Carrier 58MSA040-08 Installation, Start-Up, And Operating Instructions Manual page 40

Table11--Mode{
g8MSA Orifice Size and Manifold Pressure for Correct input
(Tabulated Data Based on 20,000 Btuh per Burner, Derated 2% for Each 1000 Ft Above Sea Level)*
o
7
o
7
C
o
<
ALTITUDE
RANGE
(FT)
to
20OO
O%
derate
ALTITUDE
RANGE
(FT)
U.S.A.
Altitudes
200i to
3000
or
Canada
Altitudes
2001 to
4500
5%
derate
ALTITUDE
RANGE
(FT)
300i
to
4000
7%
derate
AVG GAS
NEAT VALUE
AT ALTITUDE
(BTUICU FT)
85O
875
9OO
925
95O
975
1000
1025
1050
1075
1t00
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTUICU FT)
775
8O0
825
850
875
90O
925
950
975
1000
1025
AVG GAS
HEAT VALUE
AT ALTITUDE
(BTUICU FT)
750
775
80O
825
85O
875
9OO
925
950
975
iO00
0.58
Orifice Manifotd
No. Pressure
43 3.7
43 3.5
44 3.7
44 3.5
44 3.4
44 3.2
45 3.7
45 3.5
45 3.3
45 3.2
47 3.6
SPECIFIC GRAVITY OF NATURAL GAS
0.50 0.82
Orifice Manifotd Orifice Manifold
No. Pressure No. Pressure
43 3.8 42 3.2
43 3.6 43 3.7
43 3.4 43 3.5
44 3.7 44 3.8
44 3.5 44 3.6
44 3.3 44 3.4
45 3.8 44 3.2
45 3.5 45 3.7
45 3.4 45 3.5
45 3.3 45 3.4
47 3.7 45 3.2
0.64 0.55
Orifice Manifold Orifice Manifold
No. Pressure No. Pressure
42 3.3 42 3.4
43 3.8 42 3.2
43 3.6 43 3.7
43 3.4 43 3.5
44 3.7 44 3.8
44 3.5 44 3.6
44 3.4 44 3.5
44 3.2 44 3.3
45 3.7 45 3.8
45 3.5 45 3.5
45 3.4 45 3.5
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.50 0.52
Orifice Manifotd Orifice Manifold Orifice Manifotd
No. Pressure No. Pressure No. Pressure
43 3.8 42 3.2 42 3.3
43 3.5 43 3.7 43 3.8
44 3.8 43 3.4 43 3.6
44 3.6 44 3.7 44 3.8
44 3.4 44 3.5 44 3.6
44 3.2 44 3.3 44 3.4
45 3.7 45 3.8 44 3.2
45 3.5 45 3.5 45 3.7
45 3.3 45 3.4 45 3.5
45 3.1 45 3.2 45 3.4
45 3.0 45 3.t 45 3.2
0.64 0.55
Orifice Manifold Orifice Manifold
No. Pressure No. Pressure
42 3.4 42 3.5
42 3.2 42 3.3
43 3.7 43 3.8
43 3.5 43 3.6
44 3.7 43 3.4
44 3.5 44 3.6
44 3.3 44 3.4
48 3.8 44 3.3
45 3.5 45 3.8
45 3.5 45 3.5
45 3.3 45 3.4
SPECIFIC GRAVITY OF NATURAL GAS
0.58 0.50 0.52
Orifice Manifold Orifice Manifold Orifice Manifold
No. Pressure No. Pressure No. Pressure
43 3.7 43 3.8 42 3.3
43 3.5 43 3.6 43 3.7
44 3.7 43 3.4 43 3.5
44 3.5 44 3.6 44 3.8
44 3.3 44 3.4 44 3.5
45 3.8 44 3.2 44 3.3
45 3.5 45 3.7 45 3.8
45 3.4 45 3.5 45 3.5
45 3.2 45 3.3 45 3.4
45 3.0 45 3.2 45 3.3
45 2.9 45 3.0 45 3.t
0.64 0.55
Orifice Manifold Orifice Manifold
No. Pressure No. Pressure
42 3.4 42 3.5
43 3.8 42 3.2
43 3.6 43 3.7
43 3.4 43 3.5
44 3.7 44 3.8
44 3.5 44 3.6
44 3.3 44 3.4
45 3.7 44 3.2
45 3.5 45 3.7
45 3.4 45 3.5
45 3.2 45 3.3
_Odfice numbers 45 are factory installed.
Percents of derate are based on midpoints of U.S. altitude ranges.
4O