Location Considerations
3.4Altitude
The standard units are designed for full load operation up to 4000 feet (1200 m) above sea level. See Figure 1 for recommended deratings for altitudes greater than 4000 feet (1200 m).
Figure 1 Recommended derating for high altitude operation
| 100 |
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| 98 |
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(%) | 96 |
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94 |
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Rating |
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92 |
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90 |
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| 88 |
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| 86 | 4000 | 4500 | 5000 | 5500 | 6000 | 6500 | 7000 | 7500 | 8000 | 8500 | 9000 | 9500 | 10000 |
| 0 |
Altitude (Feet Above Sea Level)
Operation at full load at a higher altitude can be accommodated in ambient temperatures less than 104°F (40°C) ambient. Figure 2 shows the maximum allowable ambient temperature for full load operation at altitudes above 4000 feet (1200 m).
Figure 2 Maximum ambient temperature for full load operation at higher altitudes
Ambient Temperature | °F (°C) |
Max. |
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104.0(40)
102.2(39)
100.4(38)
98.6(37)
96.8(36)
95.0(35)
93.2 (34)
94.1(33)
89.6(32)
87.8(31)
86.0 (30)
0 | 4000 | 4500 | 5000 | 5500 | 6000 | 6500 | 7000 | 7500 | 8000 | 8500 | 9000 | 9500 | 10000 |
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Table 2 Altitude conversion—feet to meters
| Feet | Meters |
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| 4000 | 1200 |
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| 4500 | 1372 |
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Altitude | 5000 | 1524 |
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5500 | 1676 |
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| 6000 | 1829 |
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| 6500 | 1981 |
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| 7000 | 2134 |
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| Feet | Meters | |
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| 7500 | 2286 | |
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| 8000 | 2438 | |
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Altitude | 8500 | 2591 | |
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9000 | 2743 | ||
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| 9500 | 2896 | |
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| 10000 | 3048 | |
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7
