Carrier 58MXA Installation, Start-Up, And Operating Instructions Manual page 38

TABLE 8—MODEL 58MXA ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT (Continued)
(TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2 PERCENT FOR EACH 1000 FT
ALTITUDE AVG GAS
RANGE HEAT VALUE
(FT) (BTU/CU FT)
750
775
800
825
4001
to 850
5000
875
900
925
950
ALTITUDE AVG GAS
RANGE HEAT VALUE
(FT) (BTU/CU FT)
725
750
775
800
825
5001
850
to
875
6000
900
925
950
975
1000
ALTITUDE AVG GAS
RANGE HEAT VALUE
(FT) (BTU/CU FT)
675
700
725
750
6001
to 775
7000
800
825
850
875
* Orifice numbers shown in shading are factory installed.
FOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLY
ABOVE SEA LEVEL)
0.58
Orifice Manifold Orifice
no. Pressure no.
43 3.4 43
44 3.7 44
44 3.5 44
44 3.2 44
45 3.7 45
45 3.5 45
45 3.3 45
45 3.1 45
45 3.0 45
0.58
Orifice Manifold Orifice
no. Pressure no.
43 3.4 43
44 3.6 44
44 3.4 44
44 3.2 44
45 3.6 45
45 3.4 45
45 3.2 45
45 3.0 45
45 2.9 45
45 2.7 45
45 2.6 45
45 2.5 45
0.58
Orifice Manifold Orifice
no. Pressure no.
43 3.6 43
44 3.8 43
44 3.6 44
44 3.3 44
45 3.8 44
45 3.5 45
45 3.3 45
45 3.1 45
45 3.0 45
SPECIFIC GRAVITY OF NATURAL GAS
0.60 0.62
Manifold Orifice Manifold
Pressure no. Pressure
3.5 43 3.7
3.8 43 3.4
3.6 44 3.7
3.4 44 3.5
3.8 44 3.3
3.6 45 3.7
3.4 45 3.5
3.2 45 3.3
3.1 45 3.2
SPECIFIC GRAVITY OF NATURAL GAS
0.60 0.62
Manifold Orifice Manifold
Pressure no. Pressure
3.5 43 3.6
3.7 43 3.4
3.5 44 3.6
3.3 44 3.4
3.7 44 3.2
3.5 45 3.6
3.3 45 3.4
3.1 45 3.3
3.0 45 3.1
2.8 45 2.9
2.7 45 2.8
2.5 45 2.6
SPECIFIC GRAVITY OF NATURAL GAS
0.60 0.62
Manifold Orifice Manifold
Pressure no. Pressure
3.7 43 3.8
3.4 43 3.6
3.7 44 3.8
3.4 44 3.6
3.2 44 3.3
3.7 45 3.8
3.4 45 3.6
3.2 45 3.4
3.1 45 3.2
38
0.64 0.66
Orifice Manifold Orifice
no. Pressure no.
43 3.8 42
43 3.5 43
44 3.8 43
44 3.6 44
44 3.4 44
44 3.2 44
45 3.6 45
45 3.4 45
45 3.3 45
0.64 0.66
Orifice Manifold Orifice
no. Pressure no.
43 3.7 43
43 3.5 43
44 3.7 43
44 3.5 44
44 3.3 44
45 3.8 44
45 3.6 45
45 3.4 45
45 3.2 45
45 3.0 45
45 2.9 45
45 2.7 45
0.64 0.66
Orifice Manifold Orifice
no. Pressure no.
42 3.2 42
43 3.7 43
43 3.4 43
44 3.7 44
44 3.4 44
44 3.2 44
45 3.7 45
45 3.5 45
45 3.3 45
Manifold
Pressure
3.2
3.7
3.4
3.7
3.5
3.3
3.8
3.6
3.4
Manifold
Pressure
3.8
3.6
3.4
3.6
3.4
3.2
3.7
3.5
3.3
3.1
2.9
2.8
Manifold
Pressure
3.3
3.8
3.5
3.8
3.5
3.3
3.8
3.6
3.4