Инструкция на Мазутные печи Lennox серии OHR...

Текст инструкции

1. Стр. 1 O23/OHR23

   OF23 Corp. 9535−L8 Revised 09/2003 Service Literature O23 / OHR23 / OF23 SERIES UNITS O23 (Elite 80) series units are mid−efficiency up-flow oil furnaces manufactured with Beckett oil burners. O23 units are available in heating capacities of 70,000 to 154,000 Btuh (20.5 to 45.1 kW) and cooling…

2. Стр. 2 SPECIFICATIONS − O23

   Model Number O23Q2-70 O23Q3-105/120 O23Q5-140/154 InputBtuh (kW) low/high 70,000 (20.5) 105,000 / 120,000(30.8 / 35.2) 140,000 / 154,000(41.0 / 45.1) Output Btuh (kW) low/high 57,000 (16.7) 85,000 / 97,000 (24.9 / 28.4) 113,000 / 125,000 (33.1 / 36.6) *A.F.U.E. Nozzle Rating gph (L/hr) and spray…

3. Стр. 3 SPECIFICATIONS − OF23

   OF23Q3-105/120 OF23Q3-105/120R OF23Q5-140/154 OF23Q5-140/154R InputBtuh (kW) low/high 105,000 / 120,000(30.8 / 35.2) 140,000 / 154,000(41.0 / 45.1) OutputBtuh (kW) low/high 85,000 / 97,000 (24.9 / 28.4) 113,000 / 125,000 (33.1 / 36.6) 82.4% / 81.5% 82.5% / 82.4% R Models 81.8% / 81.5% 82.0% / 81.8%…

4. Стр. 4 BLOWER PERFORMANCE DATA − OHR23

   OHR23Q3-105/120 BLOWER PERFORMANCE External Static Pressure OHR23Q5-140/154 BLOWER PERFORMANCE Air Volume at Various Speeds High Medium Air Volume at Various Speeds External Static Pressure Low High Medium Low in w.g. Pa cfm L/s cfm L/s cfm L/s in w.g. Pa cfm L/s cfm L/s cfm L/s .20 50 1470 695 1360…

5. Стр. 5 O23 GENERAL PARTS ORIENTATION

   HEAT EXCHANGER VENT OPENING CLEAN-OUT PORT LIMIT SWITCH CLEAN-OUT PORT CONTROL BOX WITH FAN CONTROL OBSERVATION PORT BECKETT AFII BURNER COMBUSTION AIR INTAKE BLOWER MOTOR INDOOR BLOWER CAPACITOR FIGURE 1 OHR23 GENERAL PARTS ORIENTATION CLEAN-OUT PORT HEAT EXCHANGER LIMIT SWITCH BLOWER MOTOR BECKETT…

6. Стр. 6 OF23 GENERAL PARTS ORIENTATION

   FILTER FRONT VENT OPENING (OF23) INDOOR BLOWER CLEAN-OUT PORT LIMIT SWITCH REAR VENT OPENING (OF23R) CONTROL BOX WITH FAN CONTROL HEAT EXCHANGER BECKETT AFII BURNER CLEAN-OUT PORT COMBUSTION AIR INTAKE OBSERVATION PORT FIGURE 3 BCC2 / BCC3 BLOWER CONTROL BOARD 120VAC LINE VOLTAGE IN 120VAC…

7. Стр. 7 I−UNIT COMPONENTS

   General parts orientation for the O23, OHR23 and OF23 are shown in figures 1, 2 and 3 respectively. The O23 and OF23 control box, burner, limit switch and clean-out ports may be accessed by removing the front access panel, while the OHR23 components are exposed. The blower can be accessed in the O23…

8. Стр. 8 Thermostat Connection

   BCC3 Blower Control Board (Figure 4) −3 and −4 units All O23, OHR23 and OF23−3 and −4 oil units utilize the BCC3 (A15) blower control manufactured by Heatcraft. The BCC3 is a printed circuit board which controls the supply air blower and monitors the limit controls and oil burner operation. The…

