Performance data (cont)
GROSS COOLING CAPACITIES (cont)
50AH048
Temp |
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| Evaporator Air Quantity Cfm/BF |
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Air Ent |
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| 1200/0.06 |
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| 1600/0.08 |
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| 2000/0.10 |
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Condenser |
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| Evaporator Air Ewb Temp (F) |
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(F) |
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| 72 | 67 | 62 | 57 | 72 | 67 | 62 |
| 57 | 72 | 67 | 62 | 57 | ||
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| TC |
| 56.0 | 52.1 | 47.9 | 44.4 | 57.7 | 54.5 | 50.6 |
| 49.6 | 59.4 | 56.0 | 52.7 | 52.3 |
85 | SHC |
| 27.8 | 34.8 | 41.6 | 44.4 | 30.2 | 39.6 | 48.0 |
| 49.6 | 32.8 | 43.9 | 52.5 | 52.3 |
| kW |
| 3.77 | 3.68 | 3.59 | 3.53 | 3.81 | 3.74 | 3.66 |
| 3.64 | 3.85 | 3.77 | 3.70 | 3.69 |
| TC |
| 54.0 | 50.1 | 45.7 | 42.4 | 55.7 | 52.3 | 48.6 |
| 47.3 | 57.4 | 53.8 | 51.0 | 50.9 |
95 | SHC |
| 27.1 | 34.0 | 40.4 | 42.4 | 29.6 | 38.8 | 47.0 |
| 47.3 | 32.4 | 43.2 | 50.9 | 50.9 |
| kW |
| 4.21 | 4.11 | 4.01 | 3.95 | 4.25 | 4.18 | 4.09 |
| 4.07 | 4.31 | 4.21 | 4.15 | 4.15 |
| TC |
| 51.8 | 47.9 | 42.3 | 40.2 | 53.6 | 50.0 | 45.1 |
| 45.0 | 54.6 | 51.4 | 48.9 | 48.6 |
105 | SHC |
| 26.3 | 33.1 | 38.8 | 40.2 | 29.0 | 38.0 | 44.8 |
| 45.0 | 31.3 | 42.4 | 48.9 | 48.6 |
| kW |
| 4.69 | 4.58 | 4.45 | 4.40 | 4.75 | 4.65 | 4.54 |
| 4.53 | 4.77 | 4.69 | 4.63 | 4.63 |
| TC |
| 49.5 | 45.5 | 38.6 | 37.7 | 51.2 | 47.6 | 41.9 |
| 42.1 | 52.2 | 49.1 | 45.8 | 45.8 |
115 | SHC |
| 25.5 | 32.2 | 37.0 | 37.7 | 28.3 | 27.3 | 41.8 |
| 42.1 | 30.7 | 42.0 | 45.8 | 45.8 |
| kW |
| 5.21 | 5.09 | 4.92 | 4.89 | 5.27 | 5.17 | 5.03 |
| 5.03 | 5.30 | 5.23 | 5.14 | 5.14 |
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| LEGEND |
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BF | — | Bypass Factor |
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Ewb | — Entering |
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kW | — | Compressor Motor Power Input (kilowatts) |
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SHC | — Gross Sensible Heat Capacity (1000 Btuh) |
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TC | — | Gross Total Cooling Capacity (1000 Btuh) |
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NOTES:
1.Performance based on nominal condenser airflow listed in physical data table on page 3.
2.SHC is based on 80 F db temperature of air entering the coil.
Below 80 F db, subtract (corr factor x cfm) from SHC.
Above 80 F db, add (corr factor x cfm) to SHC.
