Gibson KG7S 95.0 AFUE High Efficiency Furnace Gas Furnace Owner’s Manual

: June 15, 2024
: Gibson

Table of Contents

Gibson KG7S 95.0 AFUE High Efficiency Furnace Gas Furnace
TECHNICAL SPECIFICATIONS
FEATURES and BENEFITS
GAS FURNACE COMPONENTS
DIMENSIONS
BLOWER PERFORMANCE – G7SD Continued
VENTING
MODEL IDENTIFICATION CODE
SPECIFICATIONS
ACCESSORIES
GENERAL TERMS OF LIMITED WARRANTY
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Gibson KG7S 95.0 AFUE High Efficiency Furnace Gas Furnace

Technical Specifications

Model: G7SD

Type: High Efficiency, Single Stage Condensing, Up flow/Horizontal Gas Furnace
AFUE: 95.0%
Input: 38,000 – 120,000 But

Product Features and Benefits

Flame Sensor
Finish Flange
Roll-Out Switch
Burner Assembly
Main Air Limit Switch
Inducer Limit Switch
Pressure Switch (Inducer)
Inducer Assembly
Blower Door Switch
Igniter
Gas Valve
Furnace Control Board
Pressure Switch (Condensate)
Transformer
Motor Choke
Motor Control Board
Blower Assembly

TECHNICAL SPECIFICATIONS

G7SD
High Efficiency, Single Stage
Condensing, Up flow/Horizontal
Gas Furnace Models
95.0 AFUE 38,000 – 120,000 But Input

The high efficiency up flow gas furnace may be installed free standing in a utility room, basement, or enclosed in an alcove or closet. Up flow/horizontal units come ready for up flow or horizontal application. The extended flush jacket provides a pleasing “appliance appearance.” Design certified by CSA for application in Canada and the United States.
For California installations in SCAQMD only: This furnace does not meet the SCAQMD Rule 1111 NOx emission limit (14 ng/J), and thus is subject to a mitigation fee of up to $450. This furnace is not eligible for the Clean Air Furnace Rebate Program: www.CleanAirFurnaceRebate.com.

FEATURES and BENEFITS

100% fired and tested: All units and each component are tested on the manufacturing line.
Best packaging in the industry: Unique corner post design assures product will arrive to the homeowner dent free.
30 second blower delay at start-up assures a warm duct temperature at furnace start-up. Adjustable blower off settings (60, 90, 120 and 180 seconds).
30 second post purge increases life of heat exchanger.
Hot surface igniter: Innovative application of a silicon nitride type igniter. Utilizes proven Smaltite® technology.
Color coded wire harness: Designed to fit the components, all with quick-connect fittings for ease of service and replacement.
Flexible category IV venting system: May be vertically or horizontally vented using either a one-pipe or two-pipe system for maximum flexibility in installation.
High Static Blowers: All models equipped with high static blowers.
Low Boy Height: Easy to apply in low ceiling applications, works well with taller high SEER coils, easier to handle and install.
Tubular primary heat exchanger: Heavy gauge aluminized steel heat exchanger and stainless steel secondary heat exchanger assures a long life.
60 second fixed cooling cycle blower-off delay (TDR) increases cooling performance when matched with a Nortek Global HVAC coil.
High efficiency blower kits maximize efficiencies. On select units, a SEER improvement of up to 1 point is realized.
Multi-speed direct drive blower: Designed to give a wide range of cooling capacities. Switches on PCB, provide ultra easy motor speed selection.
LP convertible: Simple burner orifice and regulator spring change for ease of convertibility.
Diagnostic lights for easy troubleshooting without counting flashes: Dedicated light for flame signal strength and 2 lights in combination to indicate all other fault codes with easy to recognize states without counting flashes.
Incorporates integrated control board with connections for electronic air cleaner and humidifier.
Two piece door design enhances furnace appearance and uses captured screws to prevent losing door screws.
Blower Compartment: Sealed door to reduce air leakage and insulated for ultra quiet operation.
Sealed Vestibule reduces burner and inducer sound levels.
Furnace Air Leakage: These furnaces comply with Energy Star cabinet air leakage requirement of less than or equal to 2%. Keep the conditioned air flowing to where it’s needed.
Polypro by Duramen: These furnaces have been tested with and are approved to be installed with Draven’s Polypro venting system.