9. Стр. 9 ST9103A Blower Control Board (Figure 8)

   −5 units ST9103A Blower Control Board 120V All O23, OHR23 and OF23 −5 oil units utilize the ST9103A (A15) blower control manufactured by Honeywell. The ST9103A is a printed circuit board which controls the supply air blower and monitors the limit controls and oil burner operation. The control has a…

10. Стр. 10 −1THROUGH −4 UNIT OIL BURNER PARTS ARRANGEMENT

    AIR TUBE SCREWS FLANGE GASKET FLANGE HOLE PLUG AIR TUBE ASSY FOR FB HEADS RETAINING CLIP ELECTRONIC IGNITION TRANSFORMER MAIN HOUSING ASSY ESCUTCHEON PLATE CONNECTOR TUBE FB-HEAD HEAD INSULATOR NOZZLE ADAPTER NOZZLE LINE ELECTRODE HEAD ASSY. ELECTRODE ASSY BURNER CONTROL ELECTRONIC IGNITION…

11. Стр. 11 −5 UNIT BURNER PARTS ARRANGEMENT

    FLANGE GASKET ELECTRONIC IGNITION TRANSFORMER AIR TUBE SCREWS FLANGE AIR TUBE ASSY FOR FB HEADS RETAINING CLIP 1/4" HEX HEAD SCREW MAIN HOUSING ASSY ESCUTCHEON PLATE CONNECTOR TUBE FB−HEAD HEAD INSULATOR NOZZLE ADAPTER NOZZLE LINE ELECTRODE HEAD ASSY. ELECTRODE ASSY PEDESTAL PREMOUNTED PRE−PURGE…

12. Стр. 12 TABLE 4

    FURNACE / BURNER SPECIFICATIONS Unit Lennox Burner Part Number Burner Model *Initial Air Dial Setting Output Nozzle Size (Delevan) Pump Pressure Head -70 35K74 AFII 85 3.0 57,000 BTU (16.7 kW) 0.50 X 80A 100 psig (689.5 kPa) FB0 -105 35K75 AFII 85 4.0 84,000 BTU (24.6 kW) 0.65 X 80B 140 psig 965.3…

13. Стр. 13 TABLE 5

    5−Burner Control (A3) & Transformer (T1) −1 through −4 units The burner control, along with the matching cad cell, proves flame and controls the burner. After the cad cell closes a circuit to the burner control, the burner control de−energizes the safety switch heater to allow the unit to operate…

14. Стр. 14 9−Electronic Ignitor (A73)

    10−Gun Assembly The electronic ignitor provides the needed hot spark at the electrodes to ignite the fuel mixture. The ignitor is a solid state transformer . O23, OHR23 and OF23−1 through −4 units have 115V primary and 14,000V secondary windings. O23, OHR23 and OF23−5 units have 120V primary and…

15. Стр. 15 TABLE 7

    1.Blower Motor (B3) and Capacitor (C4) PRIMARY LIMIT CONTROL (S10) UNIT ACTUATES ON TEMP. RISE ACTUATES ON TEMP. FALL O23Q2−70 210F (99C) 180F (82C) O23Q3−105/120 220F (104C) 190F (88C) O23Q5−140/154 210F (99C) 180F (82C) OHR23Q3−105/120 240F (116C) 210F (99C) OHR23Q5−140/154 190F (88C) 160F (71C)…

16. Стр. 16 II−PLACEMENT AND INSTALLATION

    Air Vent Fill Pipe OIL PIPING ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ Make sure unit is installed in accordance with installation instructions and applicable codes. ONE-PIPE SYSTEM Fuel Unit…

17. Стр. 17 2− The vent connector should be as short as possible to

    do the job. B−Venting Considerations WARNING 3− The vent connector should not be smaller than the outlet diameter of the vent outlet of the furnace. Combustion air openings in front of the furnace must be kept free of obstructions. Any obstruction will cause improper burner operation and may result…

