GM9C80 / GC9C80 Two-Stage, 9-Speed ECM Gas Furnace 80% AFUE Heating Input: 40,000–120,000 BTU/h Contents Nomenclature......................................... 2 Product Specifications............................ 3 Dimensions............................................. 5 Airflow Data............................................ 7 Wiring Diagram .................................... 26 Accessories...........................................
Nomenclature G M 9 C 80 040 4 C * ** 1 2 3 4 5,6 7,8,9 10 11 12 13,14 Brand Engineering G - Goodman® Brand Major/Minor Revisions A - Initial Release B - 1st Revision Configuration NOx M - Upflow/Horizontal N = > 40 NG/J NOx C - Downflow/Horizontal X = < 40 NG/J NOx Motor Cabinet Width 9 - Nine Speed ECM Gas Valve A - 14" C - 21" B - 17½" D - 24½" Maximum CFM C - 2 Stage 3 - 1200 CFM 4 - 1600 CFM 5 - 2000 CFM AFUE 2 MBTU/h 80 - 80% AFUE 92 - 92% AFUE 030 - 30,0
Specifications GM9C80 0403AN GM9C80 0603A* GM9C80 0603B* GM9C80 0803B* GM9C80 0804B* GM9C80 0804C* GM9C80 0805C* GM9C80 0805DX GM9C80 1004CN GM9C80 1005C* GM9C80 1205DN 40,000 60,000 60,000 80,000 80,000 80,000 80,000 80,000 100,000 100,000 120,000 Natural Gas 32,000 48,000 48,000 64,000 64,000 64,000 64,000 64,000 80,000 80,000 96,000 LP Gas 32,000 48,000 48,000 64,000 64,000 64,000 64,000 64,000 80,000 80,000 96,000 28,000 42,000 42,000 56,000 56,000 56,
Specifications GC9C80 0403AX GC9C80 0603AX GC9C80 0603BX GC9C80 0804BX GC9C80 0805CX GC9C80 1005CX 40,000 60,000 60,000 80,000 80,000 100,000 Natural Gas 32,000 48,000 48,000 64,000 64,000 80,000 LP Gas 32,000 48,000 48,000 64,000 64,000 80,000 28,000 42,000 42,000 56,000 56,000 70,000 Natural Gas 22,400 33,600 33,600 44,800 44,800 56,000 LP Gas 22,400 33,600 33,600 44,800 44,800 56,000 80 80 80 80 80 80 Heating Capacity High Fire Input (BTU/h)¹ High Fire
GM9C80 Dimensions Alt. Flue Outlet — Horizontal Left 1¾” 17⁄16” A B 19½” ➤ Alternate Gas Inlet ➤ ➤ 33⅜” Alt. Gas Inlet ➤ 27⅞” 20” High-Voltage Inlet 235⁄16” Alt. High Voltage 15” 13¼” Low-Voltage Inlet Alt.
GC9C80 Dimensions A 28” 19⅝” B High-Voltage Electrical Low-Voltage Electrical 33⅜” Gas Inlet 18⅜” 11⅜” Model Dimensions W H 14” 12½” GC9C800603AX 14” 12½” GC9C800603BX 17½” 16” GC9C800804BX 17½” 16” GC9C800805CX 21” 19½” GC9C801005CX 21” 19½” GC9C800403AX Minimum Clearances to Combustible Materials Sides Rear Front Bottom 1 0 3 C Vent SW B 6 1 Top 1 C = If placed on combustible floor, the floor MUST be wood ONLY.
