NuTone FG7T Two Stage Variable Speed Condensing Upflow/Horizontal and

Downflow Gas Furnaces

Product Information

Technical Specifications

• Model: FG7T (C and L Series)

• Type: Two Stage, Variable Speed, Condensing Upflow/Horizontal
  and Downflow Gas Furnaces

• Induced Draft: 95.1 AFUE

• Input: 60,000 – 120,000 Btuh

Features and Benefits

• 100% fired and tested

• Best packaging in the industry

• 30 second blower delay

• 30 second post purge

• Two Stage Inducer

• Hot surface igniter

• Color coded wire harness

• Flexible category IV venting system

• High Static Blowers

• Low Boy Height

• Tubular primary heat exchanger

• 90 second fixed cooling cycle blower-off delay (TDR)

• LP convertible

• Diagnostic lights for easy troubleshooting without counting
  flashes

• Incorporates integrated control board

• Two piece door design

• Blower Compartment

• Sealed Vestibule

Location of Furnace Components

*Upflow / Horizontal Furnace (TC SERIES)**

• Flame Sensor
• Finish Flange
• Roll-Out Switch
• Burner Assembly
• Pressure Switches (Inducer)
• Main Air Limit Switch
• Inducer Limit Switch
• Inducer Assembly
• Blower Door Switch
• Air Flow
• Igniter
• Gas Valve
• Furnace Control Board
• Pressure Switches (Condensate)
• Transformer
• Motor Control Box
• Motor Choke (C & D cabinets only)
• Motor Control Board
• Blower Assembly

*Downflow Furnace (TL SERIES)**

• Blower Assembly (behind blower panel)
• Motor Choke (C & D cabinets only)
• Finish Flange
• Furnace Control Board
• Motor Control Board
• Blower Door Switch (behind blower panel)
• Transformer
• Pressure Switches
• Vent Limit Switch
• Air Flow
• Inducer Assembly
• Gas Valve
• Igniter
• Main Air Limit Switch
• Flame Sensor
• Burner Assembly
• Roll-Out Switch
• Gas Manifold

Dimensions

*TC

*TL

Blower Performance – FG7TC/TL

B Cabinet Switch Settings

• HEAT: *TC/TL-060D-VB Models, Input (BTU): 60000
• HEAT: *TC/TL-120D-VD Models, Input (BTU): 120000

C Cabinet Switch Settings

• HEAT: *TC/TL-080D-VC Models, Input (BTU): 80000
• HEAT: *TC/TL-100D-VC Models, Input (BTU): 100000

Cooling Airflow

A CABINET Switch Settings (0 = OFF, 1 = ON)

• CFM: HEAT, COOL: 1-4, 5, 6, 7, 8
• Nominal A/C & HP Capacity: 2.5 TON

B CABINET Switch Settings (0 = OFF, 1 = ON)

• HEAT, COOL: 1-4, 5, 6, 7, 8
• CFM: LOW, HIGH
• Nominal A/C & HP Capacity: 2 TON

C CABINET Switch Settings (0 = OFF, 1 = ON)

• CFM: HEAT, COOL: 1-4, 5, 6, 7, 8
• Nominal A/C & HP Capacity: 3.5 TON

D CABINET Switch Settings (0 = OFF, 1 = ON)

• CFM: HEAT, COOL: 1-4, 5, 6, 7, 8
• Nominal A/C & HP Capacity: 5 TON

Venting

Furnace Models (BTU)

FAQ

Q: What is the AFUE of the FG7T (C and L Series) gas furnaces?

A: The AFUE of the FG7T (C and L Series) gas furnaces is 95.1.

Q: What is the input range of the FG7T (C and L Series) gas furnaces?

A: The input range of the FG7T (C and L Series) gas furnaces is 60,000 – 120,000 Btuh.

Q: What is the blower delay time for the FG7T (C and L Series) gas furnaces?

A: The blower delay time for the FG7T (C and L Series) gas furnaces is 30 seconds.

Q: Is the FG7T (C and L Series) gas furnaces LP convertible?

