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AMH8, GMH8, GDH8, ADSH8 & Accessories This manual is to be used by qualified, professionally trained HVAC technicians only. Goodman does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person.
áreas cerradas como estacionamientos ó cuartos de servicio. To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact: CONSUMER INFORMATION LINE GOODMAN BRAND PRODUCTS ® TOLL FREE 1-877-254-4729 (U.S. only) Las emisiones de monóxido de carbono pueden circular a través...
PRODUCT IDENTIFICATION The model and manufacturing number are used for positive identification of component parts used in manufacturing. Please use these numbers when requesting service or parts information. Goodman Furnace Nomenclature (13 Digits) Brand Minor Revision G - Goodman A - Initial Release A- Amana®...
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GDH81005C* models are low NOx. Chassis sizes are 14", 17.5" and 21" wide. Goodman® Brand 80% Modified Two-Stage Gas Furnace , fired at 20,000 BTUH per burner. GDH80403A* Dedicated down flow installation, 33 3/8" tall, Induced draft, Two stage gas valve, Integrated circuit...
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4,500 ft GMH81205D* GMH80403A* Goodman® Brand 80% Modified Two-Stage Gas Furnace, fired at 20,000 BTUH per burner. GMH80603A* Upflow/Horizontal Left and Right installation, 33 3/8" tall, Induced draft, Two stage gas valve, GMH80604B* Integrated circuit board controlling 2nd stage gas valve by time.
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PRODUCT IDENTIFICATION MODEL# MFG.# DESCRIPTION AMH80453A* AMH80703A* Amana® Brand 80% Modified Two-Stage Gas Furnace, Upflow/Horizontal Left and Right AMH80704B* installation, 33 3/8" tall, Two tone painted cabinet. Induced draft, Two stage gas Valve, Integrated AMH80903B* AMH8**CA circuit board controlling 2nd stage gas valve by time. Left or right side gas entry. AMH80904C* Stainless steel heat exchanger.
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PRODUCT IDENTIFICATION MODEL# MFG.# DESCRIPTION Amana® Brand 80% Modified Two-Stage Gas Furnace, Dedicated down flow installation, 33 3/8" ADSH800403AX* tall, Two tone painted cabinet. Induced draft, Two stage gas Valve, Integrated circuit board controlling ADSH800603AX* ADSH80***AA 2nd stage gas valve by time. Left or right side gas entry. Stainless steel heat exchanger. PSC b ADSH800804CX* lower motor.
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An anti-short cycle feature initiates a 3 minute timed off delay when the compressor goes off. External Filter Rack Kit . For use with Goodman® and Amana® Brand upflow furnaces. This kit P1221001...
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An anti-short cycle feature initiates a 3 minute timed off delay when the compressor goes off. External Filter Rack Kit . For use with Goodman® and Amana® Brand upflow furnaces. This kit P1221001...
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ACCESSORIES EXTERNAL FILTER RACK KIT ( EFR01 ) SLOTS IN FILTER CLEAR SCREWS ON UNIT BLOWER DECK SCREWS UNIT SIDE PANEL FRONT OF UNIT FILTER RACK ASSEMBLY (FACE FILTER OPENING BASE TOWARDS FRONT OF UNIT OF UNIT) RETURN AIR CUTOUT AREA LOWER EDGE SCREW EFR01 EXTERNAL FILTER RACK KIT...
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ACCESSORY WIRING DIAGRAMS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. 24VAC P1-8 +VDC POWER SUPPLY INPUT POWER +5VDC P1-7 FURNACE DEMAND W1-FURN...
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ACCESSORY WIRING DIAGRAMS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. FURNACE TWINING KIT - FTK04 (UTEC Control Board) This wiring diagram is for reference only.
OPERATING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE OPERATING WARNING: Improper If you do not follow these instructions exactly, alteration, service or a fire or explosion may result causing property maintenance can damage, personal injury or loss of life. cause injury or property damage.
