! IMPORTANT: ! WARNING:
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1. cedure on the part of the user etc Some specific examples of service calls which cannot be included in warranty payments are 1 Converting the furnace to use another type of gas 2 Repairing duct work in the home found to be faulty 3 Correcting wiring problems in the electrical circuit supplying the furnace 4 Resetting circuit breakers blown fuses or other switches 5 Correcting problems due to improper gas supply pressure to the furnace 6 Providing instructional training on how to light and operate the furnace 7 Correcting any problems caused by installa tion of an air conditioner heat pump or other air comfort devices 8 Revising installation of the furnace flue as sembly Adjusting or calibrating of thermostat Removing any construction debris which has fallen into flue system 9 10 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 fur nace If you have any questions about the warranty information contact your NORDYNE distributor FREQUENCY OF MAINTENANCE MAINTENANCE ITEM BEGINNING OF END OF EACH EACH HEATING SEASON HEATING SEASON MONTHLY VERIFY FURNACE AREA IS FREE OF COMBUSTIBLE MATERIALS X X X VERIFY COMBUSTION AND VENTILATION AIR IS NOT RESTRICTED X X xX VERIFY N2. Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or move by hand do not try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion Do not use this appliance if any parthas been under water Immedi ately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been underwater A B Cet appareil m nager n a pas de veilleuse Il est dot d un syst me d allumage automatique Ne pas essayer d allumer le br leur manuellement AVANT USAGE Attention une possible odeur de gaz surtout au niveau du plancher o les gaz les plus lourds ont la tendance de se concentrer EN CAS D ODEUR DE GAZ Nemettre en marche aucun appareil lectrique Ne toucher aucun commutateur lectrique ne pas employer let l phone Quitterleb timentimm diatementet avertir la compagnie du gaz en utili sant le t l phone d un voisin __Ad faut de la compagnie du gaz avertir le service des pompiers Enfoncer ou faire tourner le robinet gaz la main seulement Ne jamais utiliser d outils S iln est pas possible de faire tourner ou d enfoncer le robinet la main ne pas essayer de le r parer Faire appel un sp cialiste Forcer ou tenter de r parer le robinet pourrait tre l origine d une explosion ou d un incendie
3. Failure to follow safety warnings ex actly could result in dangerous opera tion serious injury death or property damage Improper servicing could result in dan gerous operation serious injury death or property damage e Before servicing disconnectall elec trical power to furnace When servicing controls label all wires prior to disconnecting Recon nect wires correctly e Verify proper operation after servic ing A WARNING To avoid possible equipment damage fire or death the following instruc tions must be observed regarding fur nace location combustion air require ments and operation procedures Inspect the furnace installation to ensure that the vent and combustion air intake pipes have been installed properly ABOUT YOUR CENTRAL FURNACE SYSTEM NORDYNE has been involved in the design of products for the manufactured home industry since the first manufactured home or trailer was built NORDYNE originated the sealed combustion system which separates the furnace com bustion system from the living area of the home and is now a standard for the manufactured home industry NORDYNE engineers developed the first cen tral heating system and the first central air conditioner for manufactured homes NORDYNE is dedicated to bringing to its cus tomers the finest heating and cooling comfort possible NORDYNE constantly seeks to further refine its products to continuously provide ex cep
4. with soap water and allow to dry 6 Place filter and retainer wire in door Filter Front Door Rear View Figure 2 Filter Installation 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 com partment should be cleaned monthly during the heating and cooling seasons to remove any dirt and lint that may have accumulated in the compartment or on the blower and motor Buildup of dirt and lint on the blower and motor can create excessive loads on the motor re sulting in higher than normal operating tem peratures and possible shortened service life Burner Maintenance Check the burner flames at the start of every heating season Set the thermostat to a temperature setting above the room temperature Remove the front door from the furnace close the door switch see Figure 1 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 3 In a properly adjusted burner assembly the flame bends up 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 compon
