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York P2DHX16F12001 User's Manual

1. ITEM DESCRIPTION 24 Control Fan amp Limit set 220 Deg F 25 Harness Fan amp Limit Wire 26 Blower Direct Wire Harness 27 Center Fan 27A Relay Replacement 28 Regulator Draft 29 Burner Oil 29A Burner Motor 298 Pump 29C Ignitor Solid State 29D Control Primary Combustion 29E Combination Air Tube 29F Head Flame Retention 120 000 BTU Head Flame Retention 130 000 BTU 29G Nozzle 1 00 60 Deg A Nozzle 1 00 70 Deg A 30 Assembly Blower Complete 30A Housing and Wheel Blower 30B Wheel Blower 30C Motor Blower 30D Band Motor Mount 30E Arms Motor Mount 3 Req d 30F Capacitor Run 30G Strap Capacitor 30H Insulator Capacitor 301 Side Rail Blower 2 Req d 30J Bracket Blower Front 31 Limit Auxillary 130 Deg F ITEM DESCRIPTION 1 Side Panel Right and Left 2 Req d 2 Side Panel Heat Exchanger 2 Req d 3 Panel Rear 4 Assembly Blower Division Panel 5 Support Base Heat Exchanger 6 Panel Front 7 Door Blower Access Handle Door 7B Bezel Logo 7C Label Logo 8 Panel End 9 Assembly Heat Exchanger 10 Bracket Firepot Retainer 11 Chamber Replacement Combustion 12 Assembly Oil Burner Mounting Plate 12A Gasket Inspection Door Right 12B Gasket Inspection Door Left 12C Gasket Inspection Door Center 13 Assembly
2. WIRING DIAGRAM MODEL P3DHX12F08001 OIL FIRED FURNACE MODEL P DHX12F08001 o m 27 o RB184N O MED HI BLOWER MOTOR O MED LO IGNITER FAN CENTER CONTACTOR b m e e e FACTORY WIRING 120 VAC FACTORY WIRING 120 vag FIELD WIRING 120 VAC eyed MS MC Scioli REA B AIR CONDITIONING CONTACTOR o O MED MI RB184N BLOWER RELAY MOTOR HEAT BLOWER OMED LO BURNER MOTOR IGNITER FAN CENTER FACTORY WIRING 120 VAC FIELO WIRING 120 VAC E SERE MER Se E AIR CONDITIONING CONTACTOR AE FIELD WIRING 24 VAC 18 WIRING DIAGRAM MODEL P2LBX16F14501 OIL FIRED FURNACE MODEL P LBX16F14501 BURNER MOTOR FACTORY WIRING 120 VAC mmm wa a 22 FIELD WIRING 120 VAC e lato ERU E FACTORY WIRING 24 VAC 1 AIR CONDITIONING CONTACTOR FIELD WIRING 24 VAC OIL FIRED FURNACE MODEL P LBX20F19001 T amp 4 4 BURNER MOTOR THERMOSTAT THERMOSTAT FACTORY WIRING 120 A A ono eee et ee he ee FIELD WIRING 24 VAC 19 R7184 DETAILED SEQUENCE OF OPERATION Power is applied to unit The R7184 completes a self diagnostic procedure If no light or flame is present and unit passes its self diagnostic procedure the control enters into the idle mode Thermostat calls for
3. Make sure that limit switches are closed and that contacts are clean Check for line voltage power on the oil primary control black and white lead wires Refer to Table C 4 or C 5 for further trou bleshooting information R8184N NOTES The R8184N oil primary control is a standard intermittent ignition control with a 45 second timing The low voltage wires to the L4064W fan limit controller must be connected to and 2 Incorrect wiring connec tions will cause nuisance lockouts The R8184N oil primary control has an enhanced power supply to enable pow ering the L4064W fan limit controller heater circuit Substitute oil primary con trols such as the R8184G and others will not work with this system Cad cell resistance can be checked with an ohmmeter During normal combus tion the resistance should be less than 1500 preferably under 900 Q To measure the resistance start the oil burner After one minute of operation place a temporary jumper across F1 and F2 Remove one of the cad cell wires then read the resistance by con necting the ohmmeter probes to the two cad cell wires Next remove the jumper The oil burner should stop immediately Shut off the power to the furnace then re fasten the cad cell wire to the terminal from which it was removed Restore power to the furnace to continue normal operation TABLE C 2 R7184 TROUBLESHOOTING Condition Burner motor does not start
4. P2DHX16F12001 16 GENERAL DIMENSIONS P2DHX16F12001 17 WIRING DIAGRAM MODEL P3DHX12F08001 18 WIRING DIAGRAM MODEL P2DHX16F12001 18 WIRING DIAGRAM MODEL P2LBX16F14501 19 WIRING DIAGRAM MODEL P4LBX20F19001 19 R7184 DETAILED SEQUENCE OF OPERATION 20 R7184 LED DIAGNOSTIC LIGHT 22 Table C 1 Cad Cell Resistance 22 R8184N NOTES 22 TABLE 2 R7184 TROUBLESHOOTING 23 TABLE C 3 SYSTEM AND GENERAL TROUBLESHOOTING 25 P4LBX20F19001 ASSEMBLY NOTES 28 P3DHX SERIES DOWNFLOW CONFIGURATION NOTES u u la iia 28 P3DHX12F08001 VESTIBULE KIT 29 REPAIR PART LIST P3DHX12F080014 30 REPAIR PART LIST P2DHX16F120014 31 REPAIR PART LIST P2LBX16F145014 32 REPAIR PART LIST P4LB SERIES 33 REPLACEMENT PART CONTACT INFORMATION 34 OIL FIRED WARM AIR FURNACE P3DHX12F08001 P2DHX16F12001 Downflow or Horizontal Models P2LBX16F14501 P4LBX20F19001 Lowboy Models Read this manual completely before beginning installation Important These instructions must be kept with the furnace for future reference IMPROPER INSTALLATION
5. P4LBX20F19001 Cabinet Plenum Openings Flue I I Filter Shipping Width Depth Height Supply Air Return Air Dia Height 2 Weight A B C DxE D x G H J 26 46 56 24 x 22 24 x 22 2 7 50 20 x 25 x1 390 Ib 1 Add 8 inches to allow for oil burner 54 inches total All dimensions in inches 2 5 8 3 4 2 ES k ee EA EE 1 81 2 GENERAL DIMENSIONS P3DHX12F08001 Cabinet Plenum Openings Flue Return Air Shipping Width Depth Height Supply Air Dia Height Filter Weight To Side A B C D xE H J KxL F x G 22 22 4 54 19x19 18 x 18 18 x 18 5 28 4 20 20 1 263 Ib 1 Add 8 inches to allow for burner 30 inches total Add 8 inches to allow for add on vestibule cabinet 31 inches total All dimensions in inches OPTIONAL VESTIBULE B 8 K 4 L Y A p GENERAL DIMENSIONS P2DHX16F12001 Cabinet Plenum Openings Flue E 4 Shipping Width Depth Height Supply Air Return Air Dia Height Filter Weight A B C D x E F x H J 22 4 22 4 62 4 20 34 20 4 18 x 18 6 37 4 20 x20 x 1 320 Ib 1 Add 8 inches to allow for burner 30 inches total All dimensions in inches A
6. 27 Table C 3 System and General Troubleshooting continued AUN blocked QU ding eiie Clean or replace air filter Check all dampers Open closed dampers including registers in unused rooms Check system temperature rise If temperature rise is too high speed up blower fan Check system temperature rise Slow down blower fan if neces Excess airflow Supply air temperature sary Supply air temperature too hot Insufficient airflow too cool Fan control fan on setting too Supply air temperature iow too cool during first mo ments of furnace cycle P4LBX20F19001 ASSEMBLY NOTES The P4LBX20F19001 oil fired furnace is shipped in two pieces the furnace sec tion and the blower section These two sections must be assembled together at the installation site 1 Remove the crating and packaging materials from each section Re move the flue pipe flange gasket packed with the furnace section The flue pipe gasket will be lying loose on the floor of the furnace sec tion 2 Remove the shipping brace from the furnace section flue pipe flange and cabinet Remove and save all of the screws from the flue pipe flange and the ten screws from the rear edges of the furnace section cabi net 5 per side The screws will be re used 3 Place the furnace section and blower section in close proximity Route the wiring harness from the base of the furnace section through the plastic grommet in the blower section
7. ROUGH SIZE OPENING 21 x21 p 4 Pi ENE A MEN ES 1 I I 1 1 1 p 1 1 I i I 1 1 L I b T n T 1 1 1 1 1 The above diagrams show typical ap proaches to framing the rough size open ing for the P DHX series furnaces Be sure to follow local building code re quirements with respect to framing modi fications P3DHX12F08001 VESTIBULE KIT When the P3DHX12F08001 furnace is installed in the downflow position the Part No 1VP1280 Vestibule Kit may be used The vestibule kit encloses the oil burner assembly and provides a pleasing exterior finish 29 NOTE The vestibule kit should stalled before installation of the electrical wiring venting and fuel line or lines 1 P DHX16F12001 ROUGH SIZE OPENING 22 x 224 be in Fasten the right hand panel to the base panel using 2 10 34 sheet metal screws The right hand panel has the large opening in the lower end to accommodate a combustion air pipe to the oil burner The base panel has screw holes along the rear edge which will later be used to fasten the vestibule to the furnace Fasten the left hand panel to the base panel using 2 10 74 sheet metal screws Fasten the top panel to the two sides using 10 4 sheet metal Screws 3 per side Note the pattern of small and large holes
8. mometer will be well within the air stream near the furnace supply air outlet Usu ally the side mid point of the supply air plenum take off is ideal providing it is out of the line of sight to the heat ex changer If the thermometer is within the line of sight of the heat exchanger the supply air readings may be skewed by radiant heat from the heat exchanger If the plenum take off is unsuitable the supply air temperature may be measured within the first 18 inches of the first seg ment of supply air trunk duct If the temperature rise is outside the rec ommended range it may be adjusted on direct drive equipped units by selecting alternate circulation fan motor speeds on belt drive equipped units by adjusting the variable speed motor pulley If the temperature rise is too high speed the fan up If the temperature rise is too low slow the fan down C Keep in mind that the stack tem perature varies directly with the tempera ture rise The higher the temperature rise the higher the stack temperature will be resulting in lower efficiency The lower the temperature rise the lower the stack temperature will be which in some cases may allow condensation to form in the chimney and other vent parts D Test the high limit control to ensure that it is operating correctly For direct drive equipped units this may be done by temporarily removing the circulator fan heating wire or neutral wire For belt drive equipped unit
9. Flue Collector 14 Cover Flue Collector 15 Gasket Pouch 2 Req d 16 Gasket Flue Pipe 2 Req d 17 Assembly Radiator Cleanout Cover 2 Req d 17A Gasket Cleanout Cover 2 Req d 18 Cover Casing Clean out 2 Req d 19 Frame Filter 20 End Support Filter Frame 21 Filter Air 16 x 25 x 1 Permanent 22 Box Junction 23 Limit Switch Secondary 200 Deg F 31 REPAIR PART LIST P2LBX16F14501A ITEM DESCRIPTION 26 Centre Fan 26A Relay Replacement Centre Fan 27 Control Fan and Llmit 5 200 Deg 27A Fuse ABC 15 Amp Slow Blow 27B_ Fuse Holder 28 Regulator Draft 6 29 Support Fan 8 Llmit Insulation Retainer 30 Insulation Retainer Side Panel 2 Req d 31 Burner Oil 31A Motor Burner 31B Pump Oil 31C Ignitor Solid State 31D Combustion Control Primary 31E Tube Combination Air 31F Retention Head Flame 31G Nozzle 1 00 80 Deg A Nozzle 1 20 60 Deg A 32 Blower Assembly Complete 32A Housing Blower and Wheel 32B Wheel Blower 32C Motor Blower 32D Mount Band Motor 32E Mount Arms Motor 3 Req d 32F Run Capacitor Motor 10MFD 370VAC 32G Strap Capacitor 32H Insulator Capacitor 321 Blower Feet Blower LH 32J Blower Feet Blower RH I
