24.0 34.0 16.5 28.0 38.8
kW
6.26 6.12 6.02 6.28 6.18 6.09 6.33 6.18 6.13 6.33 6.27 6.22
551B072 (6 TONS)
TEMP (F)
AIR ENT
CONDENSER
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
1800/0.05 2100/0.06 2400/0.06 3000/0.08
Temp (F) Air Entering Evaporator — Ewb
78 72 67 62 78 72 67 62 78 72 67 62 78 72 67 62
75
TC
89.0 82.6 75.6 68.5 91.1 84.9 78.0 70.9 92.4 85.9 79.5 73.5
89.1 82.7 77.0
SHC
25.0 36.0 44.8 55.4 25.1 37.5 49.1 59.7 25.2 38.8 51.1 64.0 41.8 58.1 70.2
kW
4.80 4.60 4.52 4.36 4.86 4.67 4.57 4.46 4.89 4.70 4.57 4.45
4.77 4.61 4.51
85
TC
84.9 78.2 71.6 64.5 87.0 80.9 73.4 65.8
82.0 74.4 67.9 85.8 78.2 72.3
SHC
21.8 31.4 41.2 41.7 21.9 33.0 44.7 55.8 34.7 47.4 60.1 37.6 54.3 66.7
kW
5.40 5.16 5.03 4.89 5.46 5.22 5.11 4.96
5.26 5.09 4.97 5.32 5.17 5.04
95
TC
80.7 73.8 67.4 60.2
76.3 68.3 60.5 77.5 69.3 62.3 82.0 72.8 67.5
SHC
18.7 27.0 37.6 47.9 28.2 40.1 51.6 30.2 43.7 56.2 33.6 49.2 62.9
kW
6.01 5.75 5.60 5.44
5.80 5.66 5.48 5.84 5.68 5.53 5.90 5.73 5.60
105
TC
68.4 62.6 55.9 71.4 64.3 56.2 72.1 64.6 58.3 75.7 67.0 62.4
SHC
22.3 33.5 43.5 23.4 36.5 48.0 25.4 38.4 50.2 29.1 45.2 56.2
kW
6.37 6.22 6.06 6.45 6.27 6.10 6.46 6.29 6.16 6.53 6.36 6.24
115
TC
63.4 57.8 50.7 66.0 60.1 51.5 66.4 59.6 54.5 68.8 60.8 57.5
SHC
18.1 29.5 38.9 18.8 32.9 44.1 20.7 33.3 43.8 24.3 41.4 49.7
kW
7.04 6.89 6.68 7.10 6.91 6.74 7.12 6.95 6.83 7.16 7.01 6.92
125
TC
55.5 49.6 45.8 58.4 52.4 46.1 57.6 52.1 49.5 59.2 52.8 53.1
SHC
15.3 24.0 35.2 15.7 27.5 39.0 17.5 27.5 38.4 20.9 34.6 44.4
kW
7.80 7.61 7.38 7.83 7.67 7.49 7.89 7.72 7.58 7.92 7.78 7.70
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