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,t_2005 Lennox industries Inc,
Dallas, Texas, USA
INSTALLATION
INSTRUCTIONS
O23V Series Units
OIL UNITS _ Technical
505,082M LL.L[ Publications
10/05 Litho U.S.A.
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
A IMPORTANT
O23V SERIES UNITS ARE NOT FOR USE IN
ZONING APPLICATIONS!
These instructions are intended as a general guide and do
not supersede local codes in any way. Only qualified tech-
nicians can install and service the Dave Lennox Signa-
ture'" Collection O23V oil furnaces. In Canada, refer to
CSA B139 for recommended installation procedures. Con-
sult authorities who have jurisdiction before installation.
General ...................................... 1
Shipping & Packing List ........................ 1
O23V Unit Dimensions ......................... 2
O23V Unit Parts Arrangement ................... 3
O23V Oil Burner PartsArrangement ................ 3
Requirements ................................. 4
Locate & Level the Unit ........................ 4
Unit Adjustments .............................. 5
Venting ...................................... 5
Flue Connections .............................. 10
Supply & Return Air Plenums ................... 10
Oil Supply Lines Sizing ......................... 10
Oil Supply Line & Filter Connections ............. 12
Leak Check ................................... 12
Electrical ..................................... 12
Blower Control ................................ 13
Unit Start-Up & Adjustments .................... 17
Service ...................................... 18
Heating Events Actions & Responses ............ 18
Troubleshooting ............................... 19
Oil Furnace Start-Up & Check List ............... 24
a WARNING
a WARNING
1 - Assembled oil furnace
1 - Barometric draft control
1 - Side exhaust pipe collar
1 - Direct intake collar (AFII burner units only)
Check the components for shipping damage. If you find
any damage, immediately contact the last carrier.
10/05
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