10. and return air registers and grilles Open all valves in oil pipes Turn on electric power supply To Light Unit Set the thermostat above room tempera ture to call for heat The burner will start NOTE If the furnace has been off for an extended period of time it may be nec essary to press the RESET button on the primary combustion control relay once only If pressing the reset button does not start the furnace refer to Appendix C Troubleshooting After the furnace warms sufficiently the circulation fan will start The furnace will continue to run until the thermostat call for heat is satisfied Set the thermostat below room tempera ture The oil burner will stop The air circulation blower will continue to run until the furnace has cooled suffi ciently To Shut Down Unit Set the thermostat to the lowest possible setting Set the manual switch if in stalled in the Electrical Power Supply Line to OFF NOTE If the furnace is to be shut down for an extended period of time close the oil supply valve to the oil burner DO NOT ATTEMPT TO START THE BURNER WHEN EXCESS OIL HAS ACCUMULATED WHEN THE FUR NACE IS FULL OF VAPOUR OR WHEN THE COMBUSTION CHAMBER IS VERY HOT NEVER BURN GAR BAGE OR PAPER IN THE FURNACE AND NEVER LEAVE PAPER OR RAGS AROUND THE UNIT TABLE A 1 BECKETT OIL BURNER SET UP BECKETT AF SERIES OIL BURNERS FURNAC
11. breaker can be used as a service switch a separate service switch is advisable The service switch is nec essary if reaching the circuit breaker involves becoming close to the furnace or if the furnace is located between the circuit breaker and the means of entry to the furnace room The furnace switch service switch should be clearly marked installed in an easily accessible area between the furnace and furnace room entry and be located in such a manner to reduce the likelihood that it would be mistaken as a light switch or similar device The power requirements for all models 120 VAC 1 2 60 Hz Maximum fuse size for the P DHX mod els and P2LBX16F14501 model 15 amps Maximum fuse size for the P4LBX20F19001 model 20 amps Accessories requiring 120 VAC power sources such as electronic air cleaners and humidifier transformers may be powered from the furnace circuit Do not use the direct drive motor connections as a power source since there is a high risk of damaging the accessories by expo sure to high voltage from the auto generating windings of the direct drive motor Thermostat wiring connections and air conditioning contactor low voltage con nections are shown in the wiring dia grams Some micro electronic thermo stats require additional controls and wir ing Refer to the thermostat manufac turer s instructions The thermostat should be located ap proximately 5 feet above the floor on an inside wall w
12. cell is getting Furnace starts but cuts dirty If cad cell is poorly aimed realign it NOTE The photocell out requiring manually Photo Cell Cad Cell defec should have a resistance of 100K in absence of light a maxi resetting the oil protector tive mum of 1500 in the presence of light Ensure that room light reset button is not leaking into the cad cell compartment see diagnostic light section or manually measure cad cell resistance Check fuel oil supply Check that all hand operated fuel oil No fuel oil valves are in the open position Fill oil storage tank if necessary Replace nozzle with high quality replacement Use rating plate Clogged nozzle or Tables in Appendix as a guide Clogged oil filter Replace oil tank filter or in line filter if used Connect pressure gauge to oil pump Adjust pump pressure or Low oil pump pressure replace oil pump if necessary Ensure that erratic pressure read starts but ete ings are not caused by defective fuel oil line out requiring manua p Air getting into fuel oil lines or Check fuel oil lines Replace any compression fittings found with resetting the oil protector reset button fuel oil line dirty clogged or in high quality flared fittings Check for any signs of oil leaks Any some manner defective oil leak is a potential source of air or contaminants Check burner motor If burner motor is cutting out on over load determine why Replace if necess
13. handled brush and an industrial vacuum cleaner Replace the clean out yoke assemblies and clean out covers Most circulating fan motors are perma nently lubricated by the motor manufac turer These motors will have no oil ports If the blower motor does contain oil ports under normal operating condi tions it will not require oiling for the first two years Oil sparingly a few drops in each oil port with SAE 20 non detergent oil Oiling is most easily done with a tele spout oiler This oiler has a long flexible plastic spout DO NOT OVER LUBRICATE Excess oil may result in premature electric motor failure Inspect the blower fan Clean it if neces sary Oil Burner Maintenance Follow the in structions of the oil burner manufacturer See oil burner manufacturer s instruc tions supplied with furnace The oil burner nozzle should be replaced annu ally We recommend that the oil filter be changed on an annual basis The venting system should be cleaned and inspected for signs of deterioration Replace pitted or perforated vent pipe and fittings The barometric draft regula tor should open and close freely All electrical connections should be checked to ensure tight connections Safety controls such as the high limit controls should be tested for functional ity The fan control functions should be checked to ensure that all fan speeds are operating properly OPERATING INSTRUCTIONS Before Lighting Open all supply
14. pot Check fire pot Repair or replace blocked ordinaire Clean or replace air filter Check thermostat heat anticipator setting against measured Thermostat adjustments or amperage draw Increase heat anticipator setting if necessary location If the thermostat is being influenced by drafts sunlight duct work etc relocate to more suitable location Poor alignment between oil burner blast tube and fire pot Check all dampers Open closed dampers including registers in Insufficient airflow unused rooms Check system temperature rise If temperature F mace not wamn rise is too high speed up blower fan home to desired tem Test high limit function of all limit switches Use a duct ther perature mometer to assess accuracy of limit control Check for obstruc tions to airflow around limit switch bi metal elements Replace control if necessary Check nozzle If problem is not caused by air flow problems Under sized nozzle use larger nozzle if permitted by rating plate Blower fan motor stopping Check blower fan motor amperage draw Check motor ventila intermittently on overload tion ports clean if necessary Replace motor if necessary Burnier motor stepping interiit Check burner motor Replace if necessary tently on overload Ed does mek Meat Improper distribution of heat This is not likely to be a furnace problem Balance duct system Continues on next page Defective high limit control
15. room two 2 ventilation openings must be provided connecting to a well ventilated space full basement living room or other room opening thereto but not a bedroom or bathroom One opening shall be located 6 from the top and bottom of the enclosure at the front of the furnace For furnaces located in buildings of unusually tight construc 4 tion such as those with high quality weather stripping caulking windows and doors or storm sashed windows or where basement windows are well sealed a permanent opening communi cating with a well ventilated attic or with the outdoors shall be provided using a duct if necessary Size all of the open ings and associated ductwork by the standards provided in the latest Oil In stallation Code editions NFPA 31 in the United States CAN CSA B139 in Can ada Take all fuel burning appliances in the area into consideration when calcu lating combustion and ventilation air re quirements The Model CAS 2B 90E Furnace Boot manufactured by Field Controls Inc may be used with the furnace to obtain com bustion air directly from outdoors Use of this device does not alter the need for ventilation air however it does provide a good direct source of combustion air and is connected directly to the oil burner CHIMNEY VENTING The chimney must be sized correctly and be in good repair If the chimney is over sized there is a high risk of the flue gases condensing resulting in damage to th
16. terminate with an appropriate vent cap in a location where it will not be blocked The fill pipe must be no less than 2 inches P S and terminate with an appropriate cap in a location where debris will not enter the fill pipe during oil delivery If located indoors the tank should nor mally be in the lowest level cellar basement etc It must be equipped with a shut off valve at the tank outlet used for the oil supply The oil tank must be located as to not block the furnace room exit pathway Observe all clear ances specified in the above mentioned codes PIPING INSTALLATION In the United States NFPA 31 Standard for the Installation of Oil Burning Equip ment Chapter 2 In Canada the entire fuel system should be installed in accordance with the re quirements of CAN CSA 139 and local regulations Use only approved fuel oil tanks piping fittings and oil filters Ensure that all fittings used in a copper oil line system are high quality flare fit tings Do not use compression fittings Do not use Teflon tape on any fittings Pressurized or gravity feed installations must not exceed 3 PSIG Pressures greater than 10 PSIG may cause dam age to the shaft seal If the height of the oil stored in a tank above the oil burner exceeds 1175 feet it may be necessary to use a pressure regulating device ap proved for this purpose The furnace may be installed with a one pipe system with gravity feed or lift T
