NuTone KG7S Gas Furnace Owner’s Manual

**NuTone KG7S Gas Furnace Owner’s Manual

**

TECHNICAL SPECIFICATIONS

KG7S (A and K Series)

High Efficiency Upflow/Horizontal and Downflow Gas Furnaces

Induced Draft – 80+ AFUE Input 45,000 – 126,000 Btuh

The high efficiency gas furnace may be installed free standing in a utility room, basement, or enclosed in an alcove or closet. The rounded corner jacket provides a pleasing “appliance appearance.” Design certified by CSA for application in the United States and Canada.

WARRANTY

• 10-year all-parts warranty.
• 1 Year Quality Pledge to replace the unit if the heat exchanger fails within the first year of operation, to the original owner.
• Consumer product registration required for 10 year All Parts Warranty and Quality Pledge within a limited period of time after the installation. See current warranty document or visit our consumer web site listed on the back of this document for warranty details.
• When registered, this product is upgraded to a limited lifetime heat exchanger warranty.

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.
• 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 assures a long life.
• 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 ignitor: Innovative application of an appliance type ignitor with a 20 year history of reliability. Utilizes proven Smartlite® technology.
• Color coded wire harness: Designed to fit the components, all with quick-connect fittings for ease of service and replacement.
• High static blowers: All models equipped with high static blowers.
• 90 second cooling cycle blower-off delay (TDR): increases cooling performance when matched with a NORDYNE coil.
• Flexible category I venting system: May be vented with dedicated venting system or common vented with other category one appliances.
• 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 withoutcounting flashes.
• Integrated control board: Incorporates connections for electronic air cleaner and humidifier.
• Two piece door design: Enhances furnace appearance and uses captured screws to prevent loosing door screws.

GAS FURNACE COMPONENTS

Upflow/Horizontal Gas Furnace

Downflow Gas Furnace

DIMENSIONS

*SA Model #’s| Dimension “A”| Dimension “B”| Dimension “C”| Dimension “D”
---|---|---|---|---
045-23A| 14 1/4| 10 3/4| 12 5/8| 12 7/8
054-23A
072-24B| 17 1/2| 11 3/4| 15 7/8| 16 1/8
090-24B
072-35C| 21| 14| 19 3/8| 19 7/8
090-35C
108-35C
126-45D| 24 1/2| 15 1/4| 22 7/8| 23 1/8

KG7SA 80+ High Efficiency Upflow/Horizontal Series

*SK Model #’s| Dimension “A”| Dimension “B”| Dimension “C”| Dimension “D”
---|---|---|---|---
054-23A| 14 1/4| 10 3/4| 12 5/8| 12 7/8
072-24B| 17 1/2| 11 3/4| 15 7/8| 16 1/8
090-24B
108-35C| 21| 14| 19 3/8| 19 5/8
126-45D| 24 1/2| 15 1/4| 22 7/8| 23 1/8

