Lennox International Inc. o23v User Manual

O23v, Warning, Important

Advertising

Page 1

Litho U.S.A.

Corp. 0609−L1

O23V

Service Literature

O23V SERIES UNITS

The O23V is a member of the DAVE LENNOX SIGNA-
TURE

t COLLECTION t. The O23V is an upflow oil fur-

nace equipped with a variable speed motor and manufac-
tured with a Beckett oil burner. The O23V is available in
heating capacities of 70,000 to 154,000 Btuh (20.5 to 45.1
kW) with AFUE up to 83% and cooling applications from 1
1/2 to 5 tons (5.3 through 17.6 kW). Refer to Engineering
Handbook for proper sizing.

The drum type heat exchanger comes with strategically
placed ports allowing easy cleaning, while the oil burner
can be 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.

WARNING

Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at discon-
nect switch(es). Unit may have multiple
power supplies.

WARNING

Improper installation, adjustment, alteration, ser-
vice or maintenance can cause property damage,
personal injury or loss of life. Installation and service
must be performed by a qualified installer or service
agency.

IMPORTANT

If using programmable thermostat, be sure to use
a type of thermostat that retains its memory in
event of a power loss.

TABLE OF CONTENTS

General

Page 1

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Specifications

Page 2

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Parts Arrangement

Page 3

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