Bryant 120 Furnace User Manual


  Open as PDF
of 58
 
43
Table 15 -- Orifice Size and Manifold Pressure for Gas Input Rate (cont.)
(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
Level)
ALTITUDE RANGE
(FT)
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
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A.
Only
6001 to
7000
675 43 3.4/1.5 43 3.5/1.5 43 3.6/1.6 43 3.7/1.6
700 44 3.6/1.6 43 3.3/1.4 43 3.4/1.5 43 3.5/1.5
725 44 3.4/1.5 44 3.5/1.5 44 3.6/1.6 43 3.2/1.4
750 45 3.8/1.7 44 3.3/1.4 44 3.4/1.5 44 3.5/1.5
775 46 3.7/1.6 45 3.7/1.6 45 3.8/1.7 44 3.2/1.4
800 46 3.5/1.5 46 3.6/1.6 46 3.8/1.6 45 3.7/1.6
825 47 3.7/1.6 46 3.4/1.5 46 3.5/1.5 46 3.6/1.6
850 47 3.5/1.5 47 3.6/1.6 47 3.8/1.6 46 3.4/1.5
ALTITUDE RANGE
(FT)
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
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A.
Only
7001 to
8000
650 44 3.6/1.6 43 3.2/1.4 43 3.4/1.5 43 3.5/1.5
675 44 3.3/1.5 44 3.5/1.5 44 3.6/1.6 43 3.2/1.4
700 45 3.8/1.6 44 3.2/1.4 44 3.3/1.4 44 3.4/1.5
725 46 3.7/1.6 46 3.8/1.7 45 3.7/1.6 44 3.2/1.4
750 46 3.4/1.5 46 3.6/1.5 46 3.7/1.6 46 3.8/1.6
775 47 3.6/1.6 47 3.8/1.6 46 3.4/1.5 46 3.6/1.5
800 47 3.4/1.5 47 3.5/1.5 47 3.7/1.6 47 3.8/1.6
825 48 3.7/1.6 48 3.8/1.6 47 3.4/1.5 47 3.6/1.5
ALTITUDE RANGE
(FT)
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
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A.
Only
8001 to
9000
625 44 3.3/1.5 44 3.5/1.5 44 3.6/1.6 43 3.2/1.4
650 45 3.7/1.6 44 3.2/1.4 44 3.3/1.4 44 3.4/1.5
675 46 3.6/1.6 46 3.8/1.6 45 3.7/1.6 45 3.8/1.7
700 47 3.8/1.7 46 3.5/1.5 46 3.6/1.6 46 3.7/1.6
725 47 3.6/1.6 47 3.7/1.6 47 3.8/1.7 46 3.5/1.5
750 48 3.8/1.7 47 3.5/1.5 47 3.6/1.6 47 3.7/1.6
775 48 3.6/1.5 48 3.7/1.6 48 3.8/1.7 47 3.5/1.5
ALTITUDE RANGE
(FT)
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
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
Orifice
No.
Manifold
Pressure
U.S.A.
Only
9001 to
10,000
600 45 3.7/1.6 45 3.8/1.7 44 3.3/1.4 44 3.4/1.5
625 46 3.6/1.6 46 3.7/1.6 46 3.8/1.7 45 3.8/1.6
650 47 3.8/1.6 46 3.4/1.5 46 3.6/1.5 46 3.7/1.6
675 47 3.5/1.5 47 3.6/1.6 47 3.7/1.6 46 3.4/1.5
700 48 3.7/1.6 48 3.8/1.7 47 3.5/1.5 47 3.6/1.6
725 48 3.5/1.5 48 3.6/1.6 48 3.7/1.6 48 3.8/1.7
* Orifice numbers 43 are factory installed
312A
 previous next