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AIRFLOW DATA

UPFLOW / HORIZONTAL GAS FURNACES

Model

Number

Heating

Input

(Btuh)

Motor

Speed

External Static Pressure (Inches Water Column)

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

CFM

Rise

CFM

Rise

CFM

Rise

CFM

Rise

CFM

Rise

CFM

Rise

CFM

Rise

CFM

Rise

SA045(†)-23A

Bottom Retur

n

45,000

High*

1,260

26

1,205

28

1,145

29

1,080

31

1,025

33

960

35

890

37

825

40

Med-High

955

35

950

35

940

35

935

36

925

36

860

39

800

42

725

46

Med-Low**

825

40

800

42

760

44

730

46

690

48

650

51

600

56

530

63

Low

655

51

630

53

610

55

580

57

550

61

520

64

480

69

435

77

SA045(†)-23A

Side Retur

n

45,000

High*

1,350

25

1,290

26

1,225

27

1,155

29

1,100

30

1,025

33

950

35

885

38

Med-High

1,025

33

1,015

33

1,005

33

1,000

33

990

34

920

36

855

39

775

43

Med-Low**

885

38

855

39

815

41

780

43

740

45

695

48

640

52

565

59

Low

700

48

675

49

655

51

620

54

590

56

555

60

515

65

465

72

SA054(†)-23A

Bottom Retur

n

54,000

High*

1,260

32

1,205

33

1,145

35

1,080

37

1,025

39

960

42

890

45

825

48

Med-High**

955

42

950

42

940

43

935

43

925

43

860

47

800

50

725

55

Med-Low

825

48

800

50

760

53

730

55

690

58

650

62

600

67

530

75

Low

655

61

630

63

610

66

580

69

550

73

520

77

480

83

435

92

SA054(†)-23A

Side Retur

n

54,000

High*

1,350

30

1,290

31

1,225

33

1,155

35

1,100

36

1,025

39

950

42

885

45

Med-High**

1,025

39

1,015

39

1,005

40

1,000

40

990

40

920

43

855

47

775

52

Med-Low

885

45

855

47

815

49

780

51

740

54

695

58

640

63

565

71

Low

700

57

675

59

655

61

620

65

590

68

555

72

515

78

465

86

SA072(†)-24B

Bottom Retur

n

72,000

High*

1,685

32

1,640

33

1,605

33

1,565

34

1,515

35

1,475

36

1,415

38

1,345

40

Med-High

1,330

40

1,295

41

1,275

42

1,245

43

1,215

44

1,185

45

1,135

47

1,070

50

Med-Low**

1,175

45

1,155

46

1,125

47

1,100

48

1,075

50

1,045

51

1,010

53

955

56

Low

930

57

895

60

885

60

850

63

825

65

800

67

770

69

740

72

SA072(†)-24B

Side Retur

n

72,000

High*

1,770

30

1,720

31

1,685

32

1,645

32

1,590

34

1,550

34

1,485

36

1,415

38

Med-High

1,400

38

1,360

39

1,340

40

1,310

41

1,275

42

1,245

43

1,190

45

1,125

47

Med-Low**

1,235

43

1,215

44

1,180

45

1,155

46

1,130

47

1,100

48

1,060

50

1,005

53

Low

975

55

940

57

930

57

890

60

865

62

840

63

810

66

775

69

SA090(†)-24B

Bottom Retur

n

90,000

High*

1,610

41

1,575

42

1,530

44

1,485

45

1,440

46

1,385

48

1,340

50

1,275

52

Med-High**

1,295

51

1,260

53

1,235

54

1,220

55

1,175

57

1,135

59

1,095

61

1,015

66

Med-Low

1,155

58

1,130

59

1,100

61

1,070

62

1,035

64

1,015

66

965

69

920

72

Low

880

76

860

78

830

80

800

83

765

87

740

90

675

99

660

101

SA090(†)-24B

Side Retur

n

90,000

High*

1,690

39

1,655

40

1,610

41

1,560

43

1,510

44

1,455

46

1,405

47

1,340

50

Med-High**

1,360

49

1,325

50

1,300

51

1,280

52

1,235

54

1,190

56

1,150

58

1,065

63

Med-Low

1,215

55

1,190

56

1,155

58

1,125

59

1,090

61

1,065

63

1,015

66

965

69

Low

925

72

900

74

870

77

840

79

800

83

775

86

710

94

695

96

SA072(†)-35C

Bottom Retur

n

72,000

High*

1,950

27

1,865

29

1,790

30

1,715

31

1,630

33

1,550

34

1,475

36

1,390

38

Med-High

1,860

29

1,780

30

1,710

31

1,635

33

1,575

34

1,500

36

1,415

38

1,325

40

Med-Low**

1,300

41

1,240

43

1,200

44

1,160

46

1,120

48

1,065

50

995

54

910

59

Low

1,165

46

1,115

48

1,060

50

1,025

52

985

54

940

57

890

60

825

65

SA072(†)-35C

Side Retur

n

72,000

High*

2,030

26

1,940

27

1,860

29

1,785

30

1,695

31

1,615

33

1,535

35

1,445

37

Med-High

1,935

28

1,850

29

1,780

30

1,700

31

1,340

40

1,560

34

1,470

36

1,380

39

Med-Low**

1,350

40

1,290

41

1,250

43

1,205

44

1,165

46

1,110

48

1,035

52

945

56

Low

1,215

44

1,160

46

1,105

48

1,065

50

1,025

52

980

54

925

58

860

62

SA072(†)-35C

Side + Bottom

or 2 Sides

72,000

High*

2,050

26

1,960

