NuTone KG7T Two Stage Fixed Speed Gas Furnace User Manual

: June 15, 2024
: NuTone

Table of Contents

NuTone KG7T Two-Stage Fixed Speed Gas Furnace
WARRANTY
FEATURES and BENEFITS
LOCATION OF FURNACE COMPONENTS
DIMENSIONS
SPECIFICATIONS
ACCESSORIES
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NuTone KG7T Two-Stage Fixed Speed Gas Furnace

The high-efficiency upflow gas furnace may be installed free-standing in a utility room, or 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.

WARRANTY

10-year all-parts warranty.
1 Year Quality Pledge to replace the unit if the heat exchanger fails within the first 1 year of operation, to the original owner.
Consumer product registration is required for 10 years of All Parts Warranty and Quality Pledge within a limited period after the installation.
See the current warranty document or visit our consumer website 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 the product will arrive to the homeowner dent-free.
30 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 the life of the heat exchanger.
Hot surface igniter: Innovative application of an appliance-type igniter with a 20-year history of reliability. Utilizes proven Smartlite® technology.
Colour-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 installation flexibility.
High Static Blowers: All models are 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 ensure a long life.
90-second fixed cooling cycle blower-off delay (TDR): Increases cooling performance when matched with a NORDYNE coil.
Variable speed blower kit: Upgradable to full variable speed with the kit.
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, humidifier and twinning.
Two-piece door design: Enhances furnace appearance and uses captured screws to prevent losing door screws.
Sealed vestibule: Reduces burner and inducer sound levels.
Energy efficient brushless DC (ECM) motor: Gives up to 1 SEER point efficiency gain in cooling.

LOCATION OF FURNACE COMPONENTS

DIMENSIONS

TC 95.1% Upflow/Horizontal Furnace

TL 95.1% Downflow Furnace

MODEL IDENTIFICATION CODE

SPECIFICATIONS

KG7TC/TL

MODEL NUMBERS:

| -060D-23B| -080D-35C| -100D-35C| -120D-45D
---|---|---|---|---
Input – Btuh (a)| 60,000 / 39,000| 80,000 / 52,000| 100,000 / 65,000| 120,000 / 78,000
Heating Capacity – Btuh| 57,000 / 37,050| 76,000 / 49,400| 95,000 / 61,750| 114,000 / 74,100
AFUE| 95.1| 95.1| 95.1| 95.1*
Blower D x W| 11 x 8| 11 x 10| 11 x 10| 11 x 10
Motor H.P. – Speed – Type| 1/2 – BLDC| 3/4 – BLDC| 3/4 – BLDC| 1 – BLDC
Motor FLA| 6.2| 8.7| 8.7| 11.7
Rated Ext. SP – In. W.C.| 0.5| 0.5| 0.5| 0.5
Temperature Rise Range – ºF| 30-60| 35-65| 35-65| 40-70
Shipping Weights| 125lbs| 135lbs| 145lbs| 160lbs

Note
All models are 115V, and 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.

