UNBRANDED FG7S High Efficiency Single Stage Condensing Upflow Horizontal and Downflow Gas Furnace Models User Manual
- June 15, 2024
- UNBRANDED
Table of Contents
UNBRANDED FG7S High Efficiency Single Stage Condensing Upflow Horizontal and Downflow Gas Furnace Models
Introduction
High Efficiency, Single Stage Condensing, Up flow/Horizontal and Downflow Gas Furnace Models
95.0 AFUE
38,000 – 120,000 Btuh 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.
This furnace series is approved and certified by the SCAQM and the SJVAPC
Districts in the state of California under each Districts’ Mitigation Fee Plan
for shipment into and sales in both districts.
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 Dura Vent: These furnaces have been tested with and are approved to be installed with Dura Vent’s PolyPro venting system.
GAS FURNACE COMPONENTS
*UPFLOW / HORIZONTAL FURNACE (SD SERIES)**
-
*SD Series -Up flow / Horizontal Furnace
-
*SM Series Downflow 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
*SM Downflow Furnaces
Model # ‘ s| Dim . -A-| Dim . -B-|
Dim . -C-
054D248| 17 ½| 15 7/8| 16 1/8
072D35C| 21| 19 3/8| 19 5/8
NOTE : Dimensions shown in inches.
*SM Series Downflow 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|
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
|
*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
BLOWER PERFORMANCE – G7SM
*SM – DOWNFLOW 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|
SM054D-24B
Top Return (54,000)
| HIGH * MED-H MED-L **
LOW
| 1590
1228
1096
855
| 31
41
46
58
| 1563
1207
1079
825
| 32
41
46
| 1538
1193
1061
800
| 33
42
47
| 1513
1169
1038
777
| 33
43
48
| 1477
1157
1010
753
| 34
43
50
| 1430
1127
986
723
| 35
44
51
| 1370
1084
957
696
| 36
46
52
| 1312
1037
919
665
| 38
48
54
|
61| 63| 64| 66| 69| 72| 75|
SM072D-35C
Top Return (72,000)
| HIGH * MED-H ** MED-L
LOW
| 2235
2095
1871
1568
| 30
32
| 2176
2052
1838
1552
| 31
32
| 2121
2005
1797
1527
| 31
33
| 2067
1957
1761
1485
| 32
34
| 2010
1906
1716
1457
| 33| 1936
1852
1667
1418
| 34| 1864
1781
1602
1370
| 36
37
42
49
| 1783
1709
1536
1343
| 37
39
43
50
|
35
39
46
| 36
40
47
|
36
43
| 36
43
| 37
44
| 38
45
|
NOTES:
-
Factory Set Cooling Speed
** Factory Set Heating Speed- Two openings are recommended for airflows above 1,600 CFM if filter(s) is(are) adjacent to furnace
- Temperature rises in the table are approximate. Actual temperature rises may vary.
- Temperature rises shaded in gray are for reference only. These conditions are not recommended
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:
- Subtract 2.5 ft. for each additional 2″ elbow and 3.5 ft. for each additional 3″ elbow.
- Two 45 degree elbows are equivalent to one 90 degree elbow.
- One short radius elbow is equivalent to two long radius elbows.
- Do not include termination elbows in calculation of vent length.
- 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.
- 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| 95| 95| 95| 95| 95
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
G7SM MODEL NUMBERS:| -054D-T24B1| -072D-T35C1
---|---|---
Input – Btuh (a)| 54,000| 72,000
Heating Capacity – Btuh| 51,000| 68,000
AFUE| 95| 95
Blower D x W| 11 x 8| 11 x 10
Motor H.P. – Speed – Type| 3/4 – 5 – ECM| 1 – 5 – ECM
Motor FLA| 8.8| 11.5
Rated Ext. SP – In. W.C.| 0.5| 0.5
Temperature Rise Range – ºF| 25-55| 35-65
Shipping Weights| 120lbs| 125lbs
Note : All models are 115V, 60 Hz. Gas Connections are 1/2″ N.P.T. AFUE = Annual Fuel Utilization Efficiency (a) Ratings to 2,000 ft. Over 2,000 ft. reduce 4% for each 1,000 ft. above sea level.
ACCESSORIES
G7S (D, M) KITS
Description| SKU
2″ Concentric vent kit, Canadian and US approved| 904952
3″ Concentric vent kit, Canadian and US approved| 904953
“B”, “C”, “D” Cabinet downflow sub base kit| 904911
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 (04/2020)
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