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Amana GUIA070A30 Service Instructions Manual

40" 80% gas furnaces guia, gcia, guib, gcib, guic, gcic, guid, guis, gcis, guiv & accessories
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Service
Instructions
40" 80% Gas Furnaces
GUIA, GCIA, GUIB, GCIB, GUIC, GCIC
GUID, GUIS, GCIS, GUIV & Accessories
This manual is to be used by qualified HVAC
technicians only. Amana does not assume
any responsibility for property damage or
personal injury for improper service
procedures done by an unqualified person.
Heating
Air Conditioning
®
Model and Manufacturing
numbers listed on page 4&5
RS6620002
Revision 2
December 1998

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Summary of Contents for Amana GUIA070A30

  • Page 1: Service Instructions

    GUIA, GCIA, GUIB, GCIB, GUIC, GCIC GUID, GUIS, GCIS, GUIV & Accessories This manual is to be used by qualified HVAC technicians only. Amana does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person.

  • Page 2: Table Of Contents

    INDEX Important Safety Information ..................3 Product Identification ....................4-15 Furnace Specifications ..................... 16-26 Blower Performance Specifications ................27-34 Combustion and Ventilation air ................35-37 Product Design ......................38-46 System Operation ....................47-64 Polarization and Phasing ..................65 Scheduled Maintenance ................... 66-67 Servicing ........................

  • Page 3: Important Information

    DANGEROUS CONDITIONS (SUCH AS EXPOSURE TO ELECTRI- CAL SHOCK) MAY RESULT. THIS MAY CAUSE SERIOUS INJURY OR DEATH. AMANA WILL NOT BE RESPONSIBLE FOR ANY INJURY OR CAUTION PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES. IF YOU PERFORM SERVICE ON YOUR OWN PRODUCT, YOU ASSUME RESPONSIBILITY FOR ANY PERSONAL INJURY OR PROPERTY DAMAGE WHICH MAY RESULT.

  • Page 4: Product Identification

    It is very important to use the model and manufacturing numbers at all times when requesting service or parts information. MODEL MODEL MODEL GUIA045A30 P1177301F GUIB045A30 P1186401F GUIC045DA30 P1222501F GUIA070A30 P1177302F GUIB070A30 P1186402F GUIC070DA30 P1222502F GUIA070A40 P1177303F GUIB070A40 P1186403F GUIC070DA40 P1222503F...
  • Page 5 PRODUCT IDENTIFICATION The model and manuacturing number are used for positive identification of component parts used in manufacturing. At which time 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. MODEL MODEL MODEL...
  • Page 6 PRODUCT IDENTIFICATION The model and manuacturing number are used for positive identification of component parts used in manufacturing. At which time 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. FURNACE ACCESSORY KITS FTK__ Furnace Twinning Kit (Not for use with GUIS/GCIS/GUIV Furnace)
  • Page 7 PRODUCT IDENTIFICATION A 045 C A 50 Product Type Airflow Capability G: Gas Furnace 25: 2.5 Tons 30: 3.0 Tons 35: 3.5 Tons Supply Type 40: 4.0 Tons U: Upflow/Horizontal 50: 5.0 Tons C: Counterflow/Horizontal Additional Features * A: Standard Unit X: NOx Models Furnace Type I: Induced Draft (80%)
  • Page 8 PRODUCT IDENTIFICATION Rev. 2...
  • Page 9 PRODUCT IDENTIFICATION Rev. 2...
  • Page 10 PRODUCT IDENTIFICATION GUI_ 80% Upflow/Horizontal Upflow Upflow Upflow Left Side View Front View Right Side View 28-3/4 Knock-Out Venting 4 5/8 Electrical Hole "High Voltage" 4 11/16 Electrical Supply Supply Hole "Low Voltage" Supply 2-1/2 Hole 4-5/8 1 1/2 Side Side Cut-Out Cut-Out...
  • Page 11 PRODUCT IDENTIFICATION GCI_ 80% Counterflow/Horizontal COUNTERFLOW COUNTERFLOW COUNTERFLOW FRONT VIEW RIGHT SIDE VIEW LEFT SIDE VIEW 28 3/4 3" 20 1/8 4 3/4 28 1/4 4 5/8 31 5/8 34 5/8 KNOCK-OUT FOR HORIZONTAL VENTING A Raytheo n C ompany SUPPLY HOLE ELECTRICAL...