18. Стр. 18 17− Vent connectors serving this appliance shall not be

    connected into any portion of mechanical draft systems operating under positive pressure. MASONRY CHIMNEY BAROMETRIC CONTROL* (IN EITHER LOCATION) LINER 18− Keep the area around the vent terminal free of snow, ice and debris. NOTE−If vent pipe needs to exit from side of cabinet, use the cross hairs…

19. Стр. 19

    complete combustion which can result in sooting. Requirements for providing air for combustion and ventilation depend largely on whether the furnace is installed in an unconfined or confined space. EQUIPMENT IN CONFINED SPACE ALL AIR FROM INSIDE CHIMNEY OR OIL VENT Unconfined Space An unconfined…

20. Стр. 20 EQUIPMENT IN CONFINED SPACE

    ALL AIR FROM OUTSIDE (All Air Through Ventilated Attic) CHIMNEY OR OIL VENT CAUTION Combustion air openings in the front of the furnace must be kept free of obstructions. Any obstruction will cause improper burner operation and may result in a fire hazard or injury. VENTILATION LOUVERS (Each end of…

21. Стр. 21 3− Insofar as is practical, close all building doors and

    windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliances not connected to the common venting system. Turn on any exhaust fans, such as range hoods and…

22. Стр. 22 D−Extended Period Shutdown

    Turn off thermostat or set to UNOCCUPIED" mode. Close all shut-off valves in the oil supply line to guarantee no oil leaks into burner. Turn off all power to unit. All access panels, covers and vent caps must be in place and secured. IV−HEATING SYSTEM SERVICE CHECKS A−Oil Piping All oil supply…

23. Стр. 23 er for a short period and then turn off. The gauge shows

    cutoff pressure. OIL PUMP PRESSURE CHECK *PRESSURE GAUGE 2−Overfire Draft **REGULATE PRESSURE NOT SHOWN (beside the inlet port) PRESSURE GAUGE PORT (1/8" [3mm]) This test should be taken with the burner in operation. Remove the screw from the center of the center inspection port. Insert your draft…

24. Стр. 24 7−Stack Temperature

    Take a stack temperature reading in the vent connector pipe. Subtract the room air temperature from the stack temperature. This will give you the net stack temperature. Using efficiency charts provided in most CO2 analyzers you can tell at what efficiency the furnace is operating. IGNITION…

25. Стр. 25 3−Removing Gun Assembly

    5−Removing Motor / Combustion Air Blower 1− Loosen the screw to the back access door until door opens. See figures 30 and 31. 1− Disconnect supply line at pump and oil line at gun assembly as shown in figure 33. 2− Remove flare fitting nut on oil line at pipe adjusting plate located on outside of…

26. Стр. 26 VI−TYPICAL OPERATING CHARACTERISTICS

    A−Blower Operation and Adjustment NOTE− The following is a generalized procedure and does not apply to all thermostat controls. 1− Blower operation is dependent on thermostat control system. 2− Generally, blower operation is set at thermostat subbase fan switch. With fan switch in ON position…

27. Стр. 27 VII−MAINTENANCE

    C−Annual Burner Maintenance 1− Replace the oil supply line filter. CAUTION 2− Remove and clean the pump strainer if applicable. Never operate unit with access panels to the blower compartment off or partially open. 3− Replace the nozzle with an equivalent nozzle. 4− Check the pump pressure when…

28. Стр. 28 VIII−WIRING DIAGRAMS AND SEQUENCE OF OPERATIONS

    O23 / OHR23 / OF23−1 through −4 UNIT OPERATION SEQUENCE: 1. When disconnect is closed, 120V is routed to the blower control board BCC2 (A15). The BCC2 feeds line voltage to transformer (T1). 2. T1 supplies 24VAC to the burner control (A3). In turn, A3 supplies 24VAC to A15, which supplies the indoor…

