Table 9—Model 58DXT Orifice Size* and Manifold Pressure for Correct Input
(Continued)
(TABULATED DATA BASED ON 21,000 BTUH HIGH HEAT/13,500 BTUH LOW HEAT PER BURNER,
DERATED 4% 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
0.66
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
U.S.A.
Only
625
44
3.3/1.4
44
3.4/1.4
44
3.5/1.5
44
3.6/1.5
44
3.7/1.5
650
45
3.7/1.5
45
3.8/1.6
44
3.3/1.3
44
3.4/1.4
44
3.5/1.4
675
46
3.6/1.5
46
3.7/1.5
46
3.8/1.6
45
3.8/1.6
44
3.2/1.3
7001
700
47
3.8/1.6
46
3.4/1.4
46
3.6/1.5
46
3.7/1.5
46
3.8/1.6
725
47
3.5/1.5
47
3.6/1.5
47
3.8/1.6
46
3.4/1.4
46
3.5/1.5
to
750
48
3.7/1.5
47
3.4/1.4
47
3.5/1.5
47
3.6/1.5
47
3.7/1.5
775
48
3.5/1.5
48
3.6/1.5
48
3.8/1.6
47
3.4/1.4
47
3.5/1.4
8000
800
48
3.3/1.4
48
3.4/1.4
48
3.5/1.5
48
3.6/1.5
48
3.7/1.5
825
49
3.6/1.5
49
3.8/1.6
48
3.3/1.4
48
3.4/1.4
48
3.5/1.5
850
49
3.4/1.4
49
3.5/1.5
49
3.7/1.5
49
3.8/1.6
48
3.3/1.4
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
0.66
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
U.S.A.
Only
600
45
3.7/1.5
44
3.2/1.3
44
3.3/1.4
44
3.4/1.4
44
3.5/1.4
625
46
3.6/1.5
46
3.7/1.5
46
3.8/1.6
45
3.8/1.6
44
3.2/1.3
8001
650
47
3.8/1.6
46
3.4/1.4
46
3.5/1.5
46
3.7/1.5
46
3.8/1.6
675
47
3.5/1.4
47
3.6/1.5
47
3.7/1.5
47
3.8/1.6
46
3.5/1.4
to
700
48
3.7/1.5
48
3.8/1.6
47
3.5/1.4
47
3.6/1.5
47
3.7/1.5
725
48
3.4/1.4
48
3.6/1.5
48
3.7/1.5
48
3.8/1.6
47
3.4/1.4
9000
750
49
3.8/1.6
48
3.3/1.4
48
3.4/1.4
48
3.5/1.5
48
3.7/1.5
775
49
3.5/1.5
49
3.7/1.5
49
3.8/1.6
48
3.3/1.4
48
3.4/1.4
800
49
3.3/1.4
49
3.4/1.4
49
3.5/1.5
49
3.7/1.5
49
3.8/1.6
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
0.66
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
U.S.A.
Only
575
46
3.6/1.5
46
3.7/1.5
46
3.8/1.6
45
3.8/1.6
44
3.2/1.3
600
47
3.7/1.5
46
3.4/1.4
46
3.5/1.5
46
3.6/1.5
46
3.8/1.6
9001
625
47
3.4/1.4
47
3.6/1.5
47
3.7/1.5
47
3.8/1.6
46
3.5/1.4
650
48
3.6/1.5
48
3.8/1.6
47
3.4/1.4
47
3.5/1.5
47
3.6/1.5
to
675
48
3.4/1.4
48
3.5/1.4
48
3.6/1.5
48
3.7/1.5
48
3.8/1.6
700
49
3.7/1.5
49
3.8/1.6
48
3.3/1.4
48
3.5/1.4
48
3.6/1.5
10,000
725
49
3.4/1.4
49
3.5/1.5
49
3.7/1.5
49
3.8/1.6
48
3.3/1.4
750
50
3.8/1.6
49
3.3/1.4
49
3.4/1.4
49
3.5/1.5
49
3.6/1.5
775
50
3.5/1.5
50
3.7/1.5
50
3.8/1.6
49
3.3/1.4
49
3.4/1.4
* Orifice numbers shown in BOLD are factory installed.
19
