Nordyne Residential Gas Furnaces User's Manual
Contents
1. A regular service and maintenance schedule should be established to insure efficient and safe operation of the furnace See Section 5 for maintenance procedures and schedules Devices attached to the flue or vent for the purpose of reducing heat loss up the chim ney have not been tested and have not been included in the design certification of this furnace We the manufacturer can not and will not be responsible for injury 1 Safety Information The furnace area and the vicinity of any other gas appliance must be kept clear and free of combustible materials gasoline and other flammable vapors and liquids Do not store or use flammable items such as paint varnish or strippers in the vicinity of the furnace Do not use the furnace closet or area next to the furnace as a storage area This area must be kept clear clean and free of lint The furnace must also be kept clear of loose or exposed insulation materials Examine the furnace area when the furnace is installed or when insulation is added Some insulation materials may be combustible For proper and safe operation the furnace needs air for combustion and ventilation Do not block or obstruct air openings on the furnace or any air openings where the furnace may be installed including any surrounding spaces Should the gas supply fail to shut off or if overheating occurs shut off gas valve to the furnace before shutting off electrical supply Do not use this furnac2. of the furnace The NOx reduction inserts are located in the first pass of the top portion of the heat exchanger When the burners are operating the flame should extend through the center of the NOx reduction inserts The flame color should be blue however some light yellow streaks may occur on the outer portions of the flame Inspect the burners mounting brackets and all other parts in the vestibule for signs of deterioration The burner vestibule should be vacuumed clean and inspected annually CAUTION Do not strike any of the internal electrical components while vacuuming 6 Operating Instructions READ THE SAFETY INFORMATION ON THE FOLLOWING PAGE BEFORE OPERATING A WARNING Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the furnace before shutting off the electrical supply ADVERTISSEMENT En cas de temp rature excessive ou s il est impossible de couper l alimentation en gaz fermer le robinet manuel d alimentation en gaz du g n rateur d air chaud avant de couper I alimentation lectrique These furnaces are equipped with roll out limit switch s a vent safety switch and a pressure switch See Figures 1 2 3 and 4 The pressure switch verifies that the flame is receiving combustion air If the flame is not drawn into the heat exchanger tube the roll out limit switch or flame sensor will shut the furnace
3. Ignitor Not Shown Vent Safety Switch In Line Drain Flame Sensor Not Low Voltage Assembly Shown Transformer Burner View Port Primary Gas Valve Supply Air Limit Switch Front Header Box Secondary Gas Valve Circulating Air Blower Combustion Air Flame Roll out Switch s Assembly Not Shown Intake Not Shown Pressure Switch on Downflow Model on Upflow Model Vent Pressure Switch Induced Draft Blower Exhaust Vent Control Board Condensate Drain Not Shown on Blower Door Switch Tube Downflow Model Figure 3 Furnace Parts Identified 80 AFUE Two Stage Models Upflow Horizontal Furnace Ignitor Blower Door 11 Flame Sensor Switch Supply Air Limit Switch Gas Valve Vent Assembly 12 Blower Assembly Flame Roll out Low Voltage 13 Induced Draft Switch s Transformer Pressure Switch Burner Assembly Conirol Board Figure 4 Furnace Parts Identified Blower GENERAL INFORMATION This furnace has been designed and built to provide many years of safe and dependable home comfort providing it is properly installed and maintained With regular maintenance this furnace will operate satisfactorily year after year Abuse improper use and or improper mainte nance can shorten the life of the furnace and create hazards for you Please read this manual carefully to familiarize yourself with operation maintenance and safety procedures for this furnace
