Bryant 355M-40-4 Installation And Operating Instructions Manual page 38

TABLE 12—MODEL 355MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT
(TABULATED DATA BASED ON 20,000 BTUH HIGH HEAT/13,000 BTUH LOW HEAT PER BURNER
AVG GAS
ALTITUDE
HEAT VALUE
RANGE
AT ALTITUDE
(FT)
(BTU/CU FT)
850
875
900
0 925
950
to 975
1000
2000 1025
1050
1075
1100
AVG GAS
ALTITUDE
HEAT VALUE
RANGE
AT ALTITUDE
(FT)
(BTU/CU FT)
U.S.A. 775
Altitudes 800
2001 825
to 850
3000 875
or 900
Canada 925
Altitudes 950
2000 975
to 1000
4500 1025
AVG GAS
ALTITUDE
HEAT VALUE
RANGE
AT ALTITUDE
(FT)
(BTU/CU FT)
750
775
800
3001 825
850
to 875
900
4000 925
950
975
1000
DERATED 2% FOR EACH 1000 FT ABOVE SEA LEVEL)
0.58 0.60
Manifold
Orifice Orifice
Pressure
No. No.
High/Low
43 3.7/1.5 43
43 3.5/1.5 43
44 3.7/1.6 43
44 3.5/1.5 44
44 3.4/1.4 44
44 3.2/1.3 44
45 3.7/1.6 45
45 3.5/1.5 45
45 3.3/1.4 45
45 3.2/1.3 45
47 3.6/1.5 47
0.58 0.60
Manifold
Orifice Orifice
Pressure
No.
No.
High/Low
43 3.8/1.6 42
43 3.5/1.5 43
44 3.8/1.6 43
44 3.6/1.5 44
44 3.4/1.4 44
44 3.2/1.4 44
45 3.7/1.5 45
45 3.5/1.5 45
45 3.3/1.4 45
47 3.7/1.6 45
47 3.6/1.5 47
0.58 0.60
Manifold
Orifice Orifice
Pressure
No. No.
High/Low
43 3.7/1.6 43
43 3.5/1.5 43
44 3.7/1.6 43
44 3.5/1.5 44
44 3.3/1.4 44
45 3.8/1.6 44
45 3.6/1.5 45
45 3.4/1.4 45
45 3.2/1.4 45
47 3.6/1.5 45
47 3.5/1.5 47
—38—
SPECIFIC GRAVITY OF NATURAL GAS
0.62
Manifold Manifold
Orifice
Pressure Pressure
No.
High/Low High/Low
3.8/1.6 42 3.2/1.4
3.6/1.5 43 3.7/1.6
3.4/1.4 43 3.5/1.5
3.7/1.6 44 3.8/1.6
3.5/1.5 44 3.6/1.5
3.3/1.4 44 3.4/1.4
3.8/1.6 44 3.2/1.4
3.6/1.5 45 3.7/1.6
3.4/1.5 45 3.6/1.5
3.3/1.4 45 3.4/1.4
3.7/1.6 45 3.2/1.4
SPECIFIC GRAVITY OF NATURAL GAS
0.62
Manifold Manifold
Orifice
Pressure Pressure
No.
High/Low High/Low
3.2/1.4 42 3.3/1.4
3.7/1.5 43 3.8/1.6
3.4/1.5 43 3.6/1.5
3.7/1.6 44 3.8/1.6
3.5/1.5 44 3.6/1.5
3.3/1.4 44 3.4/1.4
3.8/1.6 44 3.2/1.4
3.6/1.5 45 3.7/1.6
3.4/1.4 45 3.5/1.5
3.2/1.4 45 3.4/1.4
3.7/1.6 45 3.2/1.3
SPECIFIC GRAVITY OF NATURAL GAS
0.62
Manifold Manifold
Orifice
Pressure Pressure
No.
High/Low High/Low
3.8/1.6 42 3.3/1.4
3.6/1.5 43 3.7/1.6
3.4/1.4 43 3.5/1.5
3.6/1.5 44 3.8/1.6
3.4/1.4 44 3.5/1.5
3.2/1.4 44 3.3/1.4
3.7/1.6 45 3.8/1.6
3.5/1.5 45 3.6/1.5
3.3/1.4 45 3.4/1.5
3.2/1.3 45 3.3/1.4
3.6/1.5 47 3.7/1.6
0.64 0.66
Manifold
Orifice Orifice
Pressure
No. No.
High/Low
42 3.3/1.4 42
43 3.8/1.6 42
43 3.6/1.5 43
43 3.4/1.4 43
44 3.7/1.6 44
44 3.5/1.5 44
44 3.4/1.4 44
44 3.2/1.3 44
45 3.7/1.6 45
45 3.5/1.5 45
45 3.4/1.4 45
0.64 0.66
Manifold
Orifice Orifice
Pressure
No. No.
High/Low
42 3.4/1.4 42
42 3.2/1.4 42
43 3.7/1.5 43
43 3.5/1.5 43
44 3.7/1.6 43
44 3.5/1.5 44
44 3.3/1.4 44
45 3.8/1.6 44
45 3.6/1.5 45
45 3.5/1.5 45
45 3.3/1.4 45
0.64 0.66
Manifold
Orifice Orifice
Pressure
No. No.
High/Low
42 3.4/1.4 42
43 3.8/1.6 42
43 3.6/1.5 43
43 3.4/1.4 43
44 3.7/1.5 44
44 3.5/1.5 44
44 3.3/1.4 44
45 3.7/1.6 44
45 3.5/1.5 45
45 3.4/1.4 45
45 3.2/1.4 45
Manifold
Pressure
High/Low
3.4/1.4
3.2/1.4
3.7/1.6
3.5/1.5
3.8/1.6
3.6/1.5
3.5/1.5
3.3/1.4
3.8/1.6
3.6/1.5
3.5/1.5
Manifold
Pressure
High/Low
3.5/1.5
3.3/1.4
3.8/1.6
3.6/1.5
3.4/1.4
3.6/1.5
3.4/1.5
3.3/1.4
3.8/1.6
3.6/1.5
3.4/1.4
Manifold
Pressure
High/Low
3.5/1.5
3.2/1.4
3.7/1.6
3.5/1.5
3.8/1.6
3.6/1.5
3.4/1.4
3.2/1.3
3.7/1.5
3.5/1.5
3.3/1.4