Technical Information Model and Manufacturing numbers listed on page 3. 40" 90% Gas Furnaces GUCA***BX** & GCCA***BX** • Refer to Service Manual RS6600001 Rev. 2 for installation, operation, and troubleshooting information. • All safety information must be followed as provided in the Service Manual. • Refer to the appropriate Parts Catalog for part number information. DESI GN CE RTI FI E D CE R T I FI E D Heating&Air Conditioning ® Comfort. Quality. Trust.
PRODUCT IDENTIFICATION The model and manufacturing number are used for positive identification of component parts used in manufacturing. When engineering and manufacturing changes take place where interchangeability of components are affected, the manufacturing number will change. It is very important to use the model and manufacturing numbers at all times when requesting service or parts information. G U C A 045 B X 30 Product Type Airflow Capability G: Gas Furnace 30: 1.5 to 3.0 Tons 40: 2.5 to 4.
PRODUCT IDENTIFICATION The model and manufacturing number are used for positive identification of component parts used in manufacturing. When engineering and manufacturing changes take place where interchangeability of components are affected, the manufacturing number will change. It is very important to use the model and manufacturing numbers at all times when requesting service or parts information.
PRODUCT DESIGN General Operation The GUCA and GCCA furnaces are equipped with an electronic ignition device used to light the burners and an induced draft blower to exhaust combustion products. An interlock switch prevents furnace operation if the blower door is not in place. Keep the blower access door in place except for inspection and maintenance. This furnace is also equipped with a self-diagnosing electronic control module.
COMPONENT IDENTIFICATION 5 9 10 27 10 28 34 4 11 3 13 3 * 2 26 12 * * 15 17 18 19 * * 32 33 31 19 20 20 24 3 3 23 31 21 16 33 32 21 22 30 25 14 16 * * 1 11 19 20 * * 23 30 24 29 25 28 27 * * 14 13 2 22 9 26 Upflow /Horizontal (GUCA Models) * * 21 15 18 17 12 19 20 21 7 8 7 6 4 BLOWER COMPARTMENT 7 BURNER COMPARTMENT 8 7 * BLOWER COMPARTMENT 6 * BURNER COMPARTMENT 5 1 Counterflow /Horizontal (GCCA Models) 1 Gas Valve 19 Coil Front Cover Press
COMPONENT IDENTIFICATION GUCA***BX** AIR DISCHARGE A 28 3/4 3/4 2 1/2 20 3/16 AIR INTAKE PIPE 2" PVC ALTERNATE GAS SUPPLY HOLE LEFT SIDE DRAIN LINE HOLES 1 1/2 14 2 1/16 VENT/FLUE PIPE 2" PVC DRAIN TRAP CL 30 1/4 CONDENSATE DRAIN TRAP w/ 3/4" PVC DISCHARGE (RIGHT OR LEFT SIDE) 40 4 1/8 27 1/8 30 1/4 SIDE CUT-OUT 19 3/16 2 5/8 19 3/16 2 1 3/4 ALTERNATE VENT/FLUE LOCATION 6 1/8 23 LOW VOLTAGE ELECTRICAL HOLE HIGH VOLTAGE ELECTRICAL HOLE ALTERNATE AIR INTAKE LOCATION STANDARD GAS SUPPLY H