GAS FURNACE COMPONENTS

UPFLOW / HORIZONTAL FURNACE

*SD Series -Upflowed / Horizontal Furnace

DIMENSIONS

*SD – UPFLOW / HORIZONTAL FURNACES|
---|---
Model Number &

Heating Input (B.Th.)

| **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**|
SD038D-24B

Bottom Return (38,000)

| HIGH * MED-H ** MED-L

LOW

| 1519

1238

1094

841

| 21

28

| 1483

1216

1082

817

| 22

28

| 1433

1188

1052

801

| 22

28

| 1397

1164

1034

786

| 23

29

| 1335

1136

1021

750

| 24| 1272

1092

977

720

| 25| 1214

1043

928

683

| 26| 1130

973

865

639

| 27|
30

34

46

| 31

34

48

| 32

36

49

| 34

37

53

|
31

40

| 32

42

| 32

43

| 33

45

|
SD038D-24B

Side Return (38,000)

| HIGH * MED-H MED-L **

LOW

| 1664

1272

1130

869

| 18

26

29

| 1631

1255

1114

839

| 21

27

| 1596

1249

1100

809

| 21

27

| 1546

1217

1079

790

| 22

28

| 1489

1189

1048

764

| 23

29

| 1433

1145

1025

739

| 24| 1366

1096

987

711

| 25| 1285

1036

944

664

| 26|
30

33

47

| 31

35

48

| 33

36

52

|
31

42

| 31

42

| 31

44

| 33

45

|
39|
SD054D-24B

Bottom Return (54,000)

| HIGH * MED-H MED-L **

LOW

| 1519

1238

1094

841

| 33

40

46

59

| 1483

1216

1082

817

| 34

41

46

| 1433

1188

1052

801

| 35

42

48

| 1397

1164

1034

786

| 36

43

48

| 1335

1136

1021

750

| 37

44

49

| 1272

1092

977

720

| 39

46

51

| 1214

1043

928

683

| 41

48

54

| 1130

973

865

639

| 44

51

58

|
61| 62| 64| 67| 69| 73| 78|
SD054D-24B

Side Return (54,000)

| HIGH * MED-H MED-L **

LOW

| 1664

1272

1130

869

| 30

39

44

58

| 1631

1255

1114

839

| 31

40

45

60

| 1596

1249

1100

809

| 31

40

45

| 1546

1217

1079

790

| 32

41

46

| 1489

1189

1048

764

| 34

42

48

| 1433

1145

1025

739

| 35

44

49

| 1366

1096

987

711

| 37

46

51

| 1285

1036

944

664

| 39

48

53

|
62| 63| 65| 68| 70| 75|
SD072D-35C

Bottom Return (54,000)

| HIGH * MED-H ** MED-L

LOW

| 1933

1872

1320

1185

| 34| 1857

1804

1299

1170

| 36

37

51

57

| 1780

1731

1264

1132

| 37

39

53

59

| 1695

1639

1233

1102

| 39

41

54

60

| 1599

1551

1183

1067

| 42

43

56

62

| 1498

1458

1126

1015

| 45

46

59

| 1396

1353

1059

947

| 48

49

63

| 1280

1237

963

856

| 52

54

|
36

51

56

|
69

78

|
66| 70|
SD072D-35C

Side Return (54,000)

| HIGH * MED-H ** MED-L

LOW

| 1916

1815

1259

1139

| 35

37

53

59

| 1848

1771

1241

1120

| 36

38

54

60

| 1773

1711

1224

1096

| 38

39

54

61

| 1692

1641

1192

1075

| 39

41

56

62

| 1613

1553

1163

1047

| 41

43

57

64

| 1515

1468

1115

1014

| 44

45

60

| 1426

1373

1056

959

| 47

49

63

| 1316

1270

982

884

| 51

52

|
68

75

|
66| 70|
SCD72D-35C

Side + Bottom or 2 Sides

(72,000)

