J801X Installation Manual

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Table 5. High Altitude Deration Chart for Propane Gas
PROPANE DERATION CHART
ALTITUDE ABOVE
SEA LEVEL
INPUT (BTUh)
45,000 52,000 54,000 70,000 85,000 90,000 108,000 122,000
0 to 1,999 FT
57 56 56 56 56 56 56 56 ORIFICE SIZE
10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 MANIFOLD PRESSURE
2,000 to 2,999 FT
57 56 56 56 56 56 56 56 ORIFICE SIZE
9.0 9.0 9.0 9.0 9.0 9.0 9.0 9.0 MANIFOLD PRESSURE
3,000 to 4,999 FT
57 56 56 56 56 56 56 56 ORIFICE SIZE
8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 MANIFOLD PRESSURE
5,000 to 5,999 FT
59 57 57 57 57 57 57 57 ORIFICE SIZE
10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 MANIFOLD PRESSURE
6,000 to 7,999 FT
59 57 57 57 57 57 57 57 ORIFICE SIZE
9.0 9.0 9.0 9.0 9.0 9.0 9.0 9.0 MANIFOLD PRESSURE
8,000 to 10,000 FT
59 57 57 57 57 57 57 57 ORIFICE SIZE
8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 MANIFOLD PRESSURE
LOCAL HEATING VALUES FOR NATURAL GAS
ALTITUDE ABOVE
SEA LEVEL
BTUh 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 6. Natural Gas Heating Values