Allied Air Enterprises 4HP16LT manual Issue

Page 20

506468-01

Issue 1004

Page 20

Image 20

Contents 4HP16LT Series Installation Clearances Torque TableGeneral Fastener TorqueElectrical Wiring Slab MountingSlab Mounting Roof MountingWith Auxiliary Heat Thermostat DesignationsWithout Auxiliary Heat Brazing Connection Procedure Outside Unit Placement InstallationInstalling Refrigerant Line Refrigerant Line Sets Installing Horizontal Runs Refrigerant Line Sets Transition from Vertical to HorizontalFlushing Existing Line Set and Indoor Coil R22 refrigerant will be used to flush the systemFlushing Connections Manifold Gauge Set Liquid and Suction Line Service ValvesRefrigerant Metering Device Service Valve Ball Type Service Valve Valve OpenTo Open Liquid or Suction Line Service Valve To Close Liquid or Suction Line Service ValveEvacuation Refrigerant Charging Refrigerant Charge AdjustmentAmbient temperature Charge Using Weigh-In Method Cooling CycleR410A Temperature/Pressure Chart Blocking Outdoor CoilNormal Operating Pressures Check Charge Using Normal Operating Pressures Approach Values for TXV SystemsOperation Filter DrierDefrost Board Pressure Switch Connections Sensor Temp. / Resistance RangeDelay Mode Issue Defrost Control Board Diagnostic LEDs System Diagnostic Module Interpreting the Diagnostic LEDsFlash Codes LED Description24VAC Power Wiring Short CyclingMiswired Module Codes Miswired Module TroubleshootingThermostat Demand Wiring Maintenance Thermostat Operation Case of extended power outageHeat Pump Operation Preservice Check Start-Up and Performance Checklist CoolingHeating Sequence of OperationSingle Stage Wire Diagram Two Stage Wire Diagram