17. the R8184N oil primary con trol The oil burner must align properly with the cerafelt fiber chamber firepot The cerafelt fiber chamber is initially quite soft but hardens and becomes quite brittle after the first firing The fire pot is held in place by a retaining bracket however it is possible for the firepot to shift if subjected to rough han dling during transit BEFORE OPERATING THE FUR NACE CHECK BURNER ALIGNMENT WITH COMBUSTION CHAMBER THE END CONE OF THE AIR TUBE MUST BE CENTRED TO THE AC COMODATING RING PROVIDED IN THE DESIGN OF THE COMBUSTION CHAMBER ADJUST ALIGNMENT AS NECESSARY BEFORE THE FIRST FIRING OIL BURNER NOZZLES All furnace models are certified for multi ple firing rates Choose the firing rate that most closely matches the calculated heat loss of the building Models firing rates and nozzles are listed in Appendix A AF Burner Set Up Fig 4 Horizontal Smoke Test Port Location BURNER ELECTRODES Correct positioning of the electrode tips with respect to each other to the fuel oil nozzle and to the rest of the burners is essential for smooth light ups and proper operation The electrode tips should be adjusted to a gap of 5 32 1 16 ahead of the nozzle 5 16 above the centerline of the nozzle The Z dimension front edge of the burner head to the front face of the nozzle is 1 1 8 inches Electrode positioning should be checked before the first firing of the f
18. when there is a call for heat 1 Check that limit switches are closed and contacts are clean This includes the burner motor reset button Check for line voltage power at the oil primary control Voltage should be 120 Vac between the black and white lead wires on the oil primary control Check indicator light with burner off no call for heat no flame Shield cad cell from external light Jumper thermostat T T terminals on R7184 IMPORTANT First remove one thermostat lead wire Corrective Action Indicator liqht is on Cad cell is defective sees external light or connections 9 i have shorted Go to step 4 Indicator light is off Go to step 5 Indicator light turns off external light source or permanently shield cad e Replace cad cell with new cad cell and recheck If indicator light does not turn off remove yellow leadwires from R7184 and recheck If indicator light is still on replace the R7184 control If the indicator light turns off replace cad cell bracket assembly Indicator light stays on Trouble is in thermostat circuit Check thermostat wiring connections If connections are clean and tight check thermostat wires for continuity Burner starts Disconnect line voltage power and open line switch Check all wiring connections Tighten any loose connections and recheck If burner still doesn t start replace R7184 Burner does not start If burner still doesn
19. wires with a wire nut As a safety precaution against accidental disconnection of the wires by vibration it is advisable to se cure the wire nut and wires with a few wraps of electricians tape If the joining of the blower speed wiring is done in the furnace junction box tape off both ends of the unused wire The P4LBX20F19001 furnace model is equipped with a belt drive blower sys tem The blower speed RPM and resul tant airflow can be varied by adjusting the variable speed motor pulley DISCONNECT THE POWER SUPPLY TO THE FURNACE BEFORE OPEN ING THE BLOWER ACCESS DOOR TO SERVICE THE AIR FILTER FAN AND MOTOR FAILURE TO SHUT OFF POWER COULD ALLOW THE BLOWER TO START UNEXPECT EDLY CREATING A RISK OF DEATH OR PERSONAL INJURY Do not use the blower speed wires as a source of power to accessories as electronic air cleaners and humidifier transformers The unused motor taps auto generate sufficiently high volt ages to damage accessory equip ment Do not start the burner or blower fan unless the blower access door is se curely in place DO NOT CONNECT POWER LEADS BETWEEN MOTOR SPEEDS THE NEUTRAL WIRE MUST ALWAYS BE CONNECTED TO THE MOTOR S DES IGNATED NEUTRAL TERMINAL OIL BURNER P LBX furnaces are equipped with Beckett AF Series oil burners with the Beckett CleanCut pump and R7184B oil primary control P DHX furnaces are equipped with Beckett AF Series oil burners with
20. 08 1213 1123 Med High 1377 1308 1224 1143 1063 P3DHX12F08001 GT10 Y 7 7 70 90 F Med Low 1088 1075 1038 985 916 Low 721 721 712 688 649 High 1752 1691 1659 1593 1525 Med High 1454 1454 1417 1379 1300 P2DHX16F 12001 G12 10 1 2 7 7 70 90 F Med Low 975 944 912 879 844 Low 631 593 552 515 486 High 1810 1740 1675 1585 1510 Med High 1570 1540 1495 1445 1375 P2LBX16F 14501 G10 1 2 7 7 70 90 F Med Low 1090 1080 1070 1065 1050 Low 710 700 690 665 650 TABLE A 5 BELT DRIVE BLOWER CHARACTERISTICS Motor CFM Motor Blower Pulley Furnace Model Motor HP FLA AT Blower Pulley Turns External Static Pressure Inches water column Out 0 20 0 30 0 40 0 50 0 60 0 2274 2080 1847 1532 1099 2 2107 1927 1712 1420 1019 P4LBX20F19001 3 4 HP 13 0 85 F G12 7 4 1939 1775 1576 1308 939 6 1772 1622 1441 1196 859 These formulae will assist with the design of the ductwork and the determination of airflow delivery Bonnet Output Bonnet Output 13 E 1085 x System Temperature Rise System Temperature Rise 1085 GENERAL DIMENSIONS P2LBX16F14501 Cabinet Plenum Openings Flue Shipping Width Depth Height Supply Air Return Air Gap Dia Height Filter Weight A B C D x E D x G F H J 22 51 75 41 20 5 x 18 58 20 5 x 18 95 1 34 6 34 78 20 25 1 290 Ib All dimensions in inches c GENERAL DIMENSIONS
21. 84 SEQUENCE of THERMOSTAT CALLS FOR HEAT SAFETY CHECK FOR FLAME 5 SEC OPERATION NO FLAME BURNER MOTOR 8 IGNITOR START 15 SEC SOLENOID VALVE OPENS TRIAL FOR IGNITION BURNER FLAME MONITORED CARRYOVER STATE Provides continuous spark TO EXIT LOCKOUT LED diagnostic light ON PRESS RESET Start Carryover Timer FLAME LOST REMAINS IN IDLE STATE LOCKOUT STATE R7184 Shuts off burner motor Shuts off igniter Shuts off Solenoid Valve Fast Flashes LED Diagnostic Light FLAME CARRYOVER TIMER EXPIRES FLAME RECYCLE TIMER STARTS RUN STATE e lgnitor turns off FLAME LOST R7184 THERMOSTAT SATISFIED SSS Solenoid Valve Shuts off Ignitor Shuts off Burner Motor Slow Flashes LED diag nostic light R7184 SHUTS OFF e Burner Motor Solenoid Valve LED Diagnostic Light RECYCLE TIMER EXPIRES 60 SECONDS RETURNS TO IDLE STATE 21 R7184 LED DIAGNOSTIC LIGHT The LED diagnostic light has several functions It indicates the state or mode in which the oil burner is operating It will also indicate fault conditions and help determine cad cell resistance while the burner is operating NORMAL CONDITIONS The LED diagnostic light will turn on when the burner enters the carryover state the point at which ignition spark is on and will remain on through the run state where the ignition spark is termi nated but the burner continues to fire The LED diagnostic light will turn o
22. CAPACITY FURNACE TUM BLOWER 0 20in w c 0 50 in w c Htg ae MOTOR Clg CFM Speed Speed Range HP Range 60 000 Low Med Low 615 790 P3DHX12F08001 78 000 GT10 DD 1 2 Med Low Med High 799 1027 3 1 2 690 1200 90 000 Med High High 922 1185 91 000 Med Low Med High 932 1199 101 000 Med Low Med High 1035 1330 P2DHX16F12001 GT12 10 DD 1 2 4 1 2 1000 1600 117 000 Med High High 1198 1540 128 000 Med High High 1311 1685 130 000 High High 1332 1712 P2LBX16F14501 G10 DD 1 2 4 1 2 1065 1600 143 000 High High 1465 1883 M Heating Range values based on temperature rise Upper values may exceed measured airflow values in Table A 3 Nominal values only TABLE A 3 BELT DRIVE BLOWER SET UP Blower Set Up Cooling Capacity Furnace 0 20 in w c 0 50 in w c Blower Motor Model Pulley Belt Pulley Belt Tons CFM Range Motor Blower Motor Blower 3 x Ye 7 41430 3 7 41430 P4LBX20F19001 G12 3 4 HP 4 1300 1535 3 x Ye 7 41430 3 7 41430 12 TABLE A 4 DIRECT DRIVE BLOWER CHARACTERISTICS FURNACE MOTOR MOTOR BLOWER RISE SPEED External Static Pressure inches w c MODEL HP FLA AT AT 0 20 0 30 0 40 0 50 0 60 High 1469 1386 13
23. Closet Alcove 24 inches is required for servicing 2 48 inches is required on one side as service access to rear 3 18 inches required in some U S jurisdictions DOWN FLOW INSTALLATION All P DHX furnace models have been assembled for installation in the down flow position Maintain all clearances to combustibles as outlined in Table 1 P DHX models have available sub bases for installations on combustible floors The sub bases provide a means of effec tively mating the supply air plenum with the furnace and providing the necessary one inch clearance to combustibles around the supply air plenum Fig 1 Typical Suspended Application SUGGESTED METHOD FOR SUSPENDING HORIZONTAL FURNACE RETURN AIR PLENUM HORIZONTAL INSTALLATION P DHX furnaces models may be in stalled in either of the horizontal posi tions warm air discharging left or warm air discharging right by following these steps 1 Rotate the furnace 90 to the de sired position 2 Remove the three nut and washer sets fastening the oil burner assem bly to the furnace Rotate the oil burner assembly to be in the normal upright position ALLOW ENOUGH ANGLE IRON OVERHANG TO PERMIT OPENING THE BLOWER DOOR 3 Re align the oil burner assembly to the combustion chamber fire pot and then secure into place with the three nut and washer sets IMPORTANT Model P3DHX12F08001 has an auxiliary limit control that must be in the upp
24. E OUTPUT BURNER NOZZLE PUMP FLOW HEAD STATIC MODEL BTU Hr MODEL Delavan PRESSURE RATE PLATE 60 000 AF76BNHS 0 50 80 A 100 PSIG 0 50 GPH 3 3 8 P3DHX12F08001 78 000 AF76BNHS 0 65 80 A 100 PSIG 0 65 GPH 3 3 8 90 000 AF76BNHS 0 75 80 A 100 PSIG 0 75 GPH 3 3 8 91 000 AF76XN 0 75 80 100 PSIG 0 75 GPH 2 3 4 in 101 000 AF76XN 0 85 80 A 100 PSIG 0 85 GPH F3 2 3 4 in P2DHX16F 12001 5 117 000 AF76XN 1 00 60 A 100 PSIG 1 00 GPH F3 2 3 4 in 128 000 AF76YB 1 10 70 A 100 PSIG 1 10 GPH F6 2 3 4 in 130 000 AF65YB 1 10 70 A 100 PSIG 1 10 GPH F6 2 3 4 in P2LBX16F 14501 5 143 000 65 1 20 60 A 100 PSIG 1 20 GPH F6 2 3 4 in 168 000 AF81WF 1 50 70 100 PSIG 1 50 GPH F16 2 3 4 in P4LBX20F 19001 188 000 AF81WF 1 65 70 B 100 PSIG 1 65 F16 2 3 4 in 1 Used with ceramic insulator Factory supplied nozzle Requires a low firing rate baffle In the United States the R W Beckett AF Burner may be equipped with Beckett s Inlet Air Shut Off Beckett Part No AF A 5861 to increase efficiency lt reduces the amount of air passing through the oil burner combustion chamber breeching etc up the chimney between burner cycles NOTE THE USE OF THIS CONTROL CAN OCCASIONALLY CAUSE POST COMBUSTION NOZZLE DRIP 11 TABLE A 2 DIRECT DRIVE BLOWER SET UP BLOWER SET UP COOLING