27

1,880

28

1,800

30

1,710

31

1,630

33

1,550

34

1,460

37

Med-High

1,955

27

1,870

29

1,800

30

1,715

31

1,655

32

1,575

34

1,485

36

1,390

38

Med-Low**

1,365

39

1,300

41

1,260

42

1,220

44

1,175

45

1,120

48

1,045

51

955

56

Low

1,225

44

1,170

46

1,115

48

1,075

50

1,035

52

985

54

935

57

865

62

Table 2. *SA - 80% AFUE, Single Stage, Upfl ow/Horizontal Gas Furnaces

Summary of Contents for 045C-23ASA

Page 1: ...future reference GAS FURNACES Single Stage High Efficiency Furnaces Installation Instructions SA Upflow Horizontal Model SK Downflow Model 80 AFUE DO NOT DESTROY KEEP IN A SAFE PLACE FOR FUTURE REFERE...

Page 2: ...n Air Inlet 9 Bottom Return Air Inlet 9 Horizontal Installation 9 Bottom Panel Removal 10 Downflow Installation 10 Installation on a Concrete Slab 10 VENTING REQUIREMENTS 12 Category I Venting 12 Hori...

Page 3: ...naces 24 Figure 16 Downflow Furnaces 25 Airflow Data 26 Table 2 Upflow Horizontal Gas Furnaces 26 Table 3 Downflow Gas Furnaces 28 Electrical Information 29 Table 4 Wire length and Voltage Specs 29 Ta...

Page 4: ...ting outside the space containing the furnace This furnace may be used for temporary heating of buildings or structures under construction See the guidelines listed on page 5 Agas firedfurnaceforinsta...

Page 5: ...equires redundant inspections Serial numbers for furnaces used during construction must be submitted in writing fax and email also acceptable This information will be used to track the long term affec...

Page 6: ...ance from the front of the unit is 36 inches The need to provide clearance for access to panels or doors may require clearance distances over and above the requirements COMBUSTION AIR REQUIREMENTS Gen...

Page 7: ...ppliance input The openings shall exchange directly or by ducts with the outdoor spaces crawl or attic that freely exchange with the outdoors Figure 3 Figure 3 Combustion Air Drawn from a Crawl Space...

Page 8: ...sq In 6 inches 140 000 35 sq In 7 inches 160 000 40 sq In 8 inches Furnace 12 Max Water Heater Vent or Chimney NOTES Each opening must be at least 100 sq in or 1 sq in per 1 000 Btuh of total input ra...

Page 9: ...nstalled horizontally in an attic basement crawl space or alcove Figure 6 It can also be suspended from a ceiling in a basement or utility room in either a right to left airflow or left to right airfl...

Page 10: ...built cased air conditioning coil However the plenum attached to the coil casing must be installed so that its surfaces are at least 1 from combustible construction Installation on a concrete slab 1 C...

Page 11: ...en the space in which the appliance s connected to the venting system are located and other spaces of the building 4 Close fireplace dampers 5 Turn on clothes dryers and any appliance not connected to...

Page 12: ...ventingsystemwillneed to be modified to comply with NFGC or local codes The venting system should be designed to have the minimum number of elbows or turns All horizontal runs shall slope upwards from...

Page 13: ...uding carbon monoxide poisoning that could result in personal injury or death All return ductwork must be secured to the furnace with sheet metal screws For installations in confined spaces all return...

Page 14: ...work may be connected to the left side right side or bottom The bottom panel Figure 15 page 24 must be installed for left or right return air NOTE Do not use the back of the furnace for return air Sid...

Page 15: ...o avoid unwanted noise and or damage to the furnace A typical gas service hookup is shown in Figure 11 Leak Check WARNING FIRE OR EXPLOSION HAZARD Never test for gas leaks with an open flame Check all...

Page 16: ...ecessaryforhigh altitude installation may only be accomplished with factory supplied orifices Do not attempt to drill out orifices in the field Improperly drilled orifices may cause fire explosion car...

Page 17: ...tor for the proper upgrade motor kit IMPORTANTNOTE Settheheatanticipatoraccording to the instructions supplied by the thermostat manufacturer To determine the heat anticipator setting 1 Add the curren...

Page 18: ...s on the terminal strip of the circuit board Verify the gas line service pressure does not exceed 10 0 inches of W C and is not less than 4 5 inches W C for natural gas For LP gas the line service pre...

