Lennox o23v Manual Do Utilizador

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© 2005 Lennox Industries Inc.
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Specifications
. . . . . . . . . . . . . . . . . . . . . . . 
Parts Arrangement
. . . . . . . . . . . . . . . . . . 
I Unit Components
. . . . . . . . . . . . . . . . . . 
II Placement and Installation
. . . . . . . . . . 
III Start Up
. . . . . . . . . . . . . . . . . . . . . . . . . . 
IV Heating Systems Service Checks
. . . 
V Disassembling Burner
. . . . . . . . . . . . . . 
VI Typical Operating Characteristics
. . . 
VII Maintenance
. . . . . . . . . . . . . . . . . . . . . 
VIII Wiring Diagrams 
. . . . . . . . . . . . . . . . 
IX Troubleshooting 
. . . . . . . . . . . . . . . . . .