40
Table 15. High Altitude Deration Chart for Natural Gas - High Heating Value
NATURAL GAS - HIGH HEATING VALUE
ALTITUDE
ABOVE
SEA LEVEL
INPUT (BTU) and STAGE
60,000
80,000
100,000
120,000
1st
2nd 1st 2nd 1st 2nd
1st
2nd
0 to 1,999 FT
45
45
45
45
ORIFICE SIZE
1.7
3.5
1.7
3.5
1.7
3.5
1.7
3.5
MANIFOLD PRESSURE
2,000 to 2,999 FT
45
45
45
45
ORIFICE SIZE
1.7
3.3
1.7
3.3
1.7
3.3
1.7
3.3
MANIFOLD PRESSURE
3,000 to 3,999 FT
45
45
45
45
ORIFICE SIZE
1.7
3.1
1.7
3.1
1.7
3.1
1.7
3.1
MANIFOLD PRESSURE
4,000 to 4,999 FT
45
45
45
45
ORIFICE SIZE
1.7
2.9
1.7
2.9
1.7
2.9
1.7
2.9
MANIFOLD PRESSURE
5,000 to 5,999 FT
45
45
45
45
ORIFICE SIZE
1.7
2.8
1.7
2.8
1.7
2.8
1.7
2.8
MANIFOLD PRESSURE
6,000 to 6,999 FT
48
48
48
48
ORIFICE SIZE
1.7
3.5
1.7
3.5
1.7
3.5
1.7
3.5
MANIFOLD PRESSURE
7,000 to 7,999 FT
48
48
48
48
ORIFICE SIZE
1.7
3.3
1.7
3.3
1.7
3.3
1.7
3.3
MANIFOLD PRESSURE
8,000 to 8,999 FT
48
48
48
48
ORIFICE SIZE
1.7
3.0
1.7
3.0
1.7
3.0
1.7
3.0
MANIFOLD PRESSURE
9,000 to 9,999 FT
48
48
48
48
ORIFICE SIZE
1.7
2.8
1.7
2.8
1.7
2.8
1.7
2.8
MANIFOLD PRESSURE
Table 16. High Altitude Deration Chart for Natural Gas - Low heating Value
NATURAL GAS - LOW HEATING VALUE
ALTITUDE
ABOVE SEA
LEVEL
INPUT (BTU) and STAGE
60,000
80,000
100,000
120,000
1st 2nd 1st 2nd 1st 2nd 1st 2nd
0 to 1,999 FT
45
45
45
45
ORIFICE SIZE
1.7
3.5
1.7
3.5
1.7
3.5
1.7
3.5
MANIFOLD PRESSURE
2,000 to 2,999 FT
45
45
45
45
ORIFICE SIZE
1.7
3.5
1.7
3.5
1.7
3.5
1.7
3.5
MANIFOLD PRESSURE
3,000 to 3,999 FT
45
45
45
45
ORIFICE SIZE
1.7
3.4
1.7
3.4
1.7
3.4
1.7
3.4
MANIFOLD PRESSURE
4,000 to 4,999 FT
45
45
45
45
ORIFICE SIZE
1.7
3.2
1.7
3.2
1.7
3.2
1.7
3.2
MANIFOLD PRESSURE
5,000 to 5,999 FT
45
45
45
45
ORIFICE SIZE
1.7
3.1
1.7
3.1
1.7
3.1
1.7
3.1
MANIFOLD PRESSURE
6,000 to 6,999 FT
45
45
45
45
ORIFICE SIZE
1.7
2.9
1.7
2.9
1.7
2.9
1.7
2.9
MANIFOLD PRESSURE
7,000 to 7,999 FT
48
48
48
48
ORIFICE SIZE
1.7
3.5
1.7
3.5
1.7
3.5
1.7
3.5
MANIFOLD PRESSURE
8,000 to 8,999 FT
48
48
48
48
ORIFICE SIZE
1.7
3.3
1.7
3.3
1.7
3.3
1.7
3.3
MANIFOLD PRESSURE
9,000 to 9,999 FT
48
48
48
48
ORIFICE SIZE
1.7
3.1
1.7
3.1
1.7
3.1
1.7
3.1
MANIFOLD PRESSURE