5. O SIGNS OF PHYSICAL DETERIORATION OF THE FURNACE X xX X VERIFY NO OBSTRUCTIONS OR RESTRICTIONS IN VENT OR CHIMNEY X X VERIFY NO HOLES OR CRACKS IN VENT PIPE X X VERIFY NO CORROSION IN VENT PIPE X X VERIFY THAT HORIZONTAL VENT PIPES SLOPE UPWARDS AWAY FROM FURNACE X X VERIFY BURNER FLAME X CLEAN OR REPLACE FILTER S X CLEAN BLOWER COMPARTMENT X CLEAN BURNER ASSEMBLY X Table 1 Maintenance Table FOR YOUR SAFETY READ BEFORE OPERATING POUR VOTRE S CURIT LIRE AVANT L EMPLOI WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life ATTENTION L inobservation de ces instructions peut entra ner un incendie ou une explosion pouvant causer des dammages votre propri t votre personne ou la mort A This appliance does not have a pilot Itis equipped with an ignition device which automatically lights the burner Do nottry to light the burner by hand BEFORE OPERATING smellall around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS Do nottry to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from aneighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department
6. User s Information Maintenance and Service Manual M3RL Series Furnaces WARNING FIRE OR EXPLOSION HAZARD Failure to follow safety warnings 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 e Do not try to light any appliance e Do not touch any electrical switch do not use any phone in your building e Leave the building immediately Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions lf you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier ADVERTISSEMENT RISQUE D INCENDIE OU D EXPLOSION Le non respect des avertissements de s curit pourrait entrainer des blessures graves la mort ou des dommages mat riels Ne pas entreposer ni utiliser de l essence ni d autres vapeurs ou liquides inflammables dans le voisinage de cet appareil ni de tout autre appareil QUE FAIRE S IL Y A UNE ODEUR DE GAZ e Ne pas tenter d allumer aucun appareil eNe toucher aucun interrupteur lectrique n utiliser aucun t l phone dans le b timent e Evacuer l immeuble imm diatement e Appeler imm diatement le fournisseur de gaz en employant le t l phone d un voi
7. ance if service is to be performed Remove the control access door panel upper door if two door model Move the gas control knob clockwise W to OFF Do not use force See Figure 2 Replace the control access door panel upper door if two door model 7080830 ATTENTION Lire d abord la liste des mesures de s curit cidessus Mettre le thermostatala position minimale Couper le courant lectrique quim ne al appareil Cetappareil m nager tant dot d un syst me d allumage automatique ne pas essayer d allumer le br leur manuellement Retirerle panneau volet d acc s de commande panneau sup rieur s il s agit d un mod le deux panneaux Faire tourner le robinet gaz dans le sens des aiguilles d une montre AN pour l amener sur la position OFF Arr t Voir Figure 2 Attendre cing 5 minutes pour s assurer de la dissipation du gaz En cas d odeur ARR TER LE PROC D Suivre les instructions ci dessus Section B En l absence de toute odeur de gaz avancer l tapesuivante Faire tourner le robinet gaz dans le sens inverse des aiguilles d une montre pour l amener sur la position ON Marche Voir Figure 2 Remettre le panneau volet d acc s de commande en place panneau sup rieurs ils agitd un mod le deux panneaux Rebrancherl appareilsurler seau lectrique Ajusterlethermostat la position d sir e Sil appareil ne fonctionne pas suivre les Di
8. ents in the burner ves tibule are at high temperatures while the burners are operating Use cau tion to avoid personal injury Inspect the burners mounting brackets and all other parts in the vestibule for signs of deterio ration The burner vestibule should be vacu umed clean and inspected annually Open the door switch and replace the front door Burner Manifold Figure 3 Burner Inspection CAUTION Do not strike any of the internal elec trical components while vacuuming 6 Operating Instructions READ THE SAFETY INFORMATION ON PAGE 8 BEFORE OPERATING WARNING Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the furnace be fore shutting off the electrical supply ADVERTISSEMENT En cas de temperature 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 l alimentation lectrique These furnaces are equipped with roll out limit switch s a vent safety switch and a pres sure switch See Figure 1 The pressure switch verifies that the flame is receiving com bustion air If the flame is not drawn into the heat exchanger tube the roll out limit switch or flame sensor will shut the furnace down The vent safety switch shuts the furnace down if the vent becomes blocked or restricted Furnace Fails To Ope