| HIGH * MED-H ** MED-L

LOW

| 1954

1869

1287

1147

| 34| 1890

1805

1262

1115

| 35

37

53

60

| 1824

1741

1231

1097

| 37

38

54

61

| 1741

1685

1197

1075

| 38

40

56

62

| 1656

1607

1166

1047

| 40

41

57

64

| 1564

1516

1117

1014

| 43

44

60

| 1470

1419

1061

959

| 45

47

63

| 1352

1308

966

884

| 49

51

|
36

52

58

|
69

75

|
66| 70|
SD090D-35C

Bottom Return (90,000)

| HIGH * MED-H ** MED-L

LOW

| 2288

2144

1874

1541

| 36

39

44

54

| 2236

2093

1845

1516

| 37

40

45

55

| 2161

2049

1806

1509

| 39

41

46

55

| 2092

1985

1766

1486

| 40

42

47

56

| 2017

1912

1717

1456

| 41

44

49

57

| 1934

1842

1661

1402

| 43

45

50

59

| 1841

1764

1582

1361

| 45

47

53

61

| 1748

1668

1503

1294

| 48

50

55

64

|
SD090D-35C

Side Return (90,000)

| HIGH * MED-H ** MED-L

LOW

| 2273

2084

1784

1482

| 37

40

47

56

| 2222

2039

1777

1470

| 38

41

47

57

| 2164

2007

1749

1444

| 39

42

48

58

| 2098

1955

1725

1432

| 40

43

48

58

| 2025

1895

1679

1405

| 41

44

50

59

| 1947

1832

1629

1375

| 43

45

51

61

| 1864

1750

1576

1339

| 45

48

53

62

| 1780

1665

1501

1286

| 47

50

56

65

|

SCD90D-35C

Side + Bottom or 2 Sides

(90,000)

| HIGH * MED-H ** MED-L

LOW

| 2328

2124

1825

1509

| 36

39

46

55

| 2273

2108

1809

1488

| 37

40

46

56

| 2224

2052

1781

1468

| 37

41

47

57

| 2151

2018

1752

1440

| 39

41

48

58

| 2082

1954

1706

1422

| 40

43

49

59

| 2005

1884

1676

1379

| 42

44

50

60

| 1920

1813

1615

1351

| 43

46

52

62

| 1825

1725

1535

1292

| 46

48

54

64

|

BLOWER PERFORMANCE – G7SD Continued

*SD – UPFLOW / HORIZONTAL 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

SD108D-45D

Bottom Return (108,000)

| HIGH * MED-H ** MED-L

LOW

| 2276

2113

1819

1496

| 44

47

55

67

| 2228

2078

1789

1484

| 45

48

56

67

| 2173

2019

1757

1459

| 46

50

57

69

| 2108

1970

1706

1430

| 47

51

59

70

| 2035

1904

1666

1402

| 49

53

60

| 1961

1840

1610

1363

| 51

54

62

| 1876

1768

1551

1330

| 53

57

64

| 1778

1677

1486

1262

| 56

60

67

71| 73| 75| 79

SD108D-45D

Side Return (108,000)

| HIGH * MED-H ** MED-L

LOW

| 2306

2135

1845

1543

| 43

47

54

65

| 2247

2103

1834

1521

| 45

50

57

69

| 2192

2050

1805

1502

| 46

51

58

70

| 2121

1995

1776

1477

| 47

53

59

| 2044

1935

1719

1452

| 49

54

61

| 1979

1858

1663

1412

| 51

57

63

| 1892

1778

1605

1368

| 53

59

66

| 1787

1690

1533

1314

| 56

62

69

71| 73| 75| 77| 80

VENTING

All models are approved for vertical non direct (1 pipe) and direct (2 pipe) venting applications. See Vent Table below for specified sizes and allowable lengths.

