Specifications

20
PERFORMANCE DATA (cont)
COOLING CAPACITIES, UNITS WITH PERFECT HUMIDITY™ OPTION
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)
551B036 (3 TONS)
TEMP (F)
AIR ENT
CONDENSER
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
900/0.14 1200/0.17 1500/0.20
Temp (F) Air Entering Evaporator — Ewb
78 72 67 62 78 72 67 62 78 72 67 62
75
TC
44.9 41.3 37.3 34.3 46.8 43.5 39.2 35.9 48.8 45.5 41.6 38.3
SHC
12.5 17.5 22.4 26.7 13.2 19.6 25.5 31.2 13.7 21.5 28.5 35.2
kW
2.26 2.19 2.14 2.10 2.28 2.21 2.16 2.14 2.31 2.24 2.19 2.16
85
TC
42.1 38.6 34.4 31.6 44.8 41.3 37.5 33.3 47.0 43.5 38.6 35.5
SHC
10.8 15.2 20.1 25.1 11.4 17.1 23.3 29.0 12.0 18.9 26.3 32.9
kw
2.53 2.46 2.40 2.37 2.55 2.47 2.43 2.40 2.58 2.51 2.45 2.42
95
TC
39.2 35.9 31.4 28.8 44.6 39.2 35.9 30.6 47.0 41.3 35.7 32.9
SHC
9.1 13.0 17.9 23.3 14.0 14.5 21.1 26.9 14.8 16.1 24.2 30.6
kW
2.82 2.74 2.68 2.63 2.83 2.76 2.74 2.67 2.54 2.80 2.75 2.71
105
TC
37.1 33.8 29.7 27.4
36.3 32.2 28.7 38.1 32.8 30.4
SHC
7.5 10.9 15.8 21.0
12.5 18.9 24.6 14.0 21.7 28.1
kW
3.13 3.05 3.00 2.97
3.09 3.04 2.99 3.12 3.07 3.03
115
TC
31.8 28.0 25.5 33.2 28.7 26.5 34.9 30.0 27.9
SHC
9.0 13.7 18.4 10.3 16.8 22.3 11.2 19.3 25.2
kW
3.40 3.36 3.31 3.45 3.38 3.32 3.48 3.41 3.37
125
TC
28.7 26.3 23.4 29.7 25.5 22.9 31.3 27.1 25.5
SHC
6.9 12.2 17.3 7.9 14.5 20.6 9.2 17.3 22.3
kW
3.78 3.73 3.66 3.84 3.77 3.71 3.87 3.79 3.75
551B048 (4 TONS)
TEMP (F)
AIR ENT
CONDENSER
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
1200/0.17 1450/0.19 1600/0.21 2000/0.24
Temp (F) Air Entering Evaporator — Ewb
78 72 67 62 78 72 67 62 78 72 67 62 78 72 67 62
75
TC
57.5 52.9 47.5 41.5 59.4 55.7 50.9 47.5 60.5 57.0 51.7 48.1 64.1 60.5 55.6 52.1
SHC
15.9 22.7 28.4 33.4 17.6 26.1 34.1 38.9 17.2 25.9 33.7 41.6 18.7 29.4 39.1 47.5
kW
2.93 2.87 2.86 2.82 2.94 2.89 2.87 2.84 2.94 2.89 2.86 2.85 2.96 2.90 2.88 2.85
85
TC
53.1 49.2 43.8 37.1 55.2 52.1 47.2 43.6 56.4 52.9 47.9 43.7 59.5 55.4 51.4 47.0
SHC
13.8 19.8 25.5 30.4 14.8 22.2 29.5 35.8 14.9 22.5 30.9 38.8 15.7 24.2 36.0 44.3
kW
3.35 3.26 3.25 3.21 3.36 3.28 3.26 3.23 3.37 3.28 3.26 3.24 3.39 3.28 3.26 3.24
95
TC
49.0 45.8 40.1 32.8 51.0 48.2 43.6 39.4 52.3 48.8 44.0 39.3 55.2 51.7 47.4 43.0
SHC
11.7 17.2 22.5 27.3 12.2 18.4 24.8 32.6 12.5 19.0 28.1 35.9 12.8 20.7 33.0 41.0
kW
3.77 3.71 3.68 3.64 3.78 3.72 3.69 3.67 3.80 3.72 3.69 3.67 3.82 3.74 3.70 3.68
105
TC
44.4 41.6 37.0 29.7 45.7 43.2 38.9 35.4 47.1 43.9 39.7 34.7 49.3 46.5 41.4 37.5
SHC
9.0 13.5 19.5 23.9 9.6 14.7 21.7 29.2 9.8 15.1 23.9 30.7 10.0 16.4 27.8 35.1
kW
4.29 4.20 4.17 4.11 4.29 4.20 4.17 4.14 4.31 4.20 4.17 4.15 4.32 4.22 4.19 4.16
115
TC
40.0 37.2 33.2 27.1 40.6 38.4 34.0 30.8 42.1 39.4 35.5 30.0 43.8 41.3 35.2 31.9
SHC
6.5 9.9 16.4 20.7 7.2 11.3 18.5 25.6 7.0 11.2 19.7 25.4 7.4 12.4 22.4 28.6
kW
4.80 4.73 4.68 4.62 4.80 4.74 4.71 4.64 4.82 4.73 4.72 4.65 4.82 4.74 4.72 4.69
125
TC
35.1 32.4 28.1 24.9
33.8 28.1 27.4 35.3 30.5 26.6 36.1 32.0 28.7
SHC
4.8 7.2 12.9 18.3
8.4 14.5 21.9 16.8 21.1 21.2 9.5 18.3 24.1
kW
5.36 5.29 5.23 5.15
5.30 5.25 5.19 5.29 5.27 5.21 5.30 5.29 5.25
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