Lennox International Inc. EL280DF Furnace User Manual
Contents
1. USER S INFORMATION LENNOX MANUAL 2012 Lennox Industries Inc Dallas Texas USA E L 2 80 D F SERIES GAS FURNACE 506897 01 08 2012 A WARNING Improper installation adjustment alteration service or maintenance can cause property damage personal injury or loss of life Installation and service must be Tehnica performed by a licensed professional installer or Publications equivalent a service agency or the gas supplier Litho U S A amp AWARNING 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 WHAT TO DO IF YOU SMELL GAS vapors and liquids in the vicinity of this or any Do not try to light any appliance other appliance Extinguish any open flames e Do not touch any electrical switch do not use any qualified installer service agency or the gas phone in your building supplier e Leave the building immediately Installation and service must be performed by a Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department 08 12 506897 01 EL280DF Parts Identification BLOWER MOTOR COMBUSTION AIR INDUCER HEAT EXCHANGER ASSEMBLY BURNER BOX ASSEMBLY SURELIGHT INTEGRATED CONTROL COMBUSTION AIR INDUCER PRESSURE SWITCH ACCESS PANEL2. correctly Verify proper operation after servicing A CAUTION To ensure proper operation a licensed professional service technician or equivalent should check the burner flame and conduct a combustion analysis annually Annually before heating season inspect furnace venting system vent cap heat exchanger and burners for corro sion deterioration or deposits of debris Remove any ob structions Page 5 Inspect the furnace venting system to make sure it is in place physically sound and without holes corrosion or blockage The vent connector must be correctly posi tioned and sloped upward The vent connector must be physically sound without holes or excessive corrosion Inspect the furnace return air duct connection The duct must be sealed to the furnace and it must terminate outside the space containing the furnace Inspect the physical support of the furnace to guarantee that it is sound The support must not sag and must not have cracks or gaps around the base of the furnace There must be a seal between the furnace base and the support During a seasonal check the service technician will in spect the indoor blower and the burner flames along with the venting system Blower Check blower wheel for any debris and clean it if neces sary The blower motor is pre lubricated for extended bear ing life No further lubrication is needed AWARNING The blower access panel must be securely in place when
3. GAS VALVE FIGURE 1 NOTE This manual is the property of the homeowner and must be left with the equipment user Notice to Homeowner This furnace is equipped with safety devices that protect you and your property If one or more of these devices is Page 2 activated furnace operation will stop If your home is left unattended for an extended period of time equipment op eration must be checked periodically If this is not possible the water supply to the house should be shut off and the pipes should be drained This will prevent problems associ ated with a NO HEAT condition frozen pipes etc A CAUTION Before attempting to perform any service or mainte nance turn the electrical power to unit OFF at the disconnect switch NOTICE Any additions changes or conversions required in order for the appliance to satisfactorily meet the ap plication needs must be made by a licensed profes sional installer or equivalent using factory speci fied and approved parts Safety Instructions 1 Keep the furnace area clear and free of combustible material gasoline and other flammable vapors and liquids If it is installed in an insulated area the furnace must be kept free of insulating material Insulating ma terial may be combustible 2 DO NOT obstruct air flow to unit Unit must receive an unobstructed flow of combustion and ventilating air DO NOT block or obstruct air openings on the furnace or air openings to th
4. ch odorant used with LP propane gas can lose its scent In case of a leak LP propane gas will settle close to the floor and may be difficult to smell An LP propane leak detector should be installed in all LP applications Do not attempt to bleed the gas lines of air Call your local gas provider AWARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or death BEFORE LIGHTING smell all 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 The gas valve on the EL280DF is equipped with a gas con trol switch Use only your hand to move the gas control switch Never use tools If the switch will not move by hand do not try to repair it Call a licensed professional service technician or equivalent Force or attempted re pair may result in a fire or explosion Placing the EL280DF furnace into operation EL280DF units are equipped with a SureLight ignition system Do not attempt to manually light burners on these furnaces Each time the thermostat calls for heat the burn ers will automatically light The ignitor does not get hot when there is no call for heat on units with the SureLight ignition system Operating the Gas Valve Figures 2 1 STOP Read the safety information at the beginning of this section 2 Set the thermostat to the lowest setting 3 Turn