BLOWER PERFORMANCE – KG7TC/TL

KG7TC/TL – 95.1% AFUE, Two Stage Gas Furnace

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

TC/TL-060D-B

| ****

60000

| 0| 0| 0| 0| | | | | | | | | | | | | | | |
1| 0| 0| 0| | | | | | | | | | | | | | | |
0| 1| 0| 0| | | | | | | | | | | | | | | |
1| 1| 0| 0| 725| 73| | | | | | | | | | | | | |
0| 0| 1| 0| 810| 65| | | | | | | | | | | | | |
1| 0| 1| 0| 940| 56| 890| 59| 845| 62| 795| 66| 750| 70| 700| 75| | | |
0| 1| 1| 0| 990| 53| 945| 56| 905| 58| 860| 61| 820| 64| 775| 68| 735| 72| 690| 76
1| 1| 1| 0| 1055| 50| 1015| 52| 970| 54| 930| 57| 890| 59| 845| 62| 805| 66| 760| 69
0| 0| 0| 1| 1135| 47| 1095| 48| 1055| 50| 1010| 52| 960| 55| 930| 57| 890| 59| 850| 62
1| 0| 0| 1| 1185| 45| 1145| 46| 1105| 48| 1065| 50| 1030| 51| 990| 53| 950| 56| 910| 58
0| 1| 0| 1| 1250| 42| 1210| 44| 1170| 45| 1135| 47| 1095| 48| 1055| 50| 1020| 52| 980| 54
1| 1| 0| 1| 1290| 41| 1255| 42| 1220| 43| 1180| 45| 1145| 46| 1110| 48| 1075| 49| 1040| 51
0| 0| 1| 1| 1315| 40| 1275| 41| 1240| 43| 1200| 44| 1160| 45| 1120| 47| 1085| 49| 1045| 51
1| 0| 1| 1| 1350| 39| 1315| 40| 1280| 41| 1245| 42| 1205| 44| 1170| 45| 1135| 47| 1100| 48
0| 1| 1| 1| 1390| 38| 1350| 39| 1315| 40| 1275| 41| 1240| 43| 1200| 44| 1160| 45| 1125| 47
1| 1| 1| 1| 1420| 37| 1380| 38| 1345| 39| 1310| 40| 1270| 42| 1235| 43| 1200| 44| 1160| 45

TC/TL-080D-C

| ****

80000

| 0| 0| 0| 0| 1125| 55| 1040| 68| 960| 73| 880| 80| 795| 89| | | | | |
1| 0| 0| 0| 1205| 58| 1120| 63| 1040| 68| 960| 73| 875| 80| 795| 89| | | |
0| 1| 0| 0| 1305| 54| 1225| 57| 1150| 61| 1070| 66| 995| 71| 915| 77| 840| 84| |
1| 1| 0| 0| 1430| 49| 1350| 52| 1270| 55| 1190| 59| 1110| 63| 1030| 68| 950| 74| 865| 81
0| 0| 1| 0| 1525| 46| 1450| 49| 1375| 51| 1300| 54| 1225| 57| 1150| 61| 1075| 65| 1000| 70
1| 0| 1| 0| 1620| 43| 1540| 46| 1465| 48| 1390| 51| 1315| 54| 1240| 57| 1165| 60| 1090| 65
0| 1| 1| 0| 1695| 42| 1620| 43| 1545| 46| 1465| 48| 1390| 51| 1315| 54| 1235| 57| 1160| 61
1| 1| 1| 0| 1770| 40| 1700| 41| 1630| 43| 1555| 45| 1485| 47| 1410| 50| 1340| 53| 1265| 56
0| 0| 0| 1| 1875| 38| 1805| 39| 1730| 41| 1655| 43| 1580| 45| 1510| 47| 1435| 49| 1340| 53
1| 0| 0| 1| 1905| 37| 1840| 38| 1775| 40| 1710| 41| 1640| 43| 1575| 45| 1510| 47| 1445| 49
0| 1| 0| 1| 1980| 36| 1910| 37| 1845| 38| 1780| 40| 1715| 41| 1650| 43| 1580| 45| 1515| 46
1| 1| 0| 1| 2025| 35| 1960| 36| 1895| 37| 1830| 38| 1765| 40| 1700| 41| 1635| 43| 1570| 45
0| 0| 1| 1| 2085| 34| 2025| 35| 1960| 36| 1900| 37| 1840| 38| 1775| 40| 1715| 41| 1655| 43
1| 0| 1| 1| 2135| 33| 2070| 34| 2010| 35| 1945| 36| 1880| 37| 1815| 39| 1750| 40| 1685| 42
0| 1| 1| 1| 2200| 32| 2145| 33| 2090| 34| 2035| 35| 1980| 36| 1925| 37| 1870| 38| 1820| 39
1| 1| 1| 1| 2280| 31| 2225| 32| 2170| 32| 2115| 33| 2065| 34| 2010| 35| 1955| 36| 1900| 37

Notes

Motor Switch Settings are for heating speeds using HEAT switches 1, 2, 3, & 4 and cooling speeds using COOL switches 5, 6, 7, & 8.
Two openings are recommended for airflows above 1600 CFM if the filter(s) is (are) adjacent to the furnace.
Data is shown without a filter.
Temperature rises in the table are approximate. Actual temperature rises may vary.
Temperature rises that are shaded in grey are for reference only. These conditions are not recommended.