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OPERATING INSTRUCTIONS CONSIGNES DE SECURITE - LIRE INSTRUCTIONS DE SERVICE AVANT D'ALLUMER L'APPAREIL 1. UN INSTANT! Lisez d'abord les consignes de securite ci-dessus. 2. Reglez le thermostat a son point le plus bas. AVERTISSEMENT: Le non-respect des instructions qui suivent peut 3.
Retail stores, Nursing homes, Hotels/motels, Common or office areas. In such applications, the furnace must be installed WARNING installation instructions. with the Goodman & Amana Brand 80% furnaces are ETL certi- ® ® fied appliances and are appropriate for use with natural...
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PRODUCT DESIGN • Ensure upflow or horizontal furnaces are not in- National Fire Protection Association stalled directly on carpeting, or any other com- 1 Batterymarch Park bustible material. The only combustible material Quincy, MA 02269-7471 allowed is wood. • A special accessory subbase must be used for up- CSA International right counterflow unit installations over any com- 8501 East Pleasant Valley...
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PRODUCT DESIGN • If the furnace is installed horizontally, the fur- XISTING URNACE EMOVAL nace access doors must be vertical so that the NOTE: When an existing furnace is removed from a vent- burners fire horizontally into the heat exchanger. ing system serving other appliances, the venting sys- Do not install the unit with the access doors on tem may be too large to properly vent the remaining...
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PRODUCT DESIGN 9.3* Air for Combustion and Ventilation. Thermostat Location In an area having good air circulation, locate the ther- 9.3.1 General. mostat and dehumidistat (if applicable) about five feet high on a vibration-free inside wall. Do not install the 9.3.1.1 Air for combustion, ventilation, and dilution of flue gases for thermostat or dehumidistat where it may be influenced appliances installed in buildings shall be obtained by application of one of...
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PRODUCT DESIGN (3) For purposes of this calculation, an infiltration rate greater than 0.60 Chimney or Gas Vent ACH shall not be used in the equations in 9.3.2.2(1) and 9.3.2.2(2). Ventilation louvers (each end of attic) NOTE: The inlet and outlet air 9.3.2.3 Indoor Opening Size and Location.
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PRODUCT DESIGN 9.3.3.2* One Permanent Opening Method. One permanent open- 9.3.6.2 Each of the appliances served shall be interlocked to the me- ings, commencing within 12 in. (300 mm) of the top of the enclosure, chanical air supply system to prevent main burner operation where the shall be provided.
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PRODUCT DESIGN Upflow or Horizontal units are shipped with the in- 9.3.8.7 The remaining space surrounding a chimney liner, gas vent, spe- cial gas vent, or plastic piping installed within a masonry, metal, or factory duced draft blower discharging from the top of the fur- built chimney shall not be used to supply combustion air.
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PRODUCT DESIGN Crown Wash Proper Chimney Line, terminate with listed vent cap Termination? Roof Line (Check 1) (Fix 1) Clay Tile Size Generally Clay Tile Size: 8" x 8" x12" 12" x 12" (24" Length) (Each x 24" Length) Attic Floor Chimney channel free of solid and Change venting...
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PRODUCT DESIGN 10' or Less Check 3 - Chimney Crown Condition. Damage from condensate usually shows up first in the crown. If any of the following trouble signs are present, 2' Min. 2' Min. 3' Min. the condition of the crown is not satisfactory: a) Crown leaning b) Bricks missing Wall or...
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PRODUCT DESIGN amendments, then the clay tile liner can probably be Flexible liners should be hung straight or nearly straight. used as a vent for the gas appliances. However, the If it is spiraled in the chimney and in good condition, it installer must keep in mind the following factors which should be rehung.
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PRODUCT DESIGN Fix 4 - Relining. To install the liner, read and follow the liner Relining options include B vent and flexible liners. manufacturer’s instructions and your local codes. Ex- If the chimney has diagonal offsets, B vent probably can- cess liner length should be pulled out of the chimney not be used.