GM9C80 Low Stage Cooling Airflow Data LOW STAGE COOLING AIFLOW MODEL GM9C80 0403A* GM9C80 0603A* GM9C80 0603B* GM9C80 0803B* GM9C80 0804B* THERMOSTAT CALL Y/Y1 Y/Y1 Y/Y1 Y/Y1 Y/Y1 EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GM9C80 Low Stage Cooling Airflow Data (Cont.) LOW STAGE COOLING AIFLOW MODEL GM9C80 0804C* GM9C80 0805C* GM9C80 0805D* GM9C80 1004C* GM9C80 1005C* THERMOSTAT CALL Y/Y1 Y/Y1 Y/Y1 Y/Y1 Y/Y1 EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GM9C80 Low Stage Cooling Airflow Data (Cont.) LOW STAGE COOLING AIFLOW MODEL GM9C80 1205D* THERMOSTAT CALL Y/Y1 EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GM9C80 High Stage Cooling Airflow Data HIGH STAGE COOLING AIFLOW MODEL GM9C80 0403A* GM9C80 0603A* GM9C80 0603B* GM9C80 0803B* GM9C80 0804B* THERMOSTAT CALL Y2 Y2 Y2 Y2 Y2 EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GM9C80 High Stage Cooling Airflow Data (Cont.) HIGH STAGE COOLING AIFLOW MODEL GM9C80 0804C* GM9C80 0805C* GM9C80 0805D* GM9C80 1004C* GM9C80 1005C* THERMOSTAT CALL Y2 Y2 Y2 Y2 Y2 EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GM9C80 High Stage Cooling Airflow Data (Cont.) HIGH STAGE COOLING AIFLOW MODEL THERMOSTAT CALL GM9C80 1205D* Y2 EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GM9C80 Circulation Airflow Data CIRCULATION AIFLOW MODEL GM9C80 0403A* GM9C80 0603A* GM9C80 0603B* GM9C80 0803B* GM9C80 0804B* THERMOSTAT CALL G G G G G EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GM9C80 Circulation Airflow Data (Cont.) CIRCULATION AIFLOW MODEL GM9C80 0804C* GM9C80 0805C* GM9C80 0805D* GM9C80 1004C* GM9C80 1005C* THERMOSTAT CALL G G G G G EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GM9C80 Circulation Airflow Data (Cont.) CIRCULATION AIFLOW MODEL THERMOSTAT CALL GM9C80 1205D* G EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GM9C80 Heating Airflow Data HEATING AIFLOW MODEL EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) THERMOSTAT CALL TAP # F01^ 749 28 W/W1 F03^^ 584 N/A F04 882 24 F02^ 1130 F04 GM9C80 0403A* W2 W/W1 GM9C80 0603A* W2 W/W1 GM9C80 0603B* W2 W/W1 GM9C80 0803B* W2 W/W1 GM9C80 0804B* W2 W/W1 GM9C80 0804C* W2 0.1 CFM 0.2 RISE CFM 0.3 0.4 RISE CFM 0.5 RISE CFM 0.6 0.7 0.
GM9C80 Heating Airflow Data (Cont.) HEATING AIFLOW MODEL EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) THERMOSTAT CALL TAP # F01^ W/W1 F03^^ GM9C80 0805C* W2 W/W1 GM9C80 0805D* W2 W/W1 GM9C80 1004C* W2 W/W1 GM9C80 1005C* W2 W/W1 GM9C80 1205D* W2 0.1 CFM 0.2 RISE CFM 1420 29 826 N/A F04^^ 1623 F02^ F04 0.3 RISE CFM 1359 31 744 N/A N/A 1567 1825 32 1623 37 F05 1697 F01^ 1175 F03^^ 972 F04 1401 F02^ F04 0.
