Lennox XC25-024-230-01 User Manual

1
2013 Lennox Industries Inc.
Corp. 1253-L11
July 24, 2013
XC25
INSTALLATION AND SERVICE
PROCEDURE
Service Literature
Dave Lennox Signature
®
Collection XC25 Series Units
IMPORTANT
XC25 units have refrigerant piping requirements that are unique to
this unit. Size and install the refrigerant piping per table 2 (page 14)
to ensure proper unit operation.
This unit is an integral component of a system that requires an
iComfort Wi-Fi
®
thermostat and iComfort
™
-enabled air handler
or furnace.
XC25
iComfort Wi-Fi
®
iComfort
™
-enabled
air handler or
furnace
IMPORTANT:
Before applying any power (main, solar or low voltage) to the
outdoor unit, confirm the iComfort Wi-Fi
®
thermostat has
software Version 2.1 or higher installed. (Reference the iComfort
Wi-Fi
®
thermostat manual.)
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.
WARNING
Electrical Hazard
High Voltage
Wait 5 Minutes
Electrical components may hold charge. Do
not remove this panel or service this area for
5 minutes after the power has been removed.
TABLE OF CONTENTS
I. OVERVIEW
Model Number Identification 2....................
Typical Serial Number Identification 2..............
Specifications 2.................................
Electrical Data 3................................
Unit Dimensions 4..............................
Typical Unit Parts Arrangement 5.................
Operating Service Valves 7.......................
General 7.....................................
II. INSTALLATION
Unit Placement 9...............................
Removing and Installing Panels 12.................
New or Replacement Line Set 13..................
Brazing Connections 16...........................
Flushing the System 19...........................
Leak Testing the System 21.......................
Evacuating the System 21.........................
Electrical 24.....................................
Servicing Unit Delivered Void of Charge 29..........
Unit Start-Up 29.................................
III. SYSTEM OPERATION AND SERVICE
7-Segment Alert and System Status Codes 30.......
Outdoor Control Push-Button Operation 35..........
Configuring Unit 39...............................
Reconfiguring Outdoor Control using iComfort Wi-Fi
®
Thermostat 40...................................
System Overview 40.............................
Maintenance 41..................................
SunSource
®
Home Energy System 41..............
Unit Wiring Diagrams 42..........................
Factory Wiring Diagrams 45.......................
Unit Sequence of Operations 47...................
Component Testing 50............................
System Refrigerant 69............................
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.

Lennox XC25-024-230-01 Specifications

General

Energy Efficiency Ratio (EER)	13.5
Seasonal Energy Efficiency Ratio (SEER)	26
Refrigerant	R-410A
Voltage	230V
Phase	1
Frequency	60 Hz
Stages	Variable
Cooling Capacity	24000 BTU/h
Sound Level (Outdoor Unit)	59 dB

Summary

Overview

Specifications

Lists technical specifications including sound rating, refrigerant charge, and fan details.

Electrical Data

Provides detailed electrical information like current, voltage, and power ratings for components.

Unit Dimensions

Shows physical dimensions with diagrams and measurements for the outdoor unit.

Installation

Unit Placement

Covers positioning considerations, clearances, and slab requirements for unit installation.

Line Set Installation

Details installation practices for refrigerant line sets, including isolation and routing.

Flushing the System

Outlines the process for flushing line sets and indoor coils, especially for refrigerant conversion.

Evacuating the System

Explains critical steps for creating a deep vacuum in the system using vacuum pump and micron gauge.

System Operation and Service

7-Segment Alert and System Status Codes

Lists and explains error codes displayed on the 7-segment display for system diagnostics.

Unit Wiring Diagrams

Presents wiring diagrams for different unit models to aid troubleshooting and installation verification.

Unit Sequence of Operations

Illustrates the overall unit operation sequence, including power-up and component interactions.

Component Testing

Covers testing procedures for key components like pressure switches, compressor, and sensors.

System Refrigerant

Weigh-In Charging Method

Details the procedure for weighing in the initial refrigerant charge based on line set length.

Subcooling Charging Method

Explains how to verify refrigerant charge using the subcooling method for system setup.