25. Heat Exchanger 10 Bracket Firepot Retainer 11 Chamber Replacement Combustion 12 Assembly Oil Burner Mounting Plate 12A Gasket Inspection Door Right 12B Gasket Inspection Door Left 12C Gasket Inspection Door Center 13 Assembly Flue Collector 14 15 Gasket Pouch 16 Gasket Flue Pipe 2 Req d 17 Assembly Radiator Cleanout Cover 2 Req d 17A Gasket Clean out Cover 2 Req d 18 Cover Casing Clean out 2 Req d 19 Frame Filter 20 End Support Filter Frame 21 Filter Air 16 x 25 x 1 Permanent 22 Box Junction ITEM DESCRIPTION 23 24 Control Fan amp Limit set 250 Deg F 25 Harness Fan amp Limit Wire 26 Blower Direct Wire Harness 27 Center Fan 27A Relay Replacement 28 Regulator Draft 29 Burner Oil 29A Burner Motor 29B Pump Oil 29C Ignitor Solid State 29D Control Primary Combustion 29E Combination Air Tube 29F Head Flame Retention 29G Nozzle 0 65 60 Deg A 30 Assembly Blower Complete 30A Housing and Wheel Blower 30B Wheel Blower 30C Motor Blower 30D Band Motor Mount 30E Arms Motor Mount 3 Req d 30F Capacitor Run 30G Strap Capacitor 30H Insulator Capacitor 301 Side Rail Blower 2 Req d 30J Bracket Blower Front 31 Limit Auxillary 160 Deg F 32 Baffle Rear Panel 33 Retainer Channel Wire 30 REPAIR PART LIST P2DHX16F12001A
26. INSTALLATION MANUAL CONTENTS INTRODUCTION ccccccccccccoconcnnccccconananananononanananannnnnonanananans 2 HEAT LOSS cuidada 2 LOCATION OF UNIT 2 AIR CONDITIONING 4 COMBUSTION AIR 4 CHIMNEY VENTING 4 e Bg p 1 Koi iii 6 PIPING INSTALLATION 6 ELECTRICAL CONNECTIONS 6 CIRCULATING BLOWER 7 OIL BURNER E 8 FURNACE INSTALLATION SET UP 9 MAINTENANCE AND SERVICGE 10 OPERATING INSTRUCTIONS 10 TABLE 1 BECKETT OIL BURNER SET UP 11 TABLE 2 DIRECT DRIVE BLOWER SET UP 12 TABLE 3 BELT DRIVE BLOWER SET UP 12 TABLE A 4 DIRECT DRIVE BLOWER CHARACTERISTICS 13 TABLE A 5 BELT DRIVE BLOWER CHARACTERISTICS 13 GENERAL DIMENSIONS P2LBX16F14501 14 GENERAL DIMENSIONS P4LBX20F19001 14 GENERAL DIMENSIONS P4LBX20F19001 15 GENERAL DIMENSIONS P3DHX12F08001 15 GENERAL DIMENSIONS 12 8001 16 GENERAL DIMENSIONS
27. MAY CRE ATE A CONDITION WHERE THE OP ERATION OF THE PRODUCT COULD CAUSE PERSONAL INJURY OR PROPERTY DAMAGE IMPROPER INSTALLATION ADJUST MENT ALTERATION SERVICE OR MAINTENANCE CAN CAUSE INJURY OR PROPERTY DAMAGE REFER TO THIS MANUAL FOR ASSISTANCE OR ADDITIONAL INFORMATION CON SULT A QUALIFIED INSTALLER SER VICE AGENCY OR THE FUEL SUP PLIER DO NOT USE GASOLINE CRANK CASE OIL OR ANY OTHER OIL CONTAINING GASOLINE AS A FUEL FOR THIS FURNACE THIS PRODUCT MUST BE INSTALLED IN STRICT COMPLIANCE WITH THESE INSTALLATION INSTRUCTIONS AND ANY APPLICABLE LOCAL STATE AND NATIONAL CODES INCLUDING BUT NOT LIMITED TO BUILDING ELECTRICAL AND MECHANICAL CODES The furnace area must not be used as a broom closet or for any other storage purposes as a fire hazard may be cre ated Never store items such as the fol lowing on near or in contact with the furnace 1 Spray or aerosol cans rags brooms dust mops vacuum clean ers or other cleaning tools 2 Soap powders bleaches waxes or other cleaning compounds plastic items or containers gasoline kero sene cigarette lighter fluid dry cleaning fluids or other volatile flu ids 3 Paint thinners or other painting ma terials and compounds 4 Paper bags boxes or other paper or cardboard products Never operate the furnace with the blower door removed To do so could result in serious personal injury and or equip
28. OKE TEST NOTE If oily or yellow smoke spots are found on the smoke test filter paper it is usu ally a sign of unburned fuel This indi cates poor combustion This type of problem may be caused by excess draft excess air or contaminated fuel Do not ignore this indicator STACK TEMPERATURE Stack temperature will vary depending on fuel input circulating air blower speed and burner set up etc In gen eral stack temperature should typically range between 380 F to 550 F assum ing that the combustion air is approxi mately room temperature 65 F 70 F In general lower stack temperature indi cates greater efficiency however ex cessively low stack temperature can lead to condensation forming in the chimney and or venting Sulphur and similar contaminants in the fuel oil will mix with condensation to form acids Acids and resultant chemical salts will cause rapid deterioration of the chimney and venting components and may attack the fur nace If the flue gases are below the range it may be necessary to slow down the blower fan If the flue gases are above the range the blower fan may require speeding up Stack temperature varies directly with the system temperature rise System temperature rise is the difference between the furnace outlet temperature and furnace inlet temperature as meas ured in the vicinity of the connection be tween the plenum take offs and the trunk ducts Typical temperature rise value
29. TEM DESCRIPTION 1 Panel Side Left 2 Panel Side Right 3 Panel Rear Upper 4 Panel Blower Division 5 Panel Assembly Base 6 Panel Inner Front 6A Bezel Logo 6B Label Logo 7 Door Blower Access Handle Door 8 Panel Front Door 9 Panel Top Front 10 Heat Exchanger Assembly 11 Flue Pipe Assembly 12 Retaining Bracket Firepot 13 Chamber Replacement Combustion 14 Baffle Top Front 15 Baffle Inner Front 16 Baffle Right Side Panel 17 Mounting Plate Assy Oil Burner 17 Gasket Inspection Door 18 Gasket Pouch 19 Gasket Flue Pipe 2 Req d 20 Cover Assembly Radiator Cleanout 2 0 20A Gasket Clean Out Cover 2 Req d 21 Clean out Cover Casing 2 req d 22 Filter Air 20 x 20 x1 Permanent 23 Box Junction 24 Wire Harness Blower Direct Drive 25 Wire Harness Fan Limit 32 REPAIR PART LIST P4LB SERIES ITEM DESCRIPTION Panel Left Side Heating Compartment ITEM DESCRIPTION 23B Pump Oil 23C Ignitor Solid State 23D Control Primary Combustion 23E Air Tube Combination 23F Retention Head Flame F16 23G Nozzle 1 65 70 Deg B 24 Mounting Plate Assembly Oil Burner 24A Door Inspection 24B Gasket Inspection Door 25 Gasket Pouch 26 Flue Pipe Assembly 27 Gasket Flue Pipe 2 Re
30. TRICTED MODE press and hold the reset button for 30 seconds When the LED flashes twice the de vice has reset Disable function Pressing and holding the reset button will disable all functions until the button is released The burner will restart at the beginning of the normal heat cycle on SAFETY CHECK TABLE C 3 SYSTEM AND GENERAL TROUBLESHOOTING Check thermostat and adjust Also check thermostat for accu Thermostat not calling for heat pU E racy if it is a mercury switch type it might be off level Check furnace switch main electrical panel furnace fuse or cir cuit breaker Also look for any other hand operated switch such as an old poorly located furnace switch which was not removed during furnace replacement No power to furnace Furnace will not start Remove thermostat wires from oil primary control terminals T T Thermostat faulty Place a jumper across T T If furnace starts replace thermostat thermostat sub base if equipped or both Check reset button on oil primary control Remove thermostat wires from oil primary control terminals T1 T2 Check for 24v across T If no voltage is present check for 115v to oil pri mary control If 115v is present go to Table C 2 Oil primary control faulty Continues on next page 25 Table C 3 System and General Troubleshooting continued Photo Cell wiring shorted or Check photo cell cad cell wiring for short circuits Also check room light lea
31. ails Electrical Shock Hazard Troubleshooting is done with the system powered Be careful to observe all nec essary precautions to prevent electrical shock or equipment damage When simulating a call for heat at the R7184 disconnect at least one thermo stat lead wire from the T1 T2 terminals to prevent damage to the thermostat Neglecting this procedure may burn out the heat anticipator of a standard 24 vac thermostat or cause harm to compo nents within a micro electronic thermo stat Before checking the oil primary control perform these preliminary checks repair or replace controls as necessary check the power supply fuse box or breaker any service switches all wir ing connections and burner motor re set button if equipped e check the limit switches to ensure that the switch contacts are closed check the electrode gap and position check the contacts between the oil primary control and the electrodes check oil supply tank gauge e check the oil nozzle oil filter and oil valves check the piping or tubing to the oil tank check the oil pump pressure CHECK OIL PRIMARY CONTROL AND IGNITOR If the trouble does not appear to be in the burner or ignition hardware check the oil primary control and the ignitor by using the following equipment screwdriver voltmeter 0 150 vac insulated jumper wires with both ends stripped Preliminary Checks
32. along the base panel and two side pan els The vestibule unit will screws in the front of the furnace which correspond to the small holes noted above 4 use the Remove the sheet metal screws in the furnace front panel which corre spond to the small holes only along the rear edge of the vestibule base and side panels NOTE Do not remove all screws from the front panel of the furnace 5 Place the assembled vestibule against the front panel of the fur nace and align the vestibule screw holes with the furnace front panel screw holes Fasten the vestibule into place using the screws which were removed from the furnace HINT To help with fastener alignment do not tighten any of the screws all the way in until each screw has been started 2 or 3 turns NOTE Extra sheet metal screws are provided with this kit in case screws re moved from the furnace are accidentally dropped or lost REPAIR PART LIST P3DHX12F08001A ITEM DESCRIPTION 1 Assembly Right Side Panel 2 Assembly Left Side Panel 3 Panel Rear 4 Assembly Blower Division Panel 5 Assembly Base Panel 6 Panel Inner Front 7 Door Blower Access Handle Door 7B Bezel Logo 7C Label Logo 8 Panel Assembly Top 9 Assembly
33. and in good repair it will probably be necessary to re evaluate the availability of combustion and ventilation air and take corrective action The flue pipe should be as short as pos sible with horizontal pipes sloping up ward toward the chimney at a rate of one quarter inch to the foot The flue pipe should not be smaller in cross sec tional area than the flue collar on the furnace The flue pipe may be reduced in size to fit a smaller diameter chimney with the use of a tapered reducer fitting at the chimney inlet The flue pipe should connect to the chimney such that the flue pipe extends into and terminates flush with the inside surface of the chimney liner Seal the joint between the pipe and the lining The chimney outlet should be at least two feet above the highest point of a peaked roof All unused chimney openings should be closed Chimneys must conform to local provincial or state codes or in the absence of local regula tions to the requirements of the National Building Code See Figure 2 and Table 2 for common chimney problems and their remedies THE FURNACE MUST BE CON NECTED TO A FLUE HAVING SUFFI CIENT DRAFT AT ALL TIMES TO EN SURE SAFE AND PROPER OPERA TION OF THE APPLIANCE The flue pipe must not be routed through concealed space because it must be visually checked for signs of deteriora tion during the annual inspection and servicing The flue pipe must not pass through any floor or ceil