GC9C80 Low Stage Cooling Airflow Data LOW STAGE COOLING AIFLOW MODEL GC9C80 0403A* GC9C80 0603A* GC9C80 0603B* GC9C80 0804B* GC9C80 0805C* THERMOSTAT CALL Y/Y1 Y/Y1 Y/Y1 Y/Y1 Y/Y1 EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GC9C80 Low Stage Cooling Airflow Data (Cont.) LOW STAGE COOLING AIFLOW MODEL THERMOSTAT CALL GC9C80 1005C* Y/Y1 EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GC9C80 High Stage Cooling Airflow Data LOW STAGE COOLING AIFLOW MODEL GC9C80 0403A* GC9C80 0603A* GC9C80 0603B* GC9C80 0804B* GC9C80 0805C* THERMOSTAT CALL Y2 Y2 Y2 Y2 Y2 EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GC9C80 High Stage Cooling Airflow Data (Cont.) LOW STAGE COOLING AIFLOW MODEL EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) THERMOSTAT CALL GC9C80 1005C* TAP # Y2 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GC9C80 Circulation Airflow Data CIRCULATION AIFLOW MODEL GC9C80 0403A* GC9C80 0603A* GC9C80 0603B* GC9C80 0804B* GC9C80 0805C* THERMOSTAT CALL G G G G G EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GC9C80 Circulation Airflow Data (Cont.) CIRCULATION AIFLOW MODEL THERMOSTAT CALL GC9C80 1005C* G EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) TAP # 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
GC9C80 Heating Airflow Data HEATING AIFLOW MODEL EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN) THERMOSTAT CALL TAP # F01^ 712 29 663 31 610 34 559 37 514 40 514 395 337 W/W1 F03^^ 619 N/A 568 N/A 510 N/A 459 N/A 404 N/A 325 269 216 F04 825 25 784 26 741 28 694 30 650 32 609 563 520 F02^ 1120 26 1081 27 1053 28 1022 29 990 30 955 918 887 F04 825 36 784 38 741 40 694 43 650 45 609 563 520 GC9C80 0403A* W2 W/W1 GC9C80 0603A* W2 W/W1
SS-GM9C80/GC9C80 www.goodmanmfg.com 10 20 30 40 50 60 70 30 80 90 100 40 50 60 700 600 CFM 90 100 2000 2200 2400 CFM 1800 1600 1400 OUTPUT BTU/HR x 1000 Output BTU/h x 1,000 80 1200 1100 1000 900 70 800 Formulas FORMULAS 110 120 130 CFM x 1.08 140 BTUBTU/h OUTPUT 1.08 x RISE Output== CFM CFM xx1.08 x Rise BTU OUTPUT RISE = = BTU/H Output ÷ CFM Rise 1.08 BTUBTU OUTPUT TEMPERATURE RISEChart CHART OutputvsVs.
Wiring Diagram YL SOME UNITS MAY HAVE 1 ROLL OUT SWITCH PU PK RD 2 1 DISCONNECT JUNCTION BOX GND GND BURNER COMPARTMENT NEUTRAL LINE PK HUM-OUT BK IND HI FS E20 E39 E2 E1 E15 FLAME SENSOR 115 VAC LINE EAC-H LINE-H CIRC-H XFMR-H NEUT1 NEUT2 CIRC-N E8 E7 HUM-N EAC-N XFMR-N E6 LINE-N E5 E3 E4 40 VA TRANSFORMER T4 T5 COM 3 2 1 5 6 4 10 7 YL 12 9 PU 11 8 RIGHT LEFT T3 BR SW3 READ CODES FROM LEFT TO RIGHT PU TWIN OR E24 24V HUM GY GY E21 5 4 3
Accessories Model Description GM9C80 GM9C80 GM9C80 GM9C80 GM9C80 GM9C80 GM9C80 GM9C80 GM9C80 GM9C80 GM9C80 0403A* 0603A* 0603B* 0803B* 0804B* 0804C* 0805C* 0805D* 1004C* 1005C* 1205D* AFE18-60A Fossil Fuel (Dual Fuel) Kit √ √ √ √ √ √ √ √ √ √ √ HA-02 High-Altitude Natural Gas Kit √ √ √ √ √ √ √ √ √ √ √ LPLP03 Low LP Gas Pressure Switch √ √ √ √ √ √ √ √ √ √ √ LPM-06 LP Conversion Kits √ √ √ √ √ √ √ √ √ √ √ Model SS-GM9C80/GC9C80 GC9C80 Description GC9C
Notes Goodman Manufacturing Company, L.P., reserves the right to discontinue, or change at any time, specifications or designs without notice or without incurring obligations. © 2021 • Goodman Manufacturing Company, L.P. • Houston, Texas • Printed in the USA. 28 www.goodmanmfg.