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PRODUCT DESIGN This furnace is shipped from the factory configured for INLET GAS SUPPLY PRESSURE natural gas at standard altitude. Propane gas installa- Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c. tions require an orifice change to compensate for the Propane Gas Minimum: 11.0"...
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PRODUCT DESIGN This unit is configured for natural gas. The appropriate Natural Gas Capacity of Pipe In Cubic Feet of Gas Per Hour (CFH) manufacturer’s propane gas conversion kit, must be ap- Length Nominal Black P ip e S iz e plied for propane gas installations.
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PRODUCT DESIGN 9. Connect the furnace to the building piping by one GAS PIPING CHECKS of the following methods: Before placing unit in operation, leak test the unit and gas connections. – Rigid metallic pipe and fittings. – Semi-rigid metallic tubing and metallic fittings. Aluminum alloy tubing must not be used in exte- WARNING rior locations.
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PRODUCT DESIGN 3. Pressure drop in lines between regulators, and be- WARNING tween second stage regulator and the appliance. Pipe size will depend on length of pipe run and total load F THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A of all appliances.
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PRODUCT DESIGN ELECTRICAL CONNECTIONS Connect hot, neutral, and ground wires as shown in the wiring diagram located on the unit’s blower door. Line polarity must be observed when making field connec- WARNING tions. Line voltage connections can be made through either the right or left side panel.
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PRODUCT DESIGN 24 VOLT HUMIDIFIER Heating Heating/Cooling Room The yellow wire connected to the I.D. Blower pressure Room Thermostat Thermostat switch is powered anytime the pressure switch is closed and provides 24 VAC humidifier control. Remove the yel- low wire and connect the supplied brown jumper wire to the pressure switch terminal.
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PRODUCT DESIGN Upflow furnaces with air delivery of less than 1800 CFM: A return air filter is not supplied with the furnace. The installer must supply a means of filtering all of the re- Use one side return or one bottom return ductwork con- turn air.
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PRODUCT DESIGN NORMAL SEQUENCE OF OPERATION COUNTERFLOW FILTER INSTALLATION This furnace has provisions for the installation of return air OWER filters at the counterflow top return. The furnace will 1. 115 VAC power applied to furnace. accommodate the following filter sizes depending on cabinet 2.
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PRODUCT DESIGN DIP S “2 STG” WITCH IS SET TO POSITION OOLING The normal operational sequence in sequence is as fol- The normal operational sequence in cooling mode is as lows: follows: • R and W thermostat contacts close, initiating a •...
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PRODUCT DESIGN TwinComfort™ Configuration & Operation TwinComfort™ This furnace is capable of the following heating modes: • Single Stage (Factory Setting) • Modified Two-Stage > Fixed 5-Min. Low Stage > Auto Time (1-12 Min.) Low Stage To change from the factor single-stage operation, adjust the dipswitches on the ignition control as follows: HEAT OFF SECOND...
SYSTEM OPERATION HEATING - Abnormal Operation 4. Pressure Switch Stuck Open. If, after the induced draft blower is energized, the pressure switch does The following presents the probable causes of question- not close within 5 minutes, the control will go into able furnace operation and how to fix them.
TROUBLESHOOTING A/GMH8, GDH8, ADSH8 ROUBLESHOOTING HART Associated Associated Associated Corrective Action Corrective Action Associated Associated Associated Fault Fault Fault Possible Causes Possible Causes Cautions and Cautions and Cautions and Symptoms of Abnormal Symptoms of Abnormal Symptoms of Abnormal Corrective Action Fault Fault Fault...
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A/GMH8, GDH8, ADSH8 TROUBLESHOOTING ROUBLESHOOTING HART Fault Fault Fault Symptoms of Symptoms of Symptoms of Cautions Cautions Cautions Associated Associated Associated Corrective Action Corrective Action Corrective Action Possible Causes Possible Causes Possible Causes Description(s) Description(s) Description(s) Abnormal Operation Abnormal Operation Abnormal Operation LED Code LED Code...