  • Page 12: Electronic Air Cleaner

    PRODUCT IDENTIFICATION ACCESSORIES MEDIA AIR CLEANER MAC1 MEDIA AIR CLEANER SPECIFICATIONS CAPACITY 600-2000CFM 12 MO.NOMINAL MEDIA SERVICE LIFE MEDIA LISTING UL CLASS 2 DIMENSIONS 7-1/4 22-1/8 22-5/8 17-11/16 RESISTANCE INCHES W.C. 1000 1200 1400 1600 1800 2000 All dimensions given in inches. MAC1 MEDIA AIR CLEANER Used On Models...
  • Page 13 PRODUCT IDENTIFICATION ACCESSORIES EXTERNAL FILTER RACK 23.567 SLOTS IN FILTER CLEAR SCREWS ON UNIT INTERNAL FILTER BLOWER DECK RETAINER SCREWS SCREWS (80% MODELS ONLY) 14.500 UNIT SIDE PANEL FRONT OF UNIT INTERNAL FILTER RETAINERS (80% MODELS ONLY) FILTER RACK ASSEMBLY (FACE FILTER OPENING BASE TOWARDS FRONT...
  • Page 14 PRODUCT IDENTIFICATION ACCESSORIES ACCOMODATOR ACG1625 AND ACG2025 ACCOMODATOR Filter Base Used on Models Required GUI_045_30 GUI_070_30 GUI_070_40 ACG1625-3 GUI_090_30 GUI_090_50 ACG1625-6 GUI_115_40 GUI_115_50 GUI_140_50 GUI_090_50 ACG2025-3 GUI_115_40 GUI_115_40 ACG2025-6 GUI_140_50 ACG1625 AND ACG2025 ACCOMODATOR DIMENSIONS Model Overall Opening Filter Number Size ACG1625-3 17-3/8 28-3/8 3-3/4 14-7/8...
  • Page 15 PRODUCT IDENTIFICATION ACCESSORIES COMMMON VENT KIT Vent Damper To Chimney From furnace Flow To Chimney Install vent damper with actuator to sides of vent only. Vent Flow Do not mount vent Damper damper with Install vent damper actuator above with actuator in or below the vent.

  • Page 16: Furnace Specifications

    FURNACE SPECIFICATIONS GUIA045A30 GUIA070A30 GUIA070A40 GUIA090A30 GUIA090A50 GUIA115A40 GUIA115A50 GUIA140A50 MODEL GUIA045B30 GUIA070B30 GUIA070B40 GUIA090B90 GUIA090B50 GUIA115B40 GUIA115B50 GUIA140B50 GUIA045C30 GUIA070C30 GUIA070C40 GUIA090C30 GUIA090C50 GUIA115C40 GUIA115C50 GUIA140C50 Btuh Input (US) 46,000 69,000 69,000 92,000 92,000 115,000 115,000 140,000 Output (US)
  • Page 17 FURNACE SPECIFICATIONS MODEL GUIA045CA30 GUIA070CA30 GUIA070CA40 GUIA090CA30 GUIA090CA50 GUIA115CA40 GUIA115CA50 GUIA140CA50 Btuh Input (US) 46,000 69,000 69,000 92,000 92,000 115,000 115,000 140,000 Output (US) 36,800 55,200 55,200 73,600 73,600 92,000 92,000 110,400 A.F.U.E. Rated External Static (WC) .10 - .50 .12 - .50 .12 - .50 .15 - .50...
  • Page 18 FURNACE SPECIFICATIONS GUIB045A30 GUIB070A30 GUIB070A40 GUIB090A30 GUIB090A50 GUIB115A40 GUIB115A50 GUIB140A50 MODEL GUIB045B30 GUIB070B30 GUIB070B40 GUIB090B30 GUIB090B50 GUIB115B40 GUIB115B50 GUIB140B50 GUIB045CX30 GUIB070CX30 GUIB070CX40 GUIB090CX30 GUIB090CX50 GUIB115CX40 GUIB115CX50 GUIB140CX50 Btuh Input (US) 46,000 69,000 69,000 92,000 92,000 115,000 115,000 140,000 Output (US) 36,800 55,200 55,200...
  • Page 19 FURNACE SPECIFICATIONS GUIC045CA30 GUIC070CA30 GUIC070CA40 GUIC090CA30 GUIC090CA50 GUIC115CA40 GUIC115CA50 GUIC140CA50 GUIC045CX30 GUIC070CX30 GUIC070CX40 GUIC090CX30 GUIC090CX50 GUIC115CX40 GUIC115CX50 GUIC140CX50 MODEL GUIC045DA30 GUIC070DA30 GUIC070DA40 GUIC090DA30 GUIC090DA50 GUIC115DA40 GUIC115DA50 GUIC140DA50 GUIC045DX30 GUIC070DX30 GUIC070DX40 GUIC090DX30 GUIC090DX50 GUIC115DX40 GUIC115DX50 GUIC140DX50 Btuh Input (US) 46,000 69,000 69,000 92,000 92,000...
  • Page 20 FURNACE SPECIFICATIONS GUID045CA30 GUID070CA30 GUID070CA40 GUID090CA30 GUID090CA50 GUID115CA50 GUID045CX30 GUID070CX30 GUID070CX40 GUID090CX30 GUID090CX50 GUID115CX50 MODEL GUID045DA30 GUID070DA30 GUID070DA40 GUID090DA30 GUID090DA50 GUID115DA50 GUID045DX30 GUID070DX30 GUID070DX40 GUID090DX30 GUID090DX50 GUID115DX50 Btuh Input (US) 46,000 69,000 69,000 92,000 92,000 115,000 Output (US) 36,800 55,200 55,200 73,600 73,600...
  • Page 21 FURNACE SPECIFICATIONS MODEL GUIC070DA40 GUIC070DX40 GUID070DA40 GUID070DX40 GCIC070DX40 Btuh Input (US) 69,000 69,000 69,000 69,000 69,000 Output (US) 55,200 55,200 55,200 55,200 55,200 A.F.U.E. Rated External Static (WC) .12 - .50 .12 - .50 .12 - .50 .12 - .50 .12 - .50 Temperature Rise °F 35 - 65...
  • Page 22 FURNACE SPECIFICATIONS GUIS070CA35 GUIS090CA50 GUIS090CA30 GUIS115CA50 GUIS070CX35 GUIS090CX50 GUIS140CA50 GCIS070CX35 GCIS090CX50 MODEL GUIS090DA30 GUIS115DA50 GUIS070DA35 GUIS090DA50 GUIS140DA50 GCIS070DX35 GCIS090DX50 GUIS090DX30 GUIS115DX50 GUIS070DX35 GUIS090DX50 Btuh Input (US) High Fire 69,000 92,000 92,000 115,000 138,000 69,000 92,000 Output (US) High Fire 55,200 73,600 73,600 92,000...
  • Page 23 FURNACE SPECIFICATIONS MODEL GUIV070DX40 GUIV090DX50 GUIV115DX50 GUIV140DX50 Btuh Input (US) High Fire 69,000 92,000 115,000 138,000 Output (US) High Fire 55,200 73,600 92,000 110,400 Btuh Input (US) Low Fire 48,000 64,000 80,000 96,000 Output (US) Low Fire 38,400 51,200 64,000 76,800 A.F.U.E.
  • Page 24 FURNACE SPECIFICATIONS GCIA045A30 GCIA070A30 GCIA070A40 GCIA090A30 GCIA090A50 GCIA115A40 GCIA115A50 GCIA140A50 MODEL GCIA045CA30 GCIA070CA30 GCIA070CA30 GCIA090CA30 GCIA090CA50 GCIA115CA40 GCIA115CA50 GCIA115CA50 GCIA045CX30 GCIA070CX30 GCIA070CX30 GCIA090CX30 GCIA090CX50 GCIA115CX40 GCIA115CX50 GCIA115CX50 Btuh Input (US) 46,000 69,000 69,000 92,000 92,000 115,000 115,000 140,000 Output (US) 36,800 55,200 55,200...
  • Page 25 FURNACE SPECIFICATIONS MODEL GCIB045A30 GCIB070A30 GCIB070A40 GCIB090A30 GCIB090A50 GCIB115A40 GCIB115A50 GCIB140A50 Btuh Input (US) 46,000 69,000 69,000 92,000 92,000 115,000 115,000 138,000 Output (US) 37,000 55,000 55,000 74,000 74,000 92,000 92,000 110,000 A.F.U.E. Rated External Static (WC) .10 - .50 .12 - .50 .12 - .50 .15 - .50...
  • Page 26 FURNACE SPECIFICATIONS MODEL GCIC045CX30 GCIC070CX30 GCIC070CX40 GCIC090CX30 GCIC090CX50 GCIC115CX40 GCIC115CX50 GCIC140CX50 Btuh Input (US) 46,000 69,000 69,000 92,000 92,000 115,000 115,000 140,000 Output (US) 36,800 55,200 55,200 73,600 73,600 92,000 92,000 110,400 A.F.U.E. Rated External Static (WC) .10 - .50 .12 - .50 .12 - .50 .15 - .50...

