Lennox International Inc 4HP18LT manual Issue

Page 28

NOTES

506470-01

Issue 1007

Page 28

Image 28

Contents Save these instructions for future reference Lennox International Inc. CompanyInstallation Installation ClearancesGeneral Torque TableElectrical Wiring Slab MountingSlab Mounting Roof MountingInstalling Refrigerant Line Refrigerant PipingPlacement Outside Unit Placement & InstallationLine Set Isolation Refrigerant Line Set DiametersRefrigerant Line Sets Installing Horizontal Runs Refrigerant Line Sets Transition from Vertical to Horizontal Flushing Procedure Required EuipmentRefrigerant Metering Device Expansion Valve SystemsTo Access the Schrader Port To Close Liquid or Suction Line Service ValveUsing an Electronic Leak Detector EvacuationIssue START-UP Refrigerant Charge AdjustmentRefrigerant Charging Issue R410A Temperature/Pressure Chart Approach Values for TXV Systems Issue Operation Defrost Control Timing Pins Compressor DelayTime Delay Pressure Switch CircuitInterpreting the Diagnostic LEDs System Diagnostic ModuleLED Description 24VAC Power Wiring Thermostat Demand Wiring Miswired Module CodesMaintenance Temperature Setting Levers Inspect and clean outdoor coilHomeowner Information Fan Switch System SwitchTemperature Indicator Indicating LightStart-Up and Performance Checklist Wire Diagram Issue