BROAN G8SA Series Single Stage Upflow/Horizontal Gas Furnaces Owner’s Manual

BROAN G8SA Series Single Stage Upflow/Horizontal Gas

Technical Specifications
The G8SA series gas furnace is an induced draft furnace with an 80+ AFUE (Annual Fuel Utilization Efficiency). It has an ultra-low NOx (nitrogen oxide) level, making it environmentally friendly. The input heating capacity of the furnace ranges from 55,000 to 100,000 Btuh (British thermal units per hour). It is designed to 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. The furnace is design certified by CSA forapplication in the United States.

Features and Benefits

• Dimensions: The dimensions of the gas furnace vary depending on the model. The dimensions are provided in inches.
• Approved by SCAQMD and SJVAPC: This furnace series is approved and certified by the South Coast Air Quality Management District (SCAQMD) and the San Joaquin Valley Air Pollution Control Districts (SJVAPC) in the state of California. It meets the NOx levels below 14 ng/J when operating on natural gas.

Gas Furnace Components

• Inducer Assembly
• Furnace Control Board
• Primary Air Limit Switch
• Pressure Switch
• Gas Valve Sight Glass (Behind Valve Tee)
• Gas Burner Head
• Igniter / Flame Sensor Assembly Access
• Combustion Air Orifice Plate
• Flame Roll-out Limit Switch (Manual Reset)
• Transformer
• Blower Door Switch
• Air / Fuel Mixing Tube
• Blower Limit Switch
• Blower Assembly

Model Identification Code

The model identification code for the G8SA gas furnace is as follows:

• G: Gas Furnace
• 8: Design Series – Single Stage
• S: Upflow/Horizontal
• A: Cabinet Width – 14.25 inches
• 055: Input Heating Capacity – 55,000 Btuh
• U: Cooling Airflow – 2-3 Tons
• T23A1: Motor Technology – 5 Tap ECM

Specifications

G8SA Model Numbers| Input – Btuh (a)| Heating Capacity – BtuH| AFUE| Motor H.P. – Speed – Type| Motor FLA Rated| Ext. SP – In. W.C.| Temperature Rise Range – F| Shipping Weights| NOx
---|---|---|---|---|---|---|---|---|---
-055U-T23A1| 55,000| 44,000| 80.0| 1/2 – 5 – ECM| 6| 8.4| 35-65| 107| 40 Ng/J or less
-070U-T24B1| 70,000| 56,000| 80.0| 3/4 – 5 – ECM| 8.4| 0.5| 35-65| 135| 40 Ng/J or less
-100U-T35C1| 100,000| 80,000| 80.0| 3/4 – 5 – ECM| 8.4| 0.5| 35-65| 144| 40 Ng/J or less

TECHNICAL SPECIFICATIONS

G8SA Series
Single Stage Upflow/Horizontal
Gas Furnaces
Induced Draft – 80+ AFUE, Ultra-Low NOx
Input 55,000 – 100,000 Btuh
The 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.
This furnace series is approved and certified by the SCAQMD and the SJVAPC Districts in the state of California with NOx levels below 14 ng/J when operating on natural gas.

FEATURES and BENEFITS

• Ultra-low emissions: 65% less NOx than standard furnaces.
• 00% 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 igniter: Innovative application of a silicon nitride igniter.
• 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.
• 60 second cooling cycle blower-off delay (TDR): increases cooling performance when matched with a Nortek Global HVAC 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 and provide better temperature control, humidity control and air distribution.
• Multi-speed direct drive blower: Energy-efficient, brushless DC (ECM). Designed to give a wide range of cooling capacities. Switches on PCB, provide ultra easy motor speed selection.
• 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 and humidifier. Ergonomically located for ease of service.
• Two piece door design: Enhances furnace appearance and uses captured screws to prevent loosing door screws.
• Blower Compartment: Insulated for ultra quiet operation.
• 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.

GAS FURNACE DIMENSIONS

GAS FURNACE COMPONENTS

MODEL IDENTIFICATION CODE

SPECIFICATIONS

ACCESSORIES

G8SA KITS

Description| SKU
Side return filter kit| 541036

AIRFLOW DATA

HEATING AIRFLOW (CFM) & TEMPERATURE RISE (°F)

MODEL NAME/ HEATING INPUT G8SA| RETURN AIR VIA:| MOTOR SPEED TAP| EXTERNAL STATIC PRESSURE (IN. W.C.)
0.1| 0.2| 0.3| 0.4| 0.5
CFM| RISE| CFM| RISE| CFM| RISE| CFM| RISE| CFM| RISE
-055U-T23A| Bottom| 5 – High | | | | | | | | | |
4 – Med-High| | | | | | | | | |
3 – Med-Low | 880| 46| 845| 48| 810| 50| 770| 53| 735| 55
2 – Alternate| 705| 58| 650| 63| 610| | 570| | 530|
1 – Low **| 640| 64| 600| | 555| | 510| | 470|
Side| 5 – High | | | | | | | | | |
4 – Med-High| | | | | | | | | |
3 – Med-Low | 875| 47| 830| 49| 795| 51| 750| 54| 715| 57
2 – Alternate| 685| 59| 650| 63| 595| | 555| | 515|
1 – Low *| 640| 64| 585| | 540| | 500| | 460|
COOLING AIRFLOW (CFM)**