A: Yes, the FG7T (C and L Series) gas furnaces are LP convertible.

Q: What is the cooling airflow capacity for the FG7TC/TL gas furnaces?

A: The cooling airflow capacity varies depending on the cabinet and switch settings. Please refer to the product manual for specific details.

TECHNICAL SPECIFICATIONS

FG7T (C and L Series) ISEER Smartlite®

Two Stage, Variable Speed, Condensing Upflow/Horizontal and Downflow Gas Furnaces
Induced Draft – 95.1 AFUE
Input 60,000 – 120,000 Btuh

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.

FEATURES and BENEFITS

• • iSEER: Energy efficient brushless DC (ECM) motor gives
  up to 1 SEER point efficiency gain in cooling.
  • 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.
  • Two Stage Inducer: Optimizes efficiency on first stage
  heat and reduces sound levels.
  • 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.
  • 90 second fixed cooling cycle blower-off delay
  (DR): Increases cooling performance when matched
  with a NORDYNE coil.
  • 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.

LOCATION OF FURNACE COMPONENTS

UPFLOW / HORIZONTAL FURNACE (*TC SERIES)

*DOWNFLOW FURNACE (TL SERIES)**

DIMENSIONS

BLOWER PERFORMANCE – FG7TC/TL

Nominal Heatina Airflows (CFM) and Temperature Rise (°F)

B Cabinet| *TC/TL-060D-VB

Models

---|---
Switch Settings

HEAT

| Input (BTU) 60000

!/”

| ****

2

| ****

3

| ****

4

| ****

&-

| 4EMP

2ISE ( &)

1| 0| 0| 0| 1000| 53
1| 0| 0| 1| 1100| 48
1| 0| 1| 0| 1200| 44
1| 0| 1| 1| 1300| 41
1| 1| 0| 0| 1400| 38
1| 1| 0| 1| 1500| 35
1| 1| 1| 0| 1600| 33
1| 1| 1| 1| 1700| 31
D Cabinet| *TC/TL-120D-VD

Models

---|---
Switch Settings HEAT| Input (BTU) 120000

!/”

| ****

2

| ****

3

| ****

4

| ****

&-

| 4EMP

2ISE ( &)

| 0| 0| 0| 1500| 70

| 0| 0| 1| 1615| 65

| 0| 1| 0| 1730| 61

| 0| 1| 1| 1845| 57

| 1| 0| 0| 1960| 54

| 1| 0| 1| 2075| 51

| 1| 1| 0| 2190| 48

| 1| 1| 1| 2305| 46

C Cabinet| *TC/TL-080D-VC

Models

| *TC/TL-100D-VC

Models

---|---|---
Switch Settings

HEAT

| Input (BTU) 80000| Input (BTU) 100000

!/”

| ****

2

| ****

3

| ****

4

| ****

&-

| 4EMP

2ISE ( &)

| ****

&-

| 4EMP

2ISE ( &)

| 0| 0| 0| 1000| 70| 1000| 88

| 0| 0| 1| 1115| 63| 1115| 79

| 0| 1| 0| 1230| 57| 1230| 72

| 0| 1| 1| 1345| 52| 1345| 65

| 1| 0| 0| 1460| 48| 1460| 60

| 1| 0| 1| 1575| 45| 1575| 56

| 1| 1| 0| 1690| 42| 1690| 52

| 1| 1| 1| 1805| 39| 1805| 49

Switch not used – can be 0 or 1

Notes:

