Lennox International Inc Merit Series 14ACX Units Typical Unit Parts Arrangement

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Typical Unit Parts Arrangement

 

NOTE

 

CONTROL

DUAL RUN

THERMAL SWITCH

 

(S173) (−036 AND

 

CAPACITOR

 

−060 ONLY)

 

(C12)

 

 

GROUND LUG

DISCHARGE LINE

COMPRESSOR

HARNESS

CONNECTION CONTACTOR

(K1)

OUTDOOR COIL

CUTOUT FOR HIGH

VOLTAGE CONDUIT

CONTROL WIRE LOOP

CRANKCASE HEATER THERMOSTAT (S40) SEE NOTE

LIQUID LINE SERVICE VALVE

NOTE − −041, −047, −048, −059 and −060 only are equipped with crankcase thermostat (S40) and crankcase heater (HR1).

COMPRESS0R (B1)

CRANKCASE HEATER

(HR1) SEE NOTE

SUCTION LINE SERVICE VALVE

HIGH PRESSURE SWITCH (S4)

Figure 1. Typical Unit Parts Arrangement

Model Number Identification

14 AC X02423013

Nominal SEER

Unit Type

AC = Air Conditioner

Refrigerant

X = R−410A

Minor Revision Number

Voltage

230 = 208/230V−1phase−60hz

Cooling Capacity − Tons

018 = 1.5

024 = 2

030 = 2.5

036 = 3

041 = 3.5

042 = 3.5

047 = 4

048 = 4

059 = 5

060 = 5

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14ACX SERIES

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Contents Condensing Units Table of ContentsShipping and Packing List GeneralSide View Unit Dimensions − Inches mmModel Number Identification AC X −024 − 230 −13 Typical Unit Parts ArrangementTorque Requirements Operating Manifold Gauge Set and Service ValvesUsing Manifold Gauge SET Operating Service Valves11 12 98 7 6 2CONNECT Manifold Gauge SET Recovering Refrigerant from Existing System1DISCONNECT Power Recovering RefrigerantPositioning Considerations New Unit PlacementClearance on ALL Sides Minimum Clearance Above Unit Minimum Clearance Between TWO UnitsStep Removing and Installing LouversPlacing Unit on Slab Roof MountingMineral oils are not compatible with HFC−410A. If oil New or Replacement Line SetRefrigerant Line SET From Vertical to Horizontal InstallationRefrigerant Line SET Alling Vertical Runs NEW Construction ShownBrazing Connections 1CUT and Debur Brazing Procedures7PREPARATION for Next Step Wrap Service ValvesFlow Nitrogen 6BRAZE Line SETFlushing Line Set and Indoor Coil 2CONNECT Gauges and Equipment for Flushing ProcedureEqualizer Line Installation Installing Indoor Metering DeviceIndoor Expansion Valve Installation Sensing Bulb 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 System Refrigerant Connections for Testing and ChargingServicing Units Delivered Void of Charge Unit Start−UpStart 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