9. furnace is installed or when insulation is added Some insulation materials may be combustible Do not use this furnace if any part has been under water Immediately call a qualified ser vice technician to inspect the furnace and to replace any part of the control system and any gas control which has been under water 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 com bustion 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 prod ucts of combustion to the outside from the exhaust vent If the furnace is operated with a restricted com bustion air supply the pressure switch will open turning off the gas supply to the burners See Figure 1 DO NOT install a jumper wire across this switch to defeat its function If this switch must be replaced use only authorized replacement parts from your authorized dis tributor If the furnace is operated with inadequate combustion air supply due to sooting of the heat exchanger or partial blockage of the vent or air
10. h as a fireplace insert stove etc Doing so may result in fire explosion personal injury carbon monoxide poisoning or property damage Use an air filter in the front door to maintain a clean heat exchanger 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 com bustion products outdoors Atthe beginning and end of each heating season inspect the outdoor vent terminal closely with a flashlight to deter mine if any of the conditions listed under the following warning exist 5 Maintenance Proper maintenance is most importantto achieve the best performance from this furnace and should be performed by a qualified service tech nician 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 flam mable vapors and liquids in the vicinity of the furnace Annually inspect the furnace ductwork and vent system for signs of physical deterioration Change or replace the air filters monthly during any period when the circulating blower is operating regularly Alwa
11. intake pipe the flame roll out control 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 If the flame roll out control opens again after once reset DO NOT install a jumper wire across this switch to defeat its function DO NOT reset the control without identifying and correcting the fault con dition which caused the control to trip If this switch must be replaced use only authorized replacement parts from your authorized dis tributor Air openings in warm air registers and return air grilles must not be restricted CAUTION Combustion air must not be drawn from occupied spaces To maximize heat exchanger life the combus tion air must be 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 For M3 models the return air opening is located at the front of the furnace 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 circulating air ductwork must not be connected to any other heat pro ducing device suc
12. llest d conseill d utiliser cet appareil en contact prolong avec l eau Faire inspecter ou remplacer toute commande par un technicien qualifi si un des syst mes de contr le du gaz s est trouv sous l eau OPERATING INSTRUCTIONS QE DE D EMPLOI STOP Read the safety information above on this label Set the thermostatto the lowest setting Turn off all electrical power to the appliance The appliance s ignition device automatically lights the burner Do not try to light burner by hand Remove the control access door panel upper door if two door model Move the gas control knob clockwise W to OFF See Figure 2 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Follow B in above information If you don t smell gas go to the next step Move the gas control knob counterclockwise WN to ON See Figure 2 Replace the control access door panel upper door if two door model fl 10 Turn onallelectricalpower E To Knob opiny tothe appliance 11 Turn thethermostatto a i desired setting Figure 2 12 Ifthe appliance will not operate follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier TO TURN OFF GAS TO APPLIANCE Set the thermostatto the lowest setting Turn off all electrical power to the appli
13. rate If the furnace does not operate check the following 1 Is the thermostat operating properly 2 Is the front door in place 3 Is the furnace disconnect closed 4 Has the circuit breaker tripped or fuse blown 5 Is the gas turned on 6 Is the filter dirty or plugged 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 Fig ure 1 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 in the installa tion Follow the instructions To Turn Off Gas To the Appliance located in these instructions or on the door of the furnace Contact a qualified serviceman to identify and repair the problem MANUFACTURER WARRANTY OWNER RESPONSIBILITIES It is the sole responsibility of the homeowner to make certain the gas furnace has been cor rectly set up and adjusted to operate properly NORDYNE warrants this furnace to be free from defects in material or workmanship for a period of one year A warranty certificate with full details is included with this document How ever NORDYNE will not be responsible for any costs found necessary to correct problems due to improper setup improper installation furnace adjustments improper operating pro