BLOWER PERFORMANCE – KG7TC/TL Continued

KG7TC/TL – 95.1% AFUE, Two Stage Gas Furnace

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

TC/TL-100D-C

| ****

100000

| 0| 0| 0| 0| 1125| 78| 1040| 85| | | | | | | | | | | |
1| 0| 0| 0| 1205| 73| 1120| 79| 1040| 85| | | | | | | | | |
0| 1| 0| 0| 1305| 67| 1225| 72| 1150| 76| 1070| 82| 995| 88| | | | | |
1| 1| 0| 0| 1430| 62| 1350| 65| 1270| 69| 1190| 74| 1110| 79| 1030| 85| | | |
0| 0| 1| 0| 1525| 58| 1450| 61| 1375| 64| 1300| 68| 1225| 72| 1150| 76| 1075| 82| 1000| 88
1| 0| 1| 0| 1620| 54| 1540| 57| 1465| 60| 1390| 63| 1315| 67| 1240| 71| 1165| 76| 1090| 81
0| 1| 1| 0| 1695| 52| 1620| 54| 1545| 57| 1465| 60| 1390| 63| 1315| 67| 1235| 71| 1160| 76
1| 1| 1| 0| 1770| 50| 1700| 52| 1630| 54| 1555| 57| 1485| 59| 1410| 62| 1340| 66| 1265| 70
0| 0| 0| 1| 1875| 47| 1805| 49| 1730| 51| 1655| 53| 1580| 56| 1510| 58| 1435| 61| 1340| 66
1| 0| 0| 1| 1905| 46| 1840| 48| 1775| 50| 1710| 51| 1640| 54| 1575| 56| 1510| 58| 1445| 61
0| 1| 0| 1| 1980| 44| 1910| 46| 1845| 48| 1780| 49| 1715| 51| 1650| 53| 1580| 56| 1515| 58
1| 1| 0| 1| 2025| 43| 1960| 45| 1895| 46| 1830| 48| 1765| 50| 1700| 52| 1635| 54| 1570| 56
0| 0| 1| 1| 2085| 42| 2025| 43| 1960| 45| 1900| 46| 1840| 48| 1775| 50| 1715| 51| 1655| 53
1| 0| 1| 1| 2135| 41| 2070| 42| 2010| 44| 1945| 45| 1880| 47| 1815| 48| 1750| 50| 1685| 52
0| 1| 1| 1| 2200| 40| 2145| 41| 2090| 42| 2035| 43| 1980| 44| 1925| 46| 1870| 47| 1820| 48
1| 1| 1| 1| 2280| 39| 2225| 40| 2170| 41| 2115| 42| 2065| 43| 2010| 44| 1955| 45| 1900| 46

