Installation guide

Table 14-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 SPECiFiC GRAVITY OF NATURAL GAS
ALTITUDE RANGE HEAT VALUE 0.58 0.60 0.62 0.64
FT. (M) AT ALTITUDE
(BTU/CU FT.) No. Pressure No. Pressure No. Pressure No. Pressure
725 43 3.4 43 3.5 43 3.6 43 3.7
750 43 3.2 43 3.3 43 3.4 43 3.5
5001 to 775 43 3.0 43 3.1 43 3.2 43 3.3
6000 800 43 2.8 43 2.9 43 3.0 43 3.1
U.S.A. (1524
825 43 2.6 43 2.7 43 2.8 43 2.9
to
1829) 850 43 2.5 43 2.5 43 2.6 43 2.7
875 43 2.3 43 2.4 43 2.5 43 2.6
900 43 2.2 43 2.3 43 2.3 43 2.4
675 43 3.4 43 3.5 43 3.6 43 3.7
700 43 3.1 43 3.3 43 3.4 43 3.5
6001 to 725 43 2.9 43 3.0 43 3.1 43 3.2
7000 750 43 2.7 43 2.8 43 2.9 43 3.0
U.S.A. (1829
775 43 2.6 43 2.7 43 2.7 43 2.8
to
2134) 800 43 2.4 43 2.5 43 2.6 43 2.7
825 43 2.3 43 2.3 43 2.4 43 2.5
850 43 2.1 43 2.2 43 2.3 43 2.4
650 43 3.1 43 3.2 43 3.4 43 3.5
675 43 2.9 43 3.0 43 3.1 43 3.2
7001 to 700 43 2.7 43 2.8 43 2.9 43 3.0
8000 725 43 2.5 43 2.6 43 2.7 43 2.8
U.S.A. (2134
750 43 2.4 43 2.4 43 2.5 43 2.6
to
2438) 775 43 2.2 43 2.3 43 2.4 43 2.4
800 43 2.1 43 2.1 43 2.2 43 2.3
825 48 3.7 43 2.0 43 2.1 43 2.2
625 43 2.9 43 3.0 43 3.1 43 3.2
U.S.A.
8001 to 650 43 2.7 43 2.8 43 2.9 43 3.0
9000 675 43 2.5 43 2.6 43 2.7 43 2.8
(2438
700 43 2.3 43 2.4 43 2.5 43 2.6
to
2743) 725 43 2.2 43 2.2 43 2.3 43 2.4
750 43 2.0 43 2.1 43 2.2 43 2.2
600 43 2.7 43 2.8 43 2.9 43 3.0
U.S.A.
9001 to 625 43 2.5 43 2.6 43 2.6 43 2.7
10,000 650 43 2.3 43 2.4 43 2.4 43 2.5
(2743 675 43 2.1 43 2.2 43 2.3 43 2.3
to
3048) 700 48 3.7 43 2.0 43 2.1 43 2.2
725 48 3.5 48 3.6 48 3.7 43 2.0
775
__ct_
48 3.6 48 3.7 43 2.0 43 2.1
40