![background image](http://html.mh-extra.com/html/carrier/59cu5a/59cu5a_installation-start-up-operating-and-service-and-maintenance-instructions_2562894053.webp)
59CU5A: Installation, Start-up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
53
Table 23 – Gas Valve Outlet Pressure for Gas Heat Values at
Altitude - 60,000
Table 24 – Gas Valve Outlet Pressure for Gas Heat Values at
Altitude - 80,000
(Tabulated Data Based on 60,000 BTUH Input for 0-ft (0m) to
5400-ft (1646 M) above sea level)
ALTITUDE
RANGE
ft (m)
AVG. GAS
HEAT
VALUE AT
ALTITUDE
(Btu/cu ft)
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
0.66
0.68
Manifold Pressure
900
2.8
2.9
3.0
3.1
3.1
3.1
0
925
2.6
2.7
2.8
2.9
3.0
3.1
(0)
950
2.5
2.6
2.7
2.8
2.9
2.9
975
2.4
2.5
2.5
2.6
2.7
2.8
to
1000
2.3
2.3
2.4
2.5
2.6
2.7
1025
2.2
2.2
2.3
2.4
2.5
2.5
2000
1050
2.1
2.1
2.2
2.3
2.3
2.4
(610)
1075
2.0
2.0
2.1
2.2
2.2
2.3
1100
1.9
1.9
2.0
2.1
2.1
2.2
800
3.0
3.1
3.1
3.1
3.1
3.1
2001
825
2.8
2.9
3.0
3.1
3.1
3.1
(611)
850
2.7
2.8
2.9
3.0
3.0
3.1
875
2.5
2.6
2.7
2.8
2.9
3.0
to
900
2.4
2.5
2.6
2.6
2.7
2.8
925
2.3
2.3
2.4
2.5
2.6
2.7
3000
950
2.1
2.2
2.3
2.4
2.4
2.5
(914)
975
2.0
2.1
2.2
2.2
2.3
2.4
1000
1.9
2.0
2.1
2.1
2.2
2.3
775
3.0
3.1
3.1
3.1
3.1
3.1
800
2.8
2.9
3.0
3.1
3.1
3.1
3001
825
2.6
2.7
2.8
2.9
3.0
3.1
(915)
850
2.5
2.6
2.6
2.7
2.8
2.9
to
875
2.3
2.4
2.5
2.6
2.7
2.7
900
2.2
2.3
2.4
2.4
2.5
2.6
4000
925
2.1
2.2
2.2
2.3
2.4
2.4
(1219)
950
2.0
2.0
2.1
2.2
2.3
2.3
975
1.9
1.9
2.0
2.1
2.1
2.2
1000
1.8
1.8
1.9
2.0
2.0
2.1
750
2.9
3.0
3.1
3.1
3.1
3.1
775
2.7
2.8
2.9
3.0
3.1
3.1
4001
800
2.6
2.7
2.8
2.8
2.9
3.0
(1220)
825
2.4
2.5
2.6
2.7
2.8
2.8
850
2.3
2.4
2.4
2.5
2.6
2.7
to
875
2.2
2.2
2.3
2.4
2.5
2.5
900
2.0
2.1
2.2
2.2
2.3
2.4
5000
925
1.9
2.0
2.1
2.1
2.2
2.3
(1524)
950
1.8
1.9
2.0
2.0
2.1
2.1
975
1.8
1.8
1.9
1.9
2.0
2.0
1000
1.8
1.8
1.8
1.8
1.9
1.9
725
2.9
3.0
3.1
3.1
3.1
3.1
750
2.7
2.8
2.9
3.0
3.1
3.1
5001
775
2.6
2.7
2.8
2.8
2.9
3.0
(1525)
800
2.4
2.5
2.6
2.7
2.7
2.8
825
2.3
2.3
2.4
2.5
2.6
2.7
to
850
