Manuals / Lennox International Inc / Household Appliance / Furnace

Lennox International Inc SL280UH090V36B TYPICAL SL280UHV FIELD WIRING DIAGRAM, FIGURE Page

Models: SL280UH090V36B SL280UH070V36A DAVE LENNOX SIGNATURE COLLECTION GAS FURNACE UPFLOW / HORIZONTAL AIR DISCHARGE SL280UH090V48B

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TYPICAL SL280UHV FIELD WIRING DIAGRAM

TYPICAL SL280UHV FIELD WIRING DIAGRAM

FIELD INSTALLED CLASS II 24V

FIELD INSTALLED LINE VOLTAGE

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Lennox International Inc SL280UH090V36B TYPICAL SL280UHV FIELD WIRING DIAGRAM, FIGURE Page, Field Installed Class

Contents

2P0611 Table of ContentsINSTALLATION INSTRUCTIONS SL280UHV P506763-01FRONT VIEW Unit Dimensions − inches mmTOP VIEW SIDE VIEWParts Arrangement PageShipping and Packing List Safety InformationSL280UHV Gas Furnace DANGERUse of Furnace as Construction Heater GeneralCombustion, Dilution & Ventilation Air Unconfined Space ALL AIR FROM OUTSIDE EQUIPMENT IN CONFINED SPACE ALL AIR FROM OUTSIDEEQUIPMENT IN CONFINED SPACE All Air Through Ventilated AtticSetting Equipment Return Air −− Upflow Applications SIDE VIEWRemoving the Bottom Panel Filters Duct SystemVenting UPFlow PositionFIGURE HORIZONTAL LEFT POSITION Horizontal PositionHORIZONTAL LEFT POSITION HORIZONTAL RIGHT POSITIONVENT CONNECTION Page Page Serving a Single Category I Appliance PageServing a Single Category I Appliance PageTABLE Common Vent Capacity TABLE Vent Connector CapacityServing Two or More Category I Appliances Serving Two or More Category I AppliancesTABLE Common Vent Capacity TABLE Vent Connector CapacityServing Two or More Category I Appliances Serving Two or More Category I AppliancesCARBON MONOXIDE POISONING HAZARD Gas Piping Leak Check Possible Gas Piping ConfigurationsFIGURE Horizontal Applications PageElectrical Thermostat Selection icomfort Touch Thermostat with SL280UHV COMMUNICATING SYSTEM WIRING 24V HUMIDIFIER CONNECTIONSNON−COMMUNICATING SYSTEM WIRING PagePage Page Page Page SL280UHV Schematic Wiring Diagram FIGURE PageFIELD INSTALLED LINE VOLTAGE TYPICAL SL280UHV FIELD WIRING DIAGRAMFIELD INSTALLED CLASS FIGURE PageRS−BUS OUTDOOR TB83 Integrated ControlRS−BUS LINK TB82, future use RS−BUS INDOOR TB84Heating Operation DIP Switch Settings TABLE Cooling Mode Blower Speed Ramping On−Board Links COOLING BLOWER DATAHEATING HEATINGCOOLING BLOWER DATAHEATING HEATINGCOOLING BLOWER DATAHEATING HEATINGHEATING BLOWER DATASL280UH090V48B BLOWER PERFORMANCE less filter COOLINGCOOLING BLOWER DATAHEATING HEATINGHEATING BLOWER DATAPage COOLINGCOOLING BLOWER DATAHEATING HEATINGHEATING BLOWER DATASL280UH110V60C BLOWER PERFORMANCE less filter COOLINGCOOLING BLOWER DATAHEATING HEATINGHEATING BLOWER DATASL280UH135V60D BLOWER PERFORMANCE less filter COOLINGTABLE OPERATING SEQUENCE PageTABLE OPERATING SEQUENCE PageUnit Start−Up Gas Pressure Adjustment Proper CombustionTABLE High Altitude Pressure Switch Kits High AltitudeTABLE Manifold Pressure Settings TABLE Honeywell Gas Valve Conversion KitsOther Unit Adjustments Heating Sequence of OperationHEATING OPERATION WITH TWO−STAGE THERMOSTAT Service SL280UHV BURNER, COMBUSTION AIR INDUCER ASSEMBLY SL280UHV NOX INSERTS Planned Service Repair Parts ListIntegrated Control Diagnostic Modes Integrated Control Diagnostic CodesIntegrated Control Diagnostic Codes continued Integrated Control Diagnostic Codes continued Reconfigure the system. Replace control if heatingIntegrated Control Diagnostic Codes continued CodeIntegrated Control Diagnostic Codes continued to the pressure switch openingIntegrated Control Diagnostic Codes continued CodeIntegrated Control Diagnostic Codes continued LSOM − Compressor open start circuitProgram Unit Capacity/Size Mode CLOSED WITHIN Troubleshooting Heating Sequence of OperationPRESSURE SWITCH SECONDS?CALL FOR SECOND−STAGE HEAT 3 CALL FOR HEAT SATISFIED2ND STAGE HEAT CALL FOR HEAT SATISFIEDFIRST−STAGE HEAT SECOND−STAGE HEAT 1ST STAGE HEATCALL FOR COOLING CALL FOR FAN 4GO TO CALL FOR COOLING1GO TO CALL FOR 1ST STAGE HEAT CALL FOR FAN