MODEL NAME/ HEATING INPUT G8SA| RETURN AIR VIA:| MOTOR SPEED TAP| EXTERNAL STATIC PRESSURE (IN. W.C.)
0.1| 0.2| 0.3| 0.4| 0.5| 0.6| 0.7| 0.8
CFM| CFM| CFM| CFM| CFM| CFM| CFM| CFM
055U-T23A| Bottom| 5 – High | 1,180| 1,140| 1,110| 1,080| 1,045| 1,015| 985| 955
4 – Med-High| 920| 880| 850| 810| 775| 740| 700| 665
3 – Med-Low | 880| 845| 810| 770| 735| 700| 665| 630
2 – Alternate| 705| 650| 610| 570| 530| 480| 440| 400
1 – Low **| 640| 600| 555| 510| 470| 430| 390| 340
Side| 5 – High | 1,160| 1,125| 1,095| 1,065| 1,040| 1,010| 975| 945
4 – Med-High| 905| 860| 827| 790| 755| 717| 683| 639
3 – Med-Low | 875| 830| 793| 752| 715| 684| 642| 606
2 – Alternate| 685| 650| 595| 555| 515| 471| 424| 376
1 – Low ***| 640| 585| 540| 500| 460| 415| |

NOTES

1. To comply with government mandated efficiency standards, two openings are required for airflows above 1,600 CFM.
2. Data is shown without filter.
3. Temperature rises in the table are approximate. Actual temperature rises may vary.
4. Individual cells shaded in gray indicate a temperature rise outside of the recommended range.
5. To comply with government mandated efficiency standards, speed settings shaded in gray are not allowed in HEAT mode.
6. The denotes the factory COOL setting, denotes the factory HEAT setting, and denotes factory FAN setting. If the Alternate speed is to be used, the speed tap must be adjusted at the blower motor plug.

AIRFLOW DATA

HEATING AIRFLOW (CFM) & TEMPERATURE RISE (°F)

MODEL NAME/ HEATING INPUT| RETURN AIR VIA:| MOTOR SPEED TAP| EXTERNAL STATIC PRESSURE (IN. W.C.)
0.1| 0.2| 0.3| 0.4| 0.5
CFM| RISE| CFM| RISE| CFM| RISE| CFM| RISE| CFM| RISE
070U-T24B| Bottom| 5 – High | | | | | | | | | |
4 – Med-High| | | | | | | | | |
3 – Med-Low | | | | | | | | | |
2 – Alternate| 1,130| 46| 1,070| 48| 1,010| 51| 960| 54| 890| 58
1 – Low **| 820| 63| 730| | 630| | 570| | 540|
Side| 5 – High | | | | | | | | | |
4 – Med-High| | | | | | | | | |
3 – Med-Low | | | | | | | | | |
2 – Alternate| 1,090| 48| 1,020| 51| 970| 53| 920| 56| 860| 60
1 – Low *| 740| | 680| | 620| | 560| | 510|
COOLING AIRFLOW (CFM)**

MODEL NAME/ HEATING INPUT| RETURN AIR VIA:| MOTOR SPEED TAP| EXTERNAL STATIC PRESSURE (IN. W.C.)
0.1| 0.2| 0.3| 0.4| 0.5| 0.6| 0.7| 0.8
CFM| CFM| CFM| CFM| CFM| CFM| CFM| CFM
070U-T24B| Bottom| 5 – High | 1,790| 1,740| 1,690| 1,640| 1,590| 1,540| 1,490| 1,440
4 – Med-High| 1,650| 1,590| 1,560| 1,500| 1,450| 1,400| 1,350| 1,290
3 – Med-Low | 1,395| 1,340| 1,290| 1,235| 1,190| 1,130| 1,070| 1,010
2 – Alternate| 1,130| 1,070| 1,010| 960| 890| 820| 770| 720
1 – Low **| 820| 730| 630| 570| 540| 490| 430| 380
Side| 5 – High | 1,740| 1,700| 1,660| 1,610| 1,550| 1,510| 1,460| 1,400
4 – Med-High| 1,610| 1,550| 1,510| 1,460| 1,410| 1,360| 1,310| 1,250
3 – Med-Low | 1,350| 1,295| 1,245| 1,185| 1,140| 1,085| 1,035| 985
2 – Alternate| 1,090| 1,020| 970| 920| 860| 800| 750| 700
1 – Low ***| 740| 680| 620| 560| 510| 450| 410| 360

NOTES

1. To comply with government mandated efficiency standards, two openings are required for airflows above 1,600 CFM.
2. Data is shown without filter.
3. Temperature rises in the table are approximate. Actual temperature rises may vary.
4. Individual cells shaded in gray indicate a temperature rise outside of the recommended range.
5. To comply with government mandated efficiency standards, speed settings shaded in gray are not allowed in HEAT mode.
6. The  denotes the factory COOL setting,  denotes the factory HEAT setting, and ” denotes factory FAN setting. If the Alternate speed is to be used, the speed tap must be adjusted at the blower motor plug.

