UNBRANDED G7SD High Efficiency Single Stage Condensing Upflow Horizontal Gas Furnace User Manual

UNBRANDED G7SD High Efficiency Single Stage Condensing Upflow Horizontal

Gas Furnace

TECHNICAL SPECIFICATIONS

G7SD
High Efficiency, Single Stage
Condensing, Upflow/Horizontal
Gas Furnace Models
95.0 AFUE
38,000 – 120,000 Btuh Input
The high efficiency upflow gas furnace may be installed free standing in a utility room, basement, or enclosed in an alcove or closet. Upflow/horizontal units come ready for upflow 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 Smartlite® 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 DuraVent: These furnaces have been tested with and are approved to be installed with DuraVent’s PolyPro venting system.

GAS FURNACE COMPONENTS

UPFLOW / HORIZONTAL FURNACE

SD Series -Upflow / Horizontal Furnace

DIMENSIONS

*SD Upflow / Horizontal Furnaces

Model #’s| Dim. -A-| Dim -B-| Dim -C-
038D-24B| ****

17 1/2

| ****

15 7/8

| ****

16 1/8

054D-24B
072D-35C| ****

21

| ****

19 3/8

| ****

19 5/8

090D-35C
108D-45D| 24 1/2| 22 7/8| 23 1/8

NOTE: Dimensions shown in inches.

SD Series -Upflow / Horizontal Furnace

BLOWER PERFORMANCE

G7SD

*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|
 | HIGH *****| 1519| 21| 1483| 22| 1433| 22| 1397| 23| 1335| 24| 1272| 25| 1214| 26| 1130| 27|
SD038D-24B

Bottom Return (38,000)

| MED-H **

MED-L

| 1238

1094

| 28| 1216

1082

| 28| 1188

1052

| 28| 1164

1034

| 29| 1136

1021

| 30

34

| 1092

977

| 31

34

| 1043

928

| 32

36

| 973

865

| 34

37

|
31| 32| 32| 33
 | LOW| 841| 40| 817| 42| 801| 43| 786| 45| 750| 46| 720| 48| 683| 49| 639| 53|
 | HIGH *****| 1664| 18| 1631| 21| 1596| 21| 1546| 22| 1489| 23| 1433| 24| 1366| 25| 1285| 26|
SD038D-24B

Side Return (38,000)

| MED-H

MED-L **

| 1272

1130

| 26

29

| 1255

1114

| 27| 1249

1100

| 27| 1217

1079

| 28| 1189

1048

| 29| 1145

1025

| 30

33

| 1096

987

| 31

35

| 1036

944

| 33

36

|
31| 31| 31| 33
 | LOW| 869| 39| 839| 42| 809| 42| 790| 44| 764| 45| 739| 47| 711| 48| 664| 52|
 | HIGH *| 1519| 33| 1483| 34| 1433| 35| 1397| 36| 1335| 37| 1272| 39| 1214| 41| 1130| 44|
SD054D-24B| MED-H| 1238| 40| 1216| 41| 1188| 42| 1164| 43| 1136| 44| 1092| 46| 1043| 48| 973| 51|
Bottom Return (54,000)| MED-L **| 1094| 46| 1082| 46| 1052| 48| 1034| 48| 1021| 49| 977| 51| 928| 54| 865| 58|
 | LOW| 841| 59| 817| 61| 801| 62| 786| 64| 750| 67| 720| 69| 683| 73| 639| 78|
 | HIGH *| 1664| 30| 1631| 31| 1596| 31| 1546| 32| 1489| 34| 1433| 35| 1366| 37| 1285| 39|
SD054D-24B

Side Return (54,000)

| MED-H

MED-L **

| 1272

1130

| 39

44

| 1255

1114

| 40

45

| 1249

1100

| 40

45

| 1217

1079

| 41

46

| 1189

1048

| 42

48

| 1145

1025

| 44

49

| 1096

987

| 46

51

| 1036

944

| 48

53

|
 | LOW| 869| 58| 839| 60| 809| 62| 790| 63| 764| 65| 739| 68| 711| 70| 664| 75|
 | HIGH *****| 1933| 34| 1857| 36| 1780| 37| 1695| 39| 1599| 42| 1498| 45| 1396| 48| 1280| 52|
SD072D-35C

Bottom Return (54,000)

| MED-H **

MED-L

| 1872

1320

| 36

51

| 1804

1299

| 37

51

| 1731

1264

| 39

53

| 1639

1233

| 41

54

| 1551

1183

| 43

56

| 1458

1126

| 46

59

| 1353

1059

| 49

63

| 1237

963

| 54|
69|
 | LOW| 1185| 56| 1170| 57| 1132| 59| 1102| 60| 1067| 62| 1015| 66| 947| 70| 856| 78|
 | HIGH *****| 1916| 35| 1848| 36| 1773| 38| 1692| 39| 1613| 41| 1515| 44| 1426| 47| 1316| 51|
SD072D-35C

