TECHNICAL SPECIFICATIONS KG7S (C and L Series) High Efficiency / Direct Vent or Non Direct Vent Condensing Upflow/Horizontal and Downflow Gas Furnaces Induced Draft - 92. AFUE Input 38,000-20,000 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. WARRANTY 0-year all-parts warranty. 0 Year Quality Pledge to replace the unit if the heat exchanger fails within the first 0 years of operation, to the original owner. Consumer product registration required for 0 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 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. 30 second blower delay at start-up assures a warm duct temperature at furnace start-up. Adjustable blower off settings (60, 90, 20 and 80 seconds). 30 second post purge increases life of heat exchanger. Hot surface igniter Innovative application of an appliance type igniter with a 20 year history of reliability. 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 (TDR) increases cooling performance when matched with a NORDYNE coil. High efficiency blower kits maximize efficiencies. On select units, a SEER improvement of up to 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. Seated vestibule reduces burner and inducer sound levels.
GAS FURNACE COMPONENTS ITEM COMPONENT NAME. Blower Assembly 2. Blower Door Switch 3. Burner Assembly 4. Control Board 5. Finish Flanges 7 8 5 6 4 3 9 4 2 6. Flame Sensor 7. Gas Manifold 0 3 8. Gas Valve 9. Igniter 0. Inducer Assembly 2 5. Limit Switch 2. Main Air Limit Switch 3. Pressure Switch(s) ( B, C, & D cabinets only) 4. Roll-Out Switch(s) 5. Transformer Upflow/Horizontal Gas Furnace ITEM COMPONENT NAME 5. Blower Assembly 2. Blower Door Switch (behind blower panel) 3. Burner Assembly 4 4. Control Board 5. Finish Flanges 6. Flame Sensor 2 2 5 7. Gas Manifold 8. Gas Valve 9. Igniter 0. Inducer Assembly 3 2 0. Inducer Pressure Switch 2. Limit Switch(s) 3. Pressure Switch 9 8 7 4. Roll-Out Switch(s) 5. Transformer 3 4 6 Downflow Gas Furnace 2
DIMENSIONS 23 /2 C BOTTOM PANEL BOTTOM VIEW FRONT BRACE FLUE 3 TOP VIEW B FLANGES 7 /2 9 INLET AIR *SC Model # s A B C 038D-23A 4 /4 2 5/8 2 7/8 054D-24B 072D-24B 7 /2 5 7/8 6 /8 072D-35C 090D-35C 2 9 3/8 9 5/8 08D-45D 20D-45D 24 /2 22 7/8 23 /8 34 /2 25 3/8 Ø 3 HOLE FOR VENT PIPE 7 /4 2 3/4 7 7/8 THERMOSTAT ELECTRIC Ø 5/8 HOLE FOR GAS THERMOSTAT Ø 3 HOLE FOR VENT PIPE 24 7/8 Ø 7/8 HOLE FOR ELECTRIC Ø 5/8 HOLE FOR GAS 4 KNOCKOUTS (BOTH SIDES) CONDENSATE 28 LEFT SIDE CONDENSATE A 23 RIGHT SIDE KG7SC 90+ High Efficiency Upflow/Horizontal Series C TOP VIEW B 34 /2 8 /2 FRONT BRACE BOTTOM VIEW 22 /4 25 /2 Ø 3 HOLE FOR VENT PIPE 2 3/4 Ø 7/8 HOLE FOR ELECTRIC 5/8 X 3 /2 HOLE FOR GAS 0 /4 7 /4 FLUE 3 FLANGES 7 /2 9 INLET AIR SL Model # s 054D-24B 072D-24B THERMOSTAT ELECTRIC Ø 5/8 HOLE FOR GAS 7 /4 A 22 /4 25 Ø 3 HOLE FOR VENT PIPE 25 3/8 CONDENSATE B 7 7/6 29 /2 C 7 /2 5 7/8 6 /8 090D-35C 2 9 3/8 9 5/8 20D-45D 24 /2 22 7/8 23 /8 28 LEFT SIDE CONDENSATE A RIGHT SIDE KG7SL 90+ High Efficiency Downflow Series 3