14. rectives d arr t cidessous et appeler le technicien de service DIRECTIVES D ARRET Mettre le thermostat la position minimale D brancherl appareil en pr vision de la r paration Retirer le panneau volet d acc s de commande panneau sup rieur s ils agit d un mod le deux panneaux Faire tourner le robinet gaz dans le sens des aiguilles d une montre FN pour l amener sur la position OFF Arr t Ne pas forcer Voir Figure 2 Remettre le panneau volet d acc s de commande en place panneau sup rieur s il s agit d un mod le deux panneaux EFFICIENCY RATING CERTIFIED ama oraion wo NORDYNE 7080830 Specifications andillustrations subject to change without notice andwithoutincurring obligations Printedin U S A 03 02
15. sin Respecter la lettre les instruc tions du fournisseur de gaz e Si personne ne r pond appeler le ser vice des incendies L installation et l entretien doivent tre effectu s par un installateur qualifi un organisme de service ou le fournisseur de gaz 7 S gt SS gt KE SS SS Ss SS SS SS S_ no CI Cn 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 appli ance 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 recommenda tions given If these suggestions don t eliminate your problem call your NORDYNE Servicing Contractor Service PRO Any additions changes or conversions required in order for the appliance to satis factorily meet the application needs must be made by a qualified installer service agency or the gas supplier using factory specified and approved parts M3 Downflow Furnace A CT At oO PL oi 1 Door Assembly 12 2 Filter Inside Door 13 3 Blower Assembly 14 4 Control Board 15 5 Pressure Switch 16 6 Flame Rollout Switch 17 7 J Trap Hard Tube 18 8 Low Voltage Transformer 19 9 In Line Drain Assembly 20 10 Front Header Box 21 11 Vent Safety Swi
16. tch 22 r D LL 66 bb amp eo 3 Igniter Assembly Burner View Port Main Limit Switch Coil Cabinet Assembly Optional Flame Sensor On Burner Box Gas Valve Switch Blower Door Blower Inducer Orifice In Burner Box Aux Limit Burner Box Figure 1 Location of Major Components 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 appliance and create hazards for you Please read this manual carefully to familiarize yourself with operation maintenance and safety procedures for this furnace A regular service and maintenance schedule should be established to ensure 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 chimney have not been tested and have not been in cluded in the design certification of this furnace We the manufacturer can not and will not be responsible for injury or damage caused by the use of such untested and or uncertified devices accessories or components WARNING ELECTRICAL SHOCK FIRE OR EX PLOSION HAZARD
17. tional comfort Follow the instructions in this booklet carefully and this appliance will provide many years of superior performance If you wish to cool your home automatically with a central air conditioning system investigate the excellent NORDYNE cooling systems available from your heating and cooling contractor These systems are designed to work best with your NORDYNE furnace and have been carefully engineered to deliver optimal performance when mated with NORDYNE manufactured home furnaces NORDYNE also offers water heaters fire places and ventilating systems specifically de signed for manufactured housing applications Ask your manufactured home retailer your heating and cooling contractor or your dis tributor for more information Write directly to the factory PO Box 46911 St Louis MO 63146 if you are unable to locate a source for NORDYNE manufactured housing products in your area 1 Furnace Location The furnace area and the vicinity of any other gas appliance must be kept clear and free of combustible materials gasoline and other flam mable 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 fur nace area when the
18. ys replace the doors on the furnace after servicing or cleaning changing the filters Do not operate the furnace with out all doors and covers in place except to check burner operation Avoid operating the furnace when win dows 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 appli ances WARNING Never operate the furnace without a filter in place Dust and lint in the re turn air can build up on the internal components resulting in a loss of ef ficiency equipment damage and pos sible fire Air Filter An air filter is supplied with the furnace as shipped from the factory The filter must be removed and cleaned monthly during the heating season to ensure proper furnace operation The filter is easily cleaned with soap water or with vacuum cleaner New or newly renovated homes may require more frequent changing until the construction dust has been removed Always replace the filter with a filter of the same size and type as the filter being removed 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 To clean or replace the filters proceed as follows See Figure 2 1 Turn furnace electrical supply to OFF 2 Remove furnace main door 3 Release filter retainer wire 4 Pull out filter 5 Vacuum or wash filter
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