Bryant 310AAV Installation, Start-Up, Operating And Service And Maintenance Instructions page 40

Table 15–Orifice Size* and Manifold Pressure (In. W.C.) for Gas Input Rate (Continued)
(Tabulated data based on 22,000 btuh per burner, derated 4 percent for each 1000 ft. (305 M) above sea level)
AVG. GAS
ALTITUDE RANGE HEAT VALUE
AT ALTITUDE
FT. (M)
(BTU/CU FT.)
5001 to
6000
(1524
U.S.A.
to
1829)
6001 to
7000
(1829
U.S.A.
to
2134)
7001 to
8000
(2134
U.S.A.
to
2438)
8001 to
9000
(2438
U.S.A.
to
2743)
9001 to
10,000
(2743
U.S.A.
to
3048)
* Orifice numbers 43 are factory installed.
0.58
Orifice Manifold
No. Pressure
725 43 3.4
750 43 3.2
775 43 3.0
800 43 2.8
825 43 2.6
850 43 2.5
875 43 2.3
900 43 2.2
675 43 3.4
700 43 3.1
725 43 2.9
750 43 2.7
775 43 2.6
800 43 2.4
825 43 2.3
850 43 2.1
650 43 3.1
675 43 2.9
700 43 2.7
725 43 2.5
750 43 2.4
775 43 2.2
800 43 2.1
825 48 3.7
625 43 2.9
650 43 2.7
675 43 2.5
700 43 2.3
725 43 2.2
750 43 2.0
600 43 2.7
625 43 2.5
650 43 2.3
675 43 2.1
700 48 3.7
725 48 3.5
775 48 3.6
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure No.
43 3.5 43
43 3.3 43
43 3.1 43
43 2.9 43
43 2.7 43
43 2.5 43
43 2.4 43
43 2.3 43
43 3.5 43
43 3.3 43
43 3.0 43
43 2.8 43
43 2.7 43
43 2.5 43
43 2.3 43
43 2.2 43
43 3.2 43
43 3.0 43
43 2.8 43
43 2.6 43
43 2.4 43
43 2.3 43
43 2.1 43
43 2.0 43
43 3.0 43
43 2.8 43
43 2.6 43
43 2.4 43
43 2.2 43
43 2.1 43
43 2.8 43
43 2.6 43
43 2.4 43
43 2.2 43
43 2.0 43
48 3.6 48
48 3.7 43
40
0.62 0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.6 43 3.7
3.4 43 3.5
3.2 43 3.3
3.0 43 3.1
2.8 43 2.9
2.6 43 2.7
2.5 43 2.6
2.3 43 2.4
3.6 43 3.7
3.4 43 3.5
3.1 43 3.2
2.9 43 3.0
2.7 43 2.8
2.6 43 2.7
2.4 43 2.5
2.3 43 2.4
3.4 43 3.5
3.1 43 3.2
2.9 43 3.0
2.7 43 2.8
2.5 43 2.6
2.4 43 2.4
2.2 43 2.3
2.1 43 2.2
3.1 43 3.2
2.9 43 3.0
2.7 43 2.8
2.5 43 2.6
2.3 43 2.4
2.2 43 2.2
2.9 43 3.0
2.6 43 2.7
2.4 43 2.5
2.3 43 2.3
2.1 43 2.2
3.7 43 2.0
2.0 43 2.1