Lennox International Inc O23V4-105 Power, After burner fires, Locate and secure connection

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Source

Power

Source

Poor Fire

Flame Detector

Oil Supply

Procedure

If voltage fluctuates, fault is in the power source. Recheck voltage at the power source.

Procedure

After burner fires,

immediately jumper across flame detector

terminals at the primary control.

•If burner continues to run (does not lock out of safety), fault may be poor fire. Inspect fire.

•If fire is good, check for fault in flame detector

circuit.

•If burner loses flame (does not lock out on safety), fault is in the fuel system.

Listen for pump whine

Causes

Loose wiring connection

Low or fluctuating line voltage

Causes

Unbalanced fire

Too much air - - lean short fire

Too little air - - long dirty fire

Excessive draft

Too little draft or restriction

Dirty CAD cell face

Faulty CAD cell - - exceeds 15000 hms

Loose or defective cad cell wires

Pump loses prime - air slug

Pump loses prime - air leak in supply line

Water slug in line

Partially plugged nozzle or nozzle strainer

Restriction in oil line

Plugged fuel pump strainer

Cold oil - outdoor tank

Correction

Locate and secure connection.

Call power company.

Correction

Replace nozzle

Reduce combustion air - check combustion.

Increase combustion air - check combustion.

Adjust barometric damper for correct draft.

Correct draft or remove restriction.

Clean CAD cell face.

Replace CAD cell.

Secure connections or replace cad cell holder and wire leads.

Prime pump at bleed port

Check supply line for loose connections and tighten fittings.

Check oil tank for water (over 1 inch) pump or drain out water.

Replace nozzle.

Clear restriction.

Clean strainer or replace pump.

Change to number 1 oil.

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505082M 10_5

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Contents 505,082M Unit Start-Up & AdjustmentsTechnical Blower ControlO23V Model Supply TOP Flue Outlet Side Flue Outlet4X4 Combustion O23V Installation Clearances Inches mmTop of plenum & duct Model NoBeckett Oil Burner Nozzle Adjustment O23V Series Burner RemovalWall Thimble Masonry ChimneyShouldberepairedorreplaced,Accumulationof con Factory-built ChimneyEquipment In Confined Space All Air From Inside Air from an Adjacent SpaceAir from Outside Removal of Unit from Common Venting System Equipment in Confined Space All Air From OutsideDirect Connection of Outdoor Air for Combus- tion Horizontal VentingRadiation Shield Installation Alternate Side Flue ConnectionsOil Oil Piping One-Pipe SystemSystem One-Pipe Systems Micron replacement cartridge for filter, 45 gphFilter restriction indicator gauge 81 P89Control Board A54 Blower Control Board A54Blower YI ID12 DDZ3g fAdjust Heat PumpModel O23V2/3-70/90 Units Continuous FanCfm Model O23V3/4-105/120 Units023V Wiring Diagram LLLAdjusting Limit Control PsigServicing the Oil Burner Servicing the Air FilterProcedure Check thermostat settings CausesCorrection Source Procedure CausesBurner Replacethe fuseCauses Correction SourceProcedureSource After burner fires PowerLocate and secure connection Too much heat Source ProcedureToo little heat Installation Data Start-Up Procedure ReplacementOwner Record

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.
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