NuTone FG7T Gas Furnace Owner’s Manual

: June 15, 2024
: NuTone

NuTone FG7T Gas Furnace

NuTone FG7T Gas Furnace

IMPORTANT INFORMATION

Two Stage, Variable Speed, High Efficiency Up flow/Horizontal and Downflow Gas Furnaces

Induced Draft – 80 + AFUE
Input 60,000 – 140,000 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 Canada and the United States.

WARRANTY

10 Year all-parts warranty.
10 Year Quality Pledge to replace the unit if the heat exchanger fails within the first 10 years 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

ISEER: Energy efficient brush less 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.
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.
Two Stage Inducer: Optimizes efficiency on first stage heat and reduces sound levels.
Hot surface igniter: Innovative application of a silicon nitride igniter. Utilizes proven Smart Tee® 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.
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.
Integrated control board: Incorporates connections for electronic air cleaner, humidifier and twinning.
Two piece door design: Enhances furnace appearance and uses captured screws to prevent loosing door screws.
Blower Compartment: Insulated for ultra quiet operation.

GAS FURNACE COMPONENTS

Blower Assembly
Blower Door Switch
Burner Assembly
Flame Roll-Out Switch
Flame Sensor
Furnace Control Board
Gas Manifold
Gas Valve
Igniter
Inducer Assembly
Main Air Limit Switch
Motor Choke (3/4 and 1 HP only)
Motor Control Board
Motor Control Box
Pressure Switch(s)
Transformer

Up flow/Horizontal Gas Furnace

Blower Assembly
Blower Door Switch
Burner Assembly
Combustion Tube
Flame Roll-Out Switch
Flame Sensor
Furnace Control Board
Gas Manifold
Gas Valve
Igniter
Inducer Assembly
Main Air Limit Switch
Motor Choke (3/4 and 1 HP only)
Motor Control Board
Pressure Switch(s)
Transformer

Downflow Gas Furnace

DIMENSIONS

Dimensions

*** TA Model # ‘ s| D i me nsi on “ A “| D i me nsi o n “ B “| D i men si on “ C “**|

D i me nsi on “ D “

---|---|---|---|---
060-VA1| 14 ¼| 10¾| 12 %| 12 f’s
080 -VB1| 17 ½| 11 ¾| 15 f’s| 16 1/s
1 00 -VC 1| 21| 14| 19 3 /s| 19%
120 -VC 1
1 40-VD1| 24½| 15 ¼| 22%| 23 1/s

FG7TA 80+ High Efficiency Up flow/Horizontal Series

Dimensions

*** TK Model # ‘ s| D i me nsi o n “ A “| D i me nsi on “ B “| D i me nsi on “ C “| D i men si on “ D “**
---|---|---|---|---
060-VA1| 14 ¼| 10¾| 12 %| 12 f’s
080 -VB1| 17 ½| 11 ¾| 15 f’s| 16 1/s
100 -VC1| 21| 14| 19¾| 19%
120-VC1

BLOWER PERFORMANCE – FG7TA/TK

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

A Cabinet	*TA/TK-060( )-VA1 Models
Switch Settings HEAT	Input (BTU) 60000
NB 2 3 4	CFM
0	0
0	0
0	0
0	0
0	1
0	1
0	1
0	1
B Cabinet	*TA/TK-080( )-VB1 Models
---	---
Switch Settings HEAT	Input (BTU) 80000
NB 2 3 4	CFM
1	0
1	0
1	0
1	0
1	1
1	1
1	1
1	1
C Cabinet	*TA/TK-100( )-VC1 Models

Models
---|---|---
Switch Settings HEAT| Input (BTU) 100000| Input (BTU) 120000
NB 2 3 4| CFM| Temp Rise (°F)| CFM| Temp Rise (°F)

| 0| 0| 0| 1000| 74| 1000| 89

| 0| 0| 1| 1115| 66| 1115| 80

| 0| 1| 0| 1230| 60| 1230| 72

| 0| 1| 1| 1345| 55| 1345| 66

| 1| 0| 0| 1460| 51| 1460| 61

| 1| 0| 1| 1575| 47| 1575| 56

| 1| 1| 0| 1690| 44| 1690| 53

| 1| 1| 1| 1805| 41| 1805| 49

D Cabinet	*TA-140( )-VD1 Model
Switch Settings HEAT	Input (BTU) 140000
NB 2 3 4	CFM
#	0
#	0
#	0
#	0
#	1
#	1
#	1
#	1

Switch not used – can be 0 or 1

Notes:

Two openings are recommended for airflows above 1600 CFM if the filter(s) is (are) adjacent to the furnace.
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.

COOLING AIRFLOWS

Table

switch not used – can be 0 or 1

Table

MODEL IDENTIFICATION CODE

SPECIFICATIONS

FG7TA/TK MODEL NUMBERS| 060C-VA1| 080C-VB1| 100C-VC1| 120C-VC1| 140C-VD1
---|---|---|---|---|---
Input – Btuh (a)| 60,000 I 39,000| 80,000 I 52,000| 100,000 / 65,000| 120,000 I 78,000| 140,000 I 91,000
Heating Capacity – Btuh| 48,000 I 31,200| 64,000 I 41,600| 80,000 I 52,000| 96,000 I 62,400| 112,000 / 72,800
AFUE| 80.0| 80.0| 80.0| 80.0| 80.0
Blower D xW| 10 X 6| 11 X 8| 11 X 10| 11 X 10| 11 X 10
Motor H.P. – Speed – Type| 1/2 – Variable| 1/2 – Variable| 3/4 – Variable| 3/4 – Variable| 1 – Variable
Motor FLA| 6.2| 6.2| 8.7| 8.7| 11.7
Rated Ext. SP – In. W.C.| 0.5| 0.5| 0.5| 0.5| 0.5
Temperature Rise Range – QF| 25-55| 30-60| 35-65| 35-65| 40-70
Shipping Weights| 115Ibs| 110lbs| 125Ibs| 135Ibs| 155Ibs

All models are 115 V, 60 HZ. Gas connections are 1/2″ N.P.T.
AFUE= Annual Fuel Utilization Efficiency

ACCESSORIES

FG7TA/TK KITS

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.

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