MANIFOLDPRESSUREAND ORIFICE SIZE FOR HIGHALTITUDEAPPLICATIONS

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NATURAL

GAS MANIFOLD

PRESSURE

(" w.c.)

 

 

 

 

 

 

..............................................................

FOR THE 50,000, 75,000, 100,000 and 125,000 BTUH MODELS

 

 

 

 

HEATING

 

 

 

 

MEAN

ELEVATION FEET ABOVE SEA LEVEL

 

 

 

 

0 to

2001 to

3001

to

4001 to

5001 to

6001 to

7001 to

VALUE

2000

3000

4000

 

5000

 

6000

7000

8000

at ALTITUDE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BTU/CU. FT,

Orifice

Manifold

Orifice

Manifold

Orifice

Manifold

Orifice Manifold Orifice Manifold Orifice

Manifold

Orifice

Manifold

 

No.

Pressure No.

Pressure No.

Pressure

No.

Pressure

No.

Pressure

No.

Pressure No.

Pressure

700

 

 

 

 

 

 

 

 

 

 

 

 

41

3.7

725

 

 

 

 

 

 

 

 

 

 

41

3.7

41

3.4

750

 

 

 

 

 

 

 

 

 

 

41

3.5

42

3.6

775

 

 

 

 

 

 

 

 

41

3.6

42

3.6

42

3.3

800

 

 

 

 

 

 

41

3.6

42

3,7

42

3,4

42

3.1

825

 

 

 

 

41

3.7

41

3.4

42

3.5

42

3.2

42

2.9

850

 

 

 

 

41

3.5

42

3.6

42

3,3

42

3,0

42

2.8

875

 

 

41

3.6

42

3.6

42

3.4

42

3.1

42

2.8

42

2.6

900

 

 

42

3,7

42

3,4

42

3.2

42

2.9

42

2,7

42

2.5

925

41

3.7

42

3,5

42

3,3

42

3.0

42

2,8

42

2,5

42

2.3

950

41

3.5

42

3.3

42

3.1

42

2.9

42

2,6

42

2.4

43

2.7

975

42

3.7

42

3,2

42

2,9

42

2.7

42

2,5

42

2,3

43

2.6

1000

42

3.5

42

3.0

42

2.8

42

2.6

42

2.4

43

2.7

43

2.4

1050

42

3.2

42

2.7

42

2,5

42

2.3

43

2.6

 

 

 

 

1100

42

2.9

42

2.5

42

2.3

43

2.6

 

 

 

 

 

 

NOTE: Natural gas data is based on 0.60 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI Z223.1-2002/NFPA 54-2002 or National Standard of Canada, Natural Gas And Propane Installation Code CSA B149.1-00.

Ta_i

 

CPG or PROPANE

GAS MANIFOLD PRESSURE (" w.c.)

 

 

................................................................................................................

FOR THE 50,000, 75,000, 100,000 and 125,000 BTUH MODELS

 

 

HEATING

VALUE

 

 

 

MEAN ELEVATION

FEET ABOVE

SEA LEVEL

 

 

at ALTITUDE

0 to

2001

to

3001 to

4001 to

5001 to

6001 to

7001 to

BTU/CU,

FT.

2000

3000

4000

5000

6000

7000

8000

2500

10.0

10.0

 

9.0

10.0

9.4

8.5

10.0

Orifice

Size

#54

#54

 

#54

#55

#55

#55

 

NOTE: Propane data is based on 1.53 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI Z223.1-2002/N FPA 54-2002 or National Standard Of Canada, Natural Gas And Propane Installation Code CSA B149.1-00.

 

NATURAL

GAS MANIFOLD

PRESSURE

(" w.c.)

 

 

 

 

 

 

..............................................................

FOR THE 80,000 BTUH MODELS

 

 

 

 

 

 

 

 

 

HEATING

 

 

 

 

MEAN

ELEVATION FEET ABOVE SEA LEVEL

 

 

 

 

0 to

2001 to

3001

to

4001 to

5001 to

6001 to

7001 to

VALUE

2000

3000

4000

 

5000

 

6000

7000

8000

at ALTITUDE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BTU/CU. FT.

Orifice

Manifold

Orifice

Manifold

Orifice

Manifold

Orifice Manifold Orifice Manifold Orifice

Manifold

Orifice

Manifold

 

No.

Pressure No.

Pressure No.

Pressure

No.

