Bryant 312A Installation, Start-Up, Operating And Service And Maintenance Instructions page 43

(Tabulated Data Based on 22,000 Btuh High- -Heat/14,500 Btuh for Low- -Heat per Burner, Derated 4% for Each 1000 Ft Above Sea
AVG. GAS
HEAT VALUE
ALTITUDE RANGE
AT ALTITUDE
(FT)
(BTUH/CU
U.S.A. 6001 to
Only 7000
AVG. GAS
HEAT VALUE
ALTITUDE RANGE
AT ALTITUDE
(FT)
(BTUH/CU
U.S.A. 7001 to
Only 8000
AVG. GAS
HEAT VALUE
ALTITUDE RANGE
AT ALTITUDE
(FT)
(BTUH/CU
U.S.A. 8001 to
Only 9000
AVG. GAS
HEAT VALUE
ALTITUDE RANGE
AT ALTITUDE
(FT)
(BTUH/CU
U.S.A. 9001 to
Only 10,000
* Orifice numbers 43 are factory installed
Table 15 - - Orifice Size and Manifold Pressure for Gas Input Rate (cont.)
0.58
Orifice Manifold
No. Pressure
FT)
675 43 3.4/1.5
700 44 3.6/1.6
725 44 3.4/1.5
750 45 3.8/1.7
775 46 3.7/1.6
800 46 3.5/1.5
825 47 3.7/1.6
850 47 3.5/1.5
0.58
Orifice Manifold
No. Pressure
FT)
650 44 3.6/1.6
675 44 3.3/1.5
700 45 3.8/1.6
725 46 3.7/1.6
750 46 3.4/1.5
775 47 3.6/1.6
800 47 3.4/1.5
825 48 3.7/1.6
0.58
Orifice Manifold
No. Pressure
FT)
625 44 3.3/1.5
650 45 3.7/1.6
675 46 3.6/1.6
700 47 3.8/1.7
725 47 3.6/1.6
750 48 3.8/1.7
775 48 3.6/1.5
0.58
Orifice Manifold
No. Pressure
FT)
600 45 3.7/1.6
625 46 3.6/1.6
650 47 3.8/1.6
675 47 3.5/1.5
700 48 3.7/1.6
725 48 3.5/1.5
Level)
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure No.
43 3.5/1.5 43
43 3.3/1.4 43
44 3.5/1.5 44
44 3.3/1.4 44
45 3.7/1.6 45
46 3.6/1.6 46
46 3.4/1.5 46
47 3.6/1.6 47
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure No.
43 3.2/1.4 43
44 3.5/1.5 44
44 3.2/1.4 44
46 3.8/1.7 45
46 3.6/1.5 46
47 3.8/1.6 46
47 3.5/1.5 47
48 3.8/1.6 47
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure No.
44 3.5/1.5 44
44 3.2/1.4 44
46 3.8/1.6 45
46 3.5/1.5 46
47 3.7/1.6 47
47 3.5/1.5 47
48 3.7/1.6 48
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Orifice Manifold Orifice
No. Pressure No.
45 3.8/1.7 44
46 3.7/1.6 46
46 3.4/1.5 46
47 3.6/1.6 47
48 3.8/1.7 47
48 3.6/1.6 48
43
0.62 0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.6/1.6 43 3.7/1.6
3.4/1.5 43 3.5/1.5
3.6/1.6 43 3.2/1.4
3.4/1.5 44 3.5/1.5
3.8/1.7 44 3.2/1.4
3.8/1.6 45 3.7/1.6
3.5/1.5 46 3.6/1.6
3.8/1.6 46 3.4/1.5
0.62 0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.4/1.5 43 3.5/1.5
3.6/1.6 43 3.2/1.4
3.3/1.4 44 3.4/1.5
3.7/1.6 44 3.2/1.4
3.7/1.6 46 3.8/1.6
3.4/1.5 46 3.6/1.5
3.7/1.6 47 3.8/1.6
3.4/1.5 47 3.6/1.5
0.62 0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.6/1.6 43 3.2/1.4
3.3/1.4 44 3.4/1.5
3.7/1.6 45 3.8/1.7
3.6/1.6 46 3.7/1.6
3.8/1.7 46 3.5/1.5
3.6/1.6 47 3.7/1.6
3.8/1.7 47 3.5/1.5
0.62 0.64
Manifold Orifice Manifold
Pressure No. Pressure
3.3/1.4 44 3.4/1.5
3.8/1.7 45 3.8/1.6
3.6/1.5 46 3.7/1.6
3.7/1.6 46 3.4/1.5
3.5/1.5 47 3.6/1.6
3.7/1.6 48 3.8/1.7