  • Page 27: Blower Performance Specifications

    BLOWER PERFORMANCE SPECIFICATIONS SINGLE STAGE CFM & Temperature Rise vs. External Static Pressue MODEL TONS AC External Static Pressure, Inches Water Column MOTOR (Htg. Speed @ 0.5" SPEED As Shipped) Rise Rise Rise Rise Rise Rise HIGH 1460 1400 1345 1280 1200 1110...
  • Page 28 BLOWER PERFORMANCE SPECIFICATIONS SINGLE STAGE CFM & Temperature Rise vs. External Static Pressue MODEL TONS AC External Static Pressure, Inches Water Column MOTOR (Htg. Speed @ 0.5" SPEED As Shipped) Rise Rise Rise Rise Rise Rise HIGH 1455 1430 1360 1255 1160 1040...
  • Page 29 BLOWER PERFORMANCE SPECIFICATIONS SINGLE STAGE CFM & Temperature Rise vs. External Static Pressue External Static Pressure, Inches Water Column MODEL TONS AC MOTOR (Htg. Speed @ 0.5" SPEED As Shipped) Rise Rise Rise Rise Rise HIGH 1799 1742 1694 1622 1529 1444 GUI_070_40...
  • Page 30 CFM & Temperature Rise vs. External Static Pressue External Static Pressure, Inches Water Column MODEL MOTOR TONS AC (Htg. Speed RISE, RISE, RISE, RISE, RISE, RISE, RISE, RISE, RISE, RISE, SPEED @ 0.5" ESP as Shipped) HIGH HIGH HIGH HIGH HIGH FIRE FIRE...
  • Page 31 BLOWER PERFORMANCE SPECIFICATIONS TWO STAGE - VARIABLE SPEED Cooling Speed Chart (“Y” on Two-Stage Integrated Furnace Control or “Y/Y2 on Interface Board) GUIV70DX40 GUIV90DX50 GUIV115X50 GUIV140DX50 CFM @ CFM @ CFM @ CFM @ Cooling Cooling Cooling Cooling Adjust .1 to .8 "WC Adjust .1 to .8 "WC Adjust...
  • Page 32 BLOWER PERFORMANCE SPECIFICATIONS TWO STAGE - VARIABLE SPEED Continuous Fan Speed Charts Cooling - Based Continuous Fan Speeds ("G" connected to "G" on Interface Board) GUIV070DX40 GUIV90DX50 GUIV115DX50 GUIV140DX50 CFM @ CFM @ CFM @ CFM @ Cooling Cooling Cooling Cooling Adjust .1 to .8 "WC...
  • Page 33 BLOWER PERFORMANCE SPECIFICATIONS TWO STAGE - VARIABLE SPEED Heating Speed Charts ("W1" must be connected to "W1" on Two-Stage Integrated Furnace Control) ("W2" must be connected to "W2" on Two-Stage Integrated Furnace Control) GUIV070DX40 GUIV090DX50 CFM @ CFM @ Rise Rise CFM @ CFM @...
  • Page 34 BLOWER PERFORMANCE SPECIFICATIONS Rev. 2...