34. ary Water orcontaminante ioil oil storage tank replace fuel oil Consult with fuel oil Gently warm oil line Insulate oil line Outdoor piping size may require increased diameter Electrodes out of adjustment Check electrode settings Check electrodes for dirt build up or or defective cracks in porcelain Poor transformer high voltage connections or defective trans Oil burner sputtering at former nozzle Fuel oil filter clogged Replace fuel oil storage tank filter and or fuel oil in line filter Defective oil pump Check burner motor fuel oil pump coupling Check oil pump pressure Replace fuel oil pump if necessary Fuel oil line partially clogged or Bleed air from oil line If problem persists replace oil line contains air Defective burner motor Frozen oil line Check contacts between the igniter and electrodes If OK re place the igniter Continues on next page 26 Table C 3 System and General Troubleshooting continued System temperature rise ideally should not exceed 85 F Check for clogged air filters Check blower fan for excess dirt build up or debris Speed up blower fan if necessary System temperature rise too high Check fan off delay timing setting Use a duct thermometer in the supply air plenum take off or first few inches of the supply air trunk duct Ideally the fan will shut off at a temperature of 90 100 F Manipulate the dip switch settings to come as close Exc
35. blower division panel 4 Position and align the flue pipe flange gasket between the furnace section and blower section flue pipe flanges and hold it in place with a pair of awls or similar tool 5 Begin fastening the flue pipe flanges together from inside the blower sec tion to the furnace section with the 28 Ex essivexuctiossos Check supply air ductwork Seal leaky joints and seams Insu late ductwork if necessary Increase differential between fan control fan off and fan on settings LA064B L6064A fan limit controls only no adjust ments available for L4064W fan limit control Register air de flectors may help Six 74 20 inch screws saved from the removal of the shipping brace Start each screw carefully so as not to damage the flue pipe flange gasket After all six screws have been started and proper gas ket alignment has been confirmed tighten all six screws evenly Align the screw holes in the blower section blower division panel with the screw holes in the furnace sec tion cabinet rear edge from which the ten screws were removed The screws are started from the inside of the blower section to the furnace section Tighten all ten screws evenly In a similar manner start four of the extra screws removed and saved from the furnace section flue pipe flange into the screw holes along the top of the two furnace sections Remove the blower motor electric wiring cover plate Connect th
36. d be closed and the air shutter initial set ting should be approximately 7 00 Note A Locate hole at least 6 inches on the furnace side of the draft control Note B Ideally hole should be at least 12 inches from breeching or elbow PROCEDURE Start the burner and allow it to run at least ten minutes Set the air shutter to give a good flame visually The combus tion air supply to the burner is controlled by adjusting the air shutter on the left side of the burner and if necessary the bulk air band To adjust loosen the bolt on the movable shutter Move the shutter gradually until a good flame visually has been achieved Re snug the bolt Check the initial draft setting as the fur nace warms up The draft may be meas ured at the test port The final breech draft should be 0 02 inches w c to provide adequate over fire draft Fig 5 Vertical Smoke Test Port Location Vertical Flue Connection Location for sampling hole breeching Check the oil pump pressure Standard operating pressure is 100 PSIG After reaching steady state take a smoke test If not indicating a trace set the combustion air controls to provide a trace Typically the reading will range from 11 5 to 13 5 After the air adjustments have been completed and the air shutter or air ad justment plate has been secured re check the breech draft and take another smoke test to ensure that the values have not changed SM
37. e black lead from the wiring harness to motor terminal L1 the white lead to motor terminal L2 and the green lead to the motor casing ground terminal Position the wires in the motor casing indentations and re install the blower motor electric wir ing cover plate Excessive duct losses Check supply air ductwork Seal leaky joints and seams Insu late ductwork if necessary P3DHX SERIES DOWNFLOW CONFIGURATION NOTES When the P3DHX12F08001 or P2DHX16F12001 are installed in the downflow configuration on a wooden floor it should be mounted on a sub base The sub base provides a means of main taining the supply air plenum clearance to combustibles and a means of mating the supply air plenum to the furnace Model Sub base P3DHX12F08001 1CB1312 P2DHX16F12001 1CB0316 If the furnace is to be installed on a wood floor over joists on 12 inch or 16 inch centers framing modifications are nec essary Rough Size Openings P3DHX12F08001 21 x 21 P2DHX16F 12001 22 x 2272 The edges of the rough size opening must be well supported by the joist fram ing to take the weight of the furnace The sub base may support the supply air plenum Fold a inch 90 flange then drop the supply air plenum through the sub base opening The flanges will rest on the sub base and the furnace placed on the flange will lock the plenum into place A ler 72135242264 I I P DHX12F08001
38. e chimney and other venting parts This problem may be corrected by the use of an appropriately sized chimney liner If the chimney serves the P3DHX12F08001 furnace only the vent should be sized at 4 inch minimum 5 inch maximum If the chimney serves the P2DHX16F12001 or P2LBX16F14501 furnace only the vent should be sized at 4 inch minimum 6 inch maximum If the chimney serves the P4LBX20F19001 furnace only the vent should be sized at 5 inch minimum 7 inch maximum The data provided in Table 3 is based on dedicated venting If the furnace is to be co vented with other appliances refer to NFPA 211 Standard for Chimneys Fire places Vents and Solid Fuel Burning Appliances NFPA 31 Standard for the Installation of Oil Burning Equipment or CAN CSA B139 Installation Code For Oil Burning Equipment for correct sizing information NOTE This furnace is approved for use with L Vent NOTE Maximum temperature for L Vent is 575 F 300 C IMPORTANT The chimney must be capable of providing sufficient draft at all times for the safe removal of the prod ucts of combustion The chimney should be tested under winter conditions doors and windows closed all other fossil fuel burning appli ances on clothes dryer on bathroom fans on etc If the chimney cannot over come the competition for air it will be necessary to access the reason for it and take corrective action If the chimney is found to be sized correctly
39. er position Be sure that the auxiliary limit control is above the oil burner assembly NON SUSPENDED INSTALLATION Maintain clearances to combustibles as outlined in Table 1 Installation on a combustible floor requires a clearance of 1 inch This can be done by using a non combustible material such as one inch thick channel iron or similar material The furnace must be supported in such a way as to not allow twisting or sagging of the cabinet Suggestion as a measure to prevent fuel oil from accumulating in locations other than the fire pot as could be the case in the event of nozzle drip install the furnace with an approximate 2 degree slope from the oil burner casing towards the fire pot Use shims made of noncombustible material 3 8 INCH THREADED ROD m 2 INCH ANGLE IRON JAM NUTS LOCK WASHER FLAT WASHER 18 SUPPLY AIR PLENUM SUSPENDED INSTALLATION Refer to Figure 1 Maintain clearances to combustibles as outlined in Table 1 The furnace may be suspended by field fabri cating a cradle of angle iron and threaded rod Secure the furnace with 2 inch minimum slotted angle or equiva lent as shown in Figure 1 The furnace must be supported in such a way as to not allow twisting or sagging of the cabi net Position the supports so as to not interfere with accessing the burner and blower compartments Suggestion as a measure to prevent fuel oil from accumu latin
40. essive fuel il scans as possible to this fan off temperature sumption Fuel oil leak Check fuel oil line for leaks Repair or replace if necessary Check stack temperature Stack temperatures will normally Stack temperature too high range from 350 to 450 F Check draft regulator Draft should be set to 0 02 in w c Poor fan off delay timing se lection fan stops too soon Check thermostat heat anticipator setting against measured Thermostat improperly ad amperage draw Increase heat anticipator setting if necessary justed or in poor location If the thermostat is being influenced by drafts sunlight duct work etc relocate to more suitable location Insufficient combustion air Adjust the oil burner combustion air band and draft regulator to adjustment at oil burner or gain the highest practical CO or lowest practical O2 content in Too much smoke improper draft pressure the flue gases See Burner Set Up Heat exchanger partially Check for soot build up in heat exchanger flue passages espe clogged cially in the outer radiator Check alignment air tube should be centered with fire pot burner opening Oil burner head should be 74 inch back from the Soot building up on blast inside surface of the fire pot tube end coning Flame impingement caused by Check nozzle size and angle See Appendix A Check dis Incorrect nozzle angle tance from head to inside surface of the fire pot Defective fire
