International comfort products F8MVL Installation Instructions Manual page 45

Table 15 – Orifice Size and Manifold Pressure (In. W.C.) for Gas Input Rate
(Tabulated Data Based on 21,000 Btuh High−Heat/14,500 Btuh for Low−Heat Per Burner, Derated 4 Percent for Each 1000 Ft.
AVG. GAS
HEAT VALUE
ALTITUDE RANGE
AT ALTITUDE
FT. (M)
(BTUH/CU FT.)
900
925
950
975
0 to
USA 2000 1000
(0 to 610)
1025
1050
1075
1100
AVG. GAS
ALTITUDE RANGE HEAT VALUE
AT ALTITUDE
FT. (M)
(BTUH/CU FT.)
800
825
850
2001 to 875
3000 (610
USA 900
to 914)
925
950
975
1000
AVG. GAS
ALTITUDE RANGE HEAT VALUE
AT ALTITUDE
FT. (M)
(BTUH/CU FT.)
775
800
825
3001 to
850
USA 4000 (914
875
to 1219)
900
925
950
AVG. GAS
HEAT VALUE
ALTITUDE RANGE
AT ALTITUDE
FT. (M)
(BTUH/CU FT.)
750
775
800
4001 to
5000 825
USA
(1219 to
850
1524)
875
900
925
AVG. GAS
HEAT VALUE
ALTITUDE RANGE
AT ALTITUDE
FT. (M)
(BTUH/CU FT.)
725
750
775
5001 to
6000 800
USA
(1524 to
825
1829)
850
875
900
441 01 2122 01
(305 M) Above Sea level)
0.58
Manifold
Orifice Orifice
Pressure
No. No.
High/Low
42 3.2/1.5 42
43 3.7/1.8 43
43 3.5/1.7 43
43 3.3/1.6 43
44 3.6/1.7 43
44 3.4/1.6 44
44 3.3/1.6 44
45 3.8/1.8 44
46 3.8/1.8 45
0.58
Manifold
Orifice Orifice
Pressure
No. No.
High/Low
43 3.8/1.8 42
43 3.5/1.7 43
43 3.3/1.6 43
43 3.2/1.5 43
44 3.4/1.6 44
44 3.2/1.5 44
45 3.7/1.8 45
46 3.7/1.8 46
46 3.5/1.7 46
0.58
Manifold
Orifice Orifice
Pressure
No. No.
High/Low
43 3.5/1.7 43
43 3.3/1.6 43
44 3.6/1.7 43
44 3.4/1.6 44
45 3.8/1.8 44
46 3.8/1.8 45
46 3.6/1.7 46
46 3.4/1.6 46
0.58
Manifold
Orifice Orifice
Pressure
No. No.
High/Low
43 3.3/1.6 43
44 3.6/1.7 43
44 3.3/1.6 44
45 3.8/1.8 44
46 3.8/1.8 45
46 3.5/1.7 46
47 3.8/1.8 46
47 3.6/1.7 47
0.58
Manifold
Orifice Orifice
Pressure
No. No.
High/Low
44 3.5/1.7 43
44 3.3/1.6 44
45 3.7/1.8 44
46 3.7/1.8 46
46 3.5/1.7 46
47 3.7/1.8 47
47 3.5/1.7 47
48 3.8/1.8 47
Specifications are subject to change without notice.
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Manifold
Orifice
Pressure
No.
High/Low
3.3/1.6 42
3.8/1.8 42
3.6/1.7 43
3.4/1.6 43
3.3/1.6 43
3.6/1.7 43
3.4/1.6 44
3.2/1.5 44
3.7/1.8 44
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Manifold
Orifice
Pressure
No.
High/Low
3.2/1.5 42
3.7/1.7 43
3.5/1.6 43
3.3/1.6 43
3.5/1.7 43
3.3/1.6 44
3.8/1.8 44
3.8/1.8 45
3.6/1.7 46
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Manifold
Orifice
Pressure
No.
High/Low
3.7/1.7 43
3.4/1.6 43
3.2/1.5 43
3.5/1.7 44
3.3/1.6 44
3.8/1.8 44
3.7/1.8 45
3.5/1.7 46
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Manifold
Orifice
Pressure
No.
High/Low
3.4/1.6 43
3.2/1.5 43
3.4/1.6 44
3.2/1.5 44
3.7/1.8 45
3.7/1.7 46
3.5/1.7 46
3.7/1.8 47
SPECIFIC GRAVITY OF NATURAL GAS
0.60
Manifold
Orifice
Pressure
No.
High/Low
3.2/1.5 43
3.4/1.6 44
3.2/1.5 44
3.8/1.8 45
3.6/1.7 46
3.8/1.8 46
3.6/1.7 47
3.4/1.6 47
0.62 0.64
Manifold
Orifice
Pressure
No.
High/Low
3.4/1.6 42
3.2/1.5 42
3.7/1.8 43
3.5/1.7 43
3.4/1.6 43
3.2/1.5 43
3.5/1.7 43
3.3/1.6 44
3.2/1.5 44
0.62 0.64
Manifold
Orifice
Pressure
No.
High/Low
3.3/1.6 42
3.8/1.8 42
3.6/1.7 43
3.4/1.6 43
3.2/1.5 43
3.5/1.6 44
3.3/1.6 44
3.8/1.8 44
3.8/1.8 45
0.62 0.64
Manifold
Orifice
Pressure
No.
High/Low
3.8/1.8 42
3.5/1.7 43
3.3/1.6 43
3.6/1.7 43
3.4/1.6 44
3.2/1.5 44
3.7/1.8 45
3.7/1.7 46
0.62 0.64
Manifold
Orifice
Pressure
No.
High/Low
3.5/1.7 43
3.3/1.6 43
3.6/1.7 43
3.4/1.6 44
3.8/1.8 44
3.8/1.8 45
3.6/1.7 46
3.8/1.8 46
0.62 0.64
Manifold
Orifice
Pressure
No.
High/Low
3.3/1.6 43
3.5/1.7 43
3.3/1.6 44
3.8/1.8 44
3.7/1.8 46
3.5/1.7 46
3.7/1.8 46
3.5/1.7 47
Manifold
Pressure
High/Low
3.5/1.7
3.3/1.6
3.8/1.8
3.7/1.7
3.5/1.7
3.3/1.6
3.2/1.5
3.4/1.6
3.3/1.6
Manifold
Pressure
High/Low
3.4/1.6
3.2/1.5
3.7/1.8
3.5/1.7
3.3/1.6
3.6/1.7
3.4/1.6
3.2/1.5
3.7/1.8
Manifold
Pressure
High/Low
3.2/1.5
3.7/1.7
3.4/1.6
3.2/1.5
3.5/1.7
3.3/1.6
3.8/1.8
3.8/1.8
Manifold
Pressure
High/Low
3.6/1.7
3.4/1.6
3.2/1.5
3.5/1.6
3.3/1.6
3.7/1.8
3.7/1.8
3.5/1.7
Manifold
Pressure
High/Low
3.4/1.6
3.2/1.5
3.4/1.6
3.2/1.5
3.8/1.8
3.6/1.7
3.4/1.6
3.7/1.7
45