KG7SK 80+ High Efficiency Downflow Series

BLOWER PERFORMANCE – KG7SA

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( )-23ABottom Return| 45,000| High* Med-HighMed-Low Low| 1260955825655| 26354051| 1205950800630| 28354253| 1145940760610| 29354455| 1080935730580| 313646| 1025925690550| 333648| 960860650520| 353951| 890800600480| 3742| 825725530435| 4046|
5669| 6377|
57| 61| 64|
** SA045( )-23ASide Return| * 45,000| High Med-HighMed-Low Low| 13501025885700| 25333848| 12901015855675| 26333949| 12251005815655| 27334151| 11551000780620| 293343| 1100990740590| 303445| 1025920695555| 333648| 950855640515| 353952| 885775565465| 3843|
5972|
54| 56| 60| 65|
** SA054( )-23ABottom Return| *** 54,000| HighMed-High Med-Low Low| 1260955825655| 324248| 1205950800630| 334250| 1145940760610| 354353| 1080935730580| 374355| 1025925690550| 3943| 960860650520| 4247| 890800600480| 4550| 825725530435| 4855|
5873| 6277| 6783| 7592|
61| 63| 66| 69|
SA054( )-23ASide Return| 54,000| High* Med-HighMed-Low Low| 13501025885700| 303945| 12901015855675| 313947| 12251005815655| 334049| 11551000780620| 354051| 1100990740590| 364054| 1025920695555| 3943| 950855640515| 4247| 885775565465| 4552|
5872| 6378| 7186|
57| 59| 61| 65| 68|
** SA072( )-24BBottom Return| * 72,000| HighMed-High Med-Low Low| 168513301175930| 32404557| 164012951155895| 33414660| 160512751125885| 33424760| 156512451100850| 344348| 151512151075825| 354450| 147511851045800| 364551| 141511351010770| 384753| 13451070955740| 405056|
63| 65| 67| 69| 72|
** SA072( )-24BSide Return| *** 72,000| High Med-HighMed-Low Low| 177014001235975| 30384355| 172013601215940| 31394457| 168513401180930| 32404557| 164513101155890| 32414660| 159012751130865| 344247| 155012451100840| 344348| 148511901060810| 364550| 141511251005775| 384753|
62| 63| 66| 69|
SA090( )-24BBottom Return| 90,000| High*Med-High Med-Low Low| 161012951155880| 415158| 157512601130860| 425359| 153012351100830| 445461| 148512201070800| 4555| 144011751035765| 4657| 138511351015740| 4859| 13401095965675| 50| 12751015920660| 52|
61| 66|
6283| 6487| 6690| 69| 72|
76| 78| 80| 99| 101|
** SA090( )-24BSide Return| * 90,000| HighMed-High Med-Low Low| 169013601215925| 394955| 165513251190900| 405056| 161013001155870| 415158| 156012801125840| 435259| 151012351090800| 4454| 145511901065775| 4656| 140511501015710| 4758| 13401065965695| 50|
63|
61| 63| 6694| 69|
72| 74| 77| 79| 83| 86| 96|
** SA072( )-35CBottom Return| *** 72,000| High Med-HighMed-Low Low| 1950186013001165| 27| 1865178012401115| 29| 1790171012001060| 30| 1715163511601025| 31| 163015751120985| 33| 155015001065940| 34| 14751415995890| 36385460| 13901325910825| 38405965|
29| 30| 31| 33| 34| 365057|
4146| 4348| 4450| 4652| 4854|
SA072( )-35CSide Return| 72,000| High* Med-HighMed-Low** Low| 2030193513501215| 2628| 1940185012901160| 2729| 1860178012501105| 2930| 1785170012051065| 3031| 1695134011651025| 31| 161515601110980| 3334| 153514701035925| 35365258| 14451380945860| 37395662|
404652|
4044| 4146| 4348| 4450| 4854|

