York All Residential Multi-position Gas Furnaces(33” Models) User's Information Manual

Contents

York All Residential Multi-position Gas Furnaces(33” Models) User's Information Manual Manual pdf 3 page image

356486-UUM-K-0613Johnson Controls Unitary Products 31. Examine the heat exchanger, vent pipe, combustion air passages,vent connectors and chimney to be sure they are clear and free ofobstructions.2. Examine the vent pipe making sure it is firmly in place, that it slopesslightly upward and is physically sound without holes and all of theconnections are secure.3. Examine the return-air duct connections to make sure they arephysically sound, sealed to the furnace casing, and the ducts termi-nate outside the space containing the furnace.4. Examine 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 seal.5. Examine the furnace casing for obvious signs of deterioration.6. Examine the burner flames to make sure they are in good adjust-ment. Refer to the pictorial sketch shown in Figure 7 as a compari-son to the actual flame.7. Examine and replace external air filters as needed to make surethey are not blocked, and proper airflow is provided to the furnace.8. Examine any installed accessories or system components such asevaporator coils to insure proper operation, drainage of conden-sate, and that there is no water leakage or damage to the furnaceor any components.START-UP AND SHUTDOWNINSTRUCTIONSRead the Instructions Below Before Trying to Start theFurnace!HOW YOUR GAS FURNACE WORKSYour furnace is a very easy appliance to take for granted. Season afterseason, it sits there in your home, keeping you warm and comfortable.For 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 job.When 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 ended.1. This appliance does not have a pilot. It is equipped with an ignitiondevice which automatically lights the burner. Do not try to light theburner by hand.2. BEFORE OPERATING; smell all around the appliance area for gas.Be sure to smell next to the floor because some gas is heavier thanair and will settle on the floor.3. Use 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’t tryto repair it, call a qualified service technician. Force or attemptedrepair may result in a fire or explosion.4. Do not use this appliance if any part has been under water. Immedi-ately call a qualified service technician to inspect the appliance andto replace any part of the control system and any gas control, whichhas been under water.FIGURE 5: Component Location - 97% Modulating PSC Models FIGURE 6: Component Location - 97% Modulating ECM ModelsVent PipePressureSwitchManifoldPipeRolloutSafety SwitchGas ValveFlame SensorDraft InducerAssemblyIgnitorSafetyDoor Switch ControlBoardElectricalJunction BoxBlowerTransformerCapacitorCondensatePanSilicone TubePSC MOTORLimit Switch(Behind gas valve) Vent PipePressureSwitchManifoldPipeRolloutSafety SwitchGas ValveFlame SensorDraft InducerAssemblyLimit Switch(Behind gas valve)IgnitorSafetyDoor Switch ControlBoardElectricalJunction BoxBlowerTransformerCondensatePanSilicone TubeECM MOTORPower FactorChoke (Notused on allmodels)FIGURE 7: Burner Flame Drawing (Upflow Configuration Shown)Blue Cone Portion of Flame ShouldEnter Heat Exchanger TubeIf you do not follow these instructions exactly, a fire or explosion mayresult causing property damage, personal injury, and/or loss of life.