Pressure

No.

Pressure

No.

Pressure No.

Pressure

700

 

 

 

 

 

 

 

 

 

 

 

 

44

3.7

725

 

 

 

 

 

 

 

 

 

 

44

3.7

44

3.4

750

 

 

 

 

 

 

 

 

 

 

44

3,5

44

3.2

775

 

 

 

 

 

 

 

 

44

3.5

44

3.2

44

3.0

800

 

 

 

 

 

 

44

3.6

44

3.3

44

3.0

44

2.8

825

 

 

 

 

44

3,7

44

3.4

44

3,1

44

2,9

44

2.6

850

 

 

 

 

44

3.5

44

3.2

44

2,9

44

2.7

44

2.5

875

 

 

44

3,5

44

3,3

44

3.0

44

2.8

44

2,5

44

2.3

900

 

 

44

3.3

44

3.1

44

2.8

44

2.6

44

2.4

45

2.7

925

44

3.7

44

3,2

44

2,9

44

2.7

44

2.5

44

2,3

45

2.5

950

44

3.5

44

3,0

44

2,8

44

2.6

44

2,4

45

2.6

45

2.4

975

44

3.3

44

2,8

44

2.6

44

2.4

45

2.7

45

2.5

45

2.3

1000

44

3.2

44

2,7

44

2,5

44

2.3

45

2.6

45

2.4

46

2.3

1050

44

2.9

44

2.5

44

2.3

45

2.5

45

2.3

 

 

 

 

1100

44

2.6

45

2.7

45

2.5

45

2.3

 

 

 

 

 

 

NOTE: Natural gas data is based on 0.60 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI Z223.1-2002/NFPA 54-2002 or National Standard of Canada, Natural Gas And Propane Installation Code CSA B149.1-00.

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Page 29 Page 31
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Image 30
Sears N9MP1050B12B1, N9MP2050B12B1 manual Natural, Pressure, For the 50,000, 75,000, 100,000 and 125,000 Btuh Models, Tai
Page 29 Page 31

9MPD100J20B1, N9MP2100J20B1, 9MPD050F12B1, N9MP1100J20B1, N9MP1125J20B1 specifications

The Sears N9MP1075B12B1, N9MPD125L20B1, N9MP1050B12B1, N9MPD080J16B1, and N9MP2125J20B1 are part of the trusted line of gas furnaces manufactured by Sears, specifically designed to deliver reliable heating solutions for residential applications. These models incorporate cutting-edge technology and robust engineering, making them popular choices among homeowners looking for efficiency and comfort.

One of the main features of these models is their high-efficiency operation. With Annual Fuel Utilization Efficiency (AFUE) ratings exceeding 90%, these furnaces convert a significant portion of fuel into usable heat, thereby reducing energy costs. The N9MP series employs a multi-speed blower system that optimizes airflow for enhanced comfort while minimizing noise levels, ensuring a pleasant indoor environment.

The N9MPD125L20B1 and N9MPD080J16B1 variants highlight their adaptability through dual-stage heating capabilities. This technology allows the furnace to adjust its output based on the thermal demands of the home, preventing energy wastage during milder conditions while providing robust heating during extreme cold spells. The two-stage combustion process not only improves comfort but also contributes to lower greenhouse gas emissions.

Durability is another hallmark of these Sears models. With heavy-duty heat exchangers crafted from high-quality materials, they are built to withstand the rigors of regular use. Additionally, the inclusion of advanced safety mechanisms ensures that the system operates securely, reducing potential risks associated with gas furnaces.

The N9MP2125J20B1 model stands out due to its whisper-quiet operation. Homeowners can enjoy a warm home without the disruptive sound commonly associated with traditional heating systems, thanks to the insulated cabinet design and efficient blower operation.

Furthermore, these models come equipped with user-friendly digital thermostats, which allow precise temperature control and programmable settings, enabling homeowners to tailor their heating needs to fit their lifestyle. The compatibility with smart home systems also adds convenience, enabling users to manage their heating remotely, saving even more energy.

In conclusion, the Sears N9MP1075B12B1, N9MPD125L20B1, N9MP1050B12B1, N9MPD080J16B1, and N9MP2125J20B1 gas furnaces exemplify innovation in heating technology. Their energy-efficient designs, advanced features, and durable construction make them reliable choices for homeowners seeking comfort and sustainability in their heating solutions.
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