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Lennox Elite XC16

Lennox Elite XC16
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07/09 506101−01
*2P0709* *P506101-01*
Page 1
E2009 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
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.
CAUTION
Physical contact with metal edges and corners
while applying excessive force or rapid motion can
result in personal injury. Be aware of, and use
caution when working near these areas during
installation or while servicing this equipment.
IMPORTANT
This unit must be matched with an indoor coil as
specified in Lennox Engineering Handbook. Coils
previously charged with HCFC−22 must be
flushed.
IMPORTANT
The Clean Air Act of 1990 bans the intentional
venting of refrigerant (CFCs, HCFCs and HFCs) as
of July 1, 1992. Approved methods of recovery,
recycling or reclaiming must be followed. Fines
and/or incarceration may be levied for
noncompliance.
INSTALLATION
INSTRUCTIONS
Elite
®
Series XC16 Units
AIR CONDITIONER
506101−01
07/09
Supersedes 04/08
Table of Contents
Shipping and Packing List 1. . . . . . . . . . . . . . . . . . . . . .
XC16 Outdoor Unit 1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Dimensions 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Information 2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovering Refrigerant from Existing System 2. . . . .
Removing Existing Outdoor Unit 5. . . . . . . . . . . . . . . . .
Positioning New Outdoor Unit 5. . . . . . . . . . . . . . . . . . .
Removing and Installing Panels 5. . . . . . . . . . . . . . . . .
New or Replacement Line Set 8. . . . . . . . . . . . . . . . . . .
Brazing Connections 9. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Indoor Unit Metering Device 10. . . . . . . . . . .
Flushing System 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing New Indoor Unit Metering Device 12. . . . . . . .
Testing for Leaks 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evacuating the System 12. . . . . . . . . . . . . . . . . . . . . . . . .
Servicing Units Delivered Void of Charge 14. . . . . . . . .
Electrical Connections 15. . . . . . . . . . . . . . . . . . . . . . . . .
Start−Up, Testing and Charging Procedures 15. . . . . . .
System Operation 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Homeowner Information 21. . . . . . . . . . . . . . . . . . . . . . . .
Checklists 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping and Packing List
Check the unit for shipping damage and listed times below
are intact. If damaged, or if parts are missing, immediately
contact the last shipping carrier.
S Assembled outdoor unit
XC16 Outdoor Unit
The XC16 Air Conditioners, which will also be referred to in
this instruction as the outdoor unit, uses HFC−410A
refrigerant. This outdoor unit must be installed with a
matching indoor unit and line set as outlined in the XC16
Engineering Handbook. XC16 Air Conditioners are
designed for use in thermal expansion valve (TXV)
systems.
NOTE − The XC16 outdoor unit is rated for 230V
applications only. A hard-start kit is required for
applications where the supply voltage is less than 230V.
Litho U.S.A.
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Lennox Elite XC16 Specifications

General IconGeneral
BrandLennox
ModelElite XC16
CategoryAir Conditioner
LanguageEnglish

Summary

Operating Ball-Type Service Valve

Recovering HCFC-22 Refrigerant

Procedures for safely recovering HCFC-22 refrigerant from existing systems.

New or Replacement Line Set

Brazing Connections

Brazing POE Oil Warning

Warning about POE oils used with HFC-410A absorbing moisture and the need to keep the system sealed.

High Pressure Gas Warning

Brazing Alloys Caution

Cautionary advice on the hazards of brazing alloys and flux, and safety measures during brazing.

Fire Hazard Warning

Warning about potential ignition risks when applying a brazing torch to pressurized refrigerant lines.

Typical TXV Removal Procedure

Mineral Oil and Flushing Importance

Importance of flushing systems with mineral oil due to incompatibility with POE oils and HFC-410A.

EPA Refrigerant Venting Prohibition

EPA regulations prohibiting refrigerant venting and requiring approved recovery methods.

Flushing the System

Critical steps for flushing the line set and indoor coil with clean refrigerant.

Flushing System Requirement

Mandates flushing the line set and indoor coil with clean refrigerant before system operation.

Caution for Contaminated Systems

Caution against flushing systems containing contaminants like compressor burnout.

Required Equipment for Flushing

Testing for Leaks

Leak Detector Requirement

Specifies that the leak detector must be capable of sensing HFC refrigerant.

Refrigerant Harmful Warning

Warning about the dangers of inhaling refrigerant, emphasizing responsible use and recovery.

Fire and Explosion Hazard Warning

Warning against using oxygen for purging lines due to fire and explosion risks.

Evacuating the System

Equipment Damage Warning

Warning against deep vacuum operation and using compressors, which can cause damage and void warranty.

Micron Gauge Importance

Emphasizes the need for a calibrated micron gauge for accurate system evacuation measurements.

Electrical Connections

Electric Shock Hazard Warning

Warning about electric shock hazard from unit power supplies and the necessity of grounding.

Wiring Connections

Start-Up, Testing, and Charging Procedures

Comprehensive procedures for starting up, testing, and charging the system.

Crankcase Heater Start-Up Note

Advises pre-energizing the crankcase heater for 24 hours to prevent compressor slugging.

Setting Up to Check Charge

Steps for connecting manifold gauges and refrigerant cylinders to prepare for charge checking.

Delta-T Calculation for Airflow

Weigh In Method for TXV

Refrigerant Charge per Line Set Length

Table detailing specific refrigerant charge amounts based on line set diameter and length.

Subcooling Method for TXV

Procedure for charging the system using the subcooling method for TXV-equipped units.

Blocking Outdoor Coil for Subcooling

Method to block outdoor coil airflow to achieve specific pressures needed for subcooling checks.

Verify Charge with Approach Method

Advises using the Approach Method to verify correct refrigerant charge after adjustments.

Approach Method for TXV

Confirm Airflow for Approach Method

Ensuring proper indoor coil airflow is critical before performing the approach method.

Compare Unit Pressures with Table 2

Comparing measured unit pressures with Table 2 for normal operating pressure verification.

Set Thermostat for Heat Demand

Setting the thermostat to call for heat to establish a cooling load for testing.

Calculate Approach Temperature

Formula and steps to calculate the approach temperature (APP°) for system charging.

System Operation Overview

Maintenance Electric Shock Warning

Crucial warning to turn off electrical power before performing any maintenance on the unit.

Insufficient HeatingCooling Check Note

Two-Stage Compressor Performance Checks

Detailed checks for verifying part-load and full-load capacity of two-stage compressors.

Compressor Performance Check Validity

Conditions required for accurate performance checks of two-stage compressors, including airflow and charge.

Two-Stage Compressor Procedure

Step-by-step procedure to test the operational performance of two-stage compressors.

Checklists

Two-Stage Compressors Field Operational Checklist

Checklist for evaluating two-stage compressor performance during Y1 and Y2 demands.

System Refrigerant Charge Check

Instructions for checking system refrigerant charge using subcooling and approach temperatures.

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