4. specific examples of service calls which cannot be included in warranty payments are 1 Repairing duct work in the home found to be faulty 2 Correcting wiring problems in the electrical circuit supplying the furnace 3 Re setting circuit breakers or other switches 4 Correction of problems due to improper gas supply pressure to the furnace 5 Providing instructional training on how to light and operate the furnace 6 Furnace problems caused by installation of an air conditioner heat pump or other air comfort devices 7 Revising installation of the vent assembly 8 Adjusting or calibrating of the thermostat Carefully review these responsibilities with your dealer service company or gas supplier so there will be no misunderstanding at a later time Read Your Warranty Please read your limited warranty completely It contains valuable information about your furnace If you have any questions about the warranty information contact your distributor 11 EFFICIENCY RATING CERTIFIED ama CERTIFIED 7082220 7082220 Replaces 7081670 Specifications and illustrations subject to change without notice and without incurring obligations Printed in U S A 01 03
5. H Upflow Horizontal Furnace Downflow Furnace Ignitor Vent Assembly 14 Induced Draft Flame Sensor Upflow Only Blower Gas Valve Vent Switch 15 Combustion Tube Flame Roll out Low Voltage w insulation Switch s Transformer Downflow Only Pressure Switch Burner Assembly 16 Vent Transition Control Board Supply Air Limit Assembly 7 Blower Door Switch Downflow Only Switch Blower Assembly Figure 1 Furnace Parts Identified 90 AFUE Downflow Condensing Furnace Ignitor Not Shown Blower Door Switch Condensate Drain 2 Flame Sensor Not Vent Safety Switch Tube Shown Low Voltage In Line Drain Gas Valve Transformer Assembly Flame Roll out Supply Alr Limit Burner View Port Switch s Switch Front Header Box Pressure Switch Circulating Air Combustion Air Vent Pressure Blower Assembly Intake Switch 93 Only Induced Draft Exhaust Vent Control Board Blower Figure 2 Furnace Parts Identified 90 AFUE Two Stage Models 20 17 SE Susanna Upflow Horizontal Furnace Models
6. RICTIONS IN VENT OR CHIMNEY VERIFY NO HOLES OR CRACKS IN VENT PIPE VERIFY NO CORROSION IN VENT PIPE VERIFY THAT HORIZONTAL VENT PIPES SLOPE UPWARDS AWAY FROM FURNACE VERIFY BURNER FLAME CLEAN OR REPLACE FILTER S CLEAN BLOWER COMPARTMENT CLEAN BURNER ASSEMBLY X X X Table 1 Maintenance Table 5 Maintenance Proper maintenance is most important to achieve the best performance from this furnace and should be performed by a qualified service technician Follow the maintenance schedule see Table 1 and the following instructions for years of safe trouble free operation Do not place combustible materials on or against the furnace cabinet Do not store gasoline or any other flammable vapors and liquids in the vicinity of the furnace Annually inspectthe furnace ductwork and vent system for signs of physical deterioration e Changeor replace the air filters monthly during any period when the circulating blower is operating regularly Alwaysreplace the doors onthe furnace after servicing or cleaning changing the filters Do not operate the furnace without all doors and covers in place except to check burner operation e Avoid operating the furnace when windows and doors are open e Be sure that the thermostat is properly installed and is not being affected by drafts or heat from lamps or other appliances Air Filter s Air filter s are not supplied with the furnace as shi
7. Set the thermostat to a temperature setting above the room temperature Remove the top door from the furnace and visually inspect the burner through the view hole to make sure that the flame is drawn into the center of the heat exchanger tube See Figure 5 In a properly adjusted burner assembly the flame bends down and to the right at the end of the heat exchanger tube and the end of the flame will be out of sight around the bend The flame color should be blue however some light yellow streaks may occur on the outer portions of the flame CAUTION Some components in the burner vestibule are at high temperatures while the burners are operating Use caution to avoid personal injury Burner Manifold Figure 5 Burner Inspection A WARNING Do not operate your furnace if you find any of the following conditions Such conditions may allow toxic fumes to escape into your home e Obstructions or restrictions in the vent pipe and or chimney Holes or cracks in the vent pipe e Visible corrosion inthe vent pipe Horizontal vent pipes that do not slope upward lfany oftheaboveconditionsare found in the vent pipe call a qualified service technician to install new vent pipe For 80 upflow and downflow models only Burner Maintenance NOx If the second or eighth character of the model number is an N the furnace has factory installed NOx reduction inserts The inserts reduce the NOx emissions
