Lennox International Inc Merit Series 14ACX Units, CONDENSING UNITS installation instructions

Page 21

THERMAL PROTECTION

SWITCH (S5 OR S173)

HIGH PRESSURE SWITCH

(S4)

CRANKCASE HEATER (HR1)

CRANKCASE THERMOSTAT (S40)

Figure 17. Typical Factory Wiring Diagram (Interlink Compressor)

Page 21

14ACX SERIES

Image 21

Contents Shipping and Packing List Table of ContentsGeneral Condensing UnitsSide View Unit Dimensions − Inches mmModel Number Identification AC X −024 − 230 −13 Typical Unit Parts ArrangementUsing Manifold Gauge SET Operating Manifold Gauge Set and Service ValvesOperating Service Valves Torque Requirements11 12 98 7 6 1DISCONNECT Power Recovering Refrigerant from Existing SystemRecovering Refrigerant 2CONNECT Manifold Gauge SETClearance on ALL Sides Minimum Clearance Above Unit New Unit PlacementMinimum Clearance Between TWO Units Positioning ConsiderationsPlacing Unit on Slab Removing and Installing LouversRoof Mounting StepMineral oils are not compatible with HFC−410A. If oil New or Replacement Line SetRefrigerant Line SET Alling InstallationVertical Runs NEW Construction Shown Refrigerant Line SET From Vertical to HorizontalBrazing Connections 1CUT and Debur Brazing ProceduresFlow Nitrogen Wrap Service Valves6BRAZE Line SET 7PREPARATION for Next StepFlushing Line Set and Indoor Coil 2CONNECT Gauges and Equipment for Flushing ProcedureIndoor Expansion Valve Installation Installing Indoor Metering DeviceSensing Bulb Installation Equalizer Line InstallationLeak detector must be capable of sensing HFC refrigerant Leak Test Line Set and Indoor CoilConnect Gauge SET Evacuating Line Set and Indoor Coil24VAC Transformer ElectricalLOW Voltage Control Wiring Single Phase High Voltage / Ground WiresTypical Factory Wiring Diagram Copeland Compressor Typical Factory Wiring Diagram Interlink Compressor Servicing Units Delivered Void of Charge Connections for Testing and ChargingUnit Start−Up System RefrigerantStart Determine how refrigerant is metered Checking AIR Flow AT Indoor CoilBelow Calculating System Charge for Outdoor Unit Void of ChargeHFC−410A Subcooling TXV Charge Superheat RFC Start Measure outdoor ambient temperatureProblem exists with some component in the system Maintenance System OperationUnit Components Homeowner Start−Up and Performance Checklist