37
HIGH ALTITUDE
LP GAS AT HIGH ALTITUDES
LP GAS (TABLE 9)
NOTE: Keep any parts removed during LP conversion procedure
stored with the product literature for future use.
LP Gas is a manufactured gas that has consistent heating value
across most regions.
The NFGC guidelines are used with the following exception:
The recommended LP Gas high altitude orifice selections differ
slightly in that the NFGC LP orifice chart, as they are not accu-
rate for these products. The National Fuel Gas Code LP orifices
are based on an 11” of water column pressure at the orifice,
which differs from products that use 10” of water column at the
orifice. This difference requires a deviation from the NFGC ori-
fice size recommendations. The Sea Level input should still be
reduced by 4% per thousand ft. and the orifice size must be se-
lected based on the reduced input in Table 9.
High Altitude
Input (per Orifice
Altitude burner) 25000 Size
0 to 2000 ft. 25,000 54
2000*-3000* 23,000 54
3000*-4000* 22,000 54
4000*-5000* 21,000 54
5000*-6000* 20,000 55
6000*-7000* 19,000 55
7000*-8000* 18,000 55
8000*-9000* 17,000 55
9000*-10000* 16,000 55
TABLE 9
LP GAS
IMPORTANT: 80+ MODELS ONLY! DO NOT
USE THIS CHART WITH ANY 90+ MODELS.
To Next Page
Loading...
Need help?
General
