Payne PG8J Installation Instructions Manual page 39

TABLE 12—ORIFICE SIZE* AND MANIFOLD PRESSURE FOR GAS INPUT RATE
(TABULATED DATA BASED ON 22,000 BTUH PER BURNER, DERATED 4 PERCENT FOR EACH 1000 FT. ABOVE SEA
AVG.. GAS
ALTITUDE RANGE HEAT VALUE
(BTUH/CU
(FT.)
U.S.A.
0 to
and
2000
Canada
AVG.. GAS
ALTITUDE RANGE HEAT VALUE
(BTUH/CU
(FT.)
U.S.A.
Altitudes
2001 to
U.S.A. 3000 or
and Canada
Canada Altitudes
2000 to
4500
AVG. GAS
ALTITUDE RANGE
HEAT VALUE
(FT.)
(BTU/CU FT.)
U.S.A. 3001 to
Only 4000
AVG. GAS
ALTITUDE RANGE
HEAT VALUE
(FT.)
(BTU/CU FT.)
U.S.A.
4001 to
Only 5000
* Orifice numbers 43 are factory installed.
0.58
Orifice Manifold
FT.)
No. Pressure
900 42 3.5
925 42 3.3
950 43 3.8
975 43 3.6
1000 43 3.5
1025 43 3.3
1050 44 3.6
1075 44 3.4
1100 44 3.3
0.58
Orifice Manifold
FT.)
No. Pressure
800 42 3.4
825 42 3.2
850 43 3.7
875 43 3.5
900 43 3.3
925 43 3.1
950 43 2.9
975 43 2.8
1000 43 2.6
0.58
Orifice Manifold
No. Pressure
775 42 3.2
800 43 3.6
825 43 3.4
850 43 3.2
875 43 3.0
900 43 2.9
925 43 2.7
950 43 2.6
0.58
Orifice Manifold
No. Pressure
750 43 3.6
775 43 3.4
800 43 3.2
825 43 3.0
850 43 2.8
875 43 2.7
900 43 2.5
925 43 2.4
LEVEL)
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure
42 3.6
42 3.4
42 3.3
43 3.8
43 3.6
43 3.4
43 3.2
44 3.5
44 3.4
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure
42 3.5
42 3.3
43 3.8
43 3.6
43 3.4
43 3.2
43 3.0
43 2.9
43 2.7
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure
42 3.3
43 3.8
43 3.5
43 3.3
43 3.1
43 3.0
43 2.8
43 2.7
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure
43 3.8
43 3.5
43 3.3
43 3.1
43 2.9
43 2.8
43 2.6
43 2.5
39
0.62
Manifold Orifice
No. Pressure No.
42 3.7 41
42 3.5 42
42 3.4 42
42 3.2 42
43 3.7 43
43 3.5 43
43 3.4 43
43 3.2 43
44 3.5 43
0.62
Manifold Orifice
No. Pressure No.
42 3.6 42
42 3.4 42
42 3.2 42
43 3.7 43
43 3.5 43
43 3.3 43
43 3.1 43
43 3.0 43
43 2.8 43
0.62
Manifold Orifice
No. Pressure No.
42 3.4 42
42 3.2 42
43 3.7 43
43 3.4 43
43 3.3 43
43 3.1 43
43 2.9 43
43 2.8 43
0.62
Manifold Orifice
No. Pressure No.
42 3.2 42
43 3.6 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
0.64
Manifold
Pressure
3.5
3.7
3.5
3.3
3.8
3.6
3.5
3.3
3.2
0.64
Manifold
Pressure
3.7
3.5
3.3
3.8
3.6
3.4
3.2
3.1
2.9
0.64
Manifold
Pressure
3.5
3.3
3.8
3.6
3.4
3.2
3.0
2.8
0.64
Manifold
Pressure
3.3
3.8
3.5
3.3
3.1
2.9
2.8
2.6