MODEL IDENTIFICATION CODE Gas Furnace Design Series KG 7 S C 090 C 23 B Cabinet Width A = 4.25 B = 7.50 C = 2.00 D = 24.50 S = Single Stage T = Two Stage A = 80% Upflow/Horizontal C = 92.% / 95.% Upflow/Horizontal K = 80% Downflow L = 92.% / 95.% Downflow Cooling Airflow 23 = 2-3 Tons 24 = 2-4 Tons 35 = 3-5 Tons 45 = 4-5 Tons Input Heating Capacity 038 = 38,000 054 = 54,000 072 = 72,000 090 = 90,000 08 = 08,000 20 = 20,000 C = Standard N = 80% AFUE Low NOx D = 90+% AFUE Low NOx SPECIFICATIONS KG7SC MODEL NUMBERS: -038D-23A -054D-24B -072D-24B -072D-35C -090D-35C -08D-45D -20D-45D Input - Btuh (a) 38,000 54,000 72,000 72,000 90,000 08,000 20,000 Heating Capacity - Btuh 35,000 49,700 66,000 66,000 82,800 99,000 0,400 AFUE 92. 92. 92. 92. 92. 92. 92. Blower D x W 0 x 6 x 8 x 8 0 x 0 x 0 x 0 x 0 Motor H.P. - Speed - Type /3-4 - PSC /2-4 - PSC /2-4 - PSC /2-4 - PSC.0-4 - PSC.0-4 - PSC.0-4 - PSC Motor FLA 4.80 8.20 8.20 7.50 3.75 3.75 3.75 Rated Ext. SP - In. W.C. 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Temperature Rise Range - ºF 30-60 30-60 35-65 35-65 35-65 40-70 40-70 Shipping Weights 00lbs 20lbs 25lbs 30lbs 35lbs 55lbs 55lbs KG7SL MODEL NUMBERS: -054D-24B -072D-24B -090D-35C -20D-45D Input - Btuh (a) 54,000 72,000 90,000 20,000 Heating Capacity - Btuh 49,700 66,000 82,800 0,400 AFUE 92. 92. 92. 92. Blower D x W x 8 x 8 0 x 0 x 0 Motor H.P. - Speed - Type /2-4 - PSC /2-4 - PSC.0-4 - PSC.0-4 - PSC Motor FLA 8.20 8.20 7.50 3.75 Rated Ext. SP - In. W.C. 0.5 0.5 0.5 0.5 Temperature Rise Range - ºF 30-60 35-65 35-65 40-70 Shipping Weights 20lbs 25lbs 35lbs 55lbs Note: All models are 5V, 60 Hz. Gas Connections are /2" N.P.T. AFUE = Annual Fuel Utilization Efficiency (a) Ratings to 2,000 ft. Over 2,000 ft. reduce 4% for each,000 ft. above sea level. 4
BLOWER PERFORMANCE - KG7SC Model Number Heating External Static Pressure (Inches Water Column) Input Motor 0. 0.2 0.3 0.4 0.5 0.6 0.7 0.8 (Btuh) Speed CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise High* 245 26 200 27 50 28 00 29 050 3 985 33 920 35 865 37 SC038-23A 38,000 Med-High 5 29 075 30 030 3 990 33 935 35 880 37 85 40 740 44 Bottom Med-Low** 785 4 770 42 745 43 720 45 680 48 640 5 595 54 530 6 Return Low 645 50 630 5 60 53 580 56 555 58 525 62 480 67 420 77 High* 330 24 285 25 230 26 75 28 25 29 055 3 985 33 925 35 SC038-23A 38,000 Med-High 95 27 50 28 00 29 060 3 000 32 940 34 875 37 790 4 Side Med-Low** 840 39 825 39 800 40 770 42 730 44 685 47 640 5 560 58 Return Low 680 48 675 48 655 49 620 52 600 54 560 58 55 63 450 72 High* 550 30 520 30 485 3 450 32 40 33 360 34 300 35 255 37 SC054-24B 54,000 Med-High 250 37 220 38 200 38 70 39 40 40 05 42 065 43 00 46 Bottom Med-Low** 935 49 90 5 880 52 850 54 85 56 785 59 735 63 680 68 Return Low 720 64 690 67 655 70 620 74 585 79 550 84 520 88 485 95 High* 630 28 595 29 560 29 525 30 480 3 430 32 365 34 320 35 SC054D-24B 54,000 Med-High 35 35 280 36 260 37 230 37 200 38 60 40 20 4 060 43 Side Med-Low** 980 47 955 48 925 50 890 52 855 54 825 56 775 59 75 64 Return Low 755 6 725 63 690 67 650 7 65 75 580 79 545 84 50 90 High* 590 39 550 40 525 40 475 42 425 43 380 44 325 46 240 49 SC072D-24B 72,000 Med-High** 260 49 240 49 220 50 85 52 60 53 0 55 085 57 030 60 Bottom Med-Low 25 55 0 55 085 57 050 58 025 60 990 62 940 65 865 7 Return Low 895 69 865 7 830 74 795 77 775 79 750 82 693 89 665 92 High* 670 37 630 38 600 38 550 40 495 4 450 42 390 44 300 47 SC072D-24B 72,000 Med-High** 325 46 300 47 280 48 245 49 220 50 65 53 40 54 080 57 Side Med-Low 80 52 65 53 40 54 00 56 075 57 040 59 985 62 90 67 Return Low 940 65 90 67 870 70 935 66 85 75 790 78 730 84 640 