Bryant 315AAV Furnace User Manual


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Table 15 -- Orifice Size and Manifold Pressure (In. W.C.) for Gas Input Rate (Con’t.)
(Tabulated Data Based on 21,000 Btuh High--Heat/14,500 Btuh for Low--Heat Per Burner, Derated 4 Percent for Each 1000 Ft.
(305 M) Above Sea level)
ALTITUDE RANGE
FT. (M)
AVG. GAS
HEAT VALUE
AT ALTITUDE
(BTUH/CU
FT.)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
USA
5001 to
6000
(1524 to
1829)
725 44 3.5/1.7 43 3.2/1.5 43 3.3/1.6 43 3.4/1.6
750 44 3.3/1.6 44 3.4/1.6 44 3.5/1.7 43 3.2/1.5
775 45 3.7/1.8 44 3.2/1.5 44 3.3/1.6 44 3.4/1.6
800 46 3.7/1.8 46 3.8/1.8 45 3.8/1.8 44 3.2/1.5
825 46 3.5/1.7 46 3.6/1.7 46 3.7/1.8 46 3.8/1.8
850 47 3.7/1.8 47 3.8/1.8 46 3.5/1.7 46 3.6/1.7
875 47 3.5/1.7 47 3.6/1.7 47 3.7/1.8 46 3.4/1.6
900 48 3.8/1.8 47 3.4/1.6 47 3.5/1.7 47 3.7/1.7
ALTITUDE RANGE
FT. (M)
AVG. GAS
HEAT VALUE
AT ALTITUDE
(BTUH/CU FT.)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
USA
6001 to
7000
(1829 to
2134)
675 44 3.5/1.7 43 3.2/1.5 43 3.3/1.6 43 3.4/1.6
700 44 3.3/1.6 44 3.4/1.6 44 3.5/1.7 43 3.2/1.5
725 45 3.7/1.8 45 3.8/1.8 44 3.3/1.6 44 3.4/1.6
750 46 3.6/1.7 46 3.8/1.8 45 3.7/1.8 45 3.8/1.8
775 46 3.4/1.6 46 3.5/1.7 46 3.6/1.7 46 3.8/1.8
800 47 3.6/1.7 47 3.8/1.8 46 3.4/1.6 46 3.5/1.7
825 47 3.4/1.6 47 3.5/1.7 47 3.6/1.7 47 3.8/1.8
850 48 3.7/1.7 48 3.8/1.8 47 3.4/1.6 47 3.5/1.7
ALTITUDE RANGE
FT. (M)
AVG. GAS
HEAT VALUE
AT ALTITUDE
(BTUH/CU FT.)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
USA
7001 to
8000
(2134 to
2438)
650 44 3.3/1.6 44 3.4/1.6 44 3.5/1.7 43 3.2/1.5
675 45 3.7/1.8 45 3.8/1.8 44 3.3/1.6 44 3.4/1.6
700 46 3.6/1.7 46 3.7/1.8 46 3.8/1.8 45 3.8/1.8
725 47 3.8/1.8 46 3.5/1.7 46 3.6/1.7 46 3.7/1.8
750 47 3.5/1.7 47 3.7/1.8 47 3.8/1.8 46 3.5/1.6
775 48 3.8/1.8 47 3.4/1.6 47 3.6/1.7 47 3.7/1.7
800 48 3.6/1.7 48 3.7/1.8 48 3.8/1.8 47 3.4/1.6
825 48 3.3/1.6 48 3.5/1.6 48 3.6/1.7 48 3.7/1.8
ALTITUDE RANGE
FT. (M)
AVG. GAS
HEAT VALUE
AT ALTITUDE
(BTUH/CU FT.)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
Orifice
No.
Manifold
Pressure
High/Low
USA
8001 to
9000
(2438 to
2743)
625 45 3.7/1.8 45 3.8/1.8 44 3.3/1.6 44 3.4/1.6
650 46 3.6/1.7 46 3.7/1.8 46 3.8/1.8 45 3.8/1.8
675 47 3.8/1.8 46 3.4/1.6 46 3.5/1.7 46 3.7/1.7
700 47 3.5/1.7 47 3.6/1.7 47 3.7/1.8 46 3.4/1.6
725 48 3.7/1.8 48 3.8/1.8 47 3.5/1.7 47 3.6/1.7
750 48 3.5/1.7 48 3.6/1.7 48 3.7/1.8 48 3.8/1.8
775 49 3.8/1.8 48 3.4/1.6 48 3.5/1.7 48 3.6/1.7
USA
9001 to
10,000
(2743 to
3048)
600 46 3.6/1.7 46 3.7/1.8 46 3.8/1.8 45 3.7/1.8
625 47 3.7/1.8 47 3.8/1.8 46 3.5/1.7 46 3.6/1.7
650 47 3.4/1.6 47 3.6/1.7 47 3.7/1.8 47 3.8/1.8
675 48 3.6/1.7 48 3.8/1.8 47 3.4/1.6 47 3.5/1.7
700 48 3.4/1.6 48 3.5/1.7 48 3.6/1.7 48 3.7/1.8
725 49 3.7/1.8 49 3.8/1.8 48 3.4/1.6 48 3.5/1.7
* Orifice numbers 43 are factory installed
315AAV
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