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INSTALLATION INSTRUCTIONSFOR*MVC8 & *CVC8 GAS FURNACE(CATEGORY I )Installer: Affix all manuals adjacent to the unit.These furnaces comply with requirements embodied in the American National Standard / National Standard of Canada ANSI Z21.47·CSA2.3 Gas Fired Central Furnaces.RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.ATTENTION INSTALLING PERSONNELAs a professional installer, you have an obligation to know the product better than the customer.This includes all safety precautions and related items.Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual.Pay special attention to all safety warnings. Often during installation or repair, it is possible to place yourselfin a position which is more hazardous than when the unit is in operation.Remember, it is your responsibility to install the product safely and to know it well enoughto be able to instruct a customer in its safe use.Safety is a matter of common sense.a matter of thinking before acting.Most dealers have a list of specific, good safety practices.follow them.The precautions listed in this Installation Manual are intended as supplemental to existing practices.However, if there is a direct conflict between existing practices and the content of this manual,the precautions listed here take precedence.NOTE: Please contact your distributor or our website listed belowfor the applicable Specification Sheet referred to in this manual.WARNINGTHE MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY INJURY ORPROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICEPROCEDURES. IF YOU INSTALL OR PERFORM SERVICE ON THIS UNIT, YOUASSUME RESPONSIBILITY FOR ANY PERSONAL INJURY OR PROPERTYDAMAGE WHICH MAY RESULT. MANY JURISDICTIONS REQUIRE ALICENSE TO INSTALL OR SERVICE HEATING AND AIR CONDITIONINGIOG-20129/20165151 San Felipe Suite 500 Houston, TX 77056www.goodmanmfg.com www.amana-hac.com 2011-2016 Goodman Manufacturing Company, L.P.is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.
Table of ContentsSAFETY CONSIDERATIONS . 4ADDITIONAL SAFETY CONSIDERATIONS . 5SHIPPING INSPECTION . 5ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS . 6TO THE INSTALLER . 6PRODUCT DESCRIPTION . 6FEATURES . 6PRODUCT APPLICATION . 6LOCATION REQUIREMENTS AND CONSIDERATIONS . 7CLEARANCES AND ACCESSIBILITY . 9INSTALLATION POSITIONS . 9HORIZONTAL INSTALLATION . 9FURNACE SUSPENSION . 9EXISTING FURNACE REMOVAL . 9THERMOSTAT LOCATION . 10COMBUSTION AND VENTILATION AIR REQUIREMENTS . 10EXTERIOR MASONRY CHIMNEYS . 11(CATEGORY I FURNACES ONLY) . 11CHECKLIST SUMMARY . 12CHECK 1 - PROPER CHIMNEY TERMINATION. . 12CHECK 2 - ANY SOLID OR LIQUID FUEL APPLIANCES VENTED INTO THIS CHIMNEY CHANNEL . 13CHECK 3 - CHIMNEY CROWN CONDITION. . 13CHECK 4 - DEBRIS IN CLEANOUT. . 13CHECK 5 - LINER CONDITION. . 13CHECK 6 - DILUTION AIR. . 14CHECK 7 - COMPLETE THE INSTALLATION. . 14FIX 1 - LINER TERMINATION . 14FIX 2 -CHANGE VENTING ARRANGEMENTS . 14FIX 3 - REBUILD THE CROWN . 15FIX 4 - RELINING . 15ELECTRICAL CONNECTIONS . 15WIRING HARNESS . 15115 VOLT LINE CONNECTIONS . 16JUNCTION BOX RELOCATION . 1624 VOLT THERMOSTAT WIRING . 17SINGLE-STAGE HEATING THERMOSTAT APPLICATION . 1724 VOLT DEHUMIDISTAT WIRING . 18FOSSIL FUEL APPLICATIONS . 18115 VOLT LINE CONNECTION OF ACCESSORIES (HUMIDIFIER AND ELECTRONIC AIR CLEANER) . 1824 VOLT HUMIDIFIER . 19AUXILIARY ALARM SWITCH . 19GAS SUPPLY AND PIPING . 19HIGH ALTITUDE DERATE . 20PROPANE GAS CONVERSION . 20GAS PIPING CONNECTIONS . 20UPFLOW INSTALLATIONS . 21COUNTERFLOW INSTALLATIONS . 21GAS PIPING CHECKS . 21PROPANE GAS TANKS AND PIPING . 22CIRCULATING AIR . 22CHECKING DUCT STATIC . 23FILTERS - READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCTWORK . 23UPRIGHT INSTALLATIONS . 23HORIZONTAL INSTALLATIONS . 24CIRCULATION AIR FILTERS . 24START-UP PROCEDURE AND ADJUSTMENT . 25HEAT ANTICIPATOR SETTING . 25FURNACE OPERATION . 252
