Lennox International Inc Merit Series 14ACX Units instruction

THERMAL PROTECTION

SWITCH (S5 OR S173)

HIGH PRESSURE SWITCH

(S4)

CRANKCASE HEATER (HR1)

CRANKCASE THERMOSTAT (S40)

Figure 17. Typical Factory Wiring Diagram (Interlink Compressor)

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14ACX SERIES

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Lennox International Inc Merit Series 14ACX Units, CONDENSING UNITS Typical Factory Wiring Diagram Interlink Compressor

Contents

Shipping and Packing List Table of ContentsGeneral Condensing Units Side View Unit Dimensions − Inches mm Model Number Identification AC X −024 − 230 −13 Typical Unit Parts Arrangement Using Manifold Gauge SET Operating Manifold Gauge Set and Service ValvesOperating Service Valves Torque Requirements 11 12 98 7 6 1DISCONNECT Power Recovering Refrigerant from Existing SystemRecovering Refrigerant 2CONNECT Manifold Gauge SET Clearance on ALL Sides Minimum Clearance Above Unit New Unit PlacementMinimum Clearance Between TWO Units Positioning Considerations Placing Unit on Slab Removing and Installing LouversRoof Mounting Step Mineral oils are not compatible with HFC−410A. If oil New or Replacement Line Set Refrigerant Line SET Alling InstallationVertical Runs NEW Construction Shown Refrigerant Line SET From Vertical to Horizontal Brazing Connections 1CUT and Debur Brazing Procedures Flow Nitrogen Wrap Service Valves6BRAZE Line SET 7PREPARATION for Next Step Flushing Line Set and Indoor Coil 2CONNECT Gauges and Equipment for Flushing Procedure Indoor Expansion Valve Installation Installing Indoor Metering DeviceSensing Bulb Installation Equalizer Line Installation Leak detector must be capable of sensing HFC refrigerant Leak Test Line Set and Indoor Coil Connect Gauge SET Evacuating Line Set and Indoor Coil 24VAC Transformer Electrical LOW Voltage Control Wiring Single Phase High Voltage / Ground Wires Typical 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 Refrigerant Start Determine how refrigerant is metered Checking AIR Flow AT Indoor Coil Below Calculating System Charge for Outdoor Unit Void of Charge HFC−410A Subcooling TXV Charge Superheat RFC Start Measure outdoor ambient temperature Problem exists with some component in the system Maintenance System OperationUnit Components Homeowner Start−Up and Performance Checklist