PRODUCT DIMENSIONS GCCA***BX** LEFT SIDE VIEW FRONTVIEW 28 3/4 3/4 RIGHT SIDE VIEW A 2 1/2 AIR INTAKE PIPE 2" PVC 20 1/4 3/4 3/4 B (RETURN AIR) CONDENSATE DRAIN TRAP w/ 3/4" PVC DISCHARGE (RIGHT OR LEFT SIDE) 1 3/4 LOW VOLTAGE ELECTRICAL HOLE VENT/FLUE PIPE 2" PVC 2 1/16 40 HIGH VOLTAGE ELECTRICAL HOLE ALTERNATE VENT/FLUE LOCATION 6 1/8 28 5/16 28 5/16 LOW VOLTAGE ELECTRICAL HOLE 1 3/4 HIGH VOLTAGE ELECTRICAL HOLE ALTERNATE AIR INTAKE LOCATION 2 11/16 19 7/8 LEFT SIDE DRAIN LINE HOLE
PRODUCT DESIGN PRESSURE SWITCH TRIP POINTS AND USAGE CHART NEGATIVE PRESSURE ID BLOWER WITH FLUE NOT FIRING TYPICAL SEA LEVEL DATA NEGATIVE PRESSURE ID BLOWER WITH FLUE FIRING TYPICAL SEA LEVEL DATA NEGATIVE PRESSURE COIL COVER WITH FLUE NOT FIRING TYPICAL SEA LEVEL DATA NEGATIVE PRESSURE COIL COVER WITH FLUE FIRING TYPICAL SEA LEVEL DATA GUCA045BX30 GCCA045BX30 -1.00 -1.05 -0.65 -1.10 -0.37 20197305 20197306 -0.37 GUCA070BX30 GCCA070BX30 -0.80 -0.95 -0.60 -1.10 -0.
PRODUCT DESIGN Coil Matches: A large array of Amana coils are available for use with the new GUCA and GCCA furnaces, in either upflow, counterflow, or horizontal applications. These coils are available in both cased and uncased models, with or without a TXV expansion device. These new 90%+ furnaces match up with the existing Amana coils as shown in the chart below.
PRODUCT DESIGN Thermostats: The following Amana Thermostats are suggested for use with the GUCA and GCCA Furnace Models: Thermostats Thermostat Man/Auto Programmable Cool Heat Batt. Powered Batt. Bkup* Shape Color M0380101 Man. Changeover No 1 1 No No Rectangular Beige 1213401 Man. Changeover Yes 1 1 Yes No Rectangular White 1213402 Man. Changeover No 1 1 Yes No Rectangular White 1213408 Man.
PRODUCT DESIGN Counterflow Filters This furnace has provisions for the installation of return air filters at the counterflow top return. The furnace will accommodate the following filter sizes depending on cabinet size: Counterflow Top Return Return Air Cabinet Width Optional Access Door "A" Min 16 1/2 20 1/2 24 1/2 16 1/2 20 1/2 24 1/2 16 1/2 20 1/2 24 1/2 Filter Area Qty Filter Size Dimension "A" (in) (in) (in2) 600 2 15 X 20 X 1 800 2 20 X 20 X 1 1000 2 25 X 20 X 1 14.2 13.0 11.3 19.7 18.
FURNACE SPECIFICATIONS Model GUCA045BX30 GUCA070BX30 GUCA070BX40 GUCA090BX40 GUCA090BX50 GUCA115BX50 Btuh Input (US) 46,000 69,000 69,000 92,000 92,000 115,000 Output (US) 42,800 64,400 63,900 86,000 85,300 106,500 Input (CAN) 46,000 69,000 69,000 92,000 90,000 115,000 Output (CAN) 42,800 64,400 64,400 86,000 85,300 106,500 92.1% 92.1% 92.1% 92.1% 92.1% 92.1% Rated External Static (" w.c.) .20 - .50 .20 - .50 .20 - .50 .20 - .50 .20 - .50 .20 - .
FURNACE SPECIFICATIONS Model GCCA045BX30 GCCA070BX30 GCCA070BX40 GCCA090BX40 GCCA090BX50 GCCA115BX50 Btuh Input (US) 46,000 69,000 69,000 92,000 92,000 115,000 Output (US) 43,000 65,400 63,300 87,500 86,200 109,100 Input (CAN) 46,000 69,000 69,000 92,000 92,000 115,000 Output (CAN) 43,000 65,400 63,300 87,500 86,200 109,100 92.1% 92.1% 92.1% 92.1% 92.1% 92.1% Rated External Static (" w.c.) .20 - .50 .20 - .50 .20 - .50 .20 - .50 .20 - .50 .20 - .
