Lennox Elite 80 Series Скачать руководство пользователя страница 22 | Manualshive

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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 switch closes completing the circuit to the burner

motor.

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Содержание Elite 80 Series

Страница 1: ...furnaces use Beckett oil burners with heating capacities of 105 000 to 154 000 Btuh 30 8 kW to 45 1 kW OF24 units are suitable for residential or commercial application The drum type heat exchanger co...

Страница 2: ...203 12 x 9 305 x 229 Blower Data Blower pulley in mm 7 178 Belt size in mm 40 1016 41 1041 cfm L s at 20 in wg 50 Pa external static pressure 820 390 1170 550 1550 730 Number and size of filters in mm...

Страница 3: ...in mm 10 x 8 254 x 203 12 x 9 305 x 229 Blower Data Blower pulley in mm 7 178 Belt size in mm 41 1041 42 1067 cfm L s at 20 in wg 50 Pa external static pressure 1300 615 105 input 1220 575 120 input...

Страница 4: ...URNER INDOOR BLOWER BLOWER MOTOR OBSERVATION PORT CLEAN OUT PORT FLUE OPENING HEAT EXCHANGER COMBUSTION AIR INTAKE FIGURE 2 OF24 GENERAL PARTS ORIENTA TION CLEAN OUT PORT FAN LIMIT SWITCH BECKETT AFII...

Страница 5: ...identifies the burners used in Lennox units Figure 3 shows the typical layout of the burner assembly 1 Combustion Air Blower Pump Motor B6 The burner is activated by the primary control A com bustion...

Страница 6: ...OZZLE AIR SCOOP INLET WHEEL BLOWER FLANGE GASKET DOOR GASKET REAR ACCESS COUPLING OIL PUMP PLATE ESCUTCHEON NUT SPLINED DOOR ASSY REAR ACCESS ASSY HOUSING MAIN HOLE PLUG SCREWS AIR TUBE FLANGE ASSY EL...

Страница 7: ...in the O24 OF24 The firing rate dictates which head is used See table 1 The greater the FB number the larger the slots on the head When combustion takes place the flame will be cylindrical compact sha...

Страница 8: ...an air free fuel to the burner An oil filter is required for all models Use an oil filter of gener ous capacity for all installations Install filter inside the building between the tank shut off valve...

Страница 9: ...g g Single Stage Two Stage Single Stage Two Stage 0 0 0 m 84 25 6 m 93 28 3 m 100 30 5 m 100 30 5 m 2 0 6 m 73 22 3 m 85 25 9 m 100 30 5 m 100 30 5 m 4 1 2m 63 19 2 m 77 23 5 m 100 30 5 m 100 30 5 m 6...

Страница 10: ...not pass through a floor or ceiling Clear ances to single wall vent pipe should be no less than 6 152 mm more if local codes require it 8 The vent may pass through a wall where provisions have been m...

Страница 11: ...rements for exhaust vents and oil piping Combustion Air Requirements CAUTION Insufficient combustion air can cause headaches nausea dizziness or asphyxiation It will also cause excess water in the hea...

Страница 12: ...tilation the confined space shall be provided with two permanent openings One opening shall be within 12 305 mm of the top of the enclosure and one within 12 305 mm of the bottom These openings must...

Страница 13: ...from confined space to out side combustion air simply remove the three screws at taching the inlet air scoop to the burner and insert 4 102 mm direct air intake piping The use of a barometric relief p...

Страница 14: ...be located within 18 457 mm of the furnace vent outlet See figure 15 for barometric draft con trol location III START UP A Preliminary and Seasonal Checks 1 Inspect electrical wiring both field and f...

Страница 15: ...inimum FIGURE 16 AFII ELECTRODE TIP GAP To position the electrode tips beyond the face of the nozzle and above the center line position the gauge as shown in figure 17 Align the center mark with the n...

Страница 16: ...retention head burners Oil furnace installations also require careful inspection to make sure the chimney is in good condition and can ac commodate the products of combustion The temperature in uncon...

Страница 17: ...mbly will come out of the furnace There is adequate wire to remove the burner without disconnecting wires Once removed just turn the burner around in the vest panel area NOTE Before disassembling any...

Страница 18: ...rom the primary control If the motor and blower wheel only need to be removed to check and clean there is adequate wire in the motor wiring harness without disconnecting 3 Loosen two bolts securing mo...

Страница 19: ...atmosphere 3 With only the blower motor running and the evapora tor coil dry observe the manometer reading Adjust blower motor speed to deliver the air desired accord ing to the job requirements 4 Pr...

Страница 20: ...as described in section IV D Supply Air Blower 1 Disconnect power to unit 2 Check and clean blower wheel 3 Motors are prelubricated for extended life no further lu brication is required E Vent Pipe Th...

Страница 21: ...close energizing combustion air blower pump B6 3 When 1K2 closes the electronic ignitor is energized When 1K1 closes the solid state switch and cad cell are energized When the cad cell senses light t...

Страница 22: ...NCE 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...

Страница 23: ...RATION SEQUENCE 1 When 1K2 closes 120VAC is routed through the relay 2 The relay energizes the venter motor 3 After the venter motor establishes a draft the N O fan proving switch closes completing th...

Страница 24: ...lution Close all leaks with cement Problem Failure to extend the length of the flue partition down to the floor Detected by inspection or smoke test Solution Extend partition to floor level Problem Sm...

Страница 25: ...r leak around cover Be sure strainer cover screws are tightened securely Check for damaged cover gasket To determine the cause of improper cutoff insert a pressure gauge in the nozzle port of the fuel...

Страница 26: ...r auxiliary control switch open Open circuit between disconnect switch and limit control Low line voltage or power failure Defective internal control circuit Jumper terminals if burner starts switch i...

Страница 27: ...ll power company Properly ground transformer case Check voltage at power source Correct cause of voltage drop or call power company Motor does not come up to speed and trips out on overload Turn off p...

Страница 28: ...hermostat in warm air draft Dirty furnace air filters Blower running too slow Blower motor seized or burned out Blower wheel in backwards Wrong motor rotation Restrictions in return or supply air syst...

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