5. condensate on windows in side your house visibly burnt components or unusual dirt or rust accumulations on the vent pipe or in the unit If you experience headache nausea fatigue or dizzi ness the cause could be exposure to carbon monoxide gas This is often misdiagnosed as the flu because symptoms are similar If you suffer from flu like symp toms that are exaggerated at home but seem to sub side while you are away from the house exposure to carbon monoxide could be the cause Your vigilance may pay off in early detection of a problem before either personal injury or property damage occurs Do not hesitate to contact a qualified service technician as an investment in your well being AWARNING Do not use this furnace if any part has been under water A flood damaged furnace is extremely dan gerous Attempts to use the furnace can result in fire or explosion Immediately call a licensed pro fessional service technician or equivalent to in spect the furnace and to replace all gas controls control system parts and electrical parts that have been wet or to replace the furnace if deemed neces sary Page 6 Planned Service You should expect a service technician to check the follow ing items during an annual inspection Power to the unit must be shut off for the service technician s safety Fresh air grilles and louvers on the unit and in the room where the furnace is installed Must be open and unob structe
6. d to provide combustion air Burners Must be inspected for rust dirt or signs of water Vent pipe Must be inspected for signs of water damaged or sagging pipe or disconnected joints Unit appearance Must be inspected for rust dirt signs of water burnt or damaged wires or components Blower access door Must be properly in place and pro vide a seal between the return air and the room where the furnace is installed Return air duct Must be properly attached and provide an air seal to the unit Operating performance Unit must be observed during operation to monitor proper performance of the unit and the vent system Combustion gases Flue products must be analyzed and compared to the unit specifications Problems detected during the inspection may make it nec essary to temporarily shut down the furnace until the items can be repaired or replaced Pay attention to your furnace Situations can arise be tween annual furnace inspections that may result in unsafe operation For instance items innocently stored next to the furnace may obstruct the combustion air supply This could cause incomplete combustion and the production of car bon monoxide gas Repair Parts List The following repair parts are available through Lennox dealers When ordering parts include the complete furnace model number listed on the CSA International nameplate Example EL280DF110P60C 1 All service must be done by a li censed profe
7. e area in which the furnace is installed Take care to maintain established clear ances surrounding the furnace 3 DO NOT store chlorine or fluorine products near unit or introduce these products into the combustion air These products can cause furnace corrosion 4 DO NOT draw return air from a room where this fur nace or any other gas appliance ie a water heat er is installed When return air is drawn from a room a negative pressure is created in the room If a gas ap pliance is operating in a room with negative pressure the flue products can be pulled back down the vent pipe and into the room This reverse flow of the flue gas may result in incomplete combustion and the formation of carbon monoxide gas This toxic gas might then be distributed throughout the house by the furnace duct system A WARNING The blower door must be securely in place when the blower and burners are operating Gas fumes which could contain carbon monoxide can be drawn into the living space resulting in personal injury or death Page 3 Your furnace is a gas appliance It is critical that the gas supplied to the unit be completely burned to avoid the pro duction of carbon monoxide gas Complete combustion of the gas requires but is not limited to correct gas pressure and gas flow rate adequate combustion air and proper venting A WARNING Asphyxiation Hazard The exhaust vent for this furnace must be leak free and must be sec
8. lace the access panel A WARNING Do not set thermostat below 60 F 16 C in heating mode Setting thermostat below 60 F 16 C reduces the number of heating cycles Damage to the unit may occur that is not covered by the warranty EL280DF filters are installed external to the unit Filters should be inspected monthly Clean or replace the filters when necessary to ensure that the furnace operates prop erly Replacement filters must be rated for high velocity air flow Table 1 lists recommended filter sizes TABLE 1 Furnace Cabinet Width Side Return Bottom Return 14 1 2 16 X25 X1 1 14X25 X1 1 17 1 2 16 X 25 X 1 1 16 X 25 X 1 1 21 16 X25 X1 1 20 X 25 X 1 1 Maintenance A licensed professional service technician or equivalent should inspect the complete system each season heating and cooling The following maintenance procedures should only be conducted by a licensed professional ser vice technician or equivalent Do not attempt to service the unit in any way AWARNING ELECTRICAL SHOCK FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in dangerous operation serious injury death or property damage Improper servicing could result in dangerous opera tion serious injury death or property damage Before servicing disconnect all electrical power to furnace When servicing controls label all wires prior to dis connecting Take care to reconnect wires