29. Стр. 29

    O23 / OHR23 / OF23−5 UNIT OPERATION SEQUENCE: 1. When disconnect is closed, 120V is routed to the blower control board (A15). The blower control board feeds line voltage to transformer (T1). 2. When there is a call for heat, W1 of the thermostat energizes W of the A15 board with 24VAC. 3. A15…

30. Стр. 30

    3 2 TJERNLUND HORIZONTAL VENTING SYSTEM (SIDESHOT) OPERATION SEQUENCE: 1. When 1K2 closes, 120VAC is routed through the relay/timer, electronic ignitor (A73), and the limit switch. 2. The relay/timer energizes the venter motor. 3. After the venter motor establishes a draft, the N.O. fan proving…

31. Стр. 31 IX−TROUBLESHOOTING

    Burner failure or improper unit operation can be caused by various conditions. Often the problem can be solved by a logical process of checks and eliminations. The following pages lists a few common problems along with the solutions. Carefully check the most obvious items first before proceeding to…

32. Стр. 32 START

    YES BCC2 / BCC3 TROUBLESHOOTING FLOWCHART DOES UNIT OPERATE? NO IS 24VAC ACROSS R & C? NO CHECK: 1−UNIT POWER 2−TRANSFORMER 3−LIMIT SWITCH YES JUMPER ACROSS SCREWS R & G REPLACE BCC2 NO IS 120VAC ACROSS N & ACC? YES IS BLOWER RUNNING ON HIGH SPEED? NO IS 120VAC ACROSS N & A? CHECK BLOWER WIRING AND…

33. Стр. 33 Troubelshooting: Blower Control ST9103A

    Action Thermostat calls for heat. (W terminal is energized.) System Response ST9103A closes oil primary control T−T connections. Ignition system and oil primary control start the furnace. Oil flows as long as oil primary control senses flame. Burner motor is energized and heat fan on delay timing…

34. Стр. 34 Troubleshooting O23 / OHR23 / OF23 −1 through −4 Units

    Burner fails to start. Source Thermostat Safetyy Overloads Power Thermostat CAD Cell Primary Control Burner Procedure Check thermostat settings. Check burner motor, primary safetyy control, & auxiliaryy limit it h switch. Check furnace disconnect switch & main disconnect. Touch jumper wire across…

35. Стр. 35 Burner starts, but no flame is established

    Source Oil Supply Procedure No oil in tank Fill tank. Coat dip stick with litmus paste and insert into bottom of tank. Water in oil tank If water depth exceeds 1 inch, pump or drain water. Listen for pump whine. Tank shut−off valve closed Open valve. Oil line filter is plugged Replace filter…

36. Стр. 36 Burner starts and fires, but locks out on safety

    Source Procedure If burner continues to ti t run, this may be due to poor fire. Inspect fire. Poor Fire Flame Detector After burner fires, immediately jumper across flame detector terminals at the primary control. control Correction Unbalanced fire Replace nozzle Too much air − −lean short fire…

37. Стр. 37 Burner starts and fires, but short cycles (too little heat)

    Source Thermostat Limit Control Power Procedure Causes Check thermostat. Correction Heat anticipator set too low Correct heat anticipator setting. Vibration at thermostat Correct source of vibration. Thermostat in the path of a warm air draft Shield thermostat from draft or relocate. Dirty furnace…

38. Стр. 38 Burner runs continuously cont

    Source Procedure Causes Low CO2 less than 10%. Correction Too much combustion air Reduce combustion air. Air leaks into heat exchanger around inspection door, etc. Correct cause of air leak. Excessive draft Adjust barometric draft control for correct draft. Incorrect burner head adjustment Correct…

39. Стр. 39 Troubelshooting O23 / OHR23 / OF23 −5 Units Cont

    CONDITION 2: BURNER STARTS, THEN LOCKS OUT ON SAFETY WITH LED FLASHING 1/2 SECOND ON 1/2 SECOND OFF 2.1 Check limit switch contacts are closed and clean. Clean contacts. Replace limit switch if necessary. 2.2 Check for line votage at oil primary control. Voltage should be 120V Check primary voltage…

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