Lennox International Inc Official Manual for the Lennox XC17 Air Conditioner: Installation and Maintenance

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E2010 Lennox Industries Inc.

Dallas, Texas, USA

NOTICE

A thermostat is not included and must be ordered separately.

The Lennox ComfortSense® 7000 thermostat may be used, as well as other thermostats.

In all cases, setup is critical to ensure proper system operation.

Field wiring is illustrated in diagrams, which begin on Page 19.

WARNING

Improper installation, adjustment, alteration, service or maintenance can cause personal injury, loss of life, or damage to property.

Installation and service must be performed by a licensed professional installer (or equivalent) or a service agency.

General

This single−stage outdoor unit is designed for use with HFC−410A refrigerant only. This unit must be installed with an approved indoor air handler or coil. See the Lennox XC17 Engineering Handbook for approved indoor component matchups.

IMPORTANT

This model is designed for use in expansion valve systems only. An indoor expansion valve approved for use with HFC−410A refrigerant must be ordered separately, and installed prior to operating the system.

INSTALLATION

INSTRUCTIONS

Dave Lennox Signature® Collection XC17 Units

AIR CONDITIONER

506510−01

04/10Litho U.S.A. Supersedes 506498−01

RETAIN THESE INSTRUCTIONS FOR FUTURE

REFERENCE

TABLE OF CONTENTS

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Shipping and Packing List . . . . . . . . . . . . . . . . . . . . . . 1 Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Model Number Identification . . . . . . . . . . . . . . . . . . . . 2 Unit Parts Arrangement . . . . . . . . . . . . . . . . . . . . . . . . 3 Operating Gauge Set and Service Valves . . . . . . . . . 4 Recovering Refrigerant from Existing System . . . . . 6 New Outdoor Unit Placement . . . . . . . . . . . . . . . . . . . 7 Removing and Installing Panels . . . . . . . . . . . . . . . . . 10 New or Replacement Line Set . . . . . . . . . . . . . . . . . . . 11 Flushing the System . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Leak Testing the System . . . . . . . . . . . . . . . . . . . . . . . 16 Evacuating the System . . . . . . . . . . . . . . . . . . . . . . . . . 16 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Main Control Jumpers and Terminals . . . . . . . . . . . . . 22 Field Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Servicing Unit Delivered Void of Charge . . . . . . . . . . 26 Unit Start−Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 System Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Operating and Temperature Pressures . . . . . . . . . . . 30 System Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Main Control LED Alert Codes . . . . . . . . . . . . . . . . . . 35 Maintenance (Dealer and Homeowner) . . . . . . . . . . . 42 Start−Up and Performance Checklist . . . . . . . . . . . . . 48

Shipping and Packing List

Check unit for shipping damage. Consult last carrier immediately if damage is found.

1 door unit.

1

1 age wiring)

2 Isolation grommets for liquid and suction lines

04/10

Page 1

506510−01

*2P0410*

*P506510-01*

 

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Contents General Table of ContentsShipping and Packing List AIR ConditionerSide View Access View Unit Dimensions − Inches mm and Parts ArrangementModel Number Identification Base with Elongated LegsTypical Unit Parts Arrangement PLUMBING, Switches and Sensor ComponentsControl BOX Using Manifold Gauge SET Operating Gauge Set and Service ValvesOperating Service Valves Torque RequirementsOperating Angle Type Service Valve To Access Service PortOperating Ball Type Service Valve Reinstall Stem CapRecovering Refrigerant from Existing System RecoveringClearance on ALL Sides Minimum Clearance Above Unit New Outdoor Unit PlacementMinimum Clearance Between TWO Units Positioning ConsiderationsStabilizing Unit on Uneven Surfaces Elevating the UnitRoof Mounting Elevated Slab Mounting using Feet Extenders Outside Unit PlacementSlab Mounting at Ground Level Stabilizing Unit on Uneven SurfacesAccess Panel Removal Removing and Installing PanelsAccess and Louvered Louvered Panel InstallationRefrigerant Line SET New or Replacement Line SetLine SET Brazing Flushing the System FlushingUncased Coil Shown Line SET and Indoor Coil 1Equalizer Line Installation Sensing Bulb InstallationFlushing Line SET and Indoor Coil 2 Installing Isolation Grommets Leak Testing the SystemLine SET and Indoor Coil Leak TestEvacuating the System Evacuating2INSTALL Thermostat Size Circuit and Install DisconnectElectrical 24VAC Transformer4ROUTE High Voltage and Ground Wires 3ROUTE Control WiresTypical XC17 Wiring Main Control AGE Main Control Jumpers and TerminalsFAN Main Control Jumpers and TerminalsFlat metal jumper Field Control WiringOn−board link Gauge SET Connections for Testing and ChargingServicing Units Delivered Void of Charge Unit Start−UpIndoor Coil AirflowAction Charge METHOD? Determine by WeighRequirements Calculating System Charge for Outdoor Unit Void of ChargeSubcooling ApproachTest and Charge Method HFC−410A Temperature Fahrenheit Psig Operating and Temperature PressuresSystem Operation Test Pins Function Ambient Sensor Temperature / Resistance Range High Discharge Sensor Temperature / Resistance Range Resetting LED Alert Codes Sensor Temperature / Resistance RangeMain Control LED Alert Codes System LED Alert CodesAlert Status Compressor LED Alert Codes Detected in RUN High Pressure Switch Operation Low Pressure Switch Operation High Discharge Temperature Sensor Operation Verifying Jumper Settings J2 MaintenanceFAN Motor Control and Start UP Verifying LED Status CodesFan Motor Board Unit LED Codes LED Codes and Sequence of OperationsControl Panel Testing for External Power to Fan Control Fan Motor Test Fan Motor Surge Protection Device FAN Motor Surge ProtectionCooling Mode XC17 Start−Up and Performance ChecklistStart UP Checks Subcooling