96 High* 895 32 790 34 720 36 630 38 550 40 445 42 330 46 225 50 SC072D-35C 72,000 Med-High** 775 35 70 36 650 37 550 40 470 42 385 44 290 48 80 52 Bottom Med-Low 255 49 200 5 55 53 05 56 050 58 000 6 925 66 830 74 Return Low 40 54 00 56 065 58 025 60 980 63 930 66 870 70 805 76 High* 970 3 865 33 780 34 695 36 65 38 505 4 385 44 275 48 SC072D-35C 72,000 Med-High** 845 33 780 34 75 36 65 38 530 40 440 43 340 46 230 50 Side Med-Low 305 47 250 49 200 5 50 53 090 56 040 59 965 64 865 7 Return Low 85 52 45 54 0 55 065 58 020 60 965 64 905 68 840 73 High* 990 3 880 33 805 34 70 36 630 38 50 4 400 44 285 48 SC072D-35C 72,000 Med-High** 865 33 795 34 735 35 630 38 545 40 455 42 355 45 240 49 Side + Bottom Med-Low 320 46 260 49 25 50 60 53 05 56 050 58 970 63 875 70 or 2 Sides Low 200 5 55 53 20 55 075 57 030 60 975 63 95 67 845 73 High* 255 36 2090 37 205 38 960 39 90 40 835 42 755 44 660 46 SC090D-35C 90,000 Med-High** 205 38 960 39 920 40 860 4 805 42 755 44 695 45 65 47 Bottom Med-Low 705 45 675 46 640 47 590 48 555 49 495 5 435 53 340 57 Return Low 40 54 390 55 365 56 330 58 30 59 275 60 235 62 20 63 High* 2240 34 275 35 200 37 2040 38 985 39 90 40 825 42 725 44 SC090D-35C 90,000 Med-High** 2095 37 2040 38 2000 38 935 40 875 4 825 42 765 43 680 46 Side Med-Low 775 43 740 44 705 45 655 46 65 47 555 49 490 5 335 57 Return Low 465 52 445 53 420 54 385 55 360 56 325 58 285 60 260 6 High* 2265 34 295 35 25 36 2060 37 2005 38 930 40 845 42 745 44 SC090D-35C 90,000 Med-High** 25 36 2060 37 205 38 955 39 895 40 845 42 780 43 695 45 Side + Bottom Med-Low 790 43 760 44 725 44 670 46 635 47 570 49 50 5 40 54 or 2 Sides Low 480 52 460 53 435 53 400 55 375 56 340 57 300 59 270 60 High* 235 43 2095 44 2040 45 975 47 90 48 840 50 735 53 675 55 SC08D-45D 08,000 Med-High** 2000 46 955 47 900 48 845 50 800 5 735 53 665 55 570 59 Bottom only Med-Low 665 55 660 55 625 57 590 58 530 60 500 6 45 65 340 69 or 2 openings Low 385 66 360 68 30 70 300 7 275 72 250 74 200 77 50 80 High* 25 43 2075 44 2020 46 955 47 890 49 822 50 720 53 660 55 SC08D-45D 08,000 Med-High** 980 46 935 48 880 49 830 50 780 52 720 53 650 56 555 59 Side Med-Low 650 56 645 56 60 57 575 58 55 6 485 62 400 66 330 69 Return Low 370 67 345 68 300 7 290 7 260 73 240 74 90 77 40 8 High* 235 48 2095 49 2040 50 975 52 90 54 840 56 735 59 675 6 SC20D-45D 20,000 Med-High** 2000 5 955 52 900 54 845 55 800 57 735 59 665 6 570 65 Bottom only Med-Low 665 6 660 62 625 63 590 64 530 67 500 68 45 72 340 76 or 2 openings Low 385 74 360 75 30 78 300 79 275 80 250 82 200 85 50 89 High* 25 48 2075 49 2020 5 955 52 890 54 822 56 720 59 660 62 SC20D-45D 20,000 Med-High** 980 52 935 53 880 54 830 56 780 57 720 59 650 62 555 66 Side Med-Low 650 62 645 62 60 63 575 65 55 67 485 69 400 73 330 77 Return Low 370 75 345 76 300 79 290 79 260 8 240 82 90 86 40 90 * Factory Set Cooling Speed NOTE:. 2 openings are recommended for airflows above 600 CFM if filter(s) is (are) adjacent to furnace. ** Factory Set Heating Speed 2. Temperature rises in the table are approximate. Actual temperature rises may vary. 3. Temperature rises shaded grey are for reference only. These conditions are not recommended. 5