9. off all electrical power to the unit 4 This furnace is equipped with an ignition device which automatically lights the burners Do not try to light the burners by hand 5 Remove the access panel 6 Move switch on gas valve to OFF Do not force See figure 2 Page 4 7 Wait five minutes to clear out any gas If you then smell gas STOP Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instruc tions If you do not smell gas go to next step 8 Move switch on gas valve to ON Do not force See figure 2 WHITE RODGERS GAS VALVE GAS VALVE SHOWN IN OFF POSITION FIGURE 2 9 Replace the upper access panel 10 Turn on all electrical power to to the unit 11 Set the thermostat to desired setting NOTE When unit is initially started steps 1 through 11 may need to be repeated to purge air from gas line 12 If the appliance will not operate follow the instructions Turning Off Gas to the Unit and call your service tech nician or gas supplier Turning Off Gas to the Unit A WARNING If overheating occurs or if gas supply fails to shut off shut off the manual gas valve to the appliance before shutting off electrical supply 1 Set the thermostat to the lowest setting 2 Turn off all electrical power to the unit if service is to be performed 3 Remove the upper access panel 4 Move switch on gas valve to OFF Do not force See figure 2 5 Rep
10. ssional installer or equivalent a service agency or the gas supplier Cabinet Parts Heating Parts Main access panel Flame Sensor Blower access panel Heat exchanger assembly Top Cap Gas manifold Control Panel Parts Combustion air inducer Transformer Gas valve Integrated control Main burner cluster Door interlock switch Main burner orifices Circuit Breaker Pressure switches Blower Parts Ignitor Blower wheel Primary limit control Blower housing Secondary limit Motor Flame rollout switch Motor mounting frame Blower housing cut off plate AWARNING The State of California has determined that this prod uct may contain or produce a chemical or chemicals in very low doses which may cause serious illness or death It may also cause cancer birth defects or re productive harm Page 7
11. the blower and burners are operating Gas fumes which could contain carbon monoxide can be drawn into living space resulting in personal inju ry or death Service Reminder Call your Lennox service technician if the unit will not oper ate Before calling always check the following to be sure service is required 1 Check that electrical disconnect switches are ON 2 Check room thermostat for proper setting 3 Replace any blown fuses or reset circuit breakers 4 Gas valve should be ON 5 Air filter should not be plugged which will limit air flow 6 Is gas turned on at meter 7 Is manual main shut off valve open Record the model and serial number of the furnace These numbers are on the unit nameplate which is located below the burners Serial Number Model Number Safety Precautions If you discover any of the following shut down your unit and contact a Lennox dealer for an inspection by a licensed professional service technician or equiva lent e If you repeatedly hear any new or unfamiliar sounds while your unit is operating there may be a problem For example poorly performing burners can produce unfa miliar noises If you smell any unusual odors your unit may be operat ing improperly For example units can give off unfamil iar odors if components are required to operate in ab normal conditions Look for visible signs of a malfunctioning unit Examples include unusual amounts of
12. urely connected to the furnace flue collar at all times For your safety and to fulfill the terms of the limited warranty a licensed professional service technician or equivalent must annually inspect this furnace and its vent system Exposure to carbon monoxide gas can cause personal inju ry and even death to all occupants including pets Any item that is powered by or gives off heat from a combustion pro cess including lawn mowers automobiles and fireplaces has the potential to produce carbon monoxide gas Because of this Lennox recommends the use of a carbon monox ide detector in your home even if you do not own gas appliances Reliable detectors are available at reasonable retail prices Contact your Lennox dealer for more details about this investment in your safety Your furnace is designed to meet standards set by nation al agencies and to operate safely when properly installed and maintained However the unit s performance can be greatly impacted by the individual installation and the op erating environment It is your responsibility to ensure that this appliance is maintained Proper maintenance is critical for your safety and the sat isfactory operation of the product Lennox strongly rec ommends annual inspection and maintenance of this appliance Contact your Lennox dealer for an inspection by a licensed professional service technician A DANGER Danger of explosion There are circumstances in whi
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