Unbranded G7S Series High Efficiency Single Stage Condensing Owner’s Manual
- June 15, 2024
- UNBRANDED
Table of Contents
G7S Series High Efficiency Single Stage Condensing
TECHNICAL SPECIFICATIONS
G7S (D and M Series)
High Efficiency, Single Stage
Condensing, Upflow/Horizontal and
Downflow Gas Furnace Models
95.0 AFUE
38,000 – 120,000 Btuh Input
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.
This furnace series is approved and certified by the SCAQM and the SJVAPC
Districts in the state of California under each Districts’ Mitigation Fee Plan
for shipment into and sales in both districts.
For California installations in SCAQMD only: This furnace does not meet the
SCAQMD Rule 1111 NOx emission limit (14 ng/J), and thus is subject to a
mitigation fee of up to $450. This furnace is not eligible for the Clean Air
Furnace Rebate Program:
www.CleanAirFurnaceRebate.com.
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.
- 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 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.
- 60 second fixed cooling cycle blower-off delay (TDR) increases cooling performance when matched with a Nortek Global HVAC coil.
- 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 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.
- 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.
- PolyPro by DuraVent: These furnaces have been tested with and are approved to be installed with DuraVent’s PolyPro venting system.
GAS FURNACE COMPONENTS
UPFLOW / HORIZONTAL FURNACE (*SD SERIES)
*SD Series -Upflow /
Horizontal Furnace
*DOWNFLOW FURNACE (SM SERIES)**
DIMENSIONS
*SD Series -Upflow / Horizontal Furnace
BLOWER PERFORMANCE – G7SD
BLOWER PERFORMANCE – G7SM
NOTES:
-
Factory Set Cooling Speed
** Factory Set Heating Speed- Two openings are recommended for airflows above 1,600 CFM if filter(s) is(are) adjacent to furnace
- Temperature rises in the table are approximate. Actual temperature rises may vary.
- Temperature rises shaded in gray 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 Vent Table below for specified sizes and allowable lengths.
VENT TABLE
| SINGLE PIPE LENGTH (FT.)
with 1 long radius elbow| DIRECT VENT,
DUEL PIPE LENGTH (ft.) WITH
1 long radius elbow on each pipe
---|---|---
OUTLET| OUTLET| INLET/OUTLET| INLET/OUTLET
MODELS| 2”| 3”| 2”| 3”
SD038| 50| 70| 50| 70
SD054| 70| 90| 70| 90
SD072| 50| 90| 50| 90
SD090| 60| 90| 60| 90
SD108| N/A| 90| N/A| 90
SM054| 70| 90| 70| 90
---|---|---|---|---
SM072| 50| 90| 50| 90
* NOTE:
- Subtract 2.5 ft. for each additional 2″ elbow and 3.5 ft. for each additional 3″ elbow.
- Two 45 degree elbows are equivalent to one 90 degree elbow.
- One short radius elbow is equivalent to two long radius elbows.
- Do not include termination elbows in calculation of vent length.
- This table is applicable for elevations from sea level to 2000 ft. For higher elevations decrease vent pipe lengths by 8% per 1000 ft. of altitude.
- Only the listed pipe materials are approved for use with FG7 Condensing Furnaces.
SPECIFICATIONS
G7SD MODEL NUMBERS:| -038D-T24B1| -054D-T24B1| -072D-
T35C1| -090D-T35C1| -108D-T45D1
---|---|---|---|---|---
Input – Btuh (a)| 38,000| 54,000| 72,000| 85,000| 108,000
Heating Capacity – Btuh| 36,000| 51,000| 68,000| 81,000| 103,000
AFUE| 95| 95| 95| 95| 95
Blower D x W| 10 x 8| 11 x 8| 10 x 10| 11 x 10| 11 x 10
Motor H.P. – Speed – Type| 3/4 – 5 – ECM| 3/4 – 5 – ECM| 3/4 – 5 – ECM| 1 – 5
– ECM| 1 – 5 – ECM
Motor FLA| 8.8| 8.8| 8.8| 11.5| 11.5
Rated Ext. SP – In. W.C.| 0.5| 0.5| 0.5| 0.5| 0.5
Temperature Rise Range – ºF| 25-55| 30-60| 35-65| 35-65| 35-65
Shipping Weights| 100lbs| 120lbs| 130lbs| 135lbs| 155lbs
G7SM MODEL NUMBERS:| -054D-T24B1| -072D-T35C1
---|---|---
Input – Btuh (a)| 54,000| 72,000
Heating Capacity – Btuh| 51,000| 68,000
AFUE| 95| 95
Blower D x W| 11 x 8| 11 x 10
Motor H.P. – Speed – Type| 3/4 – 5 – ECM| 1 – 5 – ECM
Motor FLA| 8.8| 11.5
Rated Ext. SP – In. W.C.| 0.5| 0.5
Temperature Rise Range – ºF| 25-55| 35-65
Shipping Weights| 120lbs| 125lbs
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
G7S (D, M) KITS
Description| SKU
2″ Concentric vent kit, Canadian and US approved| 904952
3″ Concentric vent kit, Canadian and US approved| 904953
“B”, “C”, “D” Cabinet downflow sub base kit| 904911
2″ Side wall vent kit| 904617
3″ Side wall vent kit| 904347
U.S. LP Conversion kit (0 to 10,000 ft.)| 905028
Canada LP Conversion kit (0 to 4,500 ft.)| 905029
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
Neutralizer kit| 902377
“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
Furnace Twinning Kit| 1010035
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 (04/2020)
593F-0420
References
Read User Manual Online (PDF format)
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