UNBRANDED KG7SD High Efficiency Single Stage Condensing Upflow Horizontal Gas Furnace Models User Manual

TECHNICAL
SPECIFICATIONS
KG7SD with ECM
High Efficiency, Single Stage
Condensing, Upflow/Horizontal
Gas Furnace Models
Up to 95% AFUE 38,000 – 120,000 Btuh Input

KG7SD High Efficiency Single Stage Condensing Upflow Horizontal Gas

Furnace Models

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.
• 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 ECM blowers.
• 16 speeds for heating and cooling enables flexible airflow.
• 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 (TDR) increases cooling performance when matched with a Nortek Global HVAC 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 airleakage 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.

GAS FURNACE COMPONENTS

DIMENSIONS

KG7SD Upflow / Horizontal Furnaces

054D-23EB1
072D-35EC1| 21| 19 3/8| 19 5/8
090D-35EC1
108D-35ED1| 24 1/2| 22 7/8| 23 1/8
120D-35ED1

NOTE: Dimensions shown in inches.

KG7SD Series -Upflow / Horizontal Furnace

BLOWER PERFORMANCE – KG7SD

KG7SD FURNACES WITH FIXED SPEED HIGH EFFECIENCY BLOWERS

1. Motor Switch Settings are for heating speeds using HEAT switches 1,2,3, & 4 and cooling speeds using COOL switches 5, 6, 7, & 8
2. Two openings are required for airflows above 1,600 CFM if the filter(s) is (are) adjacent to the furnace
3. Data is shown without filter
4. Temperature rises in the table are approximate. Actual temperature rises may vary
5. Cells shaded in gray indicate a temperature rise outside of the recommended range.
6. When in low stage,the circulating airflow is 70% of the tables high value (2-stage furnaces only).

KG7SD FURNACES WITH FIXED SPEED HIGH EFFECIENCY BLOWERS

1. Motor Switch Settings are for heating speeds using HEAT switches 1,2,3, & 4 and cooling speeds using COOL switches 5, 6, 7, & 8
2. Two openings are required for airflows above 1,600 CFM if the filter(s) is (are) adjacent to the furnace
3. Data is shown without filter
4. Temperature rises in the table are approximate. Actual temperature rises may vary
5. Cells shaded in gray indicate a temperature rise outside of the recommended range.
6. When in low stage, the circulating airflow is 70% of the tables high value (2—stage furnaces only).

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”
KG7SD 038| 50| 70| 50| 70
KG7SD 054| 70| 90| 70| 90
KG7SD 072| 50| 90| 50| 90
KG7SD 090| 60| 90| 60| 90
KG7SD 108| N/A| 90| N/A| 90
KG7SD 120| N/A| 90| N/A| 90

• NOTE:

  1. Subtract 2.5 ft. for each additional 2″ elbow and 3.5 ft. for each additional 3″ elbow.
  2.  Two 45 degree elbows are equivalent to one 90 degree elbow.
  3. One short radius elbow is equivalent to two long radius elbows.
  4. Do not include termination elbows in calculation of vent length.
  5. 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.
  6. Only the listed pipe materials are approved for use with KG7 condensing furnaces.

SPECIFICATIONS

KG7SD MODEL NUMBERS:| 038D-23EB1| 054D-23EB1| 072D-35EC1| 090D-35EC1| 108D-35ED1| 120D-35ED1
---|---|---|---|---|---|---
Input – Btuh (a)| 38,000| 54,000| 72,000| 90,000| 108,000| 120,000
Heating Capacity – Btuh| 36100| 51300| 68400| 85,500| 102,600| 113,760
AFUE| 95| 95| 95| 95| 95| 94.3
Motor FLA| 6.4| 6 2/5| 8 4/5| 8.8| 11.5| 11.5
Rated Ext. SP – In. W.C.| 0.5|  1/2|  1/2| 0.5| 0.5| 0.5
Temperature Rise Range – ºF| 30-60| 30-60| 35-65| 35-65| 45-65| 50-70
Shipping Weights| 117lbs| 117lbs| 134lbs| 140lbs| 157lbs| 157lbs
Net Weight| 107lbs| 107lbs| 126lbs| 132lbs| 145lbs| 145lbs

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

KG7SD KITS

Description| SKU
2″ Concentric Vent Kit (US)| 904177
3″ Concentric Vent Kit (US)| 904176
2″ Concentric Vent Kit (Canada)| 904952
3″ Concentric Vent Kit (Canada)| 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
Side Return Filter Kit| 541036
Neutralizer 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 (02/2017) 483E-0217 (Replaces 483E-0916)

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