Lennox International Inc O23V-120, O23V5-140, O23V5-154, O23V-70, O23V-90 O23V Series Burner Removal

Page 5

Neitherthenozzlesettingnortheairadjustmentsarefac- toryset.Thefurnaceisfiretestedandthelimitcontrolis checkedto makesureitfunctionsproperly;nofactoryset- tingsare made.Duringinstallation,thefurnacemustbe "setup."Theinstallingdealer/contractormusthaveand usepropertestequipmentinordertocorrectlysetupthe oilfurnacePropertestingequipmentisrequiredtoensure. correctoperationoftheunit.Theuseoftestequipmentis nowmorecriticalthaneverduetotightertolerancesneed- edto keepthefurnaceoperatingefficiently.

Amongthetestequipmentfor anoil furnace,theproper combustiontestkitshouldcontainthefollowing:

•Draftgauge

•CO 2 or 0 2 analyzer

•Smoke tester

•Pressure gauge

•High temperature thermometer

•Beckett T-500 gauge

•Oil vacuum gauge

•Knowledge of proper test equipment operation

O23V Series

Burner Removal

Loosen three nuts which at-

Rotate burner counterclockwise on

tach burner to vest panel.

slots then pull toward you,

Figure 4

To correctly adjust the nozzle, use a Beckett #T-500 gauge

Insert the small end of the gauge into the end of the cone and measure from the flat of the end cone to the tip of the nozzle. When nozzle depth is correct, the tip of the nozzle should just touch the end of the gauge. Refer to the illustra- tion sheet provided with the gauge. Note that the scale side of the gauge is not used for this purpose. Make corrections by sliding the nozzle assembly forward or backward within the blast tube (figure 5). At the same time, check the nozzle alignment.

Beckett Oil Burner Nozzle Adjustment

Burner must be removed from furnace for this procedure.

GAUGE

2

1

CAUTION

Adjusting the Nozzle

Proper adjustment d the nozzle assembly is critical be- cause alignment may have changed during shipping. Be- fore the furnace and oil lines are installed, the nozzle as- sembly must be checked. To check the nozzle assembly, remove the entire burner assembly (not just the nozzle) from the furnace. The lower firing nozzle is factory installed. This should be verified by the installer. Inspect the spark transformer leads also to ensure they are still at- tached to the electrodes.

The burner assembly is attached to the vestibule panel by three nuts. Slots are provided in the mounting flange for re- moving the burner assembly from the vestibule. By loosen- ing the nuts and by turning the whole burner assembly counterclockwise (figure 4), the entire burner assembly will come out of the furnace. There is adequate wire to re- move the burner without disconnecting wires. Once re- moved, turn the burner around in the vest panel area.

TO ADJUST NOZZLE:

1-Loosen screw.

2-Slide entire nozzle/electrode assembly back and forth until nozzle just touches the gauge.

Figure 5

To check nozzle alignment, again insert the small end into the end cone and measure the nozzle and electrode align- ment against the center lines marked on the gauge (again refer to enclosed illustration sheet). If the nozzle is not cen- tered, but found to be too far left or right, a new nozzle as- sembly will need to be ordered. Do not attempt to adjust by bending the 90 degree elbow in the oil line.

A WARNING

Page 5

O23V SERIES

Page 4 Page 6
Image 5
Page 4 Page 6
Contents Technical Unit Start-Up & Adjustments505,082M Blower ControlSupply TOP Flue Outlet Side Flue Outlet O23V Model4X4 Top of plenum & duct O23V Installation Clearances Inches mmCombustion Model NoO23V Series Burner Removal Beckett Oil Burner Nozzle AdjustmentMasonry Chimney Wall ThimbleFactory-built Chimney Shouldberepairedorreplaced,Accumulationof conAir from Outside Air from an Adjacent SpaceEquipment In Confined Space All Air From Inside Direct Connection of Outdoor Air for Combus- tion Equipment in Confined Space All Air From OutsideRemoval of Unit from Common Venting System Horizontal VentingAlternate Side Flue Connections Radiation Shield InstallationSystem Oil Piping One-Pipe SystemOil Filter restriction indicator gauge Micron replacement cartridge for filter, 45 gphOne-Pipe Systems 81 P89Blower Blower Control Board A54Control Board A54 YI ID12 DDZ3g fHeat Pump AdjustCfm Continuous FanModel O23V2/3-70/90 Units Model O23V3/4-105/120 UnitsLLL 023V Wiring DiagramPsig Adjusting Limit ControlServicing the Air Filter Servicing the Oil BurnerCauses Procedure Check thermostat settingsBurner Source Procedure CausesCorrection Replacethe fuseSource SourceProcedureCauses Correction Locate and secure connection PowerAfter burner fires Too little heat Source ProcedureToo much heat Owner Record ReplacementInstallation Data Start-Up Procedure

O23V2-90, O23V-90, O23V4-105, O23V5-154, O23V3-70 specifications

Lennox International Inc. is a leading provider of innovative climate control solutions, widely recognized for its high-quality heating, ventilation, and air conditioning (HVAC) systems. Among its varied product line, the O23 series exemplifies Lennox's commitment to energy efficiency, performance, and user-friendly technology.

The O23V2-90, O23V3-120, O23V3-90, O23V4-105, and O23V2-70 are advanced models of the O23 series, designed specifically for residential settings. Each model offers unique specifications tailored to meet diverse customer needs.

These units are equipped with cutting-edge inverter technology, which allows for precise control of air temperature and flow. By adjusting the compressor speed, these systems optimize energy consumption while maintaining comfort. This variable-speed operation minimizes energy waste and significantly reduces utility bills, a key advantage for homeowners seeking efficient solutions.

The O23V3-120 stands out for its high cooling and heating capacities, making it ideal for larger homes or commercial spaces. Meanwhile, the O23V2-70 model is designed for smaller applications, ensuring that even modest-sized spaces can benefit from Lennox quality. Each model also features robust insulation and construction, enhancing durability and performance over time.

Incorporating smart technology, these units come with Wi-Fi connectivity, empowering users to manage their home’s temperature remotely through a smartphone app. The integration with smart home systems further enhances the user experience, providing convenience and efficiency right at your fingertips.

Quiet operation is another hallmark of the O23 series. Each model is engineered to reduce sound levels, ensuring that comfort does not compromise peace within the home.

Additionally, these units are designed with environmentally-friendly refrigerants, aligning with global sustainability efforts. This focus on eco-conscious technology not only adheres to regulatory standards but also appeals to environmentally-aware consumers.

Overall, Lennox O23 series models showcase a blend of advanced technology, efficient performance, and user-friendly features, embodying the brand’s commitment to excellence in climate control solutions. For homeowners and businesses alike, investing in these models translates to greater comfort, cost savings, and a reduced ecological footprint.
Top Page Image Contents