506901−01
*P506901-01*
04/12
*2P0412*
Page 1
E
2012 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
IMPORTANT
This unit must be serviced annually by a licensed
professional technician, or equivalent.
WARNING
Improper installation, adjustment, alteration, ser-
vice, or maintenance can cause injury or property
damage. Refer to this manual. For assistance or
additional information, consult a licensed profes-
sional installer, or equivalent, or service agency.
WARNING
Do not store or use gasoline or other flammable va-
pors and liquids in the vicinity of this or any other ap-
pliance.
CAUTION
When venting this appliance, keep vent terminal free
of snow, ice and debris.
CAUTION
As with any mechanical equipment, personal injury
can result from contact with sharp sheet metal
edges. Be careful when you handle this equipment.
INSTALLATION
INSTRUCTIONS
ELO183UF SERIES UNITS
OIL UNITS
506901−01
04/2012
Table of Contents
General
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping & Packing
1
. . . . . . . . . . . . . . . . . . . . . . . . . .
ELO183UF Unit Dimensions
2
. . . . . . . . . . . . . . . . . . . . .
ELO183UF Start−Up & Performance Check List
2
. .
ELO183UF Unit Parts Arrangement
3
. . . . . . . . . . . . . . . .
ELO183UF Oil
Burner Parts Arrangement
3
. . . . . . . . .
Requirements
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combustion Air
5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locate & Level the Unit
6
. . . . . . . . . . . . . . . . . . . . . . .
Adjustments
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor Coil Placement
8
. . . . . . . . . . . . . . . . . . . . . . . .
Venting
8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flue Connections
9
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply & Return Air Plenums
10
. . . . . . . . . . . . . . . . .
Oil Supply Line Sizing
10
. . . . . . . . . . . . . . . . . . . . . . . .
Oil Supply Line & Filter Connections
12
. . . . . . . . . . .
Leak Check
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Wiring
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Start-Up & Adjustments
14
. . . . . . . . . . . . . . . . . .
Service
16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General
These instructions are intended as a general guide and do
not supersede local codes in any way. Only licensed pro-
fessional technicians, or equivalent, can install and service
the Lennox Elite
®
Series ELO183UF oil furnaces. In Cana-
da, refer to CSA B139 for recommended installation proce-
dures. Consult authorities who have jurisdiction before
installation.
CAUTION
Never burn garbage or paper in the heating system.
Never leave papers near or around the unit.
Shipping & Packing List
1 − Assembled oil furnace
1 − Barometric draft control
1 − Oil nozzle (used with ELO183UF−86, −114 and −150
only)
Check the components for shipping damage. If you find any
damage, immediately contact the last carrier.
Litho U.S.A.
