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23

Table 5. Continued

G7XA UPFLOW / HORIZONTAL GAS FURNACES

Model 

Number

Heating 

Input 

(Btuh)

Motor Switch 

Setting

External Static Pressure (in.w.c.)

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

1/5 2/6 3/7 4/8 CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise

XA092-C

92,000

0

0

0

0

1125

61

1040

    

1

0

0

0

1205

57

1120

61

1040

66

0

1

0

0

1305

52

1225

56

1150

59

1070

64

  

1

1

0

0

1430

48

1350

50

1270

54

1190

57

1110

61

1030

66

  

0

0

1

0

1525

45

1450

47

1375

50

1300

52

1225

56

1150

59

1075

63

1000

68

1

0

1

0

1620

42

1540

44

1465

47

1390

49

1315

52

1240

55

1165

58

1090

63

0

1

1

0

1695

40

1620

42

1545

44

1465

47

1390

49

1315

52

1235

55

1160

59

1

1

1

0

1770

39

1700

40

1630

42

1555

44

1485

46

1410

48

1340

51

1265

54

0

0

0

1

1875

36

1805

38

1730

39

1655

41

1580

43

1510

45

1435

47

1340

51

1

0

0

1

1905

36

1840

37

1775

38

1710

40

1640

42

1575

43

1510

45

1445

47

0

1

0

1

1980

34

1910

36

1845

37

1780

38

1715

40

1650

41

1580

43

1515

45

1

1

0

1

2025

34

1960

35

1895

36

1830

37

1765

39

1700

40

1635

42

1570

43

0

0

1

1

2085

33

2025

34

1960

35

1900

36

1840

37

1775

38

1715

40

1655

41

1

0

1

1

2135

32

2070

33

2010

34

1945

35

1880

36

1815

38

1750

39

1685

40

0

1

1

1

2200

31

2145

32

2090

33

2035

33

1980

34

1925

35

1870

36

1820

37

1

1

1

1

2280

30

2225

31

2170

31

2115

32

2065

33

2010

34

1955

35

1900

36

XA107-D

107,000

0

0

0

0

1395

57

1350

59

1305

61

1260

63

1210

66

1165

68

1

0

0

0

1465

54

1420

56

1375

58

1330

60

1290

61

1245

64

1200

66

  

0

1

0

0

1555

51

1510

52

1470

54

1425

56

1380

57

1340

59

1295

61

1250

63

1

1

0

0

1625

49

1585

50

1540

51

1500

53

1460

54

1415

56

1375

58

1335

59

0

0

1

0

1690

47

1650

48

1610

49

1570

50

1530

52

1485

53

1445

55

1405

56

1

0

1

0

1760

45

1715

46

1670

47

1625

49

1575

50

1530

52

1485

53

1440

55

0

1

1

0

1835

43

1790

44

1745

45

1695

47

1650

48

1605

49

1555

51

1510

52

1

1

1

0

1885

42

1840

43

1790

44

1745

45

1700

47

1655

48

1610

49

1565

51

0

0

0

1

1945

41

1900

42

1850

43

1805

44

1760

45

1710

46

1665

48

1620

49

1

0

0

1

1950

41

1905

42

1860

43

1820

44

1775

45

1735

46

1690

47

1650

48

0

1

0

1

2075

38

2030

39

1990

40

1945

41

1900

42

1855

43

1810

44

1770

45

1

1

0

1

2125

37

2085

38

2040

39

2000

40

1955

41

1910

41

1870

42

1825

43

0

0

1

1

2170

37

2130

37

2090

38

2045

39

2005

40

1965

40

1925

41

1880

42

1

0

1

1

2215

36

2180

36

2140

37

2105

38

2070

38

2035

39

2000

40

1965

40

0

1

1

1

2225

36

2165

37

2100

38

2040

39

1

1

1

1

2170

37

2120

37

2065

38

Notes:

1. Motor Switch Settings are for heating speeds using HEAT switches 1, 2, 3, & 4 and cooling speeds using COOL 

switches 5, 6, 7, & 8.

2. Two openings are recommended for airfl ows above 1,600 CFM if the fi lter(s) is (are) adjacent to the furnace.

3. Data is shown without fi lter.

4. Temperature rises in the table are approximate. Actual temperature rises may vary.

5. Temperature rises that are shaded in grey are for reference only. These conditions are not recommended.

Summary of Contents for G7XA Series

Page 1: ...uture reference GAS FURNACE Installation Instructions Upflow Horizontal Model 80 AFUE DO NOT DESTROY THIS MANUAL KEEP IN A SAFE PLACE FOR FUTURE REFERENCE FIRE OR EXPLOSION HAZARD Failure to follow sa...

Page 2: ...2...

Page 3: ...lication 12 Conversion to LP Propane 13 ELECTRICAL WIRING 13 Low Voltage Wiring 13 Line Voltage Wiring 13 Twinning 14 Grounding 15 START UP ADJUSTMENTS 15 Pre Start Checklist 15 Start Up Procedures 15...

Page 4: ...uld not be ignored WARNING indicates a potentially hazardous situation that if not avoided could result in personal injury or death CAUTION indicates a potentially hazardoussituationthatifnotavoided m...

Page 5: ...e lighting instructions Place the appliance being inspected into operation Adjust the thermostat so appliance is operating continuously 7 Test for spillage from draft hood equipped appliances at the d...

Page 6: ...trevisionoftheIFGC Consult local codes for special requirements CAUTION Exhaust fans clothes dryers fireplaces and other appliances that force air from the house to the outdoors can create a negative...

