York International DFAA, User'S Information, Maintenance And Service Manual

Page 1: ...eath or prop erty 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 FUEL OIL Do not try to light any appliance Turn off the electric switch Immediately call your service technician DO NOT start the furnace If the control reset button has been pushed more than one time the chamber may be flooded with oil ...

Page 2: ...ency Examine the furnace as outlined below in steps 1 6 before each heating season Use Figures 2 and 3 for visual reference 1 Examine the heat exchanger through a field installed access panel located on the supply air plenum Visually examine the exte rior sections of the vent combustion air piping and the connectors to be sure that they are physically sound without holes or exces sive corrosion 2 ...

Page 3: ...ot try to light the burner by hand 2 BEFORE OPERATING smell all around the appliance area for fuel oil Be sure to smell next to the floor because fuel oil is heavier than air and will settle on the base of the chamber Look for any oil leaks around the base of the furnace 3 Use only your hand to turn the manual oil line valve attached the pump to the on position Never use tools If the valve will no...

Page 4: ... you must do the following 1 Before proceeding be sure the area is well ventilated Follow instruction To turn off the appliance Check all metal parts and surfaces to be sure they have cooled to room temperature before you begin 2 Remove the louvered blower door by pulling on the indentated handles on both sides of the bottom of the door 3 Remove the air filter by sliding them down The air filter w...

Page 5: ...l safety lockout timing Check ignition system for proper operation Inspect the vent system for soot accumulation or other restriction Clean the appliance thoroughly according to the manufacturer s recommendations TABLE 1 Filter Sizes Blower Door Return inches cm 2 16 x 20 2 41 x 51 Make sure you DO NOT move the clip on weight on the indoor fan wheel when cleaning the wheel This weight is used to b...

Page 6: ...he connector tube assembly 6 Push the nozzle assembly in at the flare fitting end until the assembly is inside the burner housing Be sure to keep the flare end at a slight angle upwards to avoid dripping oil on the combus tion air fan below 7 Slide the nozzle assembly up and out of the burner assembly Take extra precautions with the electrodes when removing the nozzle assembly so the insulators do...

Page 7: ...coupling Do not force the pump shaft on to the coupling 22 Reinstall the nozzle assembly and tighten the assembly to the burner housing with the splined nut 23 Reconnect the connector tube assembly and tighten the flare fit ting 24 Check the transformer spring contacts If worn replace 25 Push the transformer up and forward checking to make sure the springs are touching the electrode rods 26 Put th...

Page 8: ... 15 seconds of the primary control it will turn off the oil burner There will be 3 retries before the primary con trol will lockout If the flame is lost for 2 seconds during the 15 second stabilization period the ignition transformer is energized and a retry operation begins If flame is not detected within 15 seconds during the retry the primary control will go into recycle mode Once the primary c...

Page 9: ...p and oil valve closes TROUBLESHOOTING AND MAINTENANCE IMPORTANT Due to the potential hazard of line voltage only a trained experienced service technician should perform the troubleshooting pro cedures IMPORTANT This control contains no field serviceable parts Do not attempt to take it apart Replace entire control if operation is not as described To completely troubleshoot an oil burner installati...

Page 10: ... mary control by using the following equipment 1 Screwdriver 2 Voltmeter 0 to 150 VAC range 3 Insulated jumper wire with both ends stripped 4 Follow the oil burner operation and oil burner control troubleshoot ing steps in Tables 5 and 6 TABLE 4 Cad Cell Resistance When Sensing Flame Flashes Cad Cell Resistance in Ohms 1 Less than 400 2 More than 400 and less than 800 3 More than 800 and less than...

Page 11: ... motor Flashes indicator light at 1 2 second on 1 2 second off Depress reset button to return to power up sequence c When flame is detected Carry Over period begins 5 Control enters Ignition Carry Over period continues to spark for 10 to 30 seconds a Turns on indicator light b If flame is lost and lockout time has not expired R7184 returns to Trial for Ignition period c If flame is lost and lockou...

Page 12: ...oltage should be 120 VAC 3 Check indicator light with burner off no call for heat no flame Indicator light is on Cad cell or controller is defective sees external light or connections are shorted Go to step 4 Indicator light is off Go to step 5 4 Shield cad cell from external light Indicator light turns off Eliminate external light source or permanently shield cad cell Indicator light stays on Rep...