AIRFLOW DATA

HEATING AIRFLOW (CFM) & TEMPERATURE RISE (°F)

MODEL NAME/ HEATING INPUT G8SA| RETURN AIR VIA:| MOTOR SPEED TAP| EXTERNAL STATIC PRESSURE (IN. W.C.)
0.1| 0.2| 0.3| 0.4| 0.5
CFM| RISE| CFM| RISE| CFM| RISE| CFM| RISE| CFM| RISE
-100U-T35C*| ****

Bottom

| 5 – High | | | | | | | | | |
4 – Med-High| | | | | | | | | |
3 – Med-Low | 880| 46| 845| 48| 810| 50| 770| 53| 735| 55
2 – Alternate| 705| 58| 650| 63| 610| | 570| | 530|
1 – Low | 640| 64| 600| | 555| | 510| | 470|
Side| 5 – High | | | | | | | | | |
4 – Med-High| | | | | | | | | |
3 – Med-Low | 875| 47| 830| 49| 795| 51| 750| 54| 715| 57
2 – Alternate| 685| 59| 650| 63| 595| | 555| | 515|
1 – Low | 640| 64| 585| | 540| | 500| | 460|
Side + Bottom or

2 Sides

| 5 – High | | | | | | | | | |
4 – Med-High| | | | | | | | | |
3 – Med-Low | 1,600| 46| 1,530| 48| 1,460| 51| 1,400| 53| 1,340| 55
2 – Alternate| 1,525| 49| 1,455| 51| 1,390| 53| 1,330| 56| 1,265| 59
1 – Low | 1,370| 54| 1,300| 57| 1,230| 60| 1,150| 64| 1,090|
COOLING AIRFLOW (CFM)

MODEL NAME/ HEATING INPUT G8SA| RETURN AIR VIA:| MOTOR SPEED TAP| EXTERNAL STATIC PRESSURE (IN. W.C.)
0.1| 0.2| 0.3| 0.4| 0.5| 0.6| 0.7| 0.8
CFM| CFM| CFM| CFM| CFM| CFM| CFM| CFM
-100U-T35C| Bottom| 5 – High | 2,310| 2,260| 2,200| 2,150| 2,100| 2,040| 1,990| 1,940
4 – Med-High| 1,870| 1,820| 1,760| 1,720| 1,670| 1,610| 1,560| 1,490
3 – Med-Low | 1,580| 1,530| 1,480| 1,420| 1,360| 1,290| 1,230| 1,155
2 – Alternate| 1,500| 1,450| 1,400| 1,340| 1,280| 1,210| 1,130| 1,050
1 – Low **| 1,390| 1,320| 1,260| 1,200| 1,130| 1,060| 970| 890
Side| 5 – High | 2,160| 2,100| 2,060| 2,020| 2,050| 1,990| 1,950| 1,880
4 – Med-High| 1,810| 1,750| 1,710| 1,660| 1,620| 1,560| 1,510| 1,440
3 – Med-Low | 1,540| 1,490| 1,440| 1,380| 1,330| 1,270| 1,210| 1,150
2 – Alternate| 1,470| 1,420| 1,360| 1,310| 1,260| 1,200| 1,130| 1,070
1 – Low | 1,310| 1,250| 1,190| 1,150| 1,080| 1,000| 950| 880
Side + Bottom or 2 sides| 5 – High | 2,280| 2,220| 2,170| 2,120| 2,090| 2,080| 2,020| 1,950
4 – Med-High| 1,880| 1,820| 1,770| 1,720| 1,670| 1,610| 1,560| 1,490
3 – Med-Low | 1,600| 1,530| 1,460| 1,400| 1,340| 1,270| 1,200| 1,120
2 – Alternate| 1,525| 1,455| 1,390| 1,330| 1,265| 1,190| 1,120| 1,045
1 – Low ***| 1,370| 1,300| 1,230| 1,150| 1,090| 1,000| 920| 860

NOTES

1. To comply with government mandated efficiency standards, two openings are required for airflows above 1,600 CFM.
2. Data is shown without filter.
3. Temperature rises in the table are approximate. Actual temperature rises may vary.
4. Individual cells shaded in gray indicate a temperature rise outside of the recommended range.
5. To comply with government mandated efficiency standards, speed settings shaded in gray are not allowed in HEAT mode.
6. The * denotes the factory COOL setting,  denotes the factory HEAT setting, and denotes factory FAN setting. If the Alternate speed is to be used, the speed tap must be adjusted at the blower motor plug.

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 (11/2019)
512F-1119 (Replaces 512F-1019)

References

• TCPDF

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