Table 15 - Orifice Size and Manifold Pressure (In. W.C.) for Gas Input Rate (Con’t.)

(Tabulated Data Based on 21,000 Btuh High-Heat/14,500 Btuh for Low-Heat Per Burner, Derated 4 Percent for Each 1000 Ft.

(305 M) Above Sea level)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AVG. GAS

 

 

 

SPECIFIC GRAVITY OF NATURAL GAS

 

 

 

 

 

 

HEAT VALUE

 

 

 

 

 

 

 

 

 

 

 

 

ALTITUDE RANGE

 

0.58

 

0.60

 

0.62

 

0.64

 

FT. (M)

AT ALTITUDE

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

 

(BTUH/CU

 

Pressure

 

Pressure

 

Pressure

 

Pressure

 

 

 

No.

 

No.

 

No.

 

No.

 

 

 

 

FT.)

 

High/Low

 

High/Low

 

High/Low

 

High/Low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

725

44

 

3.5/1.7

43

 

3.2/1.5

43

 

3.3/1.6

43

 

3.4/1.6

 

 

5001 to

750

44

 

3.3/1.6

44

 

3.4/1.6

44

 

3.5/1.7

43

 

3.2/1.5

 

 

775

45

 

3.7/1.8

44

 

3.2/1.5

44

 

3.3/1.6

44

 

3.4/1.6

 

 

6000

 

 

 

 

 

 

 

 

 

 

 

 

 

USA

800

46

 

3.7/1.8

46

 

3.8/1.8

45

 

3.8/1.8

44

 

3.2/1.5

 

(1524 to

825

46

 

3.5/1.7

46

 

3.6/1.7

46

 

3.7/1.8

46

 

3.8/1.8

 

 

 

 

 

 

 

 

1829)

850

47

 

3.7/1.8

47

 

3.8/1.8

46

 

3.5/1.7

46

 

3.6/1.7

 

 

 

875

47

 

3.5/1.7

47

 

3.6/1.7

47

 

3.7/1.8

46

 

3.4/1.6

 

 

 

900

48

 

3.8/1.8

47

 

3.4/1.6

47

 

3.5/1.7

47

 

3.7/1.7

 

 

 

AVG. GAS

 

 

 

SPECIFIC GRAVITY OF NATURAL GAS

 

 

 

ALTITUDE RANGE

HEAT VALUE

 

0.58

 

0.60

 

0.62

 

0.64

 

FT. (M)

AT ALTITUDE

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

 

 

Pressure

 

Pressure

 

Pressure

 

Pressure

 

 

 

(BTUH/CU FT.)

No.

 

No.

 

No.

 

No.

 

 

 

 

 

High/Low

 

High/Low

 

High/Low

 

High/Low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

675

44

 

3.5/1.7

43

 

3.2/1.5

43

 

3.3/1.6

43

 

3.4/1.6

 

 

6001 to

700

44

 

3.3/1.6

44

 

3.4/1.6

44

 

3.5/1.7

43

 

3.2/1.5

 

 

725

45

 

3.7/1.8

45

 

3.8/1.8

44

 

3.3/1.6

44

 

3.4/1.6

USA

 

7000

750

46

 

3.6/1.7

46

 

3.8/1.8

45

 

3.7/1.8

45

 

3.8/1.8

 

(1829 to

775

46

 

3.4/1.6

46

 

3.5/1.7

46

 

3.6/1.7

46

 

3.8/1.8

 

 

 

 

 

 

 

 

2134)

800

47

 

3.6/1.7

47

 

3.8/1.8

46

 

3.4/1.6

46

 

3.5/1.7

 

 

 

825

47

 

3.4/1.6

47

 

3.5/1.7

47

 

3.6/1.7

47

 

3.8/1.8

 

 

 

850

48

 

3.7/1.7

48

 

3.8/1.8

47

 

3.4/1.6

47

 

3.5/1.7

 

 

 

AVG. GAS

 

 

 

SPECIFIC GRAVITY OF NATURAL GAS

 

 

 

ALTITUDE RANGE

HEAT VALUE

 

0.58

 

0.60

 

0.62

 

0.64

 

FT. (M)

AT ALTITUDE

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

 

 

Pressure

 

Pressure

 

Pressure

 

Pressure

 

 

 

(BTUH/CU FT.)