Page 13: ...onnect line voltage power and close line switch d Start burner Burner locks out Go to Step 11 Burner keeps run ning System is okay 11 Check cad cell a Disconnect line voltage power and open line switch b Remove existing cad cell and replace with new cad cell c Disconnect all wires from ther mostat terminals to be sure there is no call for heat d Reconnect line voltage power and close line switch e...

Page 14: ...107273 UUM C 0306 14 Unitary Products Group SECTION III WIRING DIAGRAM OIL FIRED FURNACE FIGURE 13 Wiring Diagram for DFAA Oil Fired Furnace ...

Page 15: ...107273 UUM C 0306 Unitary Products Group 15 FIGURE 14 Wiring Diagram for DFAH Oil Fired Furnace ...

Page 16: ...ase of malfunction For this reason it is never practical to assume that the furnace will operate unattended for a long period of time especially if there is a possibility of damage to your property because of freezing So if you plan to be away from home arrange for someone to check your house every day DESCRIPTION This furnace shall be installed in the downflow position Figure 17 shows a typical m...

Page 17: ...front panels Follow the operating instructions to place the furnace in operation Observing Burner Operation 1 Observe burner to make sure it ignites Observe color of flame On natural gas the flame will burn blue with appreciably yellow tips On Propane gas a yellow flame may be expected If flame is not the proper color call a qualified service technician for service 2 Let furnace heat until blower ...

Page 18: ...e some gas is heavier than air and will settle on the floor C Use only your hand to push the gas control switch to the on position Never use tools If the switch will not operate by hand don t try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part has been under water Immediately call a qualified servi...

Page 19: ...ed with dust they can be brushed and cleaned with a vac uum cleaner If the blower cannot be properly cleaned without removing it from the furnace then call a qualified service agency Only a qualified service agency can perform this service Motor Lubrication The motors in these furnaces are permanently lubricated and do not require periodic oiling WARRANTY AND RESPONSIBILITIES It is the sole respon...

Page 20: ... wrench boss on the gas valve when removing or installing this piping Refer to Figure 18 3 Unplug the black and white line voltage wires at the quick connec tor terminals Identify and note the location of all leads for ease of reinstallation 4 Unplug the red and black wires that are connected to the T T terminals on the primary control These wires can be disconnected at the quick connect terminals...

Page 21: ...107273 UUM C 0306 Unitary Products Group 21 SECTION VI WIRING DIAGRAM GAS CONVERSION BURNER FIGURE 20 Wiring Diagram for DFAA Gas Conversion Burner ...

Page 22: ...107273 UUM C 0306 22 Unitary Products Group FIGURE 21 Wiring Diagram for DFAH Gas Conversion Burner ...

Page 23: ...THE 30 SECOND PREPURGE AND 8 SECOND SAFE START CHECK CYCLE 3 CHECK FOR 120 VAC AT GAS VALVE TERMINALS REPLACE PRIMARY IGNITION CONTROL CHECK ELECTRICAL WIRING AND CONNECTIONS BE SURE LEADS ARE ON CORRECT GAS VALVE TERMINALS 4 MAKE SURE LEADS ARE ON THE CORRECT GAS VALVE 5 CHECK FOR CORRECT MANIFOLD PRESSURE 6 REPLACE GAS VALVE OK OK OK OK OK NO NO NO OK OK OK NO NO NO OK OK OK OK OK OK 1 CHECK THE...

Page 24: ...GNITION ELECTRODE ROD 6 REPLACE PRIMARY IGNITION CONTROL REPLACE PRIMARY IGNITION CONTROL CHECK THE FLAME SENSING CIRCUIT FOR 1 GROUNDED FLAMEROD 2 DAMAGE TO FLAMEROD LEAD INSULATION NOTE MAKE SURE THE FLAMEROD CIRCUIT AND OR PRIMARY CONTROL IS MOISTURE FREE 1 RESET CONTROL MOTOR STARTS AFTER 30 SECOND PREPURGE CYCLE AND 8 SECOND SAFE START CHECK MOTOR CONTINUES TO RUN BUT FLAME IS NOT ESTABLISHED...