8. User s Information Manual Residential Gas Furnaces FOR YOUR SAFETY A WARNING FIRE OR EXPLOSION HAZARD Failure to follow safety precautions exactly could result in serious injury death or property damage Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions e If you cannot reach your gas supplier call the fire department e Extinguish any open flame Installation and service must be performed by a qualified installer service agency or the gas supplier AVERTISSEMENT RISQUE D INCENDIE OU D EXPLOSION Le non respect des consignes de s curit pourrait entra ner des blessures graves la mort ou des dommages mat riels Ne pas entreposer ni utiliser de essence ni d autres vapeurs ou liquides inflammables dans le voisinage de cetappareil ni detoutautre appareil QUE FAIRE S UL Y A UNE ODEUR DE GAZ Nepas tenter d allumer aucun appareil e Ne toucher a aucun interrupteur lectrique n utiliser aucun t l phone dans le b timent Appeler imm diatement le fournisseur de gaz en employant le t l phone d un voisin Respecter a la lettre les instructions du fournis
9. down The vent safety switch shuts the furnace down if the vent becomes blocked or restricted Furnace Fails To Operate If the furnace does not operate check the following Is the thermostat operating properly Are the blower door s in place Is the furnace disconnect closed Has the circuit breaker tripped or fuse blown 5 Is the gas turned on 6 Is the filter dirty or plugged S22 If the combustion and circulating air blowers are operating and items 1 through 6 have been checked without identifying the cause of the problem press the red reset buttons on the vent safety and the roll out limit switches See Figures 1 2 3 and 4 IMPORTANT If the furnace operates after depressing the reset button on the vent limit or roll out limit it is an indication of a potentially serious problem inthe installation Contact a qualified serviceman to identify and repair the problem E aa ee ee MANUFACTURER WARRANTY OWNER RESPONSIBILITIES It is the sole responsibility of the homeowner to make certain the gas furnace has been correctly set up and adjusted to operate properly The Manufacturer warrants the furnace to be free from defects in material or workmanship for the warranty period However the Manufacturer will not be responsible for any costs found necessary to correct problems due to improper set up improper installation furnace adjustments improper operating procedure on the part of the user etc Some
10. e if any part has been under water A flood damaged furnace is extremely dangerous Attemps to use the furnace can resultin fire or explosion A qualified service agency should be contacted to inspect the furnace and to replace all gas controls control system parts electrical parts that have been wet or the furnace if deemed necessary Familiarize yourself with the controls that shut off the gas and electrical power to the furnace If the furnace is to be shut down for an extended period of time turn off both the gas and electrical power For your safety always turn off both the gas and electrical power before performing service or maintenance on the furnace 2 Combustion Air Supply A furnace needs an adequate supply of combustion and ventilation air for proper and safe operation Follow the installation instructions included with the furnace to properly vent air to the combustion air inlet and exhaust the products of combustion to the outside from the exhaust vent For 90 and 93 Models If the furnace is operated with a restricted combustion air supply the pressure switch will open turning off the gas supply to the burners See Figures 2 and 3 DO NOT install a jumper wire across this switch to defeat its function If this switch must be replaced use only the replacement part specified in the Replacement Parts List For 80 Models If the furnace is operated with inadequate combustion air supply the flame roll out cont
11. mbustion from entering the living space The floor or platform on which the furnace is mounted must provide sound physical support of the furnace with no gaps cracks or sagging between the furnace and floor or platform The return air and circulating air ductwork must not be connected to any other heat producing device such as a fireplace insert stove etc Doing so may result in fire explosion personal injury carbon monoxide poisoning or property damage Use a type high velocity air filter in the return air duct to maintain a clean heat exchanger A WARNING Failure to prevent products of com bustion from being circulated into the living space can create potentially hazardous conditions including car bon monoxide poisoning that could result in personal injury or death 4 Vent System The furnace must always be connected to an approved vent pipe to carry the furnace combustion products outdoors At the beginning and end of each heating season inspect the outdoor vent terminal closely with a flashlight to determine if any of the conditions listed under the following warning exist MAINTENANCE ITEM VERIFY FURNACE AREA IS FREE OF COMBUSTIBLE MATERIALS BEGINNING OF EACH HEATING SEASON HEATING SEASON MONTHLY REQ N OF MAIN NAN END OF EACH VERIFY COMBUSTION AND VENTILATION AIR IS NOT RESTRICTED VERIFY NO SIGNS OF PHYSICAL DETERIORATION OF THE FURNACE VERIFY NO OBSTRUCTIONS OR REST