41. ff at the end of the burner cycle as the R7184 enters the idle state and will remain off until the next heating cycle FAULT CONDITIONS If the LED diagnostic light is flashing quickly 1 Hz second on gt second off the R7184 is in the lockout state or in restricted mode To exit the lockout state press the reset button If the LED diagnostic light is flashing slowly 74 Hz 2 seconds on 2 seconds off the R7184 is in the recycle state This indicates that flame sensing was lost after the lockout timer expired during the ignition carryover state The R7184 will return to the idle state within 60 sec onds CAD CELL CONDITION If the LED diagnostic light is off the cad cell is not sensing flame If the LED diagnostic light is on the cad cell is sensing flame or viewing ambient light The resistance of the cad cell may be checked while the R7184 is in the run state by pressing the reset button The LED diagnostic light will flash the follow ing code Table C 1 Cad Cell Resistance Flashes Resistance in Ohms Less than 400 Between 400 800 Between 800 1600 Between 1600 5000 22 Troubleshooting IMPORTANT Due to the potential hazard of line voltage only a trained ex perienced service technician should perform the trouble shooting procedure PRELIMINARY STEPS Check the diagnostic light for indications of burner condition Refer to R7184 LED DIAGNOSTIC LIGHT section for det
42. ffle Top Front Panel 23 Burner Assembly Oil 23A Motor Burner 33 REPLACEMENT PART CONTACT INFORMATION This is a generic parts list To request a complete parts list refer to the contact information below Call Consumer Relations at 1 877 874 7378 Follow the instructions to contact the department and or represen tative that can assist you Visit our website at www source1parts com for the following information 1 Search for a part or browse the catalog 2 Find a dealer or distributor 3 Customer Service contact information a Click on the Brand Links button b Click on the Customer Service button You can contact us by mail Just send a written request to York International Consumer Relations 5005 York Drive Norman OK 73069 34 35 NOTES Subject to change without notice Printed in U S A 035 14289 001 Rev A 0503 Copyright O by York International Corp 2003 All rights reserved Supersedes 035 14289 000 660 08 N1U 0300 Unitary 5005 Norman Products York Group Drive 73069
43. g in locations other than the fire pot as could be the case in the event of noz zle drip install the furnace with an ap proximate 2 degree slope from the oil burner casing towards the fire pot AIR CONDITIONING If the furnace is used in conjunction with air conditioning the furnace shall be installed in parallel with or upstream from the evaporator coil to avoid condensation in the heat exchanger In a parallel installation the dampers or air controlling means must prevent chilled air from en tering the furnace If the dampers are manually operated there must be a means of control to prevent the operation of either system unless the dampers are in the full heat or full cool position The air heated by the furnace shall not pass through a refrigeration unit unless the unit is specifically approved for such service Generally a six inch clearance between the air conditioning evaporator coil and the heat exchanger will provide adequate airflow through the evaporator coil The blower speed must be checked and adjusted to compensate for the pressure drop caused by the evaporator coil Re fer to Appendix B for recommended wir ing and electrical connections of the air conditioning controls COMBUSTION AIR When a furnace is installed in the full basement of a typical frame or brick house infiltration is normally adequate to provide air for combustion and draft op eration If the furnace is installed in a closet or utility
44. he maximum allowable lift on a single line system is 8 feet Lift should be measured from the bottom outlet of the tank to the inlet of the burner Sizing a single line system is complex because of the difficulty estimating the pressure drop through each fitting bend and compo nent in the line In general keep single line systems short as possible 2 stage oil pumps are not available for either the P HMX or P LBX furnaces The following chart shows the allowable line lengths horizontal vertical for single and two line oil piping systems All distances are in feet Table 4 Oil Lines Continue 5 33 100 55 100 6 29 100 53 100 7 25 99 50 100 8 21 83 48 100 9 17 68 45 100 10 13 52 42 100 12 37 100 14 32 100 16 27 100 18 22 88 Copper Tubing Oil Line Length Feet Single Pipe Two Pipe Feet OD Ho OD 0 53 100 68 100 1 49 100 65 100 2 45 100 63 100 3 41 100 60 100 4 37 100 58 100 In retrofit applications where an existing oil line system is in place a vacuum check will help determine the efficacy of the existing oil line system The vacuum in a system should not exceed 6 Hg for a single pipe system nor 12 Hg for a two pipe system NOTE The oil burner requires the use of a bypass plug when converting from single pipe to two pipe oil piping sys tems See burner
45. heat A Safety check is made for flame 4 second delay 1 When flame is not present the R7184 will apply power to the burner motor and igniter 2 When flame is present the control remains in the idle state B Unit enters and completes a pre purge period of 15 seconds then applies power to the solenoid valve C Control enters the trial for ignition state D Control monitors the burner flame 1 When flame is present the control enters ignition carryover state Continues to spark for 10 sec a Provides continuous spark after flame is sensed to assure that burner remains lit b Turns on LED diagnostic light c Starts carryover timer i Flame and call for heat are monitored e Ifflame is lost and lockout timer has not expired R7184 will return to trial for ignition state e is lost and lockout timer has expired R7184 will enter the recycle state Recycle timer starts Burner motor and igniter and solenoid valve are turned off LED diagnostic light flashes slow Returns to idle state when recycle timer expires 60 seconds E Carryover timer expires 1 Enters run state a Igniter turns off Combustion continues until thermostat is satisfied or R7184 detects a loss of flame and enters into Recycle Mode F Thermostat is satisfied call for heat is terminated a R7184 shuts off burner motor and solenoid valve b LED diagnostic light is off c R7184 returns to idle state 20 gt IDLE STATE gt R71
46. here there is good natural air circulation and where the thermostat will be exposed to average room tem peratures Avoid locations where the thermostat will be exposed to cold drafts heat from nearby lamps and appliances exposure to sunlight heat from inside wall stacks etc Normal heat anticipator setting for the P LBX models is 0 1 A Normal heat anticipator setting for the P DHX models is 0 4 A For more precise adjustment the heat anticipator may be adjusted to the amperage draw of the heating control circuit as measured between the R and W terminals of the thermostat To re duce the risk of damaging the heat an ticipator do not measure circuit without first removing one of the two wires first To determine the heating circuit amper age draw 1 Disconnect one of the W wires from the thermostat terminal 2 Connect an ammeter between the wire and the thermostat terminal to which it was attached 3 Note the amperage reading when the heating contacts are closed System switch must be on HEAT if so equipped 4 Re connect the thermostat wire If the thermostat is serving a combina tion heating and air conditioning sys tem pay particular attention to polarity 5 When the thermostat is reconnected and re plumbed adjust the heat an ticipator setting to match the ob served amperage reading CIRCULATING AIR BLOWER Both P DHX and the P2LBX16F14501 furnace models are equip
47. iameters from the furnace breeching and installed in accordance to the instructions supplied with the regulator Table 3 Minimum Chimney Base Temperatures F Chimney Height ft Nozzle 11 20 28 36 Chimney Thermal Resistance lt R6 0 50 300 400 535 725 0 65 275 340 430 535 0 75 260 320 380 475 0 85 250 300 355 430 1 00 245 300 355 430 1 10 245 290 345 400 1 20 240 275 320 365 1 50 240 275 320 365 1 65 235 270 300 345 Chimney Height ft Nozzle 11 20 28 36 Chimney Thermal Resistance gt R6 0 50 185 200 220 250 0 65 175 185 205 220 0 75 175 185 195 210 0 85 165 185 195 205 1 00 165 185 195 205 1 10 165 185 195 205 1 20 165 180 190 200 1 50 165 175 185 195 1 65 165 175 180 190 lt less than gt greater than OIL TANK Oil storage tanks must be selected and installed in compliance with applicable codes in the United States NFPA 31 Standard for the Installation of Oil Burn ing Equipment Chapter 2 and in Can ada CAN CSA B139 Installation Code for Oil Burning Equipment Section 6 Observe all local codes and by laws In general the oil tank must be properly supported and remain stable in both empty and full condition The oil tank must be fitted with vent and supply pipes to the outdoors Refer to the above mentioned codes for sizing The vent pipe must be no less than 1 inches 1 5 and
48. ing but may pass through a wall where suitable fire protection provisions have been stalled In the United States refer to the latest edition of NFPA 31 for regulations governing the installation of oil burning equipment In Canada refer to the latest edition of CAN CSA B139 for rules gov erning the installation of oil burning equipment Fig 2 Common Chimney Problems l 11 115 O SA 5 Ash Dump for Fireplace MATO Table 2 Common Chimney Problems Refer to Figure 2 Top of chimney Extend chimney A lower than sur ob ti above all sur rounding ob servation rounding ob facts jects within 30 feet Chimney Cap Observation Remove or ventilator Make opening Coping restricts Observation as large as opening inside of chim ney Obstruction in chimney Joist protruding into chimney Break in chim ney lining Collection of soot at narrow space in flue opening Offset Two or more openings to the same chimney Loose seated pipe in flue opening Smoke pipe extends into chimney Failure to ex tend the length of flue partition to the floor Can be found by light and mirror reflecting conditions in chimney Lowering a light on an extension cord Smoke test build smudge fire blocking off other opening watching for smoke to es cape Lower light o
49. king into photo for room light leaking into cad cell compartment Repair light Furnace will not start cell compartment leak if necessary See Table C 2 Check for open limit or auxiliary limit Also check internal wiring connections loose connectors etc Check fuel oil supply Check that all hand operated fuel oil No fuel oil m pi valves are in the open position Fill oil storage tank if necessary Replace nozzle with high quality replacement Use rating plate Clogged nozzle or Tables in a A as a guide Clogged oil filter oil filter Replace oil tank filter or in line filter if used oil tank filter or in line filter if used Open safety switch Furnace will not start without first pushing oil primary control reset Connect pressure gauge to oil pump Adjust pump pressure or button Low oil pump pressure replace oil pump if necessary Ensure that erratic pressure read Happens on frequent ings are not caused by defective fuel oil line basis Air getting into fuel oil lines or Check fuel oil lines Replace any compression fittings found with fuel oil line dirty clogged or in high quality flared fittings Check for any signs of oil leaks Any some manner defective oil leak is a potential source of air or contaminants 4 Check burner motor If burner motor is cutting out on over load Defective burner motor determine why Replace if necessary If cad cell is dirty clean it Determine why cad
