ALTITUDE ABOVE
SEA LEVEL
0 to 1,999 FT
2,000 to 2,999 FT
3,000 to 3,999 FT
4,000 to 4,999 FT
5,000 to 5,999 FT
6,000 to 6,999 FT
7,000 to 7,999 FT
8,000 to 8,999 FT
9,000 to 9,999 FT
Table 10. High Altitude Deration Chart for Natural Gas - High Heating Value
ALTITUDE ABOVE
SEA LEVEL
0 to 1,999 FT
2,000 to 2,999 FT
3,000 to 3,999 FT
4,000 to 4,999 FT
5,000 to 5,999 FT
6,000 to 6,999 FT
7,000 to 7,999 FT
8,000 to 8,999 FT
9,000 to 9,999 FT
Table 11. High Altitude Deration Chart for Natural Gas - Low Heating Value
34
NATURAL GAS - HIGH HEATING VALUE
45,000
54,000
72,000
49
47
47
3.5
3.5
3.5
49
47
47
2.9
3.2
3.2
49
47
47
2.8
3.0
3.0
49
47
47
2.6
2.8
2.8
49
47
47
2.5
2.7
2.7
51
49
49
3.3
3.5
3.5
51
49
49
3.0
3.3
3.3
51
49
49
2.8
3.0
3.0
51
49
49
2.6
2.8
2.8
NATURAL GAS - LOW HEATING VALUE
45,000
54,000
72,000
49
47
47
3.5
3.5
3.5
49
47
47
3.5
3.5
3.5
49
47
47
3.1
3.3
3.3
49
47
47
2.9
3.1
3.1
49
47
47
2.7
2.9
2.9
49
47
47
2.6
2.8
2.8
51
49
49
3.4
3.4
3.4
51
49
49
3.1
3.2
3.2
51
49
49
2.9
2.9
2.9
INPUT (BTU)
90,000
108,000
47
47
3.5
3.5
47
47
3.2
3.2
47
47
3.0
3.0
47
47
2.8
2.8
47
47
2.7
2.7
49
49
3.5
3.5
49
49
3.3
3.3
49
49
3.0
3.0
49
49
2.8
2.8
INPUT (BTU)
90,000
108,000
47
47
3.5
3.5
47
47
3.5
3.5
47
47
3.3
3.3
47
47
3.1
3.1
47
47
2.9
2.9
47
47
2.8
2.8
49
49
3.4
3.4
49
49
3.2
3.2
49
49
2.9
2.9
126,000
47
ORIFICE SIZE
3.5
MANIFOLD PRESSURE
47
ORIFICE SIZE
3.2
MANIFOLD PRESSURE
47
ORIFICE SIZE
3.0
MANIFOLD PRESSURE
47
ORIFICE SIZE
2.8
MANIFOLD PRESSURE
47
ORIFICE SIZE
2.7
MANIFOLD PRESSURE
49
ORIFICE SIZE
3.5
MANIFOLD PRESSURE
49
ORIFICE SIZE
3.3
MANIFOLD PRESSURE
49
ORIFICE SIZE
3.0
MANIFOLD PRESSURE
49
ORIFICE SIZE
2.8
MANIFOLD PRESSURE
126,000
47
ORIFICE SIZE
3.5
MANIFOLD PRESSURE
47
ORIFICE SIZE
3.5
MANIFOLD PRESSURE
47
ORIFICE SIZE
3.3
MANIFOLD PRESSURE
47
ORIFICE SIZE
3.1
MANIFOLD PRESSURE
47
ORIFICE SIZE
2.9
MANIFOLD PRESSURE
47
ORIFICE SIZE
2.8
MANIFOLD PRESSURE
49
ORIFICE SIZE
3.4
MANIFOLD PRESSURE
49
ORIFICE SIZE
3.2
MANIFOLD PRESSURE
49
ORIFICE SIZE
2.9
MANIFOLD PRESSURE