TC/TL-120D-D

| ****

120000

| 0| 0| 0| 0| 1395| 76| 1350| 78| 1305| 81| 1260| 84| 1210| 87| 1165| 91| 1120| 94| |
1| 0| 0| 0| 1465| 72| 1420| 74| 1375| 77| 1330| 79| 1290| 82| 1245| 85| 1200| 88| 1155| 91
0| 1| 0| 0| 1555| 68| 1510| 70| 1470| 72| 1425| 74| 1380| 76| 1340| 79| 1295| 82| 1250| 84
1| 1| 0| 0| 1625| 65| 1585| 67| 1540| 69| 1500| 70| 1460| 72| 1415| 75| 1375| 77| 1335| 79
0| 0| 1| 0| 1690| 62| 1650| 64| 1610| 66| 1570| 67| 1530| 69| 1485| 71| 1445| 73| 1405| 75
1| 0| 1| 0| 1760| 60| 1715| 62| 1670| 63| 1625| 65| 1575| 67| 1530| 69| 1485| 71| 1440| 73
0| 1| 1| 0| 1835| 58| 1790| 59| 1745| 60| 1695| 62| 1650| 64| 1605| 66| 1555| 68| 1510| 70
1| 1| 1| 0| 1885| 56| 1840| 57| 1790| 59| 1745| 60| 1700| 62| 1655| 64| 1610| 66| 1565| 67
0| 0| 0| 1| 1945| 54| 1900| 56| 1850| 57| 1805| 58| 1760| 60| 1710| 62| 1665| 63| 1620| 65
1| 0| 0| 1| 1950| 54| 1905| 55| 1860| 57| 1820| 58| 1775| 59| 1735| 61| 1690| 62| 1650| 64
0| 1| 0| 1| 2075| 51| 2030| 52| 1990| 53| 1945| 54| 1900| 56| 1855| 57| 1810| 58| 1770| 60
1| 1| 0| 1| 2125| 50| 2085| 51| 2040| 52| 2000| 53| 1955| 54| 1910| 55| 1870| 56| 1825| 58
0| 0| 1| 1| 2170| 49| 2130| 50| 2090| 51| 2045| 52| 2005| 53| 1965| 54| 1925| 55| 1880| 56
1| 0| 1| 1| 2215| 48| 2180| 48| 2140| 49| 2105| 50| 2070| 51| 2035| 52| 2000| 53| 1965| 54
0| 1| 1| 1| | | | | | | | | 2225| 47| 2165| 49| 2100| 50| 2040| 52
1| 1| 1| 1| | | | | | | | | | | 2170| 49| 2120| 50| 2065| 51

Notes

Motor Switch Settings are for heating speeds using HEAT switches 1, 2, 3, & 4 and cooling speeds using COOL switches 5, 6, 7, & 8.
Two openings are recommended for airflows above 1600 CFM if the filter(s) is (are) adjacent to the furnace.
Data is shown without a filter.
Temperature rises in the table are approximate. Actual temperature rises may vary.
Temperature rises that are shaded in grey 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 the Vent Table below for specified sizes and allowable lengths.

VENT TABLE

FURNACE MODELS (BTU)

| ****

FURNACE INSTALLATION

| SINGLE PIPE LENGTH (FT.)

with 1 long radius elbow**

| DIRECT VENT,

DUAL PIPE LENGTH (ft.) WITH

1 long radius elbow on each pipe**

---|---|---|---
OUTLET| OUTLET| INLET/OUTLET| INLET/OUTLET
2” Diameter| 3” Diameter| 2” Diameter| 3” Diameter

60,000

| Upflow| 90| 90| 90| 90
Horizontal| 50| 90| 50| 90
Downflow| 30| 90| 30| 90

80,000

| Upflow| 90| 90| 90| 90
Horizontal| 30| 90| 30| 90
Downflow| 30| 90| 30| 90

100,000

| Upflow| 60| 90| 60| 90
Horizontal| 30| 90| 30| 90
Downflow| 30| 90| 25| 90

120,000

| Upflow| N/A| 90| N/A| 90
Horizontal| N/A| 90| N/A| 90
Downflow| N/A| 90| N/A| 90

NOTES

Subtract 2.5 ft. for each additional 2-inch long radius elbow, 5 ft. for each additional 2-inch short radius elbow, 3.5 ft. for each additional 3-inch long radius elbow, and 7 ft. for each additional 3-inch short radius elbow.
Subtract 5ft for each 2” tee and 8ft for each 3” tee.
Two 45-degree elbows are equivalent to one 90-degree elbow.
This table applies to elevations from sea level to 2,000 ft. For higher elevations, decrease pipe lengths by 8% per 1,000 ft of altitude.

ACCESSORIES

KG7TC/TL KITS

GENERAL TERMS OF LIMITED WARRANTY
NORDYNE will furnish a replacement for any part of this product that fails in normal use and service within the first ten years of installation, per 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.

Specifications and illustrations are subject to change without notice and without incurring obligations. Printed in U.S.A (02/2011) 835C-0211 (Replaces 835C-0310)