Table of ContentsGAS SUPPLY PRESSURE MEASUREMENT . 26GAS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT . 27GAS INPUT RATE MEASUREMENT (NATURAL GAS ONLY) . 30TEMPERATURE RISE . 30CIRCULATOR BLOWER SPEEDS . 30BLOWER HEAT OFF DELAY TIMINGS . 32COMFORTNET SYSTEM . 32OVERVIEW . 32FOSSIL FUEL APPLICATIONS . 33CTK0* WIRING . 33COMFORTNET COMPATIBLE FURNACE WITH NON-COMFORTNET COMPATIBLE SINGLE-STAGE AIR CONDITIONER . 34COMFORTNET SYSTEM ADVANCED FEATURES . 34THERMOSTAT MENU . 34DIAGNOSTICS . 34FURNACE ADVANCED FEATURES MENUS (ACCESSED THROUGH COMMUNICATING THERMOSTAT) . 35NETWORK TROUBLESHOOTING . 36SYSTEM TROUBLESHOOTING . 36NORMAL SEQUENCE OF OPERATION . 36POWER UP . 36HEATING MODE . 36COOLING MODE . 38FAN ONLY MODE . 38OPERATIONAL CHECKS . 38SAFETY CIRCUIT DESCRIPTION . 38INTEGRATED CONTROL MODULE . 39PRIMARY LIMIT . 39AUXILIARY LIMIT . 39ROLLOUT LIMIT . 39PRESSURE SWITCHES . 39FLAME SENSOR . 39TROUBLESHOOTING . 39ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS . 39DIAGNOSTIC CHART . 39FAULT RECALL . 39FAULT CLEAR SEQUENCE: . 39RESETTING FROM LOCKOUT . 40MAINTENANCE . 40ANNUAL INSPECTION . 40FILTERS . 40BURNERS . 40INDUCED DRAFT AND CIRCULATOR BLOWERS . 41FLAME SENSOR (QUALIFIED SERVICER ONLY) . 41FLUE PASSAGES (QUALIFIED SERVICER ONLY) . 41BEFORE LEAVING AN INSTALLATION . 41REPAIR AND REPLACEMENT PARTS . 41TROUBLESHOOTING CHART . 42-46STATUS CODES . 47AIR FLOW DATA . 48DIP SWITCHES . 49*MVC8, *CVC8 WHITE RODGERS GAS VALVE WIRING DIAGRAM . 50*MVC8, *CVC8 HONEYWELL GAS VALVE WIRING DIAGRAM . 513
SAFETY CONSIDERATIONSWARNINGTO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPERINSTALLATION , ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE,REFER TO THIS MANUAL . FOR ADDITIONAL ASSISTANCE ORINFORMATION , CONSULT A QUALIFIED INSTALLER , SERVICER AGENCY ORTHE GAS SUPPLIER .Adhere to the following warnings and cautions when installing,adjusting, altering, servicing, or operating the furnace. To ensure proper installation and operation, thoroughly read thismanual for specifics pertaining to the installation and application of this product.This furnace is manufactured for use with natural gas. It maybe field converted to operate on L.P. gas by using the appropriate L.P. conversion kit listed in the PROPANE GAS/HIGH ALTITUDE INSTALLATIONS section of this manualWARNINGIF THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWEDEXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTYDAMAGE , PERSONAL INJURY OR LOSS OF LIFE.DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS ANDLIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE .WHAT TO DO IF YOU SMELL GAS: D O NOT TRY TO LIGHT ANY APPLIANCE. D O NOT TOUCH ANY ELECTRICAL SWITCH; DO NOT USE ANY PHONEIN YOUR BUILDING . IMMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR’ SPHONE. FOLLOW THE GAS SUPPLIER’S INSTRUCTIONS. IF YOU CANNOT REACH YOUR GAS SUPPLIER, CALL THE FIREDEPARTMENT.INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIEDINSTALLER, SERVICE AGENCY OR THE GAS SUPPLIER.Install this furnace only in a location and position as specifiedin LOCATION REQUIREMENTS & CONSIDERATIONS section and INSTALLATION POSITIONS section of this manual.Provide adequate combustion and ventilation air to the furnaceas specified in COMBUSTION & VENTILATION AIR REQUIREMENTS section of this manual.Combustion products must be discharged to the outdoors.Connect this furnace to an approved vent system only, as specified in Category 1 Venting section of this manual.Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections, as specified in GASSUPPLY AND PIPING section of this manual.WARNINGTHIS PRODUCT CONTAINS OR PRODUCES A CHEMICAL OR CHEMICALSAlways install a furnace to operate within the furnace’s intendedtemperature-rise range with a duct system which has externalstatic pressure within the allowable range, as specified on thefurnace rating plate and OPERATIONAL CHECKS section ofthese instructions.WHICH MAY CAUSE SERIOUS ILLNESS OR DEATH AND WHICH AREKNOWN TO THE STATE OF C ALIFORNIA TO CAUSE CANCER , BIRTHDEFECTS OR OTHER REPRODUCTIVE HARM .WARNINGWhen a furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space containingthe furnace, the return air shall also be handled by duct(s)sealed to the furnace casing and terminating outside the spacecontaining the furnace.HEATING UNIT SHOULD NOT BE UTILIZED WITHOUT REASONABLE,ROUTINE, INSPECTION , MAINTENANCE AND SUPERVISION . IF THEA gas-fired furnace for installation in a residential garage mustbe installed as specified in the LOCATION REQUIREMENTSAND CONSIDERATIONS section of this manual.MAYBE EXPOSED TO FREEZING TEMPERATURES AND WILL BE VACANT ,BUILDING IN WHICH ANY SUCH DEVICE IS LOCATED WILL BE VACANT,CARE SHOULD BE TAKEN THAT SUCH DEVICE IS ROUTINELY INSPECTED,MAINTAINED AND MONITORED . IN THE EVENT THAT THE BUILDINGALL WATER -BEARING PIPES SHOULD BE DRAINED , THE BUILDING SHOULDBE PROPERLY WINTERIZED , AND THE WATER SOURCE CLOSED . IN THEEVENT THAT THE BUILDING MAY BE EXPOSED TO FREEZINGThis furnace may be used as a construction site heater only ifcertain conditions are met. These conditions are listed in thePRODUCT APPLICATION section of this manual.TEMPERATURES AND WILL BE VACANT , ANY HYDRONIC COIL UNITSSHOULD BE DRAINED AS WELL AND , IN SUCH CASE , ALTERNATIVE HEATSOURCES SHOULD BE UTILIZED.WARNINGTO PREVENT POSSIBLE PROPERTY DAMAGE , PERSONAL INJURY ORDEATH DUE TO ELECTRICAL SHOCK , THE FURNACE MUST BE LOCATED TOPROTECT THE ELECTRICAL COMPONENTS FROM WATER .4
RISQUE D'EMPOISONNEMENT AU MONOXYDE DE CARBONEAdvertencia especial para la instalación de calentadores ó manejadorasde aire en áreas cerradas como estacionamientos ó cuartos de servicio.Las emisiones de monóxido de carbono pueden circular a travésdel aparato cuando se opera en cualquier modo.CO can cause serious illness including permanent braindamage or death.B10259-216Cette ventilation est nécessaire pour éviter le danger d'intoxicationau CO pouvant survenir si un appareil produisant du monoxydede carbone continue de fonctionner au sein de la zone confinée.El monóxido de carbono puede causar enfermedades severascomo daño cerebral permanente ó muerte.B10259-216Le monoxyde de carbone peut causer des maladies graves telles quedes dommages permanents au cerveau et meme la mort. B10259-216WARNINGWARNINGSHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT OFF,TO PREVENT PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION, THISFURNACE MUST BE CATEGORY I VENTED . DO NOT VENT USINGCATEGORY III VENTING.PROVISIONS MUST BE MADE FOR VENTING COMBUSTION PRODUCTSOUTDOORS THROUGH A PROPER VENTING SYSTEM . THE LENGTH OFFLUE PIPE COULD BE A LIMITING FACTOR IN LOCATING THE FURNACE.TURN OFF THE MANUAL GAS SHUTOFF VALVE EXTERNAL TO THEFURNACE BEFORE TURNING OFF THE ELECTRICAL SUPPLY.WARNINGPOSSIBLE PROPERTY DAMAGE , PERSONAL INJURY OR DEATH DUE TOFIRE, EXPLOSION , SMOKE, SOOT, CONDENSATION , ELECTRICAL SHOCKADDITIONAL SAFETY CONSIDERATIONSOR CARBON MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION,REPAIR OPERATION , OR MAINTENANCE OF THIS PRODUCT. WARNINGTO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPERINSTALLATION , ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE,REFER TO THIS MANUAL . FOR ADDITIONAL ASSISTANCE ORINFORMATION , CONSULT A QUALIFIED INSTALLER , SERVICER AGENCY ORTHE GAS SUPPLIER .This furnace is approved for Category I Venting only.Provisions must be made for venting combustionproducts outdoors through a proper venting system.The length of flue pipe