Bryant 350MAV - Page 36

TABLE 8—MODEL 350MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT
FOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLY
(TABULATED DATA BASED ON 20,000 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
0
to
2000
850 43 3.7 43 3.8 42 3.2 42 3.3 42 3.4
875 43 3.5 43 3.6 43 3.7 43 3.8 42 3.2
900 44 3.7 43 3.4 43 3.5 43 3.6 43 3.7
925 44 3.5 44 3.7 44 3.8 43 3.4 43 3.5
950 44 3.4 44 3.5 44 3.6 44 3.7 44 3.8
975 44 3.2 44 3.3 44 3.4 44 3.5 44 3.6
1000 45 3.7 45 3.8 44 3.2 44 3.4 44 3.5
1025 45 3.5 45 3.6 45 3.7 44 3.2 44 3.3
1050 45 3.3 45 3.4 45 3.6 45 3.7 45 3.8
1075 45 3.2 45 3.3 45 3.4 45 3.5 45 3.6
1100 47 3.6 47 3.7 45 3.2 45 3.4 45 3.5
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
Altitudes
2001
to
3000
or
Canada
Altitudes
2000
to
4500
775 43 3.8 42 3.2 42 3.3 42 3.4 42 3.5
800 43 3.5 43 3.7 43 3.8 42 3.2 42 3.3
825 44 3.8 43 3.4 43 3.6 43 3.7 43 3.8
850 44 3.6 44 3.7 44 3.8 43 3.5 43 3.6
875 44 3.4 44 3.5 44 3.6 44 3.7 43 3.4
900 44 3.2 44 3.3 44 3.4 44 3.5 44 3.6
925 45 3.7 45 3.8 44 3.2 44 3.3 44 3.4
950 45 3.5 45 3.6 45 3.7 45 3.8 44 3.3
975 45 3.3 45 3.4 45 3.5 45 3.6 45 3.8
1000 45 3.1 45 3.2 45 3.4 45 3.5 45 3.6
1025 45 3.0 45 3.1 45 3.2 45 3.3 45 3.4
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
3001
to
4000
750 43 3.7 43 3.8 42 3.3 42 3.4 42 3.5
775 43 3.5 43 3.6 43 3.7 43 3.8 42 3.2
800 44 3.7 43 3.4 43 3.5 43 3.6 43 3.7
825 44 3.5 44 3.6 44 3.8 43 3.4 43 3.5
850 44 3.3 44 3.4 44 3.5 44 3.7 44 3.8
875 45 3.8 44 3.2 44 3.3 44 3.5 44 3.6
900 45 3.6 45 3.7 45 3.8 44 3.3 44 3.4
925 45 3.4 45 3.5 45 3.6 45 3.7 44 3.2
950 45 3.2 45 3.3 45 3.4 45 3.5 45 3.7
975 45 3.0 45 3.2 45 3.3 45 3.4 45 3.5
1000 45 2.9 45 3.0 45 3.1 45 3.2 45 3.3
* Orifice numbers shown in shading are factory installed.
—36—