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POLARIZATION AND PHASING INCOMING POWER As more and more electronic's are introduced to the Heat- METER READS METER READS ing Trade, Polarization of incoming power and phasing 120 VOLTS 0 VOLTS of primary to secondary voltage on transformers becomes more important. VOLT / OHM VOLT / OHM Polarization has been apparent in the Appliance industry...
MAINTENANCE WARNING HIGH VOLTAGE ISCONNECT POWER BEFORE SERVICING OR INSTALLING THIS UNIT. ULTIPLE POWER SOURCES MAY BE PRESENT. AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. Maintenance CAUTION Improper filter maintenance is the most common cause F YOU MUST HANDLE THE ITNITOR, HANDLE WITH CARE.
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MAINTENANCE TEST EQUIPMENT INDUCED DRAFT AND CIRCULATION BLOWERS Proper test equipment for accurate diagnosis is as es- The bearings in the induced draft blower and circulator sential as regular hand tools. blower motors are permanently lubricated by the manu- facturer. No further lubrication is required. Check mo- The following is a must for every service technician and tor windings for accumulation of dust which may cause service shop.
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MAINTENANCE With propane gas, no unit gas valve regulator is used; Let's assume the local gas utility has stated that the however, the second stage supply line pressure regula- calorific value of the gas is 1,025 BTU per cubic foot. tor should be adjusted to give 11"...
SERVICING 10 Thousand 1 Thousand 100 Thousand Quarter CUBIC FEET Foot Foot GAS RATE -- CUBIC FEET PER HOUR Size of Test Dial Size of Test Dial Seconds Seconds for One for One Revolution Revolution cu/ft cu/ft cu/ft cu/ft cu/ft cu/ft cu/ft cu/ft...
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SERVICING Service Problem 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 S-3A •...
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SERVICING SERVICE NUMBERS CHECKING VOLTAGE ....................50 CHECKING WIRING ....................50 S-3A THERMOSTAT AND WIRING ..................50 S-3B HEATING ANTICIPATOR .................... 50 CHECKING TRANSFORMER AND CONTROL CIRCUIT ............51 S-10 CAPACITANCE CHECK ................... 51 S-15 CHECKING CAPACITOR ..................... 51 S-16 CHECKING AIR CIRCULATOR BLOWER MOTOR (PSC) ............
SERVICING S-1 CHECKING VOLTAGE 3. If any wires must be replaced, replace with AWM, 105°C. 2/64 thick insulation of the same gauge or its equivalent. WARNING CHECKING THERMOSTAT, WIRING AND ANTICIPATOR HIGH VOLTAGE ISCONNECT POWER BEFORE SERVICING OR S-3A THERMOSTAT AND WIRING CHANGING ANY ELECTRICAL WIRING.
SERVICING The anticipator is a part of the thermostat and if it 2. Remove the thermostat low voltage wires at the should fail for any reason, the thermostat must be re- furnace integrated control module terminals. placed. Some thermostats have a cycle rate adjust- With Power On (and Door Interlock Switch closed): ment switch to set cycles per hour.
SERVICING Two quick ways to test a capacitor are a resistance and 2. Discharge the capacitor on (PSC) motors. Disconnect a capacitance check. Refer to the next two figures for the motor wire leads from its connection point at proper meter connections for the resistance and capaci- the integrated ignition control module and capaci- tance testing of the capacitor.
SERVICING 4. Consult proper tables for the quantity of air. If the total external static pressure exceeds the mini- mum or maximum allowable statics, check for closed dampers, registers, undersized and/or oversized poorly SUPPLY laid out duct work. SUPPLY CUTAWAY OF DUCTWORK TO EXPOSE COIL RETURN INCLINED...
SERVICING Location of Primary Limit Testing Primary Limit Control Primary Limit Control Location S-301 CHECKING AUXILIARY LIMIT CONTROL (80% Upflow Furnace Shown, Counterflow Similar) Automatic Reset Auxiliary Limit Located in Blower Style 1 drawing illustrates the Primary Limit used on Scroll the 80% furnaces.
