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WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, service agency, or the gas supplier.
IMPORTANT
This unit must be matched with an indoor coil as specied
with AHRI. For AHRI Certied system match-ups and
expanded ratings, visit www.LennoxPros.com. Coils
previously charged with HCFC-22 must be ushed.
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing.
WARNING
To prevent serious injury or death:
1. Lock-out/tag-out before performing maintenance.
2. If system power is required (e.g., smoke detector
maintenance), disable power to blower, remove fan
belt where applicable, and ensure all controllers
and thermostats are set to the “OFF” position before
performing maintenance.
3. Always keep hands, hair, clothing, jewelry, tools, etc.
away from moving parts.
EL23XCV
Table of Contents
Model Number Identication ...........................................2
Typical Serial Number Identication ...............................2
Specications ................................................................3
Electrical Data ...............................................................3
Unit Dimensions – Inches (mm) ....................................4
Typical Unit Parts Arrangement ..................................... 5
Operating Gauge Set and Service Valves ......................8
Installation ....................................................................10
Unit Placement ............................................................10
Removing and Installing Panels ...................................13
New or Replacement Line Set ......................................14
Brazing Connections ...................................................17
Flushing Line Set and Indoor Coil ................................20
Leak Testing the System .............................................22
Evacuating Line Set and Indoor Coil ...........................24
Servicing Units Delivered Void of Charge ...................34
Unit Start-Up ...............................................................34
System Operation and Service ...................................35
Unit Selection Code for Outdoor Control ..................... 43
Conguring Unit ............................................................46
Reconguring Outdoor Control using S30/S40 Thermo-
stat ................................................................................47
System Overview..........................................................47
Diagnostic Information - Installations with S30/S40 Ther-
mostat ...........................................................................47
Installer Test - Installations with S30/S40 Thermostat .. 47
Maintenance .................................................................48
Unit Wiring Diagrams....................................................49
Unit Sequence of Operation ........................................50
Component Testing .......................................................53
6-Pin Sensor Harness (DIS, AMB, COIL) .................... 68
4-Pin Suction Temperature Sensor / Liquid Temperature
Sensor Harness ...........................................................68
System Refrigerant .......................................................76
Charge Mode Jumper ..................................................76
Service Literature
UNIT INFORMATION
Corp. 100040
February 14, 2023
EL23XCV (HFC-410A) SERIES OUTDOOR UNITS
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