6 Model Number Heating External Static Pressure (Inches Water Column) Input Motor 0. 0.2 0.3 0.4 0.5 0.6 0.7 0.8 (Btuh) Speed CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise HIGH* 580 29 550 30 520 30 485 3 460 32 425 32 375 33 320 35 SL054D-24B 54,000 MED-HIGH 240 37 230 37 20 38 85 39 65 39 35 4 00 42 045 44 MED-LOW** 45 40 20 4 00 42 080 43 055 44 030 45 985 47 940 49 LOW 895 5 870 53 850 54 825 56 800 58 770 60 740 62 75 64 HIGH* 560 39 530 40 500 4 480 4 435 43 400 44 360 45 30 47 SL072D-24B 72,000 MED-HIGH** 245 49 225 50 205 5 80 52 50 53 25 55 090 56 045 59 MED-LOW 085 57 070 57 045 59 025 60 000 6 970 63 930 66 880 70 LOW 850 72 830 74 800 77 780 79 760 8 730 84 70 86 685 90 HIGH* 955 39 905 40 835 42 795 43 730 44 620 47 545 50 450 53 SL090D-35C 90,000 MED-HIGH** 845 42 790 43 750 44 680 46 55 5 540 50 475 52 40 54 MED-LOW 320 58 290 59 250 6 25 63 80 65 20 68 050 73 970 79 LOW 90 64 65 66 25 68 080 7 055 73 000 77 945 8 875 88 HIGH* 225 46 250 48 2075 49 2035 50 970 52 905 54 800 57 745 59 SL20D-45D 20,000 MED-HIGH** 2050 50 205 5 955 52 900 54 860 55 795 57 720 59 620 63 MED-LOW 720 59 690 60 655 62 640 62 60 63 560 66 505 68 465 70 LOW 420 72 40 72 400 73 365 75 350 76 335 77 290 79 260 8 * Factory Set Cooling Speed NOTE:. Temperature rises in the table are approximate. Actual temperature rises may vary. ** Factory Set Heating Speed 2. Temperature rises shaded grey are for reference only. These conditions are not recommended. BLOWER PERFORMANCE - KG7SL
VENTING All models are approved for vertical non direct ( pipe) and direct (2 pipe) venting applications. See Vent Table below for specified sizes and allowable lengths. VENT TABLE SINGLE PIPE LENGTH (FT.) with long radius elbow* DIRECT VENT, DUEL PIPE LENGTH (ft.) WITH long radius elbow on each pipe* OUTLET OUTLET INLET/OUTLET INLET/OUTLET MODELS 2 3 2 3 SC038 50 70 60 80 SC054 90 90 90 90 SC072 90 90 90 90 SC090 90 90 90 90 SC08 N/A 90 N/A 90 SC20 N/A 90 N/A 90 SL054 90 90 90 90 SL072 90 90 90 90 SL090 70 90 70 90 SL20 N/A 90 N/A 90 * NOTE:. 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 000 ft. of altitude. 6. Only the listed pipe materials are approved for use with KG7 Condensing Furnaces. 7
ACCESSORIES KG7S (C, L) KITS Description SKU "A" Cabinet fixed speed, high efficiency, FSHE 904872 "B" Cabinet fixed speed, high efficiency, FSHE 904873 "C" Cabinet fixed speed, high efficiency, FSHE 904874 "D" Cabinet fixed speed, high efficiency, FSHE 904875 "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 2" Concentric vent kit 904952 3" Concentric vent kit 904953 "A" Cabinet downflow sub base kit 902974 "B", "C", "D" Cabinet downflow sub base kit 9049 2" Side wall vent kit 90467 3" Side wall vent kit 904347 U.S. LP Conversion kit (0 to 0,000 ft.) 90494 Canada LP Conversion kit (0 to 4,500 ft.) 90495 Bottom return filter 20 per box, "A" cabinet 903088 Bottom return filter 20 per box, "B" cabinet 90496 Bottom return filter 20 per box, "C" cabinet 90497 Bottom return filter 20 per box, "D" cabinet 90498 Side return filter kit 54036 Neutralizer kit 902377 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 & conditions, see your local installer or contact the NORDYNE warranty department for a copy. 8000 Phoenix Parkway O'Fallon MO 63368-3827 Specifications and illustrations subject to change without notice and without incurring obligations. Printed in U.S.A. (0/2009) 729C-009 (Replaces 729C-0608) www.nordyne.com