BYPASS |
| ENTERING AIR | |||||
79 |
| 78 | 77 | 76 | 75 | Under 75 | |
FACTOR |
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81 |
| 82 | 83 | 84 | 85 | Over 85 | |
(BF) |
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| Correction Factor |
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.025 | 1.07 |
| 2.12 | 3.19 | 4.25 | 5.32 |
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.05 | 1.04 |
| 2.07 | 3.11 | 4.14 | 5.18 |
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.10 | .98 |
| 1.96 | 2.94 | 3.92 | 4.90 | Use formula |
.20 | .87 |
| 1.74 | 2.62 | 3.49 | 4.36 | shown below |
.30 | .76 |
| 1.53 | 2.29 | 3.05 | 3.82 |
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.35 | .71 |
| 1.42 | 2.13 | 2.83 | 3.54 |
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Correction Factor = 1.10 x (1 – BF) x db – 80)
50AH060
Temp |
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| Evaporator Air Quantity — Cfm/BF |
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Air Ent |
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| 1500/0.06 |
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| 2000/0.09 |
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| 2250/0.10 |
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Condenser |
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| Evaporator Air Ewb Temp (F) |
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(F) |
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| 72 |
| 67 |
| 62 |
| 72 |
| 67 |
| 62 | 72 |
| 67 |
| 62 | |||||
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| TC |
| 64.8 |
| 58.5 |
| 52.9 |
| 68.0 |
| 61.5 |
| 56.3 | 68.9 |
| 62.5 |
| 58.0 | |||
85 | SHC |
| 33.2 |
| 41.1 |
| 48.5 |
| 37.2 |
| 47.3 |
| 55.7 | 38.9 |
| 50.0 |
| 57.7 | |||
| kW |
| 4.49 |
| 4.29 |
| 4.13 |
| 4.59 |
| 4.83 |
| 4.22 | 4.62 |
| 4.41 |
| 4.27 | |||
| TC |
| 61.9 |
| 55.7 |
| 50.2 |
| 65.1 |
| 58.7 |
| 54.0 | 66.1 |
| 59.7 |
| 55.8 | |||
95 | SHC |
| 32.3 |
| 40.1 |
| 47.3 |
| 36.4 |
| 46.5 |
| 54.0 | 38.2 |
| 49.3 |
| 55.8 | |||
| kW |
| 4.94 |
| 4.72 |
| 4.57 |
| 5.04 |
| 4.81 |
| 4.67 | 5.07 |
| 4.84 |
| 4.72 | |||
| TC |
| 58.5 |
| 52.4 |
| 47.2 |
| 61.5 |
| 55.2 |
| 51.4 | 62.6 |
| 56.3 |
| 53.3 | |||
105 | SHC |
| 31.1 |
| 38.8 |
| 45.8 |
| 35.2 |
| 45.2 |
| 51.4 | 37.1 |
| 48.1 |
| 58.2 | |||
| kW |
| 5.41 |
| 5.20 |
| 5.04 |
| 5.51 |
| 5.28 |
| 5.16 | 5.55 |
| 5.32 |
| 5.22 | |||
| TC |
| 54.9 |
| 49.0 |
| 44.1 |
| 57.8 |
| 51.7 |
| 48.7 | 58.7 |
| 52.6 |
| 50.4 | |||
115 | SHC |
| 29.8 |
| 37.5 |
| 44.0 |
| 34.0 |
| 43.9 |
| 48.7 | 35.9 |
| 46.7 |
| 50.4 | |||
| kW |
| 5.93 |
| 5.72 |
| 5.56 |
| 6.04 |
| 5.80 |
| 5.70 | 6.07 |
| 5.83 |
| 5.75 | |||
The following formulas may be used: |
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tldb = | tedb – | sensible capacity (Btuh) |
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| 1.10 x cfm |
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tlwb = |
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| evaporator col (hlwb). |
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hlwb = | hewb – |
| total capacity (Btuh) |
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| 4.5 x cfm |
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Where:
hewb = Enthalpy of air entering evaporator coil
EVAPORATOR FAN PERFORMANCE
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| UNIT SIZE — 50AH |
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CFM |
| 024 | 036 |
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| 048* |
| 060* | ||||
| ESP |
| Fan kW | ESP |
| Fan kW | ESP |
| Fan kW | ESP |
| Fan kW |
600 | .60 |
| .20 | — |
| — | — |
| — | — |
| — |
700 | .54 |
| .22 | — |
| — | — |
| — | — |
| — |
800 | .43 |
| .24 | — |
| — | — |
| — | — |
| — |
900 | .29 |
| .26 | .69 |
| .44 | — |
| — | — |
| — |
1000 | .11 |
| .29 | .57 |
| .46 | — |
| — | — |
| — |
1100 | — |
| — | .42 |
| .49 | 1.10 |
| .45 | 1.11 |
| .52 |
1200 | — |
| — | .23 |
| .52 | 1.01 |
| .49 | 1.045 |
| .55 |
1300 | — |
| — | — |
| — | .90 |
| .51 | .97 |
| .57 |
1400 | — |
| — | — |
| — | .79 |
| .55 | .88 |
| .59 |
1500 | — |
| — | — |
| — | .67 |
| .58 | .78 |
| .62 |
1600 | — |
| — | — |
| — | .54 |
| .61 | .67 |
| .64 |
1700 | — |
| — | — |
| — | .39 |
| .64 | .53 |
| .67 |
1800 | — |
| — | — |
| — | .22 |
| .67 | .52 |
| .70 |
1900 | — |
| — | — |
| — | .03 |
| .70 | .40 |
| .74 |
2000 | — |
| — | — |
| — | — |
| — | .28 |
| .78 |
LEGEND
ESP — External Static Pressure (in. wg)
kW — Total Fan Motor Power Input (kilowatts)
*Standard direct drive indoor (evaporator) fan motor (IFM). For optional belt drive IFM performance, see table on page 8.
NOTES:
1.Above fan performance is based on wet coil and deducted casing losses, and clean
2.Evaporator fans are direct drive (except 048, 060 special order
3.Interpolation is permissible, do not extrapolate.
4.For units installed with accessory electric heaters, see Electric Heater Static Pressure Drop table for additional performance losses.
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