  • Page 35: Combustion And Ventilation Air

    COMBUSTION AND VENTILATION AIR (c) In addition to air needed for combustion, process air shall WARNING be provided as required for: cooling of equipment or mate- rial, controlling dew point, heating, drying, oxidation or dilu- Property damage, bodily injury, or death may occur if tion, safety exhaust, odor control, and air for compressors.
  • Page 36 COMBUSTION AND VENTILATION AIR all equipment in the enclosure. The following drawing illustrates the air opening specifications for equipment located in confined spaces; all air from outdoors through ventilated attic. Equipment Located in Confined Spaces; All Air from Inside Building. See 5.3.3-a (b) All Air from Outdoors: The confined space shall be pro- vided with two permanent openings, one commencing within 12 inches of the top and one commencing within 12 inches of...
  • Page 37 COMBUSTION AND VENTILATION AIR 5.3.4 Specially Engineered Installations: 5.3.6 Special Conditions Created by Mechanical Ex- hausting or Fireplaces: The requirements of 5.3.3 shall not necessarily govern when special engineering, approved by the authority having juris- Operation of exhaust fans, ventilation systems, clothes dry- diction, provides an adequate supply of air for combustion, ers, or fireplaces may create conditions requiring special ventilation, and dilution of flue gases.

  • Page 38: Product Design

    PRODUCT DESIGN GAS SUPPLY AND PIPING CAUTION The rating plate is stamped with the model number, type of gas, and gas input rating. Make sure the furnace is equipped The furnace will naturally derate itself with altitude. to operate on the type of gas available. Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure.
  • Page 39 PRODUCT DESIGN CONNECTING THE GAS PIPING - NATURAL GAS This unit must be isolated from the gas supply system by closing its individual manual shutoff valve during any pres- Refer to Installation Instructions for the general layout of the sure testing of the gas supply piping system at test pres- furnace.
  • Page 40 PRODUCT DESIGN The following drawing illustrates a typical propane gas in- PROPANE PIPING CHART stallation. Sizing Between First and Second Stage Regulator* Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting. Capacities in 1,000 BTU/hour. Pipe or Nominal Pipe Size Tubing...
  • Page 41 PRODUCT DESIGN ELECTRICAL WIRING Accessory Installation. Follow the electronic air cleaner and humidifier manufacturer's instructions for mounting and electrically grounding these accessories. Check that the WARNING power supply to the furnace has been disconnected. Wire the accessories to the furnace control module as shown in To avoid the risk of electrical shock, wiring to the unit the following diagram.
  • Page 42 PRODUCT DESIGN THERMOSTAT WIRING Thermostat Wiring - GUIV Variable Speed, Two Stage Furnace A variable speed, two stage furnace will have both “W1” and Thermostat Wiring - Single Stage Furnace The single stage furnace will have a "W1" terminal and will “W2”...
  • Page 43 Space provisions on the control panel have been made to dehumidistat (typically, the black lead) to the screw termi- fasten to the Amana FFK03A Fossil Fuel Control Board to nal marked “DEHUM” on the air circulating motor interface the furnace control panel (see FFK03A Fossil Fuel Mount- board (see Air Circulating Motor Interface figure below).
  • Page 44 PRODUCT DESIGN Style A Style B COOL ADJUST HEAT NORM Second Delay ( ) + TEST Second Delay Speed Tap Adjustments Second Note: The heating speeds must be within the specified rise Delay range. Refer to the BLOWER PERFORMANCE section of this manual or SPECIFICATION SHEET for this unit for tem- perature rise settings.
  • Page 45 PRODUCT DESIGN If “Y” from the thermostat is connected to “Y/Y2” on the air A duct system should be installed in accordance with Stan- circulation motor interface board (Thermostat Wiring Figure dards of the National Board of Fire Underwriters for the In- C), then the following on and off sequences will occur.
  • Page 46 Minimum Filter Sizes. the furnace should be installed in parallel with or on the up- NOTE: The HFC Filter cabinets (used with Amana GSI fur- stream side of the cooling unit to avoid condensation in the naces) will not match the bottom opening of a GUIA fur- heating element.

