Bryant 350MAV - Page 40

TABLE 9—MODEL 350MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT (CONTINUED)
FOR USE WITH 140 THROUGH 120 SIZE FURNACES ONLY
(TABULATED DATA BASED ON 23,000 BTUH PER BURNER, DERATED 2 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL)
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64 0.66
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
U.S.A. and Canada
4001
to
5000
725 41 3.6 41 3.7 41 3.8 40 3.6 40 3.8
750 42 3.7 42 3.8 41 3.6 41 3.7 41 3.8
775 42 3.5 42 3.6 42 3.7 42 3.8 41 3.6
800 42 3.3 42 3.4 42 3.5 42 3.6 42 3.7
825 42 3.7 42 3.2 42 3.3 42 3.4 42 3.5
850 43 3.5 43 3.6 43 3.8 42 3.2 42 3.3
875 43 3.3 43 3.4 43 3.6 43 3.7 43 3.8
900 43 3.1 43 3.3 43 3.4 43 3.5 43 3.6
925 43 3.0 43 3.1 43 3.2 43 3.3 43 3.4
950 43 2.8 43 3.9 43 3.0 43 3.1 43 3.2
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64 0.66
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
U.S.A. and Canada
5001
to
6000
700 41 3.5 41 3.7 41 3.8 40 3.6 40 3.7
725 42 3.7 42 3.8 41 3.5 41 3.6 41 3.8
750 42 3.4 42 3.5 42 3.7 42 3.8 41 3.5
775 42 3.2 42 3.3 42 3.4 42 3.5 42 3.7
800 43 3.7 43 3.8 42 3.2 42 3.3 42 3.4
825 43 3.5 43 3.6 43 3.7 43 3.8 42 3.2
850 43 3.3 43 3.4 43 3.5 43 3.6 43 3.7
875 43 3.1 43 3.2 43 3.3 43 3.4 43 3.5
900 43 2.9 43 3.0 43 3.1 43 3.2 43 3.3
925 43 2.7 43 2.8 43 2.9 43 3.0 43 3.1
950 43 2.6 43 2.7 43 2.8 43 2.9 43 3.0
975 43 2.5 43 2.6 43 2.6 43 2.7 43 2.8
1000 43 2.3 43 2.4 43 2.5 43 2.6 43 2.7
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64 0.66
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
Orifice
no.
Manifold
Pressure
U.S.A. Only
6001
to
7000
650 41 3.8 40 3.6 40 3.7 40 3.8 39 3.7
675 41 3.5 41 3.6 41 3.7 40 3.6 40 3.7
700 42 3.6 42 3.7 41 3.5 41 3.6 41 3.7
725 42 3.4 42 3.5 42 3.6 42 3.7 42 3.8
750 43 3.8 42 3.3 42 3.4 42 3.5 42 3.6
775 43 3.6 43 3.7 43 3.8 42 3.3 42 3.4
800 43 3.4 43 3.5 43 3.6 43 3.7 43 3.8
825 43 3.2 43 3.3 43 3.4 43 3.5 43 3.6
850 43 3.0 43 3.1 43 3.2 43 3.3 43 3.4
875 43 2.8 43 2.9 43 3.0 43 3.1 43 3.2
*Orifice numbers shown in shading are factory installed.
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