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58SU0A: Installation, Start-up, Operating and Service and Maintenance Instructions
Table 14 – Gas Valve Outlet Pressure for Gas Heat Values at
Altitude - 80,000
Tabulated Data Based on 80,000 BTUH Input for 0-ft (0 M)
to 5400-ft (1646 M) above sea level
AVG. GAS
ALTITUDE
HEAT
RANGE
VALUE AT
ft (m)
ALTITUDE
(Btu/cu ft)
900
0
925
(0)
950
975
to
1000
1025
2000
1050
(610)
1075
1100
800
2001
825
(611)
850
875
to
900
925
3000
950
(914)
975
1000
775
800
3001
825
(915)
850
to
875
900
4000
925
(1219)
950
975
1000
750
775
4001
800
(1220)
825
850
to
875
900
5000
925
(1524)
950
975
1000
725
750
5001
775
(1524)
800
825
to
850
875
5400
900
(1646)
925
950
975
1000
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
SPECIFIC GRAVITY OF
NATURAL GAS
0.58
0.60
0.62
0.64
Manifold Pressure (in. W.C.)
2.8
2.9
3.0
3.1
2.6
2.7
2.8
2.9
2.5
2.6
2.7
2.8
2.4
2.5
2.5
2.6
2.3
2.3
2.4
2.5
2.1
2.2
2.3
2.4
2.0
2.1
2.2
2.3
1.9
2.0
2.1
2.1
1.9
1.9
2.0
2.1
3.0
3.1
3.1
3.1
2.8
2.9
3.0
3.1
2.7
2.8
2.9
3.0
2.5
2.6
2.7
2.8
2.4
2.5
2.5
2.6
2.2
2.3
2.4
2.5
2.1
2.2
2.3
2.4
2.0
2.1
2.2
2.2
1.9
2.0
2.1
2.1
3.0
3.1
3.1
3.1
2.8
2.9
3.0
3.1
2.6
2.7
2.8
2.9
2.5
2.6
2.6
2.7
2.3
2.4
2.5
2.6
2.2
2.3
2.3
2.4
2.1
2.1
2.2
2.3
2.0
2.0
2.1
2.2
1.9
1.9
2.0
2.1
1.8
1.8
1.9
2.0
2.9
3.0
3.1
3.1
2.7
2.8
2.9
3.0
2.6
2.7
2.8
2.8
2.4
2.5
2.6
2.7
2.3
2.4
2.4
2.5
2.1
2.2
2.3
2.4
2.0
2.1
2.2
2.2
1.9
2.0
2.0
2.1
1.8
1.9
1.9
2.0
1.8
1.8
1.8
1.9
1.8
1.8
1.8
1.8
2.9
3.0
3.1
3.1
2.7
2.8
2.9
3.0
2.5
2.6
2.7
2.8
2.4
2.4
2.5
2.6
2.2
2.3
2.4
2.5
2.1
2.2
2.2
2.3
2.0
2.0
2.1
2.2
1.9
1.9
2.0
2.1
1.8
1.8
1.9
1.9
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
Table 15 – Gas Valve Outlet Pressure for Gas Heat Values at
Altitude - 100,000
Tabulated Data Based on 100,000 BTUH Input for 0-ft (0 M)
to 5400-ft (1646 M)
AVG. GAS
ALTITUDE
HEAT
RANGE
VALUE AT
ft (m)
ALTITUDE
(Btu/cu ft)
900
0
925
(0)
950
975
to
1000
1025
2000
1050
(610)
1075
1100
800
2001
825
(611)
850
875
to
900
925
3000
950
(914)
975
1000
775
800
3001
825
(915)
850
to
875
900
4000
925
(1219)
950
975
1000
750
775
4001
800
(1220)
825
850
to
875
900
5000
925
(1524)
950
975
1000
725
750
5001
775
(1524)
800
825
to
850
875
5400
900
(1646)
925
950
975
1000
25
above sea level
SPECIFIC GRAVITY OF
NATURAL GAS
0.58
0.60
0.62
0.64
Manifold Pressure (in. W.C.)
3.3
3.4
3.5
3.6
3.1
3.2
3.3
3.4
2.9
3.0
3.1
3.2
2.8
2.9
3.0
3.1
2.6
2.7
2.8
2.9
2.5
2.6
2.7
2.8
2.4
2.5
2.6
2.6
2.3
2.4
2.4
2.5
2.2
2.3
2.3
2.4
3.5
3.7
3.8
3.9
3.3
3.4
3.6
3.7
3.1
3.2
3.3
3.5
3.0
3.1
3.2
3.3
2.8
2.9
3.0
3.1
2.6
2.7
2.8
2.9
2.5
2.6
2.7
2.8
2.4
2.5
2.5
2.6
2.3
2.3
2.4
2.5
3.5
3.6
3.7
3.8
3.3
3.4
3.5
3.6
3.1
3.2
3.3
3.4
2.9
3.0
3.1
3.2
2.7
2.8
2.9
3.0
2.6
2.7
2.8
2.8
2.4
2.5
2.6
2.7
2.3
2.4
2.5
2.6
2.2
2.3
2.3
2.4
2.1
2.2
2.2
2.3
3.4
3.5
3.7
3.8
3.2
3.3
3.4
3.5
3.0
3.1
3.2
3.3
2.8
2.9
3.0
3.1
2.7
2.8
2.9
2.9
2.5
2.6
2.7
2.8
2.4
2.5
2.5
2.6
2.3
2.3
2.4
2.5
2.1
2.2
2.3
2.4
2.0
2.1
2.2
2.2
1.9
2.0
2.1
2.1
3.4
3.6
3.7
3.8
3.2
3.3
3.4
3.6
3.0
3.1
3.2
3.3
2.8
2.9
3.0
3.1
2.6
2.7
2.8
2.9
2.5
2.6
2.7
2.8
2.4
2.4
2.5
2.6
2.2
2.3
2.4
2.5
2.1
2.2
2.2
2.3
2.0
2.1
2.1
2.2
1.9
1.9
2.0
2.1
1.8
1.9
1.9
2.0
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