41
Table 10
ALTITUDE
ABOVE
SEA LEVEL
LOCAL HEATING VALUE, BTU PER CUBIC FOOT
650 700 750 800 850 900 950
1,000 1,050
2,000 FT
LOW LOW LOW LOW LOW LOW HIGH HIGH
HIGH
3,000 FT
LOW LOW LOW LOW LOW LOW HIGH HIGH
HIGH
4,000 FT
LOW LOW LOW LOW LOW HIGH HIGH HIGH
HIGH
5,000 FT
LOW LOW LOW LOW LOW HIGH HIGH HIGH
HIGH
6,000 FT
LOW LOW LOW LOW HIGH HIGH HIGH HIGH
HIGH
7,000 FT
LOW LOW LOW LOW HIGH HIGH HIGH HIGH
HIGH
8,000 FT
LOW LOW LOW HIGH HIGH HIGH HIGH HIGH
HIGH
9,000 FT
LOW LOW LOW HIGH HIGH HIGH HIGH HIGH
HIGH
10,000 FT
LOW LOW HIGH HIGH HIGH HIGH HIGH HIGH
HIGH
Table 10.
Natural Gas Heating Values
Table 11
Table 11. High Altitude Deration Chart for
Natural Gas - High Heating Value
NATURAL GAS - HIGH HEATING VALUE
ALTITUDE
ABOVE
SEA LEVEL
INPUT (BTU)
54,000 72,000 90,000 108,000
0 to
1,999 FT
47
47
47
47
Orifice Size
3.5
3.5
3.5
3.5
Manifold Pressure
2,000 to
2,999 FT
47
47
47
47
Orifice Size
3.2
3.2
3.2
3.2
Manifold Pressure
3,000 to
3,999 FT
47
47
47
47
Orifice Size
3.0
3.0
3.0
3.0
Manifold Pressure
4,000 to
4,999 FT
47
47
47
47
Orifice Size
2.8
2.8
2.8
2.8
Manifold Pressure
5,000 to
5,999 FT
47
47
47
47
Orifice Size
2.7
2.7
2.7
2.7
Manifold Pressure
6,000 to
6,999 FT
49
49
49
49
Orifice Size
3.5
3.5
3.5
3.5
Manifold Pressure
7,000 to
7,999 FT
49
49
49
49
Orifice Size
3.3
3.3
3.3
3.3
Manifold Pressure
8,000 to
8,999 FT
49
49
49
49
Orifice Size
3.0
3.0
3.0
3.0
Manifold Pressure
9,000 to
9,999 FT
49
49
49
49
Orifice Size
2.8
2.8
2.8
2.8
Manifold Pressure
Table 12
Table 12. High Altitude Deration Chart for
Natural Gas - Low Heating Value
NATURAL GAS - LOW HEATING VALUE
ALTITUDE
ABOVE
SEA LEVEL
INPUT (BTU)
54,000 72,000 90,000 108,000
0 to
1,999 FT
47
47
47
47
Orifice Size
3.5
3.5
3.5
3.5
Manifold Pressure
2,000 to
2,999 FT
47
47
47
47
Orifice Size
3.5
3.5
3.5
3.5
Manifold Pressure
3,000 to
3,999 FT
47
47
47
47
Orifice Size
3.3
3.3
3.3
3.3
Manifold Pressure
4,000 to
4,999 FT
47
47
47
47
Orifice Size
3.1
3.1
3.1
3.1
Manifold Pressure
5,000 to
5,999 FT
47
47
47
47
Orifice Size
2.9
2.9
2.9
2.9
Manifold Pressure
6,000 to
6,999 FT
47
47
47
47
Orifice Size
2.8
2.8
2.8
2.8
Manifold Pressure
7,000 to
7,999 FT
49
49
49
49
Orifice Size
3.4
3.4
3.4
3.4
Manifold Pressure
8,000 to
8,999 FT
49
49
49
49
Orifice Size
3.2
3.2
3.2
3.2
Manifold Pressure
9,000 to
9,999 FT
49
49
49
49
Orifice Size
2.9
2.9
2.9
2.9
Manifold Pressure
Table 13
PROPANE GAS
ALTITUDE
ABOVE
SEA LEVEL
INPUT (BTU)
54,000 72,000 90,000 108,000
0 to
1,999 FT
56
56
56
56
Orifice Size
10.0
10.0
10.0
10.0
Manifold Pressure
2,000 to
2,999 FT
56
56
56
56
Orifice Size
9.0
9.0
9.0
9.0
Manifold Pressure
3,000 to
4,999 FT
56
56
56
56
Orifice Size
8.5
8.5
8.5
8.5
Manifold Pressure
5,000 to
5,999 FT
57
57
57
57
Orifice Size
10.0
10.0
10.0
10.0
Manifold Pressure
6,000 to
7,999 FT
57
57
57
57
Orifice Size
9.0
9.0
9.0
9.0
Manifold Pressure
8,000 to
10,000 FT
57
57
57
57
Orifice Size
8.5
8.5
8.5
8.5
Manifold Pressure
Table 13. High Altitude Deration Chart
for Propane Gas
Summary of Contents for M4RC-072D-35C
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