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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
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.
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.
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
ELA Supply Air Inverter Startup .................................... 22
Verify Proper Operation ................................................ 23
V - Wiring Diagrams .....................................................24
ELA
6 – 20 TONS
Service Literature
UNIT INFORMATION
Corp. 1810-L3
February 15, 2019
ELA SERIES AIR HANDLER UNITS
Lennox ELA model blower−coil units are designed for
upow or horizontal air and indoor applications only.
ELA blower units are available in six models; 072, 090,
120, 150, 180 and 240. The units match up with Lennox
ELS condensing units and Lennox ELP heat pump units
charged with HFC−410A refrigerant.
Information and specications 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.
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