  • Page 47: System Operation

    SYSTEM OPERATION SEQUENCE OF OPERATION 6. The control waits 30 seconds and turns on the air circu- lation blower to the speed that was selected for heating (Models with White-Rodgers 50A50 or Heatcraft HSI 1- operation. At this time the optional humidifier and elec- 1A, HSI-2 Integrated Ignition Control) tronic air cleaner are also energized.
  • Page 48 SYSTEM OPERATION ABNORMAL OPERATION 3. Pressure Switch Stuck Closed. If the control senses the pressure switch is closed when the induced draft (Models with White-Rodgers 50A50 or Heatcraft HSI 1- blower is off, it waits until the fault is corrected. The di- 1A Integrated Ignition Control) agnostic light code for this problem is two short flashes The following presents the probable causes of questionable...
  • Page 49 SYSTEM OPERATION ABNORMAL OPERATION 5. Open Primary or Auxiliary Limit. If the limit control opens, the air circulation and induced draft blower will (Models with Heatcraft HSI-2 Integrated Ignition Control) be turned on until the limit closes. The diagnostic light The following presents the probable causes of questionable code for this problem is four short flashes followed by a furnace operation and how to fix them.
  • Page 50 TROUBLESHOOTING CHART FOR MODELS USING HEATCRAFT HSI-2 IGNITION CONTROL Associated Symptoms of Abnormal Cautions and LED Code Fault Description(s) Possible Causes Corrective Action Operation Notes (See Note 2) - No 115 V power to furnace, or no 24 V - Manual disconnect switch OFF, door switch open, - Assure 115 V and 24 V power to furnace and integrated - Furnace fails to operate.
  • Page 51 TROUBLESHOOTING CHART FOR MODELS USING HEATCRAFT HSI-2 IGNITION CONTROL Associated Symptoms of Abnormal Cautions and LED Code Fault Description(s) Possible Causes Corrective Action Operation Notes (See Note 2) - Turn power OFF prior to repair. - Flame sensor is coated/oxidized. - Sand flame sensor if coated/oxidized.
  • Page 52 SYSTEM OPERATION SEQUENCE OF OPERATION 5. One second after the gas valve opens, the ignitor is de- energized. (Models with White-Rodgers 50A52 Radiant Sense Igni- tion Control) 6. The radiant sensor monitors the flame. As long as flame is present and the call for heat continues, the gas valve NORMAL SEQUENCE OF OPERATION will remain open.
  • Page 53 SYSTEM OPERATION ABNORMAL OPERATION 8. Interruption of Power Supply. If the line voltage power is interrupted, the gas valve closes. It will remain closed (Models with White-Rodgers 50A52 Radiant Sense Igni- until line voltage power is restored and a low voltage call tion Control) for heat occurs at the room thermostat.
  • Page 54 On some If the last call for heat was a call for low heat, the air circula- Amana models, the high heat air circulator speed may tor motor will run on the low heat speed for the duration of be the same as the low heat circulator speed.
  • Page 55 SYSTEM OPERATION Timing Charts For GUIS/GCIS Two Stage Integrated Ignition Control Operation GUIS/GCIS Example 1: Continuous Call For Low Stage Heat Only High Circulator Blower Gas Valve Ignitor PS2 Closed PS1 Closed Pressure Open Switches High Induced Draft Blower High Thermostat 60, 90 120, or 180...
  • Page 56 SYSTEM OPERATION Timing Charts For GUIS/GCIS Two Stage Integrated Ignition Control Operation GUIS/GCIS Example 3: Initial Call For Low Heat, Change In Call To High Heat Call Change to High Heat High Circulator Blower Gas Valve Ignitor PS2 Closed Pressure PS1 Closed Switches Open...
  • Page 57 SYSTEM OPERATION ABNORMAL OPERATION 3. Pressure Switch Stuck Closed. If the control senses that either pressure switch is closed when the induced (GUIS & GCIS Two Stage Models with White-Rodgers draft blower is off, it waits until the fault is corrected. The 50A51-215 Integrated Ignition Control) diagnostic light code for this problem is two short flashes The following presents the probable causes of questionable...
  • Page 58 SYSTEM OPERATION SEQUENCE OF OPERATION 12. The two-stage thermostat is satisfied and opens. (GUIV Variable Speed Two Stage Models with White- 13. The control turns the gas valve off. Rodgers 50A51-255 Integrated Ignition Control) 14. After a five second delay while flue products are purged NORMAL SEQUENCE OF OPERATION from the heat exchanger, the induced draft blower motor is turned off (the induced draft blower is on low speed...
  • Page 59 SYSTEM OPERATION Timing Charts For GUIV Variable Speed Two Stage Integrated Ignition Control Operation GUIV Example 1: Continuous Call For Low Stage Heat Only High Circulator Blower Gas Valve Ignitor PS2 Closed PS1 Closed Pressure Open Switches High Induced Draft Blower High Thermostat...
  • Page 60 SYSTEM OPERATION Timing Charts For GUIV Variable Speed Two Stage Integrated Ignition Control Operation GUIV Example 3: Initial Call For Low Heat, Change In Call To High Heat Call Change to High Heat High Circulator Blower Gas Valve Ignitor PS2 Closed Pressure PS1 Closed Switches...
  • Page 61 SYSTEM OPERATION Timing Chart for Normal Cooling Operation (With “Y” From Thermostat Connected to “Y” On Integrated Furnace Control) Indoor Fan Outdoor Fan Compressor Thermostat Seconds Timing Chart for Normal Cooling Operation (With “Y” From Thermostat Connected to “Y/Y2” On Air Circulating Motor Interface Board) Indoor Fan Outdoor Fan...
  • Page 62 SYSTEM OPERATION Abnormal Operation 3. Pressure Switch Stuck Closed. A sticking pressure switch can be caused by either a faulty pressure switch, (GUIV Variable Speed Two Stage Models with White- faulty wiring, a disconnected hose, or a restricted intake Rodgers 50A51-255 Integrated Ignition Control) or flue piping.
  • Page 63 SYSTEM OPERATION OPERATING INSTRUCTIONS Pressure Regulator Outlet (Manifold) Adjustment Pressure Tap (Under Cap Screw) 1. Close the manual gas valve external to the furnace. Honeywell 2. Turn off the electrical power supply to the furnace. 3. Set room thermostat to lowest possible setting. 4.
  • Page 64 SYSTEM OPERATION Gas Valve High Manifold On/Off Regulator Adjustment Control Lever Screw (Under Cap) Outlet (Manifold) Pressure Tap (Side of Valve) Inlet Outlet INLET OUTLET Pressure Regulator Inlet Pressure Tap Outlet (Manifold) Low Manifold Adjustment (Side) Pressure Tap Inlet Pressure Tap (Under Cap Screw) Regulator Adjustment Gas Valve...