Page 19: ...er to avoid false readings 2 Adjust all registers and duct dampers to the desired positionandrunthefurnacefor10to15minutesbefore taking any temperature readings The temperature rise is the difference...

Page 20: ...ir Limit Switch Note A properly functioning limit switch should turn off the gas valve when the return is blocked time depends on how well the return air is blocked The circulating air and combustion...

Page 21: ...that they were removed 12 Follow the lighting instructions found on the furnace door to return the furnace to operation Verify proper operation after servicing Cleaning Of Flue Passages If the flue p...

Page 22: ...of combustion products into the living space can create potentially hazardous conditions including carbon monoxide poisoning that could result in personal injury or death Check the vent pipe and or ch...

Page 23: ...Right Side 0 In Vent 1 In Back 0 In Top 1 In Front 4 In These are the listed clearances to combustible materials Allow 24 in minimum clearance for servicing Recommended clearance is 36 in The furnace...

Page 24: ...r N Dimensions shown in Inches Figure 15 SA 80 High Efficiency Upflow Horizontal Furnaces D 23 A 23 28 34 15 1 25 1 X 3 HOLE FOR GAS C 19 B 23 22 21 22 29 22 25 1 X 3 X 45 HOLE FOR GAS 4 KNOCKOUTS BOT...

Page 25: ...B FRONT BRACE 7 RIGHT SIDE LEFT SIDE BOTTOM VIEW FLANGES TOP VIEW 19 ACCEPTS 4 TYPE B VENT PIPE Figure 16 SK 80 High Efficiency Downflow Furnaces SK Model s Dimension A Dimension B Dimension C Dimensi...

Page 26: ...685 32 1 645 32 1 590 34 1 550 34 1 485 36 1 415 38 Med High 1 400 38 1 360 39 1 340 40 1 310 41 1 275 42 1 245 43 1 190 45 1 125 47 Med Low 1 235 43 1 215 44 1 180 45 1 155 46 1 130 47 1 100 48 1 060...

Page 27: ...65 1 175 68 SA108 35C Side Return 108 000 High 2 295 35 2 235 36 2 180 37 2 110 38 2 050 39 1 975 41 1 900 42 1 810 44 Med High 2 130 38 2 075 39 2 035 39 1 970 41 1 915 42 1 845 43 1 765 45 1 675 48...

Page 28: ...60 43 1 520 44 1 475 45 Med High 1 330 50 1 315 51 1 300 51 1 280 52 1 255 53 1 230 54 1 200 56 1 150 58 Med Low 1 180 56 1 165 57 1 150 58 1 135 59 1 115 60 1 090 61 1 060 63 1 010 66 Low 940 71 925...

Page 29: ...103 9 0 14 15 126 45D 126 000 24 115 60 1 127 103 15 2 12 30 NOTES can be C or N Time delay fuses or HACR type circuit breakers are required Thermostat Wire Gauge Recommended Thermostat Wire Length 2...

Page 30: ...K BLACK BLACK BLUE BLUE BLUE BLUE BLUE ORANGE BLUE GREEN BLUE BLACK BLACK WHITE BLACK WHITE WD 710731 C FIELD WIRING LEGEND LOW VOLTAGE HIGH VOLTAGE For 80 and 90 Single Stage Furnaces SINGLE STAGE TH...

Page 31: ...176 353 48 75 375 750 104 35 173 346 50 72 360 720 106 34 170 340 52 69 346 692 108 33 167 333 54 67 333 667 110 33 164 327 56 64 321 643 112 32 161 321 58 62 310 621 114 32 158 316 60 60 300 600 116...

Page 32: ...HIGH HIGH Table 9 Natural Gas Heating Values Table 8 High Altitude Deration Chart for Propane Gas PROPANE GAS ALTITUDE ABOVE SEA LEVEL INPUT BTU 45 000 54 000 72 000 90 000 108 000 126 000 0 to 1 999...

Page 33: ...LD PRESSURE 9 000 to 9 999 FT 51 49 49 49 49 49 ORIFICE SIZE 2 6 2 8 2 8 2 8 2 8 2 8 MANIFOLD PRESSURE Table 11 High Altitude Deration Chart for Natural Gas Low Heating Value NATURAL GAS LOW HEATING V...

Page 34: ...34...

Page 35: ...OW ML MH HIGH EAC L1 XFMR HUM 24V L1A 5 NEUTRALS 2 6 3 4 1 7 8 9 5 2 6 3 4 1 FAN 8 4 7 3 11 1 9 10 13 12 2 5 6 ITEM COMPONENT NAME 1 Blower Assembly 2 Blower Door Switch 3 Burner Assembly 4 Combustion...

Page 36: ...esh air supply for combustion and ventilation YES NO Installation Altitude ____________________ FT Deration Percentage ___________________ Furnace Input _______________________ Btuh Supply Air Tempera...

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