12. pped from the factory The installer must provide a high velocity filter and rack in the return air duct adjacent to the furnace or in a return air grille to the furnace The filter s must be removed and cleaned monthly during the heating season to ensure proper furnace operation New or newly renovated homes may require more frequent changing until the construction dust has been removed A WARNING Never operate the furnace withouta filter in place Dust and lint in the return air can build up on the internal components resulting in a loss of efficiency equipment damage and possible fire Always replace the door s on the furnace after servicing or cleaning changing the filters Do not operate the furnace without the door s in place Lubrication The bearings in the circulating air blower motors used in these furnaces are pre lubricated and sealed at the factory No further oiling of the bearings is required for the life of the motor Blower Compartment The blower compartment should be cleaned monthly during the heating and cooling seasons to remove any dirt and lint that may have accumulated in the compartmentor on the blower and motor Build up of dirt and lint on the blower and motor can create excessive loads on the motor resulting in higher than normal operating temperatures and possible shortened service life Burner Maintenance Check the burner flames at the start of every heating season
13. rol switch located above the burners may open turning off the gas supply to the burners The flame roll out control is a manually resettable device See Figure 1 and 4 DO NOT install a jumper wire across this switch to defeatits function DO NOT reset the control without identifying and correcting the fault condition which caused the control to trip If this switch must be replaced use only the replacement part specified in the Replacement Parts List Air openings in warm air registers and return air grilles must not be restricted CAUTION Combustion air must not be drawn from a corrosive atmosphere To maximize heat exchanger life the combustion air mustbe free of chemicals which form corrosive acidic compounds in the combustion gases Some examples of these chemicals are chlorine fluorine and sulphur Some common sources of these chemicals are detergents bleaches aerosol sprays cleaning solvents and a wide variety of commercial and household products 3 Return Air Supply In applications where the supply ducts carry heated air to areas outside the space in which the furnace is installed the return air must be delivered to the furnace by duct s sealed to the furnace casing These duct s must be full size and without interruption in the spaces outside of where the furnace is installed The return air duct connection s must be physically sound and sealed to the furnace casing to prevent products of co
14. seur de gaz Si personne ne r pond appeler le service des incendies L installation et l entretien doivent tre effectu s par un installateur qualifi un organisme de service ou le fournisseur de gaz IMPORTANT Read this owner information thoroughly before attempting to operate or maintain this furnace to become familiar with the capabilities and use of your heating appliance Keep this with literature on other appliances where you have easy access to it in the future If a problem occurs check the instructions and follow the recommendations given If the suggestions do not eliminate your problem call your NORDYNE Servicing Contractor Service PRO Any additions changes or conversions required in order for the appliance to satisfactorily meet the application needs must be made by a qualified installer service agency or the gas supplier using factory specified and approved parts 80 AFUE Ignitor Flame Sensor Not Shown Gas Valve Flame Roll out Switch s Pressure Switch Control Board Blower Door Swiich s Exhaust Adapter Low Voltage Transformer Burner Assembly Supply Air Limit Switch Blower Assembly Induced Draft Blower Vent Transition Upflow Horizontal Furnace 80 AFUE 12 5 Eir C
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