50. l wiring connections Tighten any loose connections and recheck If burner does not start replace R7184 Indicator light stays on Burner does not start Condition Burner starts then locks out on safety with indicator light flashing at 1 hz rate Y second on Y second off Reset oil primary control by pushing in and releas ing red reset button Listen for spark after burner turns on after 2 second delay Check indicator light after flame is established but before oil primary control locks out Check cad cell sighting for view of flame Disconnect line voltage power and open line switch Unplug cad cell and clean cad cell face with soft cloth Check sighting for clear view of flame Re place cad cell in socket Reconnect line voltage power and close line switch Start burner Continues on next page 24 Indicator light stops flashing Go to Step 7 Indicator light continues to Verify that the control is not in restricted mode See notes at flash at 1 Hz rate end of this table If not in restricted mode replace R7184 Spark ignitor could be defective Check for line voltage at ignitor terminals If line voltage is present replace R7484 Ignition is on but no oil is being sprayed into the com bustion chamber Ignition is off Wait for Valve ON delay to complete Check oil supply and oil line valve Check for filter blockage or seized oil pump Replace R7184 Go to
51. llation or application ques tions arise regulations prescribed in the National Codes and Local Regulations take precedence over the general in structions provided with this installation manual When in doubt please consult your local authorities All P DHX models are shipped assem bled pre wired ready for down flow op eration P DHX furnace models are air conditioning ready The furnace should be carefully inspected for damage when being unpacked The P2LBX16F14501 model is shipped assembled pre wired and ready for lowboy furnace applications The P2LBX16F14501 model is air condition ing ready The P4LBX20F 19001 is shipped in two pieces a furnace section and a blower section and must be assembled at the installation site Some field wiring is re quired The PALBX20F 19001 is shipped as a heating only furnace however air conditioning may be added with the addi tion of field installed controls HEAT LOSS To determine the correct furnace and firing rate for an application it is neces sary to calculate the maximum hourly heat loss of the building based on local design conditions In new construction the heat loss should be calculated on a room by room basis to enable proper sizing of the trunk and branch ductwork In retrofit applications a building shell overall heat loss calculation may be used In the United States Manual J titled Load Calculation published by the Air Conditioning Contractors of A
52. manufacturer s instruc tions All fuel systems should include an oil filler between the fuel oil storage tank and the oil burner For best results in stall the oil filter as close to the burner as possible When using an indoor oil tank the oil filler may be installed at the tank downstream from the shut off valve If firing the furnace under the 0 65 gph rate a 7 to 10 micron line filter should be installed as close to the oil burner as possible ELECTRICAL CONNECTIONS The furnace is listed by the Canadian Standards Association CSA All models except for the P4LBX20F 19001 are fac tory wired and require minimal field wir ing The P4LBX20F19001 model is pre wired except for the wiring connections to the blower motor The wires from the furnace section are routed through the grommet in the blower section blower division panel and then connected to the blower motor In the United States the wiring must be in accordance with the National Fire Protection Association NFPA 70 National Electrical Code and with local codes and regulations In Can ada all field wiring should conform to CAN CSA C22 1 Canadian Electrical Code Part 1 and by local codes where they prevail The furnace should be wired to a sepa rate and dedicated circuit in the main electrical panel however accessory equipment such as electronic air clean ers and humidifiers may be included on the furnace circuit Although a suitably located circuit
53. me owner etc G Be sure that the homeowner is familiar with the furnace The homeowner should be aware of the location of electrical circuit breaker or fuse the location of any electrical switches controlling the furnace the location of the oil tank shut off valve and how to operate the valve The home owner should be informed where the oil tank gauge is located and how to read it It would be beneficial to review safety issues with the home owner such as the danger of storing combustibles too close to the furnace hanging anything on the furnace vent pipe and especially the dangers of indiscriminately pressing the burner reset button IMPORTANT Be sure that the home owner knows where the burner reset switch is located and is aware that the reset switch is not to be activated more than once without a thorough look for the cause of the problem lack of fuel etc Be sure that the homeowner knows when to quit trying to start the furnace during these conditions and who to call for emergency service MAINTENANCE AND SERVICE A Routine Maintenance By Home Owner Other than remembering to arrange for the annual professional servicing of the furnace by the service or installation con tractor the most important routine ser vice performed by the homeowner is to maintain the air filter or filters A dirty filter can cause the furnace to over heat fail to maintain indoor temperature during cold weather increase fuel cons
54. ment damage INTRODUCTION Please read these instructions com pletely and carefully before installing and operating the furnace The furnace must be installed and set up by a qualified contractor Model P3DHX12F08001 is an oil fired forced air multi positional furnace with an output capacity range of 60 000 BTU Hr to 90 000 BTU Hr Model P2DHX16F12001 is an oil fired forced air multi positional furnace with an output capacity range of 91 000 BTU Hr to 128 000 BTU Hr These models may be installed in the down flow position as well as both horizontal positions Model P2LBX16F14501 is a rear breech lowboy model with an output range of 130 000 to 143 000 BTUH Model PALBX20F19001 is a rear breech low boy model with an output range of 168 000 to 188 000 BTUH All models are listed with the Canadian Standards Association CSA and com ply with the standards of both the United States and Canada for use with No 1 Stove and No 2 Furnace Oil In the United States the installation of the furnace and related equipment shall be installed in accordance with the regu lations of NFPA No 31 nstallation of Oil Burning Equipment as well as in accor dance with local codes In Canada the installation of the furnace and related equipment shall be installed in accordance with the regulations of CAN CSA B139 Installation Code For Oil Burning Equipment as well as in accordance with local codes When insta
55. merica ACCA describes a suitable procedure for calculating the maximum hourly heat loss In Canada the maximum hourly heat loss may be calculated in accordance with the procedures described in the manuals of the Heating Refrigeration and Air Conditioning Institute HRAI or by other method prescribed by authori ties having jurisdiction that are suitable for local conditions LOCATION OF UNIT The furnace should be located such that the flue connection to the chimney is short direct and consists of as few el bows as possible When possible the unit should be centralized with respect to the supply and return air ductwork A central location minimizes the trunk duct sizing Minimum installation clearances are listed in Table 1 NOTE The recommended installation clearances do not necessarily take into consideration the clearances necessary to replace the air filter or perform other routine maintenance Table 1 Clearance to Combustibles Furnace P2LBX P3DHX12F08001 P2DHX16F12001 Location Upflow Downflow Horizontal Downflow Horizontal Top 3 in 0 in 6 in 0 in 3 in Bottom 0 in 0 in 1 in 1 in 1 in S A Plenum 0 in 1 in 1 in 1 in 3 in 1 in 1 in Rear 1 in 1 in 1 in Sides 6 in 1 in 1 in 1 in 0 in Front 24 in 6 in 24 in 16 in 24 in Flue Pipe 9 in 9 in 9 in 9 in 9 in Enclosure Standard Closet
56. n extension cord Lower light on extension cord Found by in spection from basement Smoke test Measurement of pipe from within or obser vation of pipe by means of a lowered light By inspection or smoke test Use weight to break and dis lodge Must be han dled by compe tent masonry contractor Must be han dled by compe tent masonry contractor Clean out with weighted brush or bag of loose gravel on end of line Change to straight or to long offset The least im portant opening must be closed using some other chimney flue Leaks should be eliminated by cementing all pipe open ings Length of pipe must be re duced to allow end of pipe to be flush with inside of tile Extend partition to floor level Loose fitted Close all leaks M Smoke test clean out door with cement DRAFT REGULATOR CONTROL This device is used in conjunction with conventional chimney venting This control or draft regulator automatically maintains a constant negative pressure in the furnace to obtain maximum efficiency It ensures that proper pressures are not exceeded If the chimney does not develop sufficient draft the draft control cannot function properly The draft regulator must be installed within the same room or enclosure as the furnace and should not interfere with the combustion air supplied to the burner The control should be located a minimum of 3 flue pipe d