  • Page 65: Polarization And Phasing

    POLARIZATION AND PHASING As more and more electronic's are introduced to the Heat- Incoming Power ing Trade, Polarization of incoming power and phasing of Meter Reads Meter Reads 120 Volts 0 Volts primary to secondary voltage on transformers becomes more important.
  • Page 66 MAINTENANCE WARNING WARNING To avoid electrical shock, injury or death, disconnect Disconnect the electrical power to the furnace before electrical power before performing any maintenance. removing the filter or performing any other mainte- nance. CAUTION Maintenance If you must handle the ignitor, handle with care. Touch- Improper filter maintenance is the most common cause of ing the ignitor body with bare fingers, rough handling, inadequate heating or cooling performance.
  • Page 67 MAINTENANCE 9. Clean residue from furnace using a vacuum cleaner. Upright Counterflow Filter Removal To remove filters from the ductwork above an upright coun- 10. Replace the parts removed in the previous steps in re- terflow installation: verse order. 1. Turn off electrical power to furnace. 11.

  • Page 68: Servicing

    SERVICING TEST EQUIPMENT EXAMPLE: GUIA090B30 Proper test equipment for accurate diagnosis is as essen- INPUT: 92,000 BTU/HR tial as regulator hand tools. OUTPUT CAP: 74,000 BTU/HR The following is a must for every service technician and ser- Should the figure you calculated not fall within five (5) per- vice shop.
  • Page 69 SERVICING 1 Thousand 1 Million 10 Thousand 100 Thousand CUBIC Quarter FEET Foot Foot GAS RATE - CUBIC FEET PER HOUR GAS RATE -- CUBIC FEET PER HOUR Size of Test Dial Size of Test Dial Seconds for Seconds for cu/ft cu/ft cu/ft...
  • Page 70 SERVICING Complaint No Heat Unsatisfactory Heat POSSIBLE CAUSE Test Method DOTS IN ANALYSIS Remedy GUIDE INDICATE "POSSIBLE CAUSE" • Power Failure Test Voltage • Blown Fuse Test Voltage • Loose Connection Check Wiring • Shorted or Broken Wires Check Wiring •...
  • Page 71 SERVICING SECTION INDEX S-1 Checking Voltage S-2 Checking Wiring S-3 Checking Thermostat, Wiring, and Anticipator 72-73 S-4 Checking Transformer and Control Circuit S-5 Checking Primary Limit Control 73-75 S-6 Checking Auxiliary Limit Control 75-76 S-7 Checking Flame Rollout Control S-8 Checking Pressure Control 76-79 S-9 Checking Air Circulation Blower Motor or Induced Draft Blower Motor...
  • Page 72 SERVICING S-1 CHECKING VOLTAGE S-3 CHECKING THERMOSTAT, WIRING, AND AN- TICIPATOR WARNING S-3A Thermostat and Wiring Disconnect Electrical Power Supply: WARNING 1. Remove blower compartment door from furnace to gain entry to Junction Box. Disconnect Electrical Power Supply: 2. Remove cover from Junction Box and gain access to 1.
  • Page 73 SERVICING If the anticipator current draw is unknown, then an amp With Power On (and Door Interlock Switch closed): draw should be taken to determine the anticipator set- ting. Use an amprobe as shown in the following drawing. WARNING LINE VOLTAGE NOW PRESENT. 10 TURNS OF THERMOSTAT WIRE 3.
  • Page 74 T.O.D. PRIMARY LIMIT (107283 _ _) Part Number Open Setting 180 200 200 160 170 220 Style 1 Blue 1 Red 1 Green Sleeve Colors Green Yellow Blue Black Yellow Red Green Brown Black Blue Orange Orange Green Blue Black Brown Yellow Orange Brown Yellow 1 Yellow 1 Yellow...
  • Page 75 SERVICING If this limit control opens, the air circulation blower and vent WARNING blower will run continuously. On models with the 50A50, 50A51, HSI 1-1A and HSI-2 ignition controls the diagnostic Disconnect Electrical Power Supply: light will flash four times. These symptoms are identical to a trip of the primary limit control.
  • Page 76 SERVICING To aid in identifying these controls, color coded labels are WARNING attached to the back of the controls. Refer to the chart be- low for color codes and temperature settings. LINE VOLTAGE NOW PRESENT. AUXILLARY LIMIT SWITCHES (101235_ _) 1.
  • Page 77 SERVICING PRESSURE SWITCH TRIP POINTS AND USAGE CHART MINIMUM MINIMUM CATEGORY 1 NEGATIVE NEGATIVE PRESSURE SWITCH TRIP POINTS AND USAGE PRESSURE PRESSURE MODEL WITH FLUE WITH FLUE 0 to 7500 ft. 7501 to 9500 ft. 9501 to 11000 ft. NOT FIRING FIRING TYPICAL SEA TYPICAL SEA...
  • Page 78 PRESSURE SWITCH TRIP POINTS AND USAGE CHART MINIMUM MINIMUM NEGATIVE NEGATIVE CATEGORY 1 PRESSURE PRESSURE PRESSURE SWITCH TRIP POINTS AND USAGE MODEL WITH FLUE WITH FLUE NOT FIRING FIRING TYPICAL SEA TYPICAL SEA 0 to 3000 ft. 3001 to 7000 ft. 7001 to 8500 ft.
  • Page 79 SERVICING 7. Begin to restrict the flue outlet until the pressure control WARNING trips - cycling OFF the burner. The trip points should be as shown on the preceeding pages. Disconnect Electrical Power Supply: 8. If not as listed, replace control. 1.
  • Page 80 SERVICING S-9A ECM MOTOR INTERFACE BOARD S-10 CHECKING CAPACITOR GUIV model furnaces use an ECM blower motor. These mo- The direct drive motors are of the permanent split capacitor tors use an electronic control module attached to the mo- design. A run capacitor is wired across the auxiliary and a tors end bell to control motor operation.