1. Two openings are recommended for airflow above 1600 CFM If the filters) is (are) adjacent to the furnace.

2. Temperature rises in the table are approximate.
   Actual temperature rises may vary.

3. Temperature risos that are shaded in grey are for reference only. These conditions are not

4. The bower operating range is 1410. 8′ ESP in we.

COOLING AIRFLOW

“A” CABINET

Switch Settings (0 = OFF, 1 = ON)| ****

CFM

| ****

Nominal A/C & HP Capacity

HEAT| COOL
1- 4| 5| 6| 7| 8| LOW| HIGH
0| 0| 0| 0| 0| 350| 525|  |  | 1.5 TON|
0| 0| 0| 0| 1| 390| 580
0| 0| 0| 1| 0| 425| 635|  | 2 TON
0| 0| 0| 1| 1| 460| 690
0| 0| 1| 0| 0| 500| 745|
0| 0| 1| 0| 1| 535| 800
0| 0| 1| 1| 0| 575| 855
0| 0| 1| 1| 1| 610| 910|  | 2.5 TON
0| 1| 0| 0| 0| 645| 965|
0| 1| 0| 0| 1| 685| 1020
0| 1| 0| 1| 0| 720| 1075| 3 TON
0| 1| 0| 1| 1| 755| 1130
0| 1| 1| 0| 0| 795| 1185|
0| 1| 1| 0| 1| 830| 1240
0| 1| 1| 1| 0| 870| 1295
0| 1| 1| 1| 1| 905| 1350
“B” CABINET

Switch Settings (0 = OFF, 1 = ON)| ****

CFM

| ****

Nominal A/C & HP Capacity

HEAT| COOL
1- 4| 5| 6| 7| 8| LOW| HIGH
1| 0| 0| 0| 0| 470| 700|  |  | 2 TON|
1| 0| 0| 0| 1| 510| 760
1| 0| 0| 1| 0| 550| 820|  | 2.5 TON
1| 0| 0| 1| 1| 590| 880
1| 0| 1| 0| 0| 630| 940|
1| 0| 1| 0| 1| 670| 1000
1| 0| 1| 1| 0| 710| 1060|  | 3 TON
1| 0| 1| 1| 1| 750| 1120
1| 1| 0| 0| 0| 790| 1180|
1| 1| 0| 0| 1| 830| 1240| 3.5 TON
1| 1| 0| 1| 0| 870| 1300
1| 1| 0| 1| 1| 910| 1360
1| 1| 1| 0| 0| 950| 1420|
1| 1| 1| 0| 1| 990| 1480
1| 1| 1| 1| 0| 1030| 1540
1| 1| 1| 1| 1| 1070| 1600
“C” CABINET

Switch Settings (0 = OFF, 1 = ON)| ****

CFM

| ****

Nominal A/C & HP Capacity

HEAT| COOL
1- 4| 5| 6| 7| 8| LOW| HIGH

| 0| 0| 0| 0| 685| 1025|  |  | 2.5 TON|

| 0| 0| 0| 1| 730| 1090|  | 3 TON

| 0| 0| 1| 0| 775| 1155

| 0| 0| 1| 1| 815| 1220|

| 0| 1| 0| 0| 860| 1285|  | 3.5 TON

| 0| 1| 0| 1| 905| 1350|

| 0| 1| 1| 0| 950| 1415|  | 4 TON

| 0| 1| 1| 1| 990| 1480

| 1| 0| 0| 0| 1035| 1545|

| 1| 0| 0| 1| 1080| 1610

| 1| 0| 1| 0| 1120| 1675| 5 TON

| 1| 0| 1| 1| 1165| 1740

| 1| 1| 0| 0| 1210| 1805

| 1| 1| 0| 1| 1255| 1870|

| 1| 1| 1| 0| 1295| 1935

| 1| 1| 1| 1| 1340| 2000

“D” CABINET

Switch Settings (0 = OFF, 1 = ON)| ****

CFM

| ****

Nominal A/C & HP Capacity

HEAT| COOL
1- 4| 5| 6| 7| 8| LOW| HIGH

| 0| 0| 0| 0| 940| 1400|  | 3.5 TON|

| 0| 0| 0| 1| 965| 1440|  | 4 TON

| 0| 0| 1| 0| 990| 1480

| 0| 0| 1| 1| 1020| 1520

| 0| 1| 0| 0| 1045| 1560|

| 0| 1| 0| 1| 1070| 1600

| 0| 1| 1| 0| 1100| 1640

| 0| 1| 1| 1| 1125| 1680

| 1| 0| 0| 0| 1150| 1720|  | 5 TON

| 1| 0| 0| 1| 1180| 1760

| 1| 0| 1| 0| 1205| 1800

| 1| 0| 1| 1| 1235| 1840|

| 1| 1| 0| 0| 1260| 1880

| 1| 1| 0| 1| 1285| 1920

| 1| 1| 1| 0| 1315| 1960

| 1| 1| 1| 1| 1340| 2000

VENTING

MODELS ARE APPROVED FOR VERTICAL NON DIRECT (1 PIPE) AND DIRECT (2 PIPE) VENTING APPLICATIONS. 3EE 6ENT 4ABLE BELOW FOR SPECIlED 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

