High Pressure Switch Operation | Lennox International Inc guide

Figure 19. High Pressure Switch Operation

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XC17 SERIES

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Lennox International Inc Dave Lennox Signature Collection XC17 Air Conditioner, 506510-01 High Pressure Switch Operation

Contents

AIR Conditioner Table of ContentsGeneral Shipping and Packing List Base with Elongated Legs Unit Dimensions − Inches mm and Parts ArrangementSide View Access View Model Number Identification PLUMBING, Switches and Sensor Components Typical Unit Parts ArrangementControl BOX Torque Requirements Operating Gauge Set and Service ValvesUsing Manifold Gauge SET Operating Service Valves Reinstall Stem Cap To Access Service PortOperating Angle Type Service Valve Operating Ball Type Service Valve Recovering Refrigerant from Existing System Recovering Positioning Considerations New Outdoor Unit PlacementClearance on ALL Sides Minimum Clearance Above Unit Minimum Clearance Between TWO Units Elevating the Unit Stabilizing Unit on Uneven SurfacesRoof Mounting Stabilizing Unit on Uneven Surfaces Outside Unit PlacementElevated Slab Mounting using Feet Extenders Slab Mounting at Ground Level Louvered Panel Installation Removing and Installing PanelsAccess Panel Removal Access and Louvered Refrigerant Line SET New or Replacement Line Set Line SET Brazing Line SET and Indoor Coil 1 FlushingFlushing the System Uncased Coil Shown Sensing Bulb Installation Equalizer Line InstallationFlushing Line SET and Indoor Coil 2 Installing Isolation Grommets Leak Testing the System Line SET and Indoor Coil Leak Test Evacuating the System Evacuating 24VAC Transformer Size Circuit and Install Disconnect2INSTALL Thermostat Electrical 4ROUTE High Voltage and Ground Wires 3ROUTE Control Wires Typical XC17 Wiring Main Control AGE Main Control Jumpers and Terminals FAN Main Control Jumpers and Terminals Flat metal jumper Field Control Wiring On−board link Unit Start−Up Connections for Testing and ChargingGauge SET Servicing Units Delivered Void of Charge Airflow Indoor CoilAction Calculating System Charge for Outdoor Unit Void of Charge WeighCharge METHOD? Determine by Requirements Approach SubcoolingTest and Charge Method HFC−410A Temperature Fahrenheit Psig Operating and Temperature Pressures System Operation Test Pins Function Ambient Sensor Temperature / Resistance Range High Discharge Sensor Temperature / Resistance Range System LED Alert Codes Sensor Temperature / Resistance RangeResetting LED Alert Codes Main Control LED Alert Codes Alert Status Compressor LED Alert Codes Detected in RUN High Pressure Switch Operation Low Pressure Switch Operation High Discharge Temperature Sensor Operation Verifying LED Status Codes MaintenanceVerifying Jumper Settings J2 FAN Motor Control and Start UP Fan Motor Board Unit LED Codes LED Codes and Sequence of Operations Control Panel Testing for External Power to Fan Control Fan Motor Test Fan Motor Surge Protection Device FAN Motor Surge Protection XC17 Start−Up and Performance Checklist Cooling ModeStart UP Checks Subcooling