BLOWER PERFORMANCE SPECIFICATIONS GUCA***BX** Blower Performance (CFM & Temperature Rise vs. External Static Pressure) ( External Static Pressure (Inches Water Column) Tons AC Model ) Heating Speed As Shipped Motor Speed at 0.5" ESP 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM HIGH 3.0 1322 --- 1298 --- 1278 --- 1243 --- 1196 --- 1137 1074 1000 GUCA045BX30 MED 2.
BLOWER PERFORMANCE SPECIFICATIONS GCCA***BX** Blower Performance (CFM & Temperature Rise vs. External Static Pressure) ( External Static Pressure (Inches Water Column) Tons AC Model ) Heating Speed As Shipped Motor Speed at 0.5" ESP 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM HIGH 3.0 1327 --- 1342 --- 1305 --- 1251 --- 1195 --- 1128 1056 969 GCCA045BX30 MED 2.
BLOWER PERFORMANCE SPECIFICATIONS 16 BTU OUTPUT vs TEMPERATURE RISE CHART 100 600 CFM 90 700 80 800 TEMPERATURE RISE 900 1000 70 1100 1200 60 1400 1600 50 1800 2000 2200 2400 CFM 40 30 FORMULAS BTU OUTPUT = CFM x 1.08 x RISE BTU OUTPUT RISE = ÷ CFM 1.
HOT SURFACE IGNITER PK-17 FRONT COVER PRESSURE SWITCH BU-27 C NO VT-28 LINE- H RD-11 GY-12 GY-34 GAS VALVE BK -3 WH-7 M1 P3 C2 BR-13 VT -28 WH-7 OR -22 C PRESSURE SWITCH NO GND YL-20 5 CIRCUIT CONNECTOR GN BK -1 WH -5 HE AT DISCONNECT L L GND JUNCTIONBOX ELE CTRONIC AIR CLEA NER CIRCULATOR BLOWER COOL-H O CO ID BLWR HUMIDIFIER N L N GND HUM-N CIR-N EAC-N LINE-N DISCONNECT TO 115VAC/ 1Ø /60 HZ POWER SUPPLY WITH OVERCURRENT PROTECTION DEVICE JUNCTION BOX WARNING:
W 24V THERMOSTAT CONNECTIONS Y ON ON ON OFF OFF ON OFF OFF 60 90 120 180 * * 24 VAC G C 115 VAC 60 90 BK-31 120 PIN JUMPER 180 * DIP SWITCHES XFMR-H OR-10 GY-8 40 VA TRANSFORMER 24VAC 3A 5 2 6 3 GY-8 OR-10 FUSE 1 VT -28 WH 33 CIRC-N WH-5 LINE-N BU-27 OR-15 GN PK-30 4 BR-13 BK-4 PK -30 GY-12 9 12 8 11 YL-20 GY-8 RD-11 1 2 3 4 XFMR-N OR-10 OR-22 10 7 WH-32 LINE-H RD -2 BK -3 PK-30 WH-7 BU-27 VT-28 BU-14 BLOWER COMPARTMENT DOOR SWITCH (OPEN W
ELECTRONIC AIR CLEANER TYPICAL SCHEMATIC GUCA***BX** OR GCCA***BX** MODEL FURNACES WHITE-RODGERS 50A65-288 INTEGRATED IGNITION CONTROL This schematic is for reference only. Not all wiring is as shown above, refer to the appropriate wiring diagram for the unit being serviced. CIR PARK PARK NEU HEAT COOL INDUCER EAU NEU EAC SCHEMATICS CIRCULATOR BLOWER HUMIDIFIER IND IND HUM NEU R K2 K3 FUSE RO2 RO1 ROLLOUT SWITCH TH K1 XFMR HOT LINE HOT 24 VAC 120 VAC XFMR NEU .