VENT TABLE

| SINGLE PIPE LENGTH (FT.)

with 1 long radius elbow*

| DIRECT VENT,

DUEL PIPE LENGTH (ft.) WITH

1 long radius elbow on each pipe*

---|---|---
OUTLET| OUTLET| INLET/OUTLET| INLET/OUTLET
MODELS| 2”| 3”| 2”| 3”
SD038| 50| 70| 50| 70
SD054| 70| 90| 70| 90
SD072| 50| 90| 50| 90
SD090| 60| 90| 60| 90
SD108| N/A| 90| N/A| 90

NOTE
1. Subtract 2.5 ft. for each additional 2″ elbow and 3.5 ft. for each additional 3″ elbow.
2. Two 45 degree elbows are equivalent to one 90 degree elbow.
3. One short radius elbow is equivalent to two long radius elbows.
4. Do not include termination elbows in calculation of vent length.
5. This table is applicable for elevations from sea level to 2000 ft. For higher elevations decrease vent pipe lengths by 8% per 1000 ft. of altitude.
6. Only the listed pipe materials are approved for use with FG7 Condensing Furnaces.

MODEL IDENTIFICATION CODE

SPECIFICATIONS

G7SD MODEL NUMBERS:| -038D-T24B1| -054D-T24B1| -072D- T35C1| -090D-T35C1| -108D-T45D1
---|---|---|---|---|---
Input – But (a)| 38,000| 54,000| 72,000| 85,000| 108,000
Heating Capacity – But| 36,000| 51,000| 68,000| 81,000| 103,000
AFUE (b)| 95.0 / 94.0| 95.0 / 90.0| 95.0 / 90.0| 95.0 / 94.0| 95.0 / 90.0
Blower D x W| 10 x 8| 11 x 8| 10 x 10| 11 x 10| 11 x 10
Motor H.P. – Speed – Type| 3/4 – 5 – ECM| 3/4 – 5 – ECM| 3/4 – 5 – ECM| 1 – 5 – ECM| 1 – 5 – ECM
Motor FLA| 8.8| 8.8| 8.8| 11.5| 11.5
Rated Ext. SP – In. W.C.| 0.5| 0.5| 0.5| 0.5| 0.5
Temperature Rise Range – ºF| 25-55| 30-60| 35-65| 35-65| 35-65
Shipping Weights| 100lbs| 120lbs| 130lbs| 135lbs| 155lbs

Note

All models are 115V, 60 Hz. Gas Connections are 1/2″ N.P.T. AFUE = Annual Fuel Utilization Efficiency
Ratings to 2,000 ft. Over 2,000 ft. reduce 4% for each 1,000 ft. above sea level.
AFUE for Up flow/Horizontal application.

ACCESSORIES

G7SD KITS

Description| SKU
2″ Concentric vent kit, Canadian and US approved| 904952
3″ Concentric vent kit, Canadian and US approved| 904953
2″ Side wall vent kit| 904617
3″ Side wall vent kit| 904347
U.S. LP Conversion kit (0 to 10,000 ft.)| 905028
Canada LP Conversion kit (0 to 4,500 ft.)| 905029
Bottom return filter 20 per box, “B” cabinet| 904916
Bottom return filter 20 per box, “C” cabinet| 904917
Bottom return filter 20 per box, “D” cabinet| 904918
Side return filter kit| 541036
Neutralizer kit| 902377
“A” Cabinet variable speed, high efficiency, VSHE| 904876
“B” Cabinet variable speed, high efficiency, VSHE| 904877
“C” Cabinet variable speed, high efficiency, VSHE| 904878
“D” Cabinet variable speed, high efficiency, VSHE| 904879
Furnace Twinning Kit| 1010035

GENERAL TERMS OF LIMITED WARRANTY

Nortek Global HVAC, LLC will furnish a replacement for any part of this product which fails in normal use and service within the terms and conditions of the warranty.
For complete details of the Limited Warranty, including applicable terms and conditions, see your local installer or contact the Nortek Global HVAC, LLC warranty department for a copy.
Before purchasing this appliance, read important energy cost and efficiency information available from your retailer. Specifications and illustrations subject to change without notice and without incurring obligations. Printed in U.S.A (10/2021)
593F-1021 (Replaces 593F-0420)
www.gibsonhvac.com