Payne PG8J Installation Instructions Manual page 41

TABLE 12–ORIFICE SIZE* AND MANIFOLD PRESSURE FOR GAS INPUT RATE (CONTINUED)
(TABULATED DATA BASED ON 22,000 BTUH PER BURNER, DERATED 4 PERCENT FOR EACH 1000 FT. ABOVE SEA
AVG. GAS
HEAT VALUE
ALTITUDE RANGE
AT ALTITUDE
(FT.)
(BTU/CU FT.)
U.S.A. 9001 to
Only
10,000
0.58
Orifice Manifold
No. Pressure
600 43 2.7
625 43 2.5
650 43 2.3
675 43 2.1
700 48 3.7
725 48 3.5
LEVEL)
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure No.
43 2.8
43 2.6
43 2.4
43 2.2
43 2.0
48 3.6
41
0.62
Manifold Orifice
Pressure No.
43 2.9 43
43 2.6 43
43 2.4 43
43 2.3 43
43 2.1 43
48 3.7 43
0.64
Manifold
Pressure
3.0
2.7
2.5
2.3
2.2
2.0