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PERFORMANCE DATA — 548F
COOLING CAPACITIES
548F036 (3 TONS)
Temp (F)
Outdoor
Entering Air
(Edb)
Indoor Entering Air — Cfm/BF
900/0.10 1200/0.15 1500/0.21
Indoor Entering Air — Ewb (F)
72 67 62 72 67 62 72 67 62
75
TC 42.4 39.9 36.5 43.0 41.2 38.7 45.1 42.8 40.3
SHC 16.7 22.0 26.8 17.5 24.2 30.9 19.3 26.9 34.1
kW 2.77 2.71 2.62 2.78 2.74 2.68 2.85 2.79 2.73
85
TC 41.5 38.4 34.8 43.3 40.4 37.0 44.0 41.7 38.7
SHC 16.6 21.6 26.2 18.2 24.6 30.3 19.3 27.2 33.7
kW 3.01 2.92 2.80 3.07 2.98 2.88 3.09 3.03 2.94
95
TC 40.0 36.3 33.0 42.3 38.5 35.2 43.4 40.0 36.7
SHC 16.2 20.9 25.7 18.2 24.2 29.8 19.7 27.2 32.7
kW 3.24 3.10 2.99 3.32 3.19 3.07 3.36 3.24 3.13
105
TC 38.4 34.7 31.0 40.0 36.7 33.1 41.2 37.7 35.2
SHC 15.7 20.5 24.8 17.5 23.9 28.8 19.3 26.6 31.7
kW 3.47 3.32 3.16 3.53 3.41 3.26 3.58 3.44 3.35
115
TC 36.1 32.5 28.9 38.1 34.3 31.1 39.3 35.5 33.2
SHC 15.1 19.8 23.9 17.2 23.2 27.8 19.1 26.2 30.2
kW 3.66 3.50 3.32 3.76 3.59 3.44 3.81 3.65 3.54
125
TC 34.2 30.5 26.8 35.9 32.0 29.3 36.8 33.0 31.3
SHC 14.6 19.2 22.9 16.7 22.6 26.3 18.5 25.5 28.4
kW 3.88 3.68 3.49 3.97 3.77 3.62 4.02 3.83 3.74
548F048 (4 TONS)
Temp (F)
Outdoor
Entering Air
(Edb)
Indoor Entering Air — Cfm/BF
1200/0.11 1600/0.15 2000/0.22
Indoor Entering Air — Ewb (F)
72 67 62 72 67 62 72 67 62
75
TC 55.5 51.9 47.4 56.9 54.6 50.3 59.3 56.5 52.1
SHC 24.5 31.2 37.4 26.0 35.2 43.4 28.4 39.0 47.6
kW 3.80 3.70 3.55 3.84 3.79 3.66 3.93 3.86 3.71
85
TC 53.4 49.7 45.3 56.3 52.6 47.8 57.5 54.1 49.8
SHC 23.8 30.4 36.7 26.3 34.9 42.6 28.3 38.6 46.9
kW 4.10 3.99 3.84 4.23 4.11 3.94 4.27 4.16 4.01
95
TC 52.0 47.4 43.0 53.7 49.9 45.5 54.5 51.6 47.4
SHC 23.4 29.6 35.8 25.5 33.9 41.6 27.3 38.2 45.2
kW 4.47 4.28 4.11 4.53 4.39 4.23 4.56 4.48 4.29
105
TC 49.3 45.0 40.6 51.8 47.2 43.0 52.6 48.7 45.4
SHC 22.5 28.8 34.7 25.3 33.0 40.3 27.1 37.1 43.3
kW 4.77 4.59 4.39 4.90 4.68 4.52 4.92 4.76 4.63
115
TC 46.6 42.4 38.0 48.8 44.6 40.6 50.2 45.8 43.2
SHC 21.7 27.9 33.6 24.3 32.4 38.7 26.8 36.1 41.2
kW 5.08 4.90 4.66 5.21 5.01 4.81 5.29 5.06 4.96
125
TC 44.0 39.6 35.4 45.6 41.6 38.3 47.0 42.9 40.9
SHC 20.9 26.9 32.4 23.3 31.6 36.5 25.9 35.6 39.0
kW 5.45 5.21 4.96 5.51 5.34 5.14 5.60 5.41 5.30
548F060 (5 TONS)
Temp (F)
Outdoor
Entering Air
(Edb)
Indoor Entering Air — Cfm/BF
1500/0.05 2000/0.08 2500/0.14
Indoor Entering Air — Ewb (F)
72 67 62 72 67 62 72 67 62
75
TC 69.3 64.5 59.3 70.8 67.9 62.8 72.9 69.3 65.4
SHC 30.9 39.2 47.4 33.1 44.9 55.4 35.8 49.4 61.4
kW 4.28 4.15 4.03 4.32 4.25 4.12 4.38 4.29 4.19
85
TC 67.7 62.4 56.8 69.1 65.7 60.2 71.1 67.7 63.2
SHC 30.4 38.6 46.5 32.8 44.6 54.4 35.8 50.0 59.8
kW 4.76 4.61 4.49 4.79 4.72 4.56 4.86 4.78 4.65
95
TC 65.2 59.8 54.4 67.7 62.9 57.6 69.1 64.8 60.7
SHC 29.6 37.6 45.5 32.8 43.6 53.2 35.6 49.3 57.7
kW 5.27 5.10 4.97 5.35 5.20 5.07 5.39 5.27 5.14
105
TC 62.3 57.2 51.8 65.1 59.6 54.9 66.8 61.7 58.3
SHC 28.6 33.8 44.4 32.1 42.6 51.6 35.4 48.2 55.5
kW 5.79 5.66 5.50 5.90 5.73 5.61 5.97 5.79 5.68
115
TC 59.7 54.2 49.0 61.7 57.0 52.5 63.2 58.4 55.8
SHC 27.6 35.8 43.2 31.1 41.9 49.6 34.3 47.0 53.2
kW 6.37 6.24 6.06 6.47 6.34 6.20 6.53 6.36 6.31
125
TC 56.5 51.0 46.0 58.2 53.5 49.8 59.4 55.1 53.0
SHC 26.8 34.7 41.9 30.0 40.8 47.3 33.0 46.5 50.5
kW 7.03 6.87 6.65 7.07 6.96 6.82 7.13 7.03 6.96
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