USER’S INFORMATION, MAINTENANCE AND SERVICE …

1 272442-UUM-B-1211 user S INFORMATION, MAINTENANCE AND SERVICE MANUALHIGH EFFICIENCYCOMMERCIAL BELT DRIVE SERIESMODELS: GY8S160E30UH21 (Single Stage Upflow /Horizontal)The manufacturer recommends that the user read all sec-tions of this manual and keep the manual for future refer-ence. SECTION I: user S furnace area must be kept clear and free of combustible mate-rials, gasoline and other flammable vapors and materials may be combustible. The furnace must bekept free and clear of insulating materials. The furnace area mustbe examined when installed in an attic or other insulated space orwhen insulation is added to be sure that the insulation material hasbeen kept away from the furnace needs air for combustion in order to operate properlyand safely. Do not block or obstruct air openings on the furnace,air openings to the area where the furnace is installed, or spacesaround the the instructions exactly as shown on the OPERATINGINSTRUCTION LABEL or the Start-up and Shutdown Instructionson Page 3 of this manual when lighting the furnace or turning thefurnace the gas supply fail to shut off or if overheating occurs, shutoff the gas valve to the furnace before shutting off the not use this furnace if any part has been under water.

2 A flood-damaged furnace is extremely dangerous. Attempts to use the fur-nace can result in fire or explosion. A qualified SERVICE agencyshould be contacted to inspect the furnace and replace all gascontrols, control system parts, electrical parts that have been wetor the furnace if deemed OR EXPLOSION HAZARD - Failure to follow safetywarnings exactly could result in serious injury, death, or prop-erty damage. Do not store or use gasoline or other flammablevapors and liquids in the vicinity of this or any otherappliance. 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 (including cell phone) in your building. Leave the building immediately. 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 depart-ment. Installation and SERVICE must be performed by a quali-fied installer, SERVICE agency or the gas information Go to website at click on contact , then click on contact form and follow the instructions.

3 Contact us by mail:York InternationalConsumer Relations5005 York DriveNorman, OK 73069 TABLE OF CONTENTSCONTACT information .. 1 user S information .. 1 SAFETY .. 1 INSTRUCTIONS FOR EXAMINING THE FURNACE INSTALLATION .. 2 HOW YOUR GAS FURNACE WORKS .. 3 START-UP AND SHUTDOWN INSTRUCTIONS .. 3 Read the Instructions Below Before Trying to Start the Furnace .. 3 Operating Instructions: .. 3To Turn Off the Appliance: .. 3 FURNACE user MAINTENANCE .. 4 Air Filters .. 4 Removing the Air Filters .. 4 Motor Lubrication .. 5 SERVICE AND MAINTENANCE manual .. 5 SAFETY SECTION .. 5 FURNACE MAINTENANCE SECTION .. 5 FURNACE CLEANING SECTION ..6 Burner Removal/Cleaning ..6 Cleaning the Heat Exchanger ..6 SEQUENCE OF OPERATION ..6 Continuous Blower ..6 Intermittent Blower ..6 Heating Cycle ..6 Hot Surface Ignition System ..7 TROUBLESHOOTING ..7 FURNACE CONTROL DIAGNOSTICS ..7 DIAGNOSTIC FAULT CODE STORAGE AND RETRIEVAL ..8 REPLACEMENT PARTS LIST.

4 9 FIELD INSTALLED ACCESSORIES - NON-ELECTRICAL ..10 REPLACEMENT PART CONTACT information ..10 WIRING DIAGRAM ..11 LIMITED WARRANTY ..12272442-UUM-B-12112 Unitary Products ..Store flammable materials of any kind near your fur-nace. Gasoline, solvents, and other volatile liquids should bestored only in approved containers outside your home. Thesematerials vaporize easily and are extremely ..Store cleaning materials near your furnace. Materialssuch as bleaches, detergents, powdered cleansers, etc., cancause corrosion of the heat exchangers.. Use the area around your furnace as a storage areafor items which could block the normal flow of air. This flow of air isrequired for ventilation of the various furnace FOR EXAMINING THE FURNACE INSTALLATIONIt is the owner s responsibility to ensure that an annual inspection of theentire heating portion of the unit is made by a qualified SERVICE the furnace as outlined below in steps 1 - 6 before eachheating season.

5 Use Figure 3 for visual the heat exchanger, vent pipe, combustion air passages,vent connectors and chimney to be sure they are clear and free the vent pipe making sure it is firmly in place, that itslopes slightly upward and is physically sound without holes andall of the connections are the return-air duct connections to make sure they arephysically sound, sealed to the furnace casing, and the ducts ter-minate outside the space containing the the furnace casing making sure the physical support issound without sagging, cracks or gaps. Examine the furnace basemaking sure it is physically sound without cracks, gaps or saggingand has a good the furnace casing for obvious signs of the burner flames to make sure they are in good adjust-ment. Refer to the pictorial sketch shown in Figure 2 as a compari-son to the actual flame. FIGURE 1: Component LocationsFIRE OR EXPLOSION HAZARDThis furnace is designed and approved for use with Nat-ural Gas and (LP) Propane Gas ONLY.

