Lennox International Inc Dave Lennox Signature Collection XC17 Air Conditioner, 506510-01

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Figure 21. High Discharge Temperature Sensor Operation

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XC17 SERIES

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Contents General Table of ContentsShipping and Packing List AIR ConditionerSide View Access View Unit Dimensions − Inches mm and Parts ArrangementModel Number Identification Base with Elongated LegsControl BOX PLUMBING, Switches and Sensor ComponentsTypical Unit Parts Arrangement Using Manifold Gauge SET Operating Gauge Set and Service ValvesOperating Service Valves Torque RequirementsOperating Angle Type Service Valve To Access Service PortOperating Ball Type Service Valve Reinstall Stem CapRecovering Refrigerant from Existing System RecoveringClearance on ALL Sides Minimum Clearance Above Unit New Outdoor Unit PlacementMinimum Clearance Between TWO Units Positioning ConsiderationsRoof Mounting Elevating the UnitStabilizing Unit on Uneven Surfaces Elevated Slab Mounting using Feet Extenders Outside Unit PlacementSlab Mounting at Ground Level Stabilizing Unit on Uneven SurfacesAccess Panel Removal Removing and Installing PanelsAccess and Louvered Louvered Panel InstallationRefrigerant Line SET New or Replacement Line SetLine SET Brazing Flushing the System FlushingUncased Coil Shown Line SET and Indoor Coil 1Flushing Line SET and Indoor Coil 2 Sensing Bulb InstallationEqualizer Line Installation Installing Isolation Grommets Leak Testing the SystemLine SET and Indoor Coil Leak TestEvacuating the System Evacuating2INSTALL Thermostat Size Circuit and Install DisconnectElectrical 24VAC Transformer4ROUTE High Voltage and Ground Wires 3ROUTE Control WiresTypical XC17 Wiring Main Control AGE Main Control Jumpers and TerminalsFAN Main Control Jumpers and TerminalsFlat metal jumper Field Control WiringOn−board link Gauge SET Connections for Testing and ChargingServicing Units Delivered Void of Charge Unit Start−UpAction AirflowIndoor Coil Charge METHOD? Determine by WeighRequirements Calculating System Charge for Outdoor Unit Void of ChargeTest and Charge Method ApproachSubcooling HFC−410A Temperature Fahrenheit Psig Operating and Temperature PressuresSystem Operation Test Pins Function Ambient Sensor Temperature / Resistance Range High Discharge Sensor Temperature / Resistance Range Resetting LED Alert Codes Sensor Temperature / Resistance RangeMain Control LED Alert Codes System LED Alert CodesAlert Status Compressor LED Alert Codes Detected in RUN High Pressure Switch Operation Low Pressure Switch Operation High Discharge Temperature Sensor Operation Verifying Jumper Settings J2 MaintenanceFAN Motor Control and Start UP Verifying LED Status CodesFan Motor Board Unit LED Codes LED Codes and Sequence of OperationsControl Panel Testing for External Power to Fan Control Fan Motor Test Fan Motor Surge Protection Device FAN Motor Surge ProtectionStart UP Checks XC17 Start−Up and Performance ChecklistCooling Mode Subcooling