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1998 Lennox Industries Inc.
Litho U.S.A.
Corp. 9804-L4
O24/OF24
Service Literature
O24 / OF24 SERIES UNITS
O24 (Elite 80
) series units are heating only mid-efficiency
upflow oil furnaces manufactured with Beckett oil burners.
O24 units are available in heating capacities of 70,000 to
154,000 Btuh (20.5 to 45.1 kW). O24 units are suitable for resi
dential or commercial applications.
OF24 (Elite 80) series units are heating only mid-efficiency lo-
boy up-flow furnaces, which cime in front (OF24) or rear
(OF24R) flue openings. Both furnaces use Beckett oil burners
with heating capacities of 105,000 to 154,000 Btuh (30.8 kW to
45.1 kW). OF24 units are suitable for residential or commercial
application.
The drum type heat exchanger comes with strategically
placed ports allowing easy cleaning. The oil burner can be
easily removed for inspection and service. The mainte
nance section gives a detailed description on how this is
done.
Information contained in this manual is intended for use by
experienced HVAC service technicians only. All specifica
tions are subject to change. Procedures outlined in this
manual are presented as a recommendation only and do not
supersede or replace local or state codes.
O24 UPFLOW
OF24
REAR FLUE
MODEL
OF24
FRONT FLUE
MODEL