could be a limiting factor inlocating the furnace.4. File the claim with the following support documents withina nine month statute of limitations. Original or certified copy of the Bill of Lading, orindemnity bond. Original paid freight bill or indemnity in lieu thereof. Original or certified copy of the invoice, showing tradeand other discounts or reductions. Copy of the inspection report issued by carrier’srepresentative at the time damage is reported to carrier.SHIPPING INSPECTIONAll units are securely packed in shipping containers testedaccording to International Safe Transit Association specifications. The carton must be checked upon arrival for externaldamage. If damage is found, a request for inspection by carrier’sagent must be made in writing immediately.The furnace must be carefully inspected on arrival for damageand bolts or screws which may have come loose in transit. Inthe event of damage the consignee should:1. Make a notation on delivery receipt of any visible damageto shipment or container.2. Notify carrier promptly and request an inspection.3. With concealed damage, carrier must be notified as soonas possible - preferably within five days.The carrier is responsible for making prompt inspection of damage and for a thorough investigation of each claim. The distributor or manufacturer will not accept claims from dealers for transportation damage.Keep this literature in a safe place for future reference.5
may be also installed as part of a “legacy” system using astandard 24 VAC thermostat.ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONSNOTE: Discharge body’s static electricity before touching unit.An electrostatic discharge can adversely affect electrical com- This product may also be installed with the ComfortNet thermostat and a non-ComfortNet compatible single stage air conponents.ditioning unit. However, this reduces the benefits of theUse the following precautions during furnace installation and ComfortNet system as the enhancements will only apply to theservicing to protect the integrated control module from dam- furnace.age. By putting the furnace, the control, and the person at thesame electrostatic potential, these steps will help avoid expos- PRODUCT APPLICATIONing the integrated control module to electrostatic discharge.This procedure is applicable to both installed and non-installed This furnace is primarily designed for residential home-heating(ungrounded) furnaces.applications. It is NOT designed or certified for use in mobile1. Disconnect all power to the furnace. Do not touch thehomes, trailers or recreational vehicles. Neither is it designedintegrated control module or any wire connected to theor certified for outdoor applications. The furnace must be incontrol prior to discharging your body’s electrostaticstalled indoors (i.e., attic space, crawl space, or garage areacharge to ground.provided the garage area is enclosed with an operating door).2. Firmly touch a clean, unpainted, metal surface of theThis furnace can be used in the following non-industrial comfurnaces near the control. Any tools held in a person’smercial applications:hand during grounding will be discharged.Schools, Office buildings, Churches, Retail stores,3. Service integrated control module or connecting wiringNursing homes, Hotels/motels, Common or office areasfollowing the discharge process in step 2. Use cautionnot to recharge your body with static electricity; (i.e., doIn such applications ,
adjusting, altering, servicing, or operating the furnace. To en-sure proper installation and operation, thoroughly read this manual for specifics pertaining to the installation and applica-tion of this product. This furnace is manufactured for use with natural gas. It may be field converted to operate on L.P. gas by using the appropri-
