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Location Considerations
6
2.4 Altitude
The standard units are designed for full load operation up to 4000 feet (1200m) above sea level. See
Figure 1 for recommended deratings for altitudes greater than 4000 feet (1200m).
Figure 1 Recommended derating for high altitude operation
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 (1200m).
Figure 2 Maximum ambient temperature for full load operation at higher altitudes
Table 3 Altitude conversion—feet to meters
Feet = Meters
4000 = 1200 7500 = 2286
4500 = 1372 8000 = 2438
5000 = 1524 8500 = 2591
5500 = 1676 9000 = 2743
6000 = 1829 9500 = 2896
6500 = 1981 10000 = 3048
7000 = 2134
100
98
96
94
92
90
88
86
9000
Rating (%)
10000
9500
8500
8000
7500
7000
6500
6000
5500
5000
4500
4000
0
Max. Ambient Temperature
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
Altitude—Feet
°F (°C)