6 DO NOT BURNANY LIQUID FUEL OR SOLID FUEL IN THIS any unapproved fuel will result in damage to thefurnace heat exchanger, which could result in Fire, Per-sonal Injury, and/or Property PIPEPRESUURESWITCHSILICONETUBEMOTORPULLE YGAS VALVEFLAMESENSORINDUCED DRAFTASSEMBLYINDUCED DRAFTMOTORLIMITSWITCHIGNITORMANIFOLDPIPE SAFETY SHUTOFFSWITCHCONTROLBOARDFLUECOLLARELECT RICALJUNCTION BOXLIMITCONTROLBLOWERSHAFTBLOWERHOUSINGF AN BELTFANPULLEY FIGURE 2: Burner Flame DrawingBLUE CONE PORTION OF FLAME SHOULDENTER HEAT EXCHANGER TUBE FIGURE 3: Furnace Examination Checkpoints4 EXAMINEFURNACECASING6534316 EXAMINERETURN AIRDUCTCONNECTIONREMOVEPANELTO EXAMINEBURNERFLAMESEXTERNAL HEAT EXCHANGER INTERNALVENT COMBUSTION AIR PIPE. MUSTREMOVE PANEL TO ENTIREFURNACE CASINGSHOWN IN ALLDRAWINGSEXAMINERETURN AIRDUCTCONNECTION(side or bottom)REMOVEPANELTO EXAMINEBURNERFLAMESEXAMINE EXTERNALVENT PIPEEXAMINEFURNACECASING272442-UUM-B-121 1 Unitary Products Group3 HOW YOUR GAS FURNACE WORKSYour furnace is a very easy appliance to take for granted.

7 Season afterseason, it sits there in your home, keeping you warm and this reason, you may never have given much thought to the wayyour furnace operates. In order to get the safest and most efficient oper-ation from your furnace, you should understand how your furnace doesits you set your thermostat to provide more heat in your home, youare starting the heating cycle of the furnace. First, the inducer motorstarts to purge the heat exchanger of any remaining gases. Next, thehot surface ignitor glows and after a warm-up period the gas valveopens and ignition occurs. A short time later, the blower starts and dis-tributes the warm air throughout the home. When the temperature set-ting on your thermostat is reached, the gas valve closes, the mainburners are turned off, and the blower continues to run until the remain-ing warm air in the system is distributed. When the blower stops, theheating cycle has AND SHUTDOWN INSTRUCTIONSRead the Instructions Below Before Trying to Start the appliance does not have a pilot.

8 It is equipped with an ignitiondevice which automatically lights the burner. Do not try to light theburner by OPERATING; smell all around the appliance area forgas. Be sure to smell next to the floor because some gas isheavier than air and will settle on the only your hand to push the gas control switch to the on posi-tion. Never use tools. If the switch will not operate by hand, don ttry to repair it, call a qualified SERVICE technician. Force orattempted repair may result in a fire or not use this appliance if any part has been under water. Imme-diately call a qualified SERVICE technician to inspect the applianceand to replace any part of the control system and any gas control,which has been under ! Read the safety information the thermostat to the lowest off all electric power to the furnace gas control switch to the OFF position. Do not force. SeeFigure five (5) minutes to clear out any gas. If you then smell gas,STOP!

9 Follow B in the safety information above. If you don tsmell gas, go to next gas control switch to the ON position. Do not force. SeeFigure burner access on all electric power to the Set thermostat to the desired setting. Burner will light, which maytake 30-60 After three (3) trials for ignition, if the appliance will not operate fol-low the instructions, TO TURN OFF THE APPLIANCE and callyour SERVICE technician or gas Turn Off the the thermostat to lowest off all electric power to the appliance if SERVICE is to be burner access gas control switch to the OFF position. See Figure burner access : The spring-loaded safety cut-off switch, mounted under theblower deck will automatically cut off the electrical power supplyto the furnace when the blower panel is removed. As a safetyprecaution, all electrical power and the gas supply to the furnaceshould be turned off before you do not follow these instructions exactly, a fire orexplosion may result causing property damage, personalinjury, and/or loss of overheating occur, or the gas valve fail to shut off,turn the external manual gas valve in the gas supply line tothe furnace to the off position and let the furnace cool offbefore shutting off the electrical power supply.

10 Refer toFigure 5. FIGURE 4: Gas Valve - White Rodgers FIGURE 5: Upflow Gas Piping FIGURE 6: Horizontal Gas PipingINLETWRENCHBOSSINLETPRESSUREPORTON OFFON/OFF SWITCH(Shown in ON position)MAIN REGULATORADJUSTMENTOUTLETOUTLETPRESSUREP ORTVENT PORTEXTERNAL MANUALSHUTOFF VALVETO GASSUPPLYTO GASSUPPLYGROUNDED JOINT UNIONMAY BE INSTALLEDINSIDE OR OUTSIDE VALVEGAS VALVEGAS BURNERSDRIPLEG272442-UUM-B-12114 Unitary Products GroupFURNACE user MAINTENANCEE very time the filters are changed the following items should be visuallyinspected: Check combustion air and vent pipe for blockage or leakage. Check all components to be sure they are in good condition andthat there are no obvious signs of deterioration. Check the drain lines to make sure there are no cracks or leaks. Check for dirt or lint on any surfaces or on components. Do not tryto clean any of the surfaces or components. Cleaning of the fur-nace and its components must be done by a qualified SERVICE , during the inspection of your furnace, you find any of the followingconditions: Excessive amounts of dust and lint on components.