Page 25: ...CYCLE FLAME IS ESTABLISHED A STABLE MICROAMPERE CURRENT OF 8 OR MORE IS REQUIRED FOR DEPENDABLE OPERATION 4 MICROAMPERE READING IS LESS THAN 8 OR UNSTABLE 1 CHECK FOR PROPER THERMOSTAT INSTALLATION AND LOCATION 2 CHECK THERMOSTAT HEAT ANTICIPATOR FOR CORRECT SETTING 3 CHECK LOW VOLTAGE CIRCUIT FOR BAD WIRING ELECTRICAL CONNECTIONS AND OR SWITCHES 4 CHECK LINE VOLTAGE CIRCUIT FOR BAD WIRING ELECTRI...

Page 26: ...06 26 Unitary Products Group SECTION VII OIL BURNER REPAIR PARTS LIST 1 3 2 2 3 2 12 9 11 10 8 7 6 5 4 13 HEAT COOL DFAA HEAT ONLY DFAH CONTROL BOX DETAIL 15 1 14 16 17 DFAA066BBTA DFAH066BBSA DFAA084BBTA DFAH084BBSA ...

Page 27: ...witch System 7681 3301 7681 3301 1 5 Transformer 115 24V 40 VA 1 6 Filter 16x20x1 2 Req d 1214 2511 1214 2511 1 7 Panel Door Upper 7900 7631 7900 7631 1 8 Panel Door Lower Short 7900 7671 7900 7671 1 9 Motor 024 31948 000 024 31949 000 1 10 Plug Connector 025 21192 000 025 21192 000 1 11 Capacitor Run 7 5MFD 370V 024 20045 000 1 12 Wheel Blower 026 19654 003 026 19654 003 1 13 Fan Relay Blower 1 1...

Page 28: ...0 026 39212 000 2 11 Motor Oil Burner 026 39213 000 026 39213 000 2 12 Blower Wheel 026 39214 000 026 39214 000 2 13 Coupling 026 33072 000 026 33072 000 2 14 Primary Ignition Control Valve On Delay 026 39215 000 026 39215 000 2 15 Electrical Box 026 39216 000 026 39216 000 2 16 Igniter 026 39217 000 026 39217 000 2 17 Cad Cell Detector 026 39218 000 026 39218 000 2 18 Flange Gasket 026 39219 000 ...

Page 29: ...19 49 9 27 27 46 26 25 16 14 20 8 51 56 57 53 42 1 43 6 38 31 34 33 32 41 16 30 40 40 40 39 35 36 37 28 6 28 29 6 4 10 11 5 17 55 6 6 6 15 23 24 12 45 MINIMUM INPUT 66 000 BTU HR MAXIMUM INPUT 84 000 BTU HR ELECTRICAL POWER SUPPLY 115V 60HZ 1 FUELS NATURAL L P GAS 3 5 W C MOUNTING FIXED FLANGE f BURNER MODELS SC80 C ...

Page 30: ...CYCLER 1 P 26 101243 001 CONTROL IGN H S87K1008 DI 1 P 27 100603 008 SCREW HXSLT 8 18 X 1 25 2 P 28 100603 001 SCREW 6 20 X 375 4 P 29 101154 001 RING BLOWER MOUNTING 1 P 30 63888 001 TUBE AIR INLET YORK 1 M 31 63887 001 DECAL AIR SETTING YORK 1 P 32 63892 001 TUBE DUCT OUTSIDE AIR 7 1 2 LG 1 P 33 63885 001 SHAFT BUTTERFLY DISC AIR 1 P 34 63884 001 DISC BUTTERFLY AIR 1 P 35 63883 001 ELBOW 1 1 2 S...

Page 31: ...107273 UUM C 0306 Unitary Products Group 31 NOTES ...

Page 32: ...form normal or routine maintenance as set out in the operation and service instructions 10 Cleaning replacement of filters or any other routine maintenance as set out in the User s Information Maintenance and Service Manual 11 Replacement or cleaning of nozzles or orifices 12 Fuses either internal or external to the product 13 Excessive fuel or electricity consumption THIS WARRANTY IS IN LIEU OF A...