SERVICING S-302 CHECKING FLAME ROLLOUT CONTROL WARNING A temperature activated manual reset control is mounted to the manifold assembly on 80% furnaces, HIGH VOLTAGE ISCONNECT POWER BEFORE SERVICING OR INSTALLING THIS UNIT. ULTIPLE POWER SOURCES MAY BE PRESENT. AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
SERVICING 6. After completing check and/or replacement of in- duced draft motor, reinstall burner compartment door. 7. Turn on electrical power and verify proper unit op- eration. VOLT / OHM METER S-304 CHECKING GAS VALVE (Redundant) A combination redundant operator type gas valve which RES ET provides all manual and automatic control functions re- BUT TON...
SERVICING S-306 CHECKING ORIFICES S-307 CHECKING GAS PRESSURE No resizing should be attempted until all factors are Gas Supply Pressure Measurement taken into consideration such as inlet and manifold gas pressure, alignment, and positioning, specific gravity and BTU content of the gas being consumed. CAUTION The only time resizing is required is when a reduction in firing rate is required for an increase in altitude.
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SERVICING GAS LINE WARNING GAS SHUTOFF VALVE HIGH VOLTAGE ISCONNECT ELECTRICAL POWER AND SHUT OFF GAS SUPPLY BEFORE SERVICING OR INSTALLING THIS UNIT. GAS LINE ULTIPLE POWER SOURCES MAY BE PRESENT. AILURE TO TO FURNACE DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. Gas Manifold Pressure Measurement and Adjust- OPEN TO ATMOSPHERE...
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SERVICING c. Turn ON the gas supply. Set dip switch #2 set to High Fire Regulator “two stage”& dip switch #3 set to “5 minutes” Regulator Adjust Vent d. Turn on power and close thermostat “R” and “W” contacts to provide a call for heat. The burners will light in high fire and go to low fire after sev- eral seconds.
S-308 CHECKING HOT SURFACE IGNITOR 4. Remove the pressure control hose from the control and interconnect with an inclined manometer as 120V Silicon Nitride Igniter - Amana® and Goodman® shown in the following figures. Brand H model furnaces use a 120V silicon nitride ig- niter for ignition.
SERVICING S-312 CHECKING FOR DELAYED IGNITION Induced Draft Blower Pressure Switch Delayed ignition is a delay in lighting a combustible Pressure Switch mixture of gas and air which has accumulated in the Hose combustion chamber. 1/4" Tee Furnace design makes this extremely unlikely unless safety controls have been by-passed or tampered with.
SERVICING 1. Check for 120 volts from Line 1 (Hot) to Line 2 (Neu- PARK PARK EAC-H LINE-H XFMR-H tral) at the ignition control. No voltage, check the door switch connections and wire harness for conti- nuity. 2. Check for 24 volts from W to C terminal on the igni- tion control.
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SERVICING 5. The Integrated Ignition controls will have 1 to 4 mi- cro-amps. If the micro-amp reading is less than the WARNING minimum specified, check for high resistance wiring HIGH VOLTAGE connections, sensor to burner gap, dirty flame sen- ISCONNECT POWER BEFORE SERVICING OR sor, or poor grounding.
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SCHEMATICS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. TYPICAL SCHEMATIC ADSH80/GDH8 ____X* MODEL FURNACES WR 50M56-289 INTEGRATED IGNITION CONTROL This schematic is for reference only.
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SCHEMATICS HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. CIRCULATOR BLOWER ELECTRONIC INDUCER AIR CLEANER HEAT HEAT PARK COOL ROLLOUT SWITCH XFMR...
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WIRING DIAGRAMS ADSH80/AMH8_ /GDH8 WARNING:DISCONNECT POWER BEFORE INTEGRATED HUMIDIFIER CONTROL MODULE SERVICING.WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED. XFMR (6) GND (8) 24 VAC MVC (9) HUMIDIFIER VALVE MVH (12) MVL (2) ID BLOWER PRESSURE AUXILIARY SWITCH LIMIT CONTROLS PS (10) AUTO 5 MIN...
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