| 5PmOW| 90| 90| 90| 90
(ORIZONTAL| 50| 90| 50| 90
$OWNmOW| 30| 90| 30| 90

80,000

| 5PmOW| 40| 90| 40| 90
(ORIZONTAL| 30| 90| 30| 90
$OWNmOW| 30| 90| 30| 90

100,000

| 5PmOW| 30| 90| 30| 90
(ORIZONTAL| 30| 90| 30| 90
$OWNmOW| 30| 90| 25| 90

120,000

| 5PmOW| ./!| 90| ./!| 90
(ORIZONTAL| ./!| 90| ./!| 90
$OWNmOW| ./!| 90| ./!| 90

NOTES:

1. 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.
2. Two 45 degree elbows are equivalent to one 90 degree elbow.
3. This table applies for elevations from sea level to 2,000 ft. For higher elevations, decrease pipe lengths by 8% per 1,000 ft of altitude.

MODEL IDENTIFICATION CODE

SPECIFICATIONS

FG7TC/TL KITS

Description| SKU
2″ #ONCENTRIC VENT KIT| 904952
3″ #ONCENTRIC VENT KIT| 904953
“!” #ABINET DOWNmOW SUB BASE KIT| 902974
“””, “#”, “$” #ABINET DOWNmOW SUB BASE KIT| 904911
2″ 3IDE WALL VENT KIT| 904617
3″ 3IDE WALL VENT KIT| 904347
5.3. ,0 #ONVERSION KIT (0 TO 10,000 FT.)| 904914

ANADA ,0 #ONVERSION KIT (0 TO 4,500 FT.)| 904915

“OTTOM RETURN lLTER 20 PER BOX, “!” CABINET| 903088
“OTTOM RETURN lLTER 20 PER BOX, “”” CABINET| 904916
“OTTOM RETURN lLTER 20 PER BOX, “#” CABINET| 904917
“OTTOM RETURN lLTER 20 PER BOX, “$” CABINET| 904918
3IDE RETURN lLTER KIT| 541036
.EUTRALIZER KIT| 902377

*TL 120 is 94.8% AFUE

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

FG7TC/TL KITS

Description| SKU
2″ #ONCENTRIC VENT KIT| 904952
3″ #ONCENTRIC VENT KIT| 904953
“!” #ABINET DOWNmOW SUB BASE KIT| 902974
“””, “#”, “$” #ABINET DOWNmOW SUB BASE KIT| 904911
2″ 3IDE WALL VENT KIT| 904617
3″ 3IDE WALL VENT KIT| 904347
5.3. ,0 #ONVERSION KIT (0 TO 10,000 FT.)| 904914

ANADA ,0 #ONVERSION KIT (0 TO 4,500 FT.)| 904915

“OTTOM RETURN lLTER 20 PER BOX, “!” CABINET| 903088
“OTTOM RETURN lLTER 20 PER BOX, “”” CABINET| 904916
“OTTOM RETURN lLTER 20 PER BOX, “#” CABINET| 904917
“OTTOM RETURN lLTER 20 PER BOX, “$” CABINET| 904918
3IDE RETURN lLTER KIT| 541036
.EUTRALIZER KIT| 902377

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 (06/2015) 218D-0714 (Replaces 218D-0314)
www.nutonehvac.com
Nu Tone@ trademark used under license. © Nortek Global HVAC, LLC. All Rights Reserved.

References

• TCPDF

Read User Manual Online (PDF format)

Download This Manual (PDF format)

Download this manual  >>