Bryant 830SA - Page 28

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Table 13 – Gas Valve Outlet Pressure for Gas Heat Values at
Altitude -- 60,000
Tabulated Data Based on 60,000 BTUH Input for 0---ft (0 M)
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
Manifold Pressure (in. W.C.)
U.S.A.
900 2.7 2.8 2.9 2.9
0 925 2.5 2.6 2.7 2.8
(0) 950 2.4 2.5 2.6 2.6
975 2.3 2.3 2.4 2.5
to 1000 2.2 2.2 2.3 2.4
1025 2.0 2.1 2.2 2.3
2000 1050 1.9 2.0 2.1 2.2
(610) 1075 1.9 1.9 2.0 2.1
1100 1.8 1.8 1.9 2.0
U.S.A.
800 2.9 3.0 3.1 3.1
2001 825 2.7 2.8 2.9 3.0
(611) 850 2.6 2.6 2.7 2.8
875 2.4 2.5 2.6 2.7
to 900 2.3 2.4 2.4 2.5
925 2.1 2.2 2.3 2.4
3000 950 2.0 2.1 2.2 2.2
(914) 975 1.9 2.0 2.1 2.1
1000 1.8 1.9 2.0 2.0
U.S.A.
Onl
y
775 2.8 2.9 3.0 3.1
800 2.7 2.8 2.9 2.9
3001 825 2.5 2.6 2.7 2.8
(915) 850 2.4 2.4 2.5 2.6
to 875 2.2 2.3 2.4 2.5
900 2.1 2.2 2.2 2.3
4000 925 2.0 2.0 2.1 2.2
(1219) 950 1.9 1.9 2.0 2.1
975 1.8 1.8 1.9 2.0
1000 1.8 1.8 1.8 1.9
U.S.A.
Onl
y
750 2.8 2.9 3.0 3.1
775 2.6 2.7 2.8 2.9
4001 800 2.5 2.5 2.6 2.7
(1220) 825 2.3 2.4 2.5 2.5
850 2.2 2.2 2.3 2.4
to 875 2.0 2.1 2.2 2.3
900 1.9 2.0 2.1 2.1
5000 925 1.8 1.9 2.0 2.0
(1524) 950 1.8 1.8 1.8 1.9
975 1.8 1.8 1.8 1.8
1000 1.8 1.8 1.8 1.8
U.S.A.
Onl
y
725 2.8 2.9 3.0 3.0
750 2.6 2.7 2.8 2.8
5001 775 2.4 2.5 2.6 2.7
(1524) 800 2.3 2.3 2.4 2.5
825 2.1 2.2 2.3 2.3
to 850 2.0 2.1 2.1 2.2
875 1.9 1.9 2.0 2.1
5400 900 1.8 1.8 1.9 2.0
(1646) 925 1.8 1.8 1.8 1.9
950 1.8 1.8 1.8 1.8
975 1.8 1.8 1.8 1.8
1000 1.8 1.8 1.8 1.8
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
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
Manifold Pressure (in. W.C.)
U.S.A.
900 2.8 2.9 3.0 3.1
0 925 2.6 2.7 2.8 2.9
(0) 950 2.5 2.6 2.7 2.8
975 2.4 2.5 2.5 2.6
to 1000 2.3 2.3 2.4 2.5
1025 2.1 2.2 2.3 2.4
2000 1050 2.0 2.1 2.2 2.3
(610) 1075 1.9 2.0 2.1 2.1
1100 1.9 1.9 2.0 2.1
U.S.A.
800 3.0 3.1 3.1 3.1
2001 825 2.8 2.9 3.0 3.1
(611) 850 2.7 2.8 2.9 3.0
875 2.5 2.6 2.7 2.8
to 900 2.4 2.5 2.5 2.6
925 2.2 2.3 2.4 2.5
3000 950 2.1 2.2 2.3 2.4
(914) 975 2.0 2.1 2.2 2.2
1000 1.9 2.0 2.1 2.1
U.S.A.
Onl
y
775 3.0 3.1 3.1 3.1
800 2.8 2.9 3.0 3.1
3001 825 2.6 2.7 2.8 2.9
(915) 850 2.5 2.6 2.6 2.7
to 875 2.3 2.4 2.5 2.6
900 2.2 2.3 2.3 2.4
4000 925 2.1 2.1 2.2 2.3
(1219) 950 2.0 2.0 2.1 2.2
975 1.9 1.9 2.0 2.1
1000 1.8 1.8 1.9 2.0
U.S.A.
Onl
y
750 2.9 3.0 3.1 3.1
775 2.7 2.8 2.9 3.0
4001 800 2.6 2.7 2.8 2.8
(1220) 825 2.4 2.5 2.6 2.7
850 2.3 2.4 2.4 2.5
to 875 2.1 2.2 2.3 2.4
900 2.0 2.1 2.2 2.2
5000 925 1.9 2.0 2.0 2.1
(1524) 950 1.8 1.9 1.9 2.0
975 1.8 1.8 1.8 1.9
1000 1.8 1.8 1.8 1.8
U.S.A.
Onl
y
725 2.9 3.0 3.1 3.1
750 2.7 2.8 2.9 3.0
5001 775 2.5 2.6 2.7 2.8
(1524) 800 2.4 2.4 2.5 2.6
825 2.2 2.3 2.4 2.5
to 850 2.1 2.2 2.2 2.3
875 2.0 2.0 2.1 2.2
5400 900 1.9 1.9 2.0 2.1
(1646) 925 1.8 1.8 1.9 1.9
950 1.8 1.8 1.8 1.8
975 1.8 1.8 1.8 1.8
1000 1.8 1.8 1.8 1.8