Lennox ELXA Series Unit Information

Service Literature
ELXA series blower−coil units are designed for upflow or
horizontal air and indoor applications only. ELXA blower
units are available in six models; 072, 090, 120, 150, 180
and 240. The units match up with ELXC condensing units
and ELXP heat pump units charged with HFC−410A re-
frigerant.
Information and specifications contained in this manual
are subject to change. Procedures outlined in this manual
are presented as a recommendation only and do not su-
persede or replace local or state codes.
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
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.
WARNING
Electric shock hazard! - Disconnect all power
supplies before servicing.
Replace all parts and panels before
operating.
Failure to do so can result in death or
electrical shock.
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.
UNIT INFORMATION
100069
April 20, 2023
ELXA SERIES AIR HANDLER UNITS
Page 1

Table of Contents

SPECIFICATIONS ..........................................................2
BLOWER DATA ..............................................................4
I - UNIT COMPONENTS ..............................................19
II − REFRIGERATION SYSTEM ..................................20
III − BLOWER SPEED & BELT TENSION ....................20
IV − Electric Heat Components ....................................21
Supply Air Inverter Startup............................................22
Verify Proper Operation ................................................23
Sequence of Operation ................................................24
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.
ELXA
6 - 20 TONS