BLOWER PERFORMANCE – KG7SA Continued

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|
SA072( )-35CSide + Bottom or 2 Sides| * 72,000| High Med-HighMed-Low Low| 2050195513651225| 26| 1960187013001170| 27| 1880180012601115| 28| 1800171512201075| 30| 1710165511751035| 31| 163015751120985| 33| 155014851045935| 34| 14601390955865| 37385662|
27| 29| 30| 31| 32| 34| 365157|
3944| 4146| 4248| 4450| 4552| 4854|
** SA090( )-35CBottom Return| *** 90,000| HighMed-High Med-Low Low| 1940182012901145| 34| 1860176012451110| 36385460| 1790169512001070| 37395662| 1710162011551035| 39415864| 1625154511101000| 414360| 154014661060950| 434563| 14501380995905| 4648| 13551280915835| 4952|
375258|
67| 73|
67| 70| 74| 80|
SA090( )-35CSide Return| 90,000| High*Med-High Med-Low Low| 2020189513451190| 33| 1935183012951155| 34| 1860176512501115| 36385360| 1780168512001075| 37405662| 1690161011551040| 39415864| 160015251100980| 424461| 151014351035940| 444664| 14101330950870| 4750|
355056| 365158|
70|
68| 71| 77|
SA090( )-35CSide + Bottom or 2 Sides| ** 90,000| High*Med-High Med- LowLow| 2040191013551205| 33| 1955185013101165| 34| 1880178012601125| 35375359| 1795170012151085| 37395561| 1705162511651050| 39415763| 1620154011151000| 414360| 152514501050950| 444663| 14251345960875| 4750|
354955| 365157|
69|
67| 70| 76|
** SA108( )-35CBottom Return| * 108,000| HighMed-High Med-Low Low| 2205205017001390| 36394758| 2150199516801370| 37404858| 2095195516451355| 38414959| 2030189516101320| 39425061| 1970184015651300| 41435162| 1900177515251270| 42455263| 1830170014601225| 44475565| 1740161013751175| 465058|
68|
** SA108( )-35CSide Return| *** 108,000| HighMed-High Med-Low Low| 2295213017701445| 35384555| 2235207517501425| 36394656| 2180203517101410| 37394757| 2110197016751375| 38414858| 2050191516301350| 39424959| 1975184515851320| 41435061| 1900176515201275| 42455363| 1810167514301225| 44485665|
SA108( )-35CSide + Bottom or 2 Sides| * 108,000| HighMed-High Med- LowLow| 2315215517851460| 35374555| 2260209517651440| 35384556| 2200205517251425| 36394656| 2130199016901385| 38404758| 2070193016451365| 39414959| 1995186516001335| 40435060| 1925178515351285| 42455262| 1825169014451235| 44475565|
SA126( )-45DBottom only or 2 openings| ** 126,000| High*Med-High Med- LowLow| 2255207517201360| 41455469| 2200202516951375| 42465568| 2125197016551365| 44475668| 2065194016301315| 454857| 2010187515801310| 465059| 1935181015201300| 485261| 1855175014551260| 505364| 1755168013901230| 535667|
71| 71| 72| 74| 76|
SA126( )-45DSide Return| 126,000| High*Med-High** Med-Low Low| 2230205517051345| 42455569| 2180200516801360| 43475669| 2105195016401350| 44485769| 2045192016151300| 464958| 1990185515651230| 475060| 1915179015051290| 495262| 1835173514401250| 515465| 1740166513751220| 545668|
72| 76| 72| 75| 77|

BLOWER PERFORMANCE – KG7SK

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
SK054( )-23A| 54,000| High* Med-HighMed-Low Low| 13751155790650| 293551| 13401130775640| 303552| 13001110765630| 313652| 12701085750610| 313753| 12251055730590| 333855| 11751015700565| 3439| 1115975665530| 3641| 1035910610480| 3944
57| 60| 66
62| 63| 63| 66| 68| 71| 75| 83
SK072( )-24B| 72,000| High* Med-HighMed-Low* Low| 161012951155910| 33414659| 159012751135885| 34424760| 157512601115860| 344248| 156012501095835| 344349| 154012201065810| 354450| 149511951040785| 364551| 146011701015765| 374653| 14151120980735| 384854
62| 64| 66| 68| 70| 73
SK090( )-24B| 90,000| High Med-HighMed-Low Low| 167513301180940| 405056| 165513151165925| 405157| 164013001150900| 415158| 162012801135880| 415259| 159012551115850| 425360| 156012301090825| 435461| 152012001060795| 445663| 147511501010760| 455866
71| 72| 74| 76| 78| 81| 84| 88
SK108( )-35C| 108,000| High* Med-HighMed-Low* Low| 2395219017851145| 333745| 2335213517701110| 343745| 2285211517401070| 353846| 2230208017251035| 363846| 2200203016851000| 363947| 214019751645950| 374149| 208019151615905| 384250| 200018101565835| 404451
70| 72| 75| 77| 80| 84| 88| 96
SK126( )-45D| 126,000| High Med-HighMed-Low** Low| 2445219517951480| 38435263| 2395217017801475| 39435263| 2385214017701450| 39445364| 2330212017601440| 40445365| 2275209017251440| 41455465| 2225203016901415| 424655| 2130197516551405| 444756| 2015185516101375| 465058
66| 66| 68