  • Page 81 SERVICING Open - no reading - replace. Reverse leads. 4. Reverse leads Some redundant coils have (dividers) di- Check again no reading - replace. odes. Reverse leads and recheck. If not as above, replace the entire valve. S-10B Capacitance Test S-12 CHECKING HOT SURFACE IGNITOR A silicone carbide restrictive element ignitor is used for igni- tion.
  • Page 82 SERVICING The ignition control module is a combination electronic and 4. If voltage is present in Steps 1 through 3 and the in- electromechanical device and is not field repairable. Com- duced draft blower is operating, check for 120 volts to plete unit must be replaced.
  • Page 83 SERVICING Ignitor Flame Sensor WARNING (All Models) (50A50 models) LINE VOLTAGE NOW PRESENT. 3/8" These tests must be completed within a given time frame ± .1/16" due to the operation of the ignition control. See "Sequence of Operation" section for timing chart. ±...
  • Page 84 SERVICING S-14A Models with WR50A52 Ignition Control & WARNING Radiant Sense Flame Sensor The Radiant Sensor is a single pole double throw switch LINE VOLTAGE NOW PRESENT. that is activated by a combination of the heat radiating from 4. Place unit into a heating cycle. the burner flame, and the reflected heat from the ignitor.
  • Page 85 SERVICING S-16 CHECKING ORIFICES S-17 HIGH ALTITUDE APPLICATION (USA) A predetermined fixed gas orifice is used in all of these fur- For those altitudes starting at 6000 feet for "C" and "D" model naces. That is an orifice which has a fixed bore and position furnaces, or 7500 feet for "A"...
  • Page 86 SERVICING S-18 CHECKING GAS PRESSURE Gas Line Gas Supply Pressure Measurement Gas Shutoff Valve CAUTION To prevent unreliable operation or equipment damage, Gas Line the inlet gas supply pressure must be as specified on To Furnace the unit rating plate with all other household gas fired appliances operating.
  • Page 87 SERVICING Gas Manifold Pressure Measurement and Adjustment The final manifold pressure must not vary more than ± 0.3 “ w.c. from the above specified pressures. Any necessary major changes in gas flow rate should be made by changing CAUTION the size of the burner orifice. To prevent unreliable operation or equipment dam- 5.
  • Page 88 SERVICING 9. Turn on gas to furnace and check for leaks. If leaks are WARNING found, repair and then reinstall burner compartment door. 10. Turn on electrical power and verify proper unit operation. Disconnect Electrical Power and Shut Off Gas Supply: Make sure furnace operates at the proper manifold pres- 8.
  • Page 89 SERVICING S-21 CHECKING DUCT STATIC S-22 CHECKING TEMPERATURE RISE The maximum and minimum allowable external static pres- Temperature rise is related to the BTUH output of the fur- sures are found in the specification section. These tables nace and the amount of air (CFM) circulated over the heat also show the amount of air being delivered at a given static exchanger.
  • Page 90 1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS. FURNACE MODEL SPEED MOTOR TO "HEAT" SPEEDS GN GREEN 2. AMANA SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING. BK BLACK GUIA,GCIA: 045A30, 3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE RD-24 INSTALLATION...
  • Page 91 1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS. FURNACE MODEL SPEED MOTOR TO "HEAT" SPEEDS GN GREEN 2. AMANA SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING. BK BLACK GUIB,GCIB: 045A30, 3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE RD-24 INSTALLATION...
  • Page 92 THERMOSTAT 115V FIELD CONNECTIONS GAS VALVE CONNECT PRIMARY (GV) #26 BK (HI) ELECTRONIC ROLLOUT #23 BU (MED) AIR CLEANER CONTROL CIRCUL. LIMIT (RL) BLOWER #29 OR (MED LOW) (ACB) #24 RD (LOW) CAPACITOR TERMINAL ORDER REARRANGED FOR CLARITY (CAP) BR-27 BR-21 GY-47 VT-20...
  • Page 93 THERMOSTAT CONNECTIONS GAS VALVE (GV) #26 BK (HI) #23 BU (MED) CONTROL CIRCUL. BLOWER #29 OR (MED LOW) YL-8 (ACB) #24 RD (LOW) CAPACITOR TERMINAL ORDER REARRANGED FOR CLARITY GN-7 (CAP) RD-5 PARK BK-4 PARK HEAT HEAT BU-15 VT-12 PRESSURE COOL COO L CONTROL...
  • Page 94 THERMOSTAT 115V FIELD PRIMARY CONNECTIONS CONNECT ROLLOUT #26 BK (HI) ELECTRONIC LIMIT (RL) CIRCUL. #23 BU (MED) CONTROL AIR CLEANER GAS VALVE BLOWER #29 OR (MED LOW) (GV) (ACB) #24 RD (LOW) CAPACITOR TERMINAL ORDER REARRANGED FOR CLARITY (CAP) GY-47 BR-21 BK-6 CONTROL...
  • Page 95 OR ORANGE MOTOR MOTOR MOTOR MOTOR BLOWER SPEED * MANUFACTURER'S 2. AMANA SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING. VARIABLE LETTER SPEEDS TO HEAT SPEEDS TO HEAT VT VIOLET 3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE...
  • Page 96 * MANUFACTURER'S VARIABLE LETTER SPEEDS TO HEAT SPEEDS TO HEAT 2. AMANA SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING. VT VIOLET 3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE GN GREEN GUIS070*35 MED LOW...
  • Page 97 TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY, WARNING OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.

