Payne PG8J Installation Instructions Manual page 42

TABLE 13—ORIFICE SIZE* AND MANIFOLD PRESSURE FOR GAS INPUT RATE
(TABULATED DATA BASED ON 21,000 BTUH PER BURNER, DERATED 4 PERCENT FOR EACH 1000 FT. ABOVE SEA
AVG. GAS
ALTITUDE RANGE (FT.)
HEAT VALUE
(BTU/CU FT.)
U.S.A. and
0 to 2000
Canada
AVG. GAS
ALTITUDE RANGE (FT.) HEAT VALUE
(BTU/CU FT.)
U.S.A.
Altitudes
2001 to
U.S.A. and 3000 or
Canada Canada
Altitudes
2000 to
4500
AVG. GAS
ALTITUDE RANGE (FT.)
HEAT VALUE
(BTU/CU FT.)
3001 to
U.S.A. Only
4000
AVG. GAS
HEAT VALUE
ALTITUDE RANGE (FT.)
(BTU/CU FT.)
4001 to
U.S.A. Only
5000
LEVEL)
0.58
Orifice Manifold
No. Pressure
900 42 3.2
925 43 3.7
950 43 3.5
975 43 3.3
1000 44 3.6
1025 44 3.4
1050 44 3.3
1075 45 3.8
1100 46 3.8
0.58
Orifice Manifold
No. Pressure
800 43 3.8
825 43 3.5
850 43 3.3
875 43 3.2
900 43 3.0
925 43 2.8
950 43 2.7
975 43 2.5
1000 43 2.4
0.58
Orifice Manifold
No. Pressure
775 43 3.5
800 43 3.3
825 43 3.1
850 43 2.9
875 43 2.8
900 43 2.6
925 43 2.5
950 43 2.4
0.58
Orifice Manifold
No. Pressure
750 43 3.3
775 43 3.1
800 43 2.9
825 43 2.7
850 43 2.6
875 43 2.4
900 43 2.3
925 43 2.2
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure No.
42 3.3 42
43 3.8 42
43 3.6 43
43 3.4 43
43 3.3 43
44 3.6 43
44 3.4 44
44 3.2 44
45 3.7 44
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure No.
42 3.2 42
43 3.7 43
43 3.5 43
43 3.3 43
43 3.1 43
43 2.9 43
43 2.8 43
43 2.6 43
43 2.5 43
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure No.
43 3.7 43
43 3.4 43
43 3.2 43
43 3.0 43
43 2.9 43
43 2.7 43
43 2.6 43
43 2.4 43
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure No.
43 3.4 43
43 3.2 43
43 3.0 43
43 2.8 43
43 2.7 43
43 2.5 43
43 2.4 43
43 2.2 43
42
0.62 0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.4 42 3.5
3.2 42 3.3
3.7 43 3.8
3.5 43 3.7
3.4 43 3.5
3.2 43 3.3
3.5 43 3.2
3.3 44 3.4
3.2 44 3.3
0.62 0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.3 42 3.4
3.8 42 3.2
3.6 43 3.7
3.4 43 3.5
3.2 43 3.3
3.0 43 3.1
2.9 43 2.9
2.7 43 2.8
2.6 43 2.7
0.62 0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.8 42 3.2
3.5 43 3.7
3.3 43 3.4
3.1 43 3.2
3.0 43 3.1
2.8 43 2.9
2.7 43 2.7
2.5 43 2.6
0.62 0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.5 43 3.6
3.3 43 3.4
3.1 43 3.2
2.9 43 3.0
2.8 43 2.8
2.6 43 2.7
2.5 43 2.5
2.3 43 2.4