Page 7: ...ches Figure 3 Combustion Air Drawn from Outside Through Vertical Ducts Inlet Air Duct must be at least 1 sq in per 4 000 Btuh of total input rating Inlet and Outlet Ducts must extend above attic insul...

Page 8: ...s or turns All horizontal runs shall slope upwards from the furnace at inch per running foot of vent Supports for the vent pipe must be installed a minimum of every five feet along the vent run to ens...

Page 9: ...he furnace blower to provide airflow over the indoor coil the coil must be installed downstream on the outlet side of the furnace or in parallel with the furnace If a cooling system is installed in pa...

Page 10: ...he duct system See Bottom Panel Removal section Ifthefurnacewillbesuspendedfromtheceiling assemble a support frame Figure 7 using slotted iron channel and full threaded rod Fasten the frame together w...

Page 11: ...must be resistant to the actions of LP propane gas The main gas valve and main power disconnect to the furnace must be properly labeled by the installer in case emergency shutdown is required A drip...

Page 12: ...at sea level WARNING Thereductionofinputratingnecessaryforhigh altitude installation may only be accomplished with factory supplied orifices Do not attempt to drill out orifices in the field Improper...

Page 13: ...replacing any of the original wires supplied with the furnace the replacement wire must be copper wiring and have a temperature rating of at least 105 F 40 C Low Voltage Wiring The thermostat must be...

Page 14: ...45 ft 20 140 ft 70 ft 18 225 ft 110 ft Table 2 Wire Length and Voltage Specifications FURNACE W G Y C R THERMOSTAT W G Y C R W G Y R A C MOTOR TWIN TERMINAL BOARD UNIT BOARD FURNACE BOARD MOTOR TWIN T...

Page 15: ...t input rate perform these steps Grounding WARNING Tominimizepersonalinjury thefurnacecabinet musthaveanuninterruptedorunbrokenelectrical ground The controls used in this furnace require an earth grou...

Page 16: ...TWIN DHUM W1 THERMOSTAT EXPANSION PORT COOL HEAT FAN SPEED 1 2 3 4 5 6 7 8 OFF ON CONNECTION TERMINAL TO TWIN FURNACES Figure 15 Motor Control Board Verifying Burner Operation CAUTION The door over t...

Page 17: ...a call for cooling occurs during continuous fan the blower will switch over to the selected COOL speed IftheWterminalreceivesacallforheatduringcontinuous fan the blower will de energize A call for fa...

Page 18: ...iping at the furnace 8 Remove the piping between the gas valve and the ground joint union If applicable 9 Remove all screws securing the burner assembly to the furnace 10 Carefully remove the burner a...

Page 19: ...provided online Blower Limit Switch Blower switches prevent operation when blower is not operational Flame Sensor The flame sensor verifies when a flame has carried over from the igniter to the opposi...

Page 20: ...ace operates when the Blower Limit Switch is reset contact a qualified service technician to identify and repair the problem If the furnace still doesn t operate check the Flame Roll out Switches Figu...

Page 21: ...PANEL FRONT BRACE LEFT SIDE RIGHT SIDE BOTTOM VIEW FLANGES TOP VIEW ACCEPTS 4 TYPE B VENT PIPE 23 1 HOLE FOR THERMOSTAT HOLE FOR ELECTRIC HOLE FOR ELECTRIC Figure 16 Furnace Dimensions XA Model s Dim...

Page 22: ...54 795 56 765 58 730 61 1 1 1 0 1000 44 970 46 940 47 910 49 880 51 850 52 820 54 790 56 0 0 0 1 1075 41 1045 43 1015 44 985 45 960 46 925 48 900 49 870 51 1 0 0 1 1110 40 1080 41 1055 42 1025 43 1000...

Page 23: ...0 0 0 1395 57 1350 59 1305 61 1260 63 1210 66 1165 68 1 0 0 0 1465 54 1420 56 1375 58 1330 60 1290 61 1245 64 1200 66 0 1 0 0 1555 51 1510 52 1470 54 1425 56 1380 57 1340 59 1295 61 1250 63 1 1 0 0 1...

Page 24: ...AN SPEED HEAT HIGH COOL FAN HEAT MH ML LOW GREEN BLACK WHITE YELLOW YELLOW BLACK RED BLACK BLACK BLACK GREEN BLACK BLACK WHITE BLACK WHITE RED GREY WHITE BLACK WHITE NEUTRAL BLACK 208 240V GROUND For...

Page 25: ...3 346 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 31 155 310 62 58 290 581 118 31...

Page 26: ...9 0 9 0 MANIFOLD PRESSURE 8 000 to 10 000 FT 51 51 51 51 ORIFICE SIZE 8 5 8 5 8 5 8 5 MANIFOLD PRESSURE Table 9 High Altitude Deration Propane Gas PROPANE ALTITUDE ABOVE SEA LEVEL INPUT BTU 46 000 61...

Page 27: ...lve 9 Igniter 10 Inducer Assembly 11 Main Air Limit Switch 12 Motor Control Board 13 Pressure Switch 14 Transformer LOCATION OF FURNACE COMPONENTS Figure 18 Upflow Horizontal Gas Furnace R C Y G W STA...

Page 28: ...esh air supply for combustion and ventilation YES NO Installation Altitude ____________________ FT Deration Percentage ___________________ Furnace Input _______________________ Btuh Supply Air Tempera...

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