Bryant 310JAV Furnace User Manual


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Table 11—Orifice Size* And Manifold Pressure For Gas Input Rate (Continued)
(Tabulated Data Based On 21,000 Btuh Per Burner, Derated 4 Percent For Each 1000 Ft Above Sea Level)
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A. Only
5001
to
6000
725 43 3.1 43 3.2 43 3.3 43 3.4
750 43 2.9 43 3.0 43 3.1 43 3.2
775 43 2.7 43 2.8 43 2.9 43 3.0
800 43 2.5 43 2.6 43 2.7 43 2.8
825 43 2.4 43 2.5 43 2.5 43 2.6
850 43 2.2 43 2.3 43 2.4 43 2.5
875 43 2.1 43 2.2 43 2.3 43 2.3
900 43 2.0 43 2.1 43 2.1 43 2.2
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A. Only
6001
to
7000
675 43 3.1 43 3.2 43 3.3 43 3.4
700 43 2.9 43 3.0 43 3.1 43 3.2
725 43 2.7 43 2.8 43 2.9 43 2.9
750 43 2.5 43 2.6 43 2.7 43 2.8
775 43 2.3 43 2.4 43 2.5 43 2.6
800 43 2.2 43 2.3 43 2.3 43 2.4
825 43 2.1 43 2.1 43 2.2 43 2.3
850 48 3.7 43 2.0 43 2.1 43 2.1
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A. Only
7001
to
8000
650 43 2.9 43 3.0 43 3.1 43 3.2
675 43 2.7 43 2.7 43 2.8 43 2.9
700 43 2.5 43 2.6 43 2.6 43 2.7
725 43 2.3 43 2.4 43 2.5 43 2.5
750 43 2.1 43 2.2 43 2.3 43 2.4
775 43 2.0 43 2.1 43 2.2 43 2.2
800 48 3.6 48 3.7 43 2.0 43 2.1
825 48 3.3 48 3.5 48 3.6 48 3.7
ALTITUDE
RANGE
(FT)
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTU/CU FT)
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.60 0.62 0.64
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A. Only
8001
to
9000
625 43 2.7 43 2.7 43 2.8 43 2.9
650 43 2.5 43 2.5 43 2.6 43 2.7
675 43 2.3 43 2.4 43 2.4 43 2.5
700 43 2.1 43 2.2 43 2.3 43 2.3
725 48 3.7 43 2.0 43 2.1 43 2.2
750 48 3.5 48 3.6 48 3.7 43 2.0
775 49 3.8 48 3.4 48 3.5 48 3.6
* Orifice numbers 43 are factory installed
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