Carrier WeatherMaker 8000 Installation, Start-Up, And Operating Instructions Manual page 15

Table 7—Model 58ZAV Orifice Size and Manifold Pressure for Correct Input
(Tabulated Data Based on 23,000 BTUH Per Burner, Derated 4% per 1000 Ft Above Sea Level)*
AVG GAS
ALTITUDE
HEAT VALUE
RANGE
AT ALTITUDE
(FT)
(BTU/CU FT)
850
875
900
0 925
950
to 975
1000
2000 1025
1050
1075
1100
AVG GAS
ALTITUDE
HEAT VALUE
RANGE
AT ALTITUDE
(FT)
(BTU/CU FT)
U.S.A 775
Altitudes 800
2001 825
to 850
3000 875
or 900
Canada 925
Altitudes 950
2000 975
to 1000
4500 1025
AVG GAS
ALTITUDE
HEAT VALUE
RANGE
AT ALTITUDE
(FT)
(BTU/CU FT)
750
775
800
3001 825
850
to 875
900
4000 925
950
975
1000
AVG GAS
ALTITUDE
HEAT VALUE
RANGE
AT ALTITUDE
(FT)
(BTU/CU FT)
725
750
775
4001 800
825
to 850
875
5000 900
925
950
* For size 135-20 only, input is 22,500 Btuh. Deduct 0.1-in. wc from manifold pressure shown in table. Change orifice size if manifold pressure falls below 3.2-in. wc on
altitudes up to 2000 ft, otherwise change orifice size if manifold pressure falls below 2.0-in. wc.
0.58 0.60
Orifice Manifold Orifice
No. Pressure No.
41 3.6 41
42 3.8 41
42 3.5 42
42 3.4 42
42 3.2 42
43 3.7 43
43 3.5 43
43 3.3 43
43 3.2 43
44 3.5 44
44 3.3 44
0.58 0.60
Orifice Manifold Orifice
No. Pressure No.
42 3.7 42
42 3.4 42
42 3.2 42
43 3.7 43
43 3.5 43
43 3.3 43
43 3.1 43
43 3.0 43
43 2.8 43
43 2.7 43
43 2.6 43
0.58 0.60
Orifice Manifold Orifice
No. Pressure No.
42 3.4 42
42 3.2 42
43 3.7 43
43 3.5 43
43 3.3 43
43 3.1 43
43 2.9 43
43 2.8 43
43 2.6 43
43 2.5 43
43 2.4 43
0.58 0.60
Orifice Manifold Orifice
No. Pressure No.
42 3.2 42
43 3.7 43
43 3.4 43
43 3.2 43
43 3.0 43
43 2.9 43
43 2.7 43
43 2.6 43
43 2.4 43
43 2.3 43
SPECIFIC GRAVITY OF NATURAL GAS
0.62
Manifold Orifice Manifold
Pressure No. Pressure
3.7 41 3.8
3.5 41 3.6
3.7 42 3.8
3.5 42 3.6
3.3 42 3.4
3.8 42 3.2
3.6 43 3.7
3.4 43 3.6
3.3 43 3.4
3.6 43 3.2
3.4 44 3.5
SPECIFIC GRAVITY OF NATURAL GAS
0.62
Manifold Orifice Manifold
Pressure No. Pressure
3.8 41 3.5
3.6 42 3.7
3.3 42 3.5
3.8 42 3.3
3.6 43 3.7
3.4 43 3.5
3.2 43 3.4
3.1 43 3.2
2.9 43 3.0
2.8 43 2.9
2.6 43 2.7
SPECIFIC GRAVITY OF NATURAL GAS
0.62
Manifold Orifice Manifold
Pressure No. Pressure
3.6 42 3.7
3.3 42 3.5
3.8 42 3.2
3.6 43 3.7
3.4 43 3.5
3.2 43 3.3
3.0 43 3.1
2.9 43 3.0
2.7 43 2.8
2.6 43 2.7
2.4 43 2.5
SPECIFIC GRAVITY OF NATURAL GAS
0.62
Manifold Orifice Manifold
Pressure No. Pressure
3.3 42 3.5
3.8 42 3.2
3.6 43 3.7
3.3 43 3.5
3.1 43 3.2
3.0 43 3.1
2.8 43 2.9
2.6 43 2.7
2.5 43 2.6
2.4 43 2.5
15
0.64 0.66
Orifice Manifold Orifice
No. Pressure No.
40 3.6 40
41 3.7 41
41 3.5 41
42 3.7 42
42 3.5 42
42 3.3 42
42 3.2 42
43 3.7 43
43 3.5 43
43 3.3 43
43 3.2 43
0.64 0.66
Orifice Manifold Orifice
No. Pressure No.
41 3.6 41
42 3.8 41
42 3.6 42
42 3.4 42
42 3.2 42
43 3.7 43
43 3.5 43
43 3.3 43
43 3.1 43
43 3.0 43
43 2.8 43
0.64 0.66
Orifice Manifold Orifice
No. Pressure No.
42 3.8 41
42 3.6 42
42 3.3 42
43 3.8 42
43 3.6 43
43 3.4 43
43 3.2 43
43 3.0 43
43 2.9 43
43 2.7 43
43 2.6 43
0.64 0.66
Orifice Manifold Orifice
No. Pressure No.
42 3.6 42
42 3.3 42
43 3.8 42
43 3.6 43
43 3.4 43
43 3.2 43
43 3.0 43
43 2.8 43
43 2.7 43
43 2.5 43
Manifold
Pressure
3.8
3.8
3.6
3.8
3.6
3.4
3.3
3.8
3.6
3.4
3.3
Manifold
Pressure
3.8
3.5
3.7
3.5
3.3
3.8
3.6
3.4
3.2
3.1
2.9
Manifold
Pressure
3.5
3.7
3.4
3.2
3.7
3.5
3.3
3.1
3.0
2.8
2.7
Manifold
Pressure
3.7
3.4
3.2
3.7
3.5
3.3
3.1
2.9
2.8
2.6