Lennox International Inc CONDENSING UNITS Start−Up and Performance Checklist

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Start−Up and Performance Checklist

Job Name

 

Job no.

 

Date

Job Location

 

City

 

 

State

Installer

 

City

 

 

State

Unit Model No.

 

 

 

Serial No.

 

 

 

 

Service Technician

 

 

 

Nameplate Voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rated Load Ampacity

 

 

 

 

 

Compressor

 

 

 

 

Outdoor Fan

 

 

 

Maximum Fuse or Circuit Breaker

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electrical Connections Tight? -

 

Indoor Filter clean?

-

 

Supply Voltage (Unit Off)

 

 

 

Indoor Blower RPM

 

 

 

S.P. Drop Over Indoor (Dry)

 

 

 

Outdoor Coil Entering Air Temp.

 

 

Discharge Pressure

 

 

 

Suction Pressure

 

 

 

Refrigerant Charge Checked?

-

 

 

 

 

 

 

 

 

 

Refrigerant Lines:

Leak Checked?

- Properly Insulated? -

 

Outdoor Fan Checked?

-

 

 

 

 

 

 

 

 

 

 

 

 

Service Valves:

Fully Opened?

- Caps Tight?

-

 

 

 

Thermostat

 

 

 

 

 

 

 

 

 

 

 

 

Voltage With Compressor Operating

 

 

 

 

 

 

 

Calibrated? - Properly Set? - Level? -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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506645−01

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Contents General Table of ContentsShipping and Packing List Condensing UnitsUnit Dimensions − Inches mm Side ViewTypical Unit Parts Arrangement Model Number Identification AC X −024 − 230 −13Operating Service Valves Operating Manifold Gauge Set and Service ValvesUsing Manifold Gauge SET Torque Requirements11 12 98 7 6 Recovering Refrigerant Recovering Refrigerant from Existing System1DISCONNECT Power 2CONNECT Manifold Gauge SETMinimum Clearance Between TWO Units New Unit PlacementClearance on ALL Sides Minimum Clearance Above Unit Positioning ConsiderationsRoof Mounting Removing and Installing LouversPlacing Unit on Slab StepNew or Replacement Line Set Mineral oils are not compatible with HFC−410A. If oilVertical Runs NEW Construction Shown InstallationRefrigerant Line SET Alling Refrigerant Line SET From Vertical to HorizontalBrazing Connections Brazing Procedures 1CUT and Debur6BRAZE Line SET Wrap Service ValvesFlow Nitrogen 7PREPARATION for Next Step2CONNECT Gauges and Equipment for Flushing Procedure Flushing Line Set and Indoor CoilSensing Bulb Installation Installing Indoor Metering DeviceIndoor Expansion Valve Installation Equalizer Line InstallationLeak Test Line Set and Indoor Coil Leak detector must be capable of sensing HFC refrigerantEvacuating Line Set and Indoor Coil Connect Gauge SETElectrical 24VAC TransformerSingle Phase High Voltage / Ground Wires LOW Voltage Control WiringTypical Factory Wiring Diagram Copeland Compressor Typical Factory Wiring Diagram Interlink Compressor Unit Start−Up Connections for Testing and ChargingServicing Units Delivered Void of Charge System RefrigerantChecking AIR Flow AT Indoor Coil Start Determine how refrigerant is meteredCalculating System Charge for Outdoor Unit Void of Charge BelowHFC−410A Subcooling TXV Charge Start Measure outdoor ambient temperature Superheat RFCProblem exists with some component in the system Maintenance System OperationUnit Components Homeowner Start−Up and Performance Checklist