No.

 

No.

 

No.

 

No.

 

 

 

 

 

High/Low

 

High/Low

 

High/Low

 

High/Low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

650

44

 

3.3/1.6

44

 

3.4/1.6

44

 

3.5/1.7

43

 

3.2/1.5

 

 

7001 to

675

45

 

3.7/1.8

45

 

3.8/1.8

44

 

3.3/1.6

44

 

3.4/1.6

 

 

700

46

 

3.6/1.7

46

 

3.7/1.8

46

 

3.8/1.8

45

 

3.8/1.8

 

 

8000

 

 

 

 

 

 

 

 

 

 

 

 

 

USA

725

47

 

3.8/1.8

46

 

3.5/1.7

46

 

3.6/1.7

46

 

3.7/1.8

 

(2134 to

750

47

 

3.5/1.7

47

 

3.7/1.8

47

 

3.8/1.8

46

 

3.5/1.6

 

 

 

 

 

 

 

 

2438)

775

48

 

3.8/1.8

47

 

3.4/1.6

47

 

3.6/1.7

47

 

3.7/1.7

 

 

 

800

48

 

3.6/1.7

48

 

3.7/1.8

48

 

3.8/1.8

47

 

3.4/1.6

 

 

 

825

48

 

3.3/1.6

48

 

3.5/1.6

48

 

3.6/1.7

48

 

3.7/1.8

 

 

 

AVG. GAS

 

 

 

SPECIFIC GRAVITY OF NATURAL GAS

 

 

 

ALTITUDE RANGE

 

0.58

 

0.60

 

0.62

 

0.64

HEAT VALUE

 

 

 

 

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

Orifice

 

Manifold

 

FT. (M)

AT ALTITUDE

 

 

 

 

 

 

Pressure

 

Pressure

 

Pressure

 

Pressure

 

 

 

(BTUH/CU FT.)

No.

 

No.

 

No.

 

No.

 

 

 

 

 

High/Low

 

High/Low

 

High/Low

 

High/Low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

625

45

3.7/1.8

45

3.8/1.8

44

3.3/1.6

44

3.4/1.6

 

 

8001 to

650

46

3.6/1.7

46

3.7/1.8

46

3.8/1.8

45

3.8/1.8

 

 

675

47

3.8/1.8

46

3.4/1.6

46

3.5/1.7

46

3.7/1.7

 

9000

USA

700

47

3.5/1.7

47

3.6/1.7

47

3.7/1.8

46

3.4/1.6

 

(2438 to

 

 

725

48

3.7/1.8

48

3.8/1.8

47

3.5/1.7

47

3.6/1.7

 

2743)

 

750

48

3.5/1.7

48

3.6/1.7

48

3.7/1.8

48

3.8/1.8

 

 

 

775

49

3.8/1.8

48

3.4/1.6

48

3.5/1.7

48

3.6/1.7

 

 

9001 to

600

46

3.6/1.7

46

3.7/1.8

46

3.8/1.8

45

3.7/1.8

 

 

625

47

3.7/1.8

47

3.8/1.8

46

3.5/1.7

46

3.6/1.7

 

10,000

 

 

 

 

 

 

 

 

 

USA

650

47

3.4/1.6

47

3.6/1.7

47

3.7/1.8

47

3.8/1.8

 

(2743 to

675

48

3.6/1.7

48

3.8/1.8

47

3.4/1.6

47

3.5/1.7

 

 

 

3048)

700

48

3.4/1.6

48

3.5/1.7

48

3.6/1.7

48

3.7/1.8

 

 

 

725

49

3.7/1.8

49

3.8/1.8

48

3.4/1.6

48

3.5/1.7

* Orifice numbers 43 are factory installed

315AAV

45

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Image 45
Bryant 315AAV instruction manual AT Altitude