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Bryant Gas Furance 315AAV User Manual

Page 45

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45

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)

ALTITUDE RANGE

FT. (M)

AVG. GAS

HEAT VALUE

AT ALTITUDE

(BTUH/CU

FT.)

SPECIFIC GRAVITY OF NATURAL GAS

0.58

0.60

0.62

0.64

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

USA

5001 to

6000

(1524 to

1829)

725

44

3.5/1.7

43

3.2/1.5

43

3.3/1.6

43

3.4/1.6

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

800

46

3.7/1.8

46

3.8/1.8

45

3.8/1.8

44

3.2/1.5

825

46

3.5/1.7

46

3.6/1.7

46

3.7/1.8

46

3.8/1.8

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

ALTITUDE RANGE

FT. (M)

AVG. GAS

HEAT VALUE

AT ALTITUDE

(BTUH/CU FT.)

SPECIFIC GRAVITY OF NATURAL GAS

0.58

0.60

0.62

0.64

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

USA

6001 to

7000

(1829 to

2134)

675

44

3.5/1.7

43

3.2/1.5

43

3.3/1.6

43

3.4/1.6

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

750

46

3.6/1.7

46

3.8/1.8

45

3.7/1.8

45

3.8/1.8

775

46

3.4/1.6

46

3.5/1.7

46

3.6/1.7

46

3.8/1.8

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

ALTITUDE RANGE

FT. (M)

AVG. GAS

HEAT VALUE

AT ALTITUDE

(BTUH/CU FT.)

SPECIFIC GRAVITY OF NATURAL GAS

0.58

0.60

0.62

0.64

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

USA

7001 to

8000

(2134 to

2438)

650

44

3.3/1.6

44

3.4/1.6

44

3.5/1.7

43

3.2/1.5

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

725

47

3.8/1.8

46

3.5/1.7

46

3.6/1.7

46

3.7/1.8

750

47

3.5/1.7

47

3.7/1.8

47

3.8/1.8

46

3.5/1.6

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

ALTITUDE RANGE

FT. (M)

AVG. GAS

HEAT VALUE

AT ALTITUDE

(BTUH/CU FT.)

SPECIFIC GRAVITY OF NATURAL GAS

0.58

0.60

0.62

0.64

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

Orifice

No.

Manifold

Pressure

High/Low

USA

8001 to

9000

(2438 to

2743)

625

45

3.7/1.8

45

3.8/1.8

44

3.3/1.6

44

3.4/1.6

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

700

47

3.5/1.7

47

3.6/1.7

47

3.7/1.8

46

3.4/1.6

725

48

3.7/1.8

48

3.8/1.8

47

3.5/1.7

47

3.6/1.7

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

USA

9001 to

10,000

(2743 to

3048)

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

650

47

3.4/1.6

47

3.6/1.7

47

3.7/1.8

47

3.8/1.8

675

48

3.6/1.7

48

3.8/1.8

47

3.4/1.6

47

3.5/1.7

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

315AA

V