2.1
2.2
2.3
2.4
2.4
2.5
875
2.0
2.1
2.2
2.2
2.3
2.4
900
1.9
2.0
2.0
2.1
2.2
2.2
5400
925
1.8
1.9
1.9
2.0
2.1
2.1
(1646)
950
1.8
1.8
1.8
1.9
1.9
2.0
975
1.8
1.8
1.8
1.8
1.9
1.9
1000
1.8
1.8
1.8
1.8
1.8
1.8
(Tabulated Data Based on 80,000 BTUH Input for 0-ft (0m) to 5400-ft
(1646 M) above sea level)
ALTITUDE
RANGE
ft (m)
AVG. GAS
HEAT
VALUE AT
ALTITUDE
(Btu/cu ft)
SPECIFIC GRAVITY OF NATURAL GAS
0.58
0.60
0.62
0.64
0.66
0.68
Manifold Pressure
900
2.7
2.8
2.9
3.0
3.1
3.1
0
925
2.6
2.7
2.8
2.8
2.9
3.0
(0)
950
2.4
2.5
2.6
2.7
2.8
2.9
975
2.3
2.4
2.5
2.6
2.6
2.7
to
1000
2.2
2.3
2.4
2.4
2.5
2.6
1025
2.1
2.2
2.2
2.3
2.4
2.5
2000
1050
2.0
2.1
2.1
2.2
2.3
2.3
(610)
1075
1.9
2.0
2.0
2.1
2.2
2.2
1100
1.8
1.9
1.9
2.0
2.1
2.1
800
2.9
3.0
3.1
3.1
3.1
3.1
2001
825
2.8
2.9
3.0
3.1
3.1
3.1
(611)
850
2.6
2.7
2.8
2.9
3.0
3.1
875
2.5
2.5
2.6
2.7
2.8
2.9
to
900
2.3
2.4
2.5
2.6
2.6
2.7
925
2.2
2.3
2.4
2.4
2.5
2.6
3000
950
2.1
2.2
2.2
2.3
2.4
2.4
(914)
975
2.0
2.0
2.1
2.2
2.3
2.3
1000
1.9
1.9
2.0
2.1
2.1
2.2
775
2.9
3.0
3.1
3.1
3.1
3.1
800
2.7
2.8
2.9
3.0
3.1
3.1
3001
825
2.6
2.6
2.7
2.8
2.9
3.0
(915)
850
2.4
2.5
2.6
2.7
2.7
2.8
to
875
2.3
2.4
2.4
2.5
2.6
2.7
900
2.1
2.2
2.3
2.4
2.4
2.5
4000
925
2.0
2.1
2.2
2.2
2.3
2.4
(1219)
950
1.9
2.0
2.1
2.1
2.2
2.3
975
1.8
1.9
2.0
2.0
2.1
2.1
1000
1.8
1.8
1.9
1.9
2.0
2.0
750
2.9
3.0
3.0
3.1
3.1
3.1
775
2.7
2.8
2.9
2.9
3.0
3.1
4001
800
2.5
2.6
2.7
2.8
2.9
2.9
(1220)
825
2.4
2.4
2.5
2.6
2.7
2.8
850
2.2
2.3
2.4
2.5
2.5
2.6
to
875
2.1
2.2
2.2
2.3
2.4
2.5
900
2.0
2.0
2.1
2.2
2.3
2.3
5000
925
1.9
1.9
2.0
2.1
2.1
2.2
(1524)
950
1.8
1.8
1.9
2.0
2.0
2.1
975
1.8
1.8
1.8
1.9
1.9
2.0
1000
1.8
1.8
1.8
1.8
1.8
1.9
725
2.9
3.0
3.1
3.1
3.1
3.1
750
2.7
2.8
2.9
3.0
3.0
3.1
5001
775
2.5
2.6
2.7
2.8
2.9
2.9
(1525)
800
2.4
2.4
2.5
2.6
2.7
2.8
825
2.2
2.3
2.4
2.4
2.5
2.6
to
850
2.1
2.2
2.2
2.3
2.4
2.4
875
2.0
2.0
2.1
2.2
2.2
2.3
900
1.9
1.9
2.0
2.0
2.1
2.2
5400
925
1.8
1.8
1.9
1.9
2.0
2.1
(1646)
950
1.8
1.8
1.8
1.8
1.9
2.0
975
1.8
1.8
1.8
1.8
1.8
1.9
1000
1.8
1.8
1.8
1.8
1.8
1.8