Side Return (54,000)

| MED-H **

MED-L

| 1815

1259

| 37

53

| 1771

1241

| 38

54

| 1711

1224

| 39

54

| 1641

1192

| 41

56

| 1553

1163

| 43

57

| 1468

1115

| 45

60

| 1373

1056

| 49

63

| 1270

982

| 52|
68|
 | LOW| 1139| 59| 1120| 60| 1096| 61| 1075| 62| 1047| 64| 1014| 66| 959| 70| 884| 75|

SCD72D-35C

Side + Bottom or 2 Sides

(72,000)

| HIGH * MED-H ** MED-L| 1954

1869

1287

| 34| 1890

1805

1262

| 35

37

53

| 1824

1741

1231

| 37

38

54

| 1741

1685

1197

| 38

40

56

| 1656

1607

1166

| 40

41

57

| 1564

1516

1117

| 43

44

60

| 1470

1419

1061

| 45

47

63

| 1352

1308

966

| 49

51

|
36

52

69|
66| 70
 | LOW| 1147| 58| 1115| 60| 1097| 61| 1075| 62| 1047| 64| 1014| 959| 884| 75|
 | HIGH *****| 2288| 36| 2236| 37| 2161| 39| 2092| 40| 2017| 41| 1934| 43| 1841| 45| 1748| 48|
SD090D-35C

Bottom Return (90,000)

| MED-H **

MED-L

| 2144

1874

| 39

44

| 2093

1845

| 40

45

| 2049

1806

| 41

46

| 1985

1766

| 42

47

| 1912

1717

| 44

49

| 1842

1661

| 45

50

| 1764

1582

| 47

53

| 1668

1503

| 50

55

|
 | LOW| 1541| 54| 1516| 55| 1509| 55| 1486| 56| 1456| 57| 1402| 59| 1361| 61| 1294| 64|
 | HIGH *****| 2273| 37| 2222| 38| 2164| 39| 2098| 40| 2025| 41| 1947| 43| 1864| 45| 1780| 47|
SD090D-35C

Side Return (90,000)

| MED-H **

MED-L

| 2084

1784

| 40

47

| 2039

1777

| 41

47

| 2007

1749

| 42

48

| 1955

1725

| 43

48

| 1895

1679

| 44

50

| 1832

1629

| 45

51

| 1750

1576

| 48

53

| 1665

1501

| 50

56

|
 | LOW| 1482| 56| 1470| 57| 1444| 58| 1432| 58| 1405| 59| 1375| 61| 1339| 62| 1286| 65|

SCD90D-35C

Side + Bottom or 2 Sides

(90,000)

| HIGH * MED-H ** MED-L| 2328

2124

1825

| 36

39

46

| 2273

2108

1809

| 37

40

46

| 2224

2052

1781

| 37

41

47

| 2151

2018

1752

| 39

41

48

| 2082

1954

1706

| 40

43

49

| 2005

1884

1676

| 42

44

50

| 1920

1813

1615

| 43

46

52

| 1825

1725

1535

| 46

48

54

|
 | LOW| 1509| 55| 1488| 56| 1468| 57| 1440| 58| 1422| 59| 1379| 60| 1351| 62| 1292| 64|
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
 | HIGH *****| 2276| 44| 2228| 45| 2173| 46| 2108| 47| 2035| 49| 1961| 51| 1876| 53| 1778| 56
SD108D-45D

Bottom Return (108,000)

| MED-H **

MED-L

| 2113

1819

| 47

55

| 2078

1789

| 48

56

| 2019

1757

| 50

57

| 1970

1706

| 51

59

| 1904

1666

| 53

60

| 1840

1610

| 54

62

| 1768

1551

| 57

64

| 1677

1486

| 60

67

 | LOW| 1496| 67| 1484| 67| 1459| 69| 1430| 70| 1402| 71| 1363| 73| 1330| 75| 1262| 79
 | HIGH *****| 2306| 43| 2247| 45| 2192| 46| 2121| 47| 2044| 49| 1979| 51| 1892| 53| 1787| 56
SD108D-45D

Side Return (108,000)

| MED-H ** MED-L| 2135

1845

| 47

54

| 2103

1834

| 50

57

| 2050

1805

| 51

58

| 1995

1776

| 53

59

| 1935

1719

| 54

61

| 1858

1663

| 57

63

| 1778

1605

| 59

66

| 1690

1533

| 62

69

 | LOW| 1543| 65| 1521| 69| 1502| 70| 1477| 71| 1452| 73| 1412| 75| 1368| 77| 1314| 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 – Btuh (a)| 38,000| 54,000| 72,000| 85,000| 108,000
Heating Capacity – Btuh| 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 Upflow/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)

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