MODEL IDENTIFICATION CODE

SPECIFICATIONS

KG7SA MODEL NUMBERS| -045-23A| -054-23A| -072-24B| -090-24B| -072-35C| -090-35C| -108-35C| -126-45D
---|---|---|---|---|---|---|---|---
Input – Btuh (a)| 45,000| 54,000| 72,000| 90,000| 72,000| 90,000| 108,000| 126,000
Heating Capacity – Btuh| 36,000| 43,200| 57,600| 72,000| 57,600| 72,000| 86,400| 100,800
AFUE| 80.0| 80.0| 80.0| 80.0| 80.0| 80.0| 80.0| 80.0
Blower D x W| 10 x 6| 10 x 6| 11 x 8| 11 x 8| 10 x 10| 10 x 10| 11 x 10| 11 x 10
Motor H.P. – Speed – Type| 1/3 – 4 – PSC| 1/3 – 4 – PSC| 1/2 – 4 – PSC| 1/2 – 4 – PSC| 1/2 – 4 – PSC| 1/2 – 4 – PSC| 1.0 – 4 – PSC| 1.0 – 4 – PSC
Motor FLA| 4.80| 4.80| 8.20| 8.20| 7.50| 7.50| 13.75| 13.75
Rated Ext. SP – In. W.C.| 0.5| 0.5| 0.5| 0.5| 0.5| 0.5| 0.5| 0.5
Temperature Rise Range – ºF| 30-60| 30-60| 35-65| 35-65| 35-65| 35-65| 40-70| 40-70
Shipping Weights| 100lbs| 100lbs| 110lbs| 115lbs| 115lbs| 120lbs| 125lbs| 145lbs
KG7SK MODEL NUMBERS| -054-23A| -072-24B| -090-24B| -108-35C| -126-45D
---|---|---|---|---|---
Input – Btuh (a)| 54,000| 72,000| 90,000| 108,000| 126,000
Heating Capacity – Btuh| 43,200| 57,600| 72,000| 86,400| 100,800
AFUE| 80.0| 80.0| 80.0| 80.0| 80.0
Blower D x W| 10 x 6| 11 x 8| 11 x 8| 11 x 10| 11 x 10
Motor H.P. – Speed – Type| 1/3 – 4 – PSC| 1/2 – 4 – PSC| 1/2 – 4 – PSC| 3/4 – 4 – PSC| 1.0 – 4 -PSC
Motor FLA| 4.80| 8.20| 8.20| 13.75| 13.75
Rated Ext. SP – In. W.C.| 0.5| 0.5| 0.5| 0.5| 0.5
Temperature Rise Range – ºF| 30-60| 35-65| 35-65| 40-70| 40-70
Shipping Weights| 100lbs| 110lbs| 115lbs| 125lbs| 145lbs

ACCESSORIES

KG7S (A, K) KITS

Description| SKU
“A” Cabinet fixed speed, high efficiency, FSHE| 904872
“B” Cabinet fixed speed, high efficiency, FSHE| 904873
“C” Cabinet fixed speed, high efficiency, FSHE| 904874
“D” Cabinet fixed speed, high efficiency, FSHE| 904875
“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
“A” Cabinet downflow sub base kit| 902974
“B”, “C”, “D” Cabinet downflow sub base kit| 904911
U.S. LP Conversion kit (0 to 10,000 ft.)| 904914
Canada LP Conversion kit (0 to 4,500 ft.)| 904915
Bottom return filter 20 per box, “A” cabinet| 903088
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

GENERAL TERMS OF LIMITED WARRANTY

NORDYNE will furnish a replacement for any part of this product which fails in normal use and service within the first ten years of installation, in accordance with the terms of the warranty.

For complete details of the Limited Warranty, including applicable terms and conditions, see your local installer or contact the NORDYNE warranty department for a copy.

References

• TCPDF

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