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

Page 39

Figure 19. High Pressure Switch Operation

Page 39

XC17 SERIES

Image 39

Contents AIR Conditioner Table of ContentsGeneral Shipping and Packing ListBase with Elongated Legs Unit Dimensions − Inches mm and Parts ArrangementSide View Access View Model Number IdentificationPLUMBING, Switches and Sensor Components Typical Unit Parts ArrangementControl BOX Torque Requirements Operating Gauge Set and Service ValvesUsing Manifold Gauge SET Operating Service ValvesReinstall Stem Cap To Access Service PortOperating Angle Type Service Valve Operating Ball Type Service ValveRecovering Refrigerant from Existing System RecoveringPositioning Considerations New Outdoor Unit PlacementClearance on ALL Sides Minimum Clearance Above Unit Minimum Clearance Between TWO UnitsElevating 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 LevelLouvered Panel Installation Removing and Installing PanelsAccess Panel Removal Access and LouveredRefrigerant Line SET New or Replacement Line SetLine SET Brazing Line SET and Indoor Coil 1 FlushingFlushing the System Uncased Coil ShownSensing Bulb Installation Equalizer Line InstallationFlushing Line SET and Indoor Coil 2 Installing Isolation Grommets Leak Testing the SystemLine SET and Indoor Coil Leak TestEvacuating the System Evacuating24VAC Transformer Size Circuit and Install Disconnect2INSTALL Thermostat Electrical4ROUTE 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 Unit Start−Up Connections for Testing and ChargingGauge SET Servicing Units Delivered Void of ChargeAirflow Indoor CoilAction Calculating System Charge for Outdoor Unit Void of Charge WeighCharge METHOD? Determine by RequirementsApproach SubcoolingTest and Charge Method HFC−410A Temperature Fahrenheit Psig Operating and Temperature PressuresSystem 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 CodesAlert 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 UPFan 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 ProtectionXC17 Start−Up and Performance Checklist Cooling ModeStart UP Checks Subcooling