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 accurate
for these products. The National Fuel Gas Code LP orifices are
based on an 11" of water column pressure at the orifice, which dif-
fers from products that use 10" of water column at the orifice. This
difference requires a deviation from the NFGC orifice size recom-
mendations. The Sea Level input should still be reduced by 4%
per thousand ft. and the orifice size must be selected based on
the reduced input in Table 9.
Input (per Orifice
Altitude burner) 25000 Size
0 to 2000 ft. 25000 #54
2000*-3000* 24000 #54
3000*-4000* 23000 #54
4000*-5000* 22000 #54
5000*-6000* 21000 #54
6000*-7000* 20000 #54
7000*-8000* 19000 #55
8000*-9000* 18000 #55
9000*-10000* 17000 #55
TABLE 9
LP GAS
IMPORTANT: 80+ MODELS ONLY! DO NOT
USE THIS CHART WITH ANY 90+ MODELS.
Hig
h A
ltitu
de
Summary of Contents for 801P SERIES
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