  • Page 98: Wiring Diagrams

    SCHEMATICS GUIA, GUIC, GCIA, GCIC WHITE-RODGERS 50A50 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. Rev. 2...
  • Page 99 SCHEMATICS GUIB, GCIB WHITE-RODGERS 50A52 RADIANT SENSE 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. Rev. 2...
  • Page 100 SCHEMATICS GUID HEATCRAFT HSI 1-1A 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. Rev. 2...
  • Page 101 SCHEMATICS GUID HEATCRAFT HSI-2 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. Rev. 2...
  • Page 102 SCHEMATICS GUIS, GCIS WHITE-RODGERS 50A51-215 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. Rev. 2...
  • Page 103 SCHEMATICS GUIV WHITE-RODGERS 50A51-255 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. Rev. 2...
  • Page 104 SCHEMATICS H U M E A C X F M R L I N E C I R VT-02 I G N I N D N.C. H U M E A C N.O. X F M R NORMAL L I N E SERVICE N.O.
  • Page 105 SCHEMATICS Furnace 1 TH FP HL0 TR R01 MV GND HLI MV R02 PS NEUTRAL 120VAC HOT 120VAC CIRCULATOR BLOWER RD-2 WH-2 RD-2 BK-3 RD-2 BK-2 YL-7 Furnace 2 TH FP HL0 TR R01 MV GND HLI MV R02 PS NEUTRAL 120VAC HOT 120VAC CIRCULATOR BLOWER...

  • Page 106: Schematics

    SCHEMATICS * Tape wire ends if not used. FURNACE TWINING KIT - FTK03A This schematic is for reference only. Not all wiring is as shown above, refer to the appropriate wiring diagram for the unit being serviced. (Not for use with GUIS/GCIS/GUIV Furnaces) Rev.

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