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TABLE 10–(Tabulated Data Based On 22,000 Btuh High-Heat/14,500 Btuh for Low-Heat Per Burner,
Derated 4 Percent For Each 1000 Ft Above Sea Level)
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A.
Only
5001
to
6000
725
43
3.4/1.5
43
3.5/1.5
43
3.6/1.6
43
3.7/1.6
750
43
3.2/1.4
43
3.3/1.4
43
3.4/1.5
43
3.5/1.5
775
44
3.4/1.5
44
3.5/1.5
43
3.2/1.4
43
3.3/1.4
800
44
3.2/1.4
44
3.3/1.4
44
3.4/1.5
44
3.5/1.5
825
46
3.8/1.7
45
3.8/1.6
44
3.2/1.4
44
3.3/1.4
850
46
3.6/1.6
46
3.7/1.6
46
3.8/1.7
45
3.8/1.6
875
47
3.8/1.7
46
3.5/1.5
46
3.6/1.6
46
3.7/1.6
900
47
3.6/1.6
47
3.8/1.6
46
3.4/1.5
46
3.5/1.5
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A.
Only
6001
to
7000
675
43
3.4/1.5
43
3.5/1.5
43
3.6/1.6
43
3.7/1.6
700
44
3.6/1.6
43
3.3/1.4
43
3.4/1.5
43
3.5/1.5
725
44
3.4/1.5
44
3.5/1.5
44
3.6/1.6
43
3.2/1.4
750
45
3.8/1.7
44
3.3/1.4
44
3.4/1.5
44
3.5/1.5
775
46
3.7/1.6
45
3.7/1.6
45
3.8/1.7
44
3.2/1.4
800
46
3.5/1.5
46
3.6/1.6
46
3.8/1.6
45
3.7/1.6
825
47
3.7/1.6
46
3.4/1.5
46
3.5/1.5
46
3.6/1.6
850
47
3.5/1.5
47
3.6/1.6
47
3.8/1.6
46
3.4/1.5
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
Orifice
No.
Mainifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A.
Only
7001
to
8000
650
44
3.6/1.6
43
3.2/1.4
43
3.4/1.5
43
3.5/1.5
675
44
3.3/1.5
44
3.5/1.5
44
3.6/1.6
43
3.2/1.4
700
45
3.8/1.6
44
3.2/1.4
44
3.3/1.4
44
3.4/1.5
725
46
3.7/1.6
46
3.8/1.7
45
3.7/1.6
44
3.2/1.4
750
46
3.4/1.5
46
3.6/1.5
46
3.7/1.6
46
3.8/1.6
775
47
3.6/1.6
47
3.8/1.6
46
3.4/1.5
46
3.6/1.5
800
47
3.4/1.5
47
3.5/1.5
47
3.7/1.6
47
3.8/1.6
825
48
3.7/1.6
48
3.8/1.6
47
3.4/1.5
47
3.6/1.5
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A.
Only
8001
to
9000
625
44
3.3/1.5
44
3.5/1.5
44
3.6/1.6
43
3.2/1.4
650
45
3.7/1.6
44
3.2/1.4
44
3.3/1.4
44
3.4/1.5
675
46
3.6/1.6
46
3.8/1.6
45
3.7/1.6
45
3.8/1.7
700
47
3.8/1.7
46
3.5/1.5
46
3.6/1.6
46
3.7/1.6
725
47
3.6/1.6
47
3.7/1.6
47
3.8/1.7
46
3.5/1.5
750
48
3.8/1.7
47
3.5/1.5
47
3.6/1.6
47
3.7/1.6
775
48
3.6/1.5
48
3.7/1.6
48
3.8/1.7
47
3.5/1.5
* Orifice numbers 43 are factory installed
33