Bryant 352AAV Installation, Start-Up, And Operating Instructions Manual page 55

Table 15 – Model 352AAV Orifice Size and High/Low-Heat Manifold Pressures for Correct Inputs
ALTITUDE AVG GAS
RANGE HEAT VALUE
FT (M) (BTU/CU FT)
850
875
900
925
0 to
2000 950
(0 to
975
610)
1000
0%
derate
1025
1050
1075
1100
ALTITUDE AVG GAS
RANGE HEAT VALUE
FT (M) (BTU/CU FT)
775
U.S.
Altitudes
800
2001
825
to 3000
(610 to
850
914)
875
or
Canada 900
Altitudes
925
2001 to
950
4500
(610 to
975
1371)
1000
5%
derate
1025
ALTITUDE AVG GAS
RANGE HEAT VALUE
FT (M) (BTU/CU FT)
750
775
800
825
3001 to
850
4000
(914 to
875
1219)
900
7%
derate
925
950
975
1000
* Orifice numbers shown in shading are factory installed.
NOTE: Percents of derate are based on midpoints of U.S. altitude ranges.
for Use with 060 Through 120 Size Furnaces Only
(Tabulated Data Based on 20,000/13,000 Btuh per Burner,
Derated 2 Percent for Each 1000 ft (305 M)Above Sea Level)*
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60
Orifice Manifold Orifice
no. Pressure no. Pressure
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
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60
Orifice Manifold Orifice Manifold
no. Pressure no. Pressure
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
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60
Orifice Manifold Orifice Manifold
no. Pressure no. Pressure
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
0.62
Manifold Orifice Manifold
no. Pressure
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
0.62
Orifice Manifold
no. Pressure
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
0.62
Orifice Manifold
no. Pressure
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 45 3.7/1.6
55
0.64 0.66
Orifice Manifold Orifice
no. Pressure no. Pressure
42 3.3/1.4 42
43 3.8/12.6 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
Orifice Manifold Orifice
no. Pressure no.
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
Orifice Manifold Orifice
no. Pressure no.
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
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
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
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