57. ped with a di rect drive blower system Direct drive blower speed adjustments are not nor mally required in properly sized extended plenum duct systems The motor RPM and air CFM delivery will vary automati cally to accommodate conditions within the usual range of external static pres sures typical of residential duct systems Under sized duct systems may require a higher blower speed to obtain a reason able system temperature rise Some older duct systems were not designed to provide static pressure They typically feature special reducing fittings at each branch run and lack block ends on the trunk ducts These systems may require modification to provide some resistance to the airflow to prevent over amping of the direct drive blower motor Selecting a lower blower speed may correct this problem Direct drive blower speeds are adjusted by changing the hot wires to the motor winding connections Please refer to wiring diagram in Appendix B or the wir ing diagram label affixed to the furnace THE NEUTRAL WIRE normally the white wire IS NEVER MOVED TO AD JUST THE BLOWER SPEED It is possible and acceptable to use a single blower speed for both heating and cooling modes The simplest method to connect the wiring from both modes is to use a piggy back connector accommo dating both wires on a single motor tap It is also acceptable to connect the se lected motor speed with a pigtail joined to both heating and cooling speed
58. q d 28 Filter Rail Assembly 2 Req d 29 Filter Support Top 30 Filter Support Front and Rear 2 Req d 31 Filter 2 Req d Disposable 20 x 25 x 1 Filter 2 Req d Permanent 207 25 x 1 32 Regulator Draft 7 33 Cover Casing Clean out 2 Req d 34 Blower Assembly 34A Housing and Wheel Blower 34B Motor Blower 34C Pulley Motor 34D Pulley Blower 34E Belt Fan 34F Base Feet Blower RH 34G Base Feet Blower LH 2 Panel Right Side Heating Compartment 3 Panel Left Side Blower Compartment 4 Panel Right Side Blower Compartment 5 Panel Upper Rear Blower Compartment 6 Panel Blower Partition 7 Panel Assembly Base Heating Compartment 8 Panel Assembly Base Blower Compartment 9 Panel Upper Rear Heating Compartment 10 Heat Exchanger Assembly 11 Firepot Bracket Assembly 12 Combustion Chamber Replacement 13 Clean out Cover Assembly Radiator 2 Req d 13A Yoke Assembly 13B Cover Clean out 13C Gasket Clean out Cover 14 Panel Front 14A Logo Bezel 14B Logo Label 15 Control Fan amp Limit 8 Insertion Set 200 Deg F 16 Box Junction 17 Holder 18 Fuse 15 19 Retainer Channel Wire 20 Access Panel Blower Door 20A Handle Door 21 Baffle Front Panel 22 Ba
59. s range between 70 F and 85 F If the venting from the furnace to the chimney is long or exposed to cold am bient temperatures it may be necessary to use L Vent as the vent connector to reduce stack temperature loss to prevent condensation The venting should be inspected annually to ensure that it is intact 9 FURNACE INSTALLATION SET UP The furnace must be set up as the final step in the installation A The oil burner must be set up follow ing the procedures outlined above B The furnace should operate within a temperature rise of 85 F 15 F To de termine the temperature rise measure the supply air and return air tempera tures when the furnace has reached steady state conditions This is the point at which the supply air temperature stops increasing relative to the return air tem perature The furnace may have to run 10 to 15 minutes to reach steady state conditions The measurements may be made with duct thermometers or thermo couples used in conjunction with multi meters with temperature measurement capabilities The return air should be measured at a point where the thermometer will be well within the air stream near the furnace return air inlet Actual location is not par ticularly critical however avoid locations where the temperature readings could be affected by humidifier bypass ducts the inside radius of elbows etc The supply air temperature should be measured at a point where the ther
60. s temporarily remove the fan belt Turn of electrical power to the furnace before working with the mo tor wires or fan belt Be sure to protect any removed wires from shorting out on metal furnace parts If the high limit test is successful shut off the electrical power to the furnace restore the proper motor wiring Finally restore power to the furnace E Adjust the Fan Off setting on the L6064A or L4064W fan limit controller In most cases the Fan Off temperature should be 90 to 100 F as indicated on the thermometer used to measure the supply air temperature Once the Fan Off setting has been established set the Fan Or setting In most cases the Fan On setting should be approximately 30 F higher than the Fan Off setting NOTE The L4064W fan limit controller has an auxiliary fan on function that activates when the thermostat is calling for heat The controller is designed to start the circulating fan in 20 to 30 sec onds Adjust the fan on setting on the controller dial 30 F higher than the fan off setting even though the circulating fan will normally be started by the auxil iary fan on function F Operate the furnace through a minimum of three full heating cycles During this time check for fuel oil leaks gross air leakage from the supply air ductwork unusual noises originating anywhere within the heating system which may cause some concern or an noyance to the ho
61. step 9 Go to step 10 System is OK Indicator light is on until the control locks out and starts flashing during lockout Indicator light stays off Indicator light stays off stays off Burner locks out Burner keeps running Table C 2 R7184 Troubleshooting continued from previous page 10 Check cad cell Indicator light is on Remount control onto burner housing Go to step 6 e Disconnect line voltage power and open line switch Remove existing cad cell and replace with new cad cell Disconnect all wires from thermostat terminals to en sure that there is no call for heat Indicator light is off Go to step 11 Reconnect line voltage power and close line switch Expose new cad cell to bright light such as a flash light Check cad cell bracket as Indicator light is on Replace cad cell bracket assembly sembly Disconnect line voltage power and open line switch Remove cad cell wires from quick connect connectors on the and leave control Indicator light is off Replace R7184 leadwires open Apply power to device Place jumper across cad cell terminals after burner motor turns on NOTE Restricted Mode Limited Reset In order to limit the accumulation of unburned oil in the combustion chamber the con trol can be reset only 3 times after which the control locks out The reset count returns to zero each time a call for heat is successfully completed To reset from RES
62. t start check the oil burner motor It may be seized or burned out Condition Burner starts then locks out on safety with indicator light flashing at 1 Hz rate 2 second on Y second off 1 2 3 Procedure Check that the limit switches are closed and contacts are clean Check for line voltage power at the oil primary control Voltage should be 120 vac nominal Check indicator light with burner off no call for heat no flame Continues on next page 23 Status Corrective Action Cad cell or controller is defective sees external light or Indicator light is on connections are shorted Go to step 4 Indicator light is off Go to step 5 Table C 2 R7184 Troubleshooting continued from previous page 4 5 Shield cad cell from exter nal light Jumper thermostat T T terminals on R7184 IMPORTANT First remove one thermostat lead wire Indicator light turns off Eliminate external light source or permanently shield cad cell Replace cad cell with new cad cell and recheck If indicator light does not turn off remove cad cell lead wires from R7184 and recheck If indicator light turns off replace cad cell bracket as sembly If indicator light does not turn off replace controller Trouble in thermostat or limit circuit Check thermostat or limit Burner starts A wiring connections Disconnect the line voltage power and open line switch Check al
63. umption and cause component failure The furnace filter s should be inspected cleaned or replaced monthly The fur nace is factory equipped with a semi permanent type filter If the filter is dam aged replace with filters of the same size and type During the routine service inspect the general condition of the furnace watching for signs of oil leaks in the vicinity of the oil burner soot forming on any external part of the furnace soot forming around the joints in the vent pipe etc If any of these conditions are present please advice your service or installation con tractor B Annual Service By Contractor THE Combustion chamber firepot IS FRAGILE use care when inspecting and cleaning this area The heat exchanger should be inspected periodically and cleaned if necessary if cleaning is necessary SHUT OFF POWER TO THE FURNACE and re move the burner Using a stiff brush with a wire handle brush off scale and soot from inside the drum and flue pipe To clean the heat exchanger radiator re move the covers on the front or inner front panel and then loosen the brass nuts on the radiator clean out yoke as sembly Do not remove the brass nuts The yoke assembly once loosened may be removed to gain access to the heat exchanger outer radiator 10 A wire brush can be used to loosen dirt and debris on the inside surfaces of the radiator Clean out all accumulated dirt soot and debris with a wire
64. urnace The electrode porcelains should be free of cracks the electrode tips should be tapered and free of burrs and the con tact rods must be clean and be in firm contact with the ignition transformer con tact springs The electrodes must not come into contact with the burner head OIL BURNER SET UP The burner air supply is adjusted to maintain the fuel to air ratio to obtain ideal combustion conditions A lack of air causes soft and sooty flames result ing in soot build up throughout the heat exchanger passages Excess combus tion air causes a bright roaring fire and high stack temperatures resulting in poor fuel efficiency PREPARATIONS Drill a 4 test port in the venting ideally at least 2 flue pipe diameters away from the furnace breeching if venting horizon tally from the furnace typically P LBX or from the flue pipe elbow if venting vertically typically P DHX before reach ing the furnace see Figures 4 and 5 Horizontal Flue Connection Draft regulator Location for sampling hole 1 4 diam Oil burner j E BB BSI 1 A B The test port will allow flue gas samples to be taken and stack temperatures to be measured Before starting the burner check the burner alignment with the combustion chamber fire pot check that the correct nozzle is tightened into place and that the burner electrodes are properly posi tioned The Beckett burner bulk air band shoul

York P2DHX16F12001 User's Manual

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