Lenoxx Electronics Furnace O23V User Manual

o23v oil furnace up to 83% afue  
Home Comfort Systems  
O23V  
Variable speed for superior comfort  
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Quiet  
Healthier  
Efficient  
exclusive silentcomfort™  
technology maximizes your  
comfort while minimizing sound  
The variable speed motor ramps up  
to speed slowly, so there’s no sudden  
blast of air at startup. A specially  
insulated cabinet further reduces  
operating sound.  
slowly circulates air for better  
indoor air quality  
delivers significant energy  
savings all year  
When you set your thermostat to  
“FAN,” the Oꢀ3V continues to  
slowly circulate air throughout your  
home. That means you can run the  
fan constantly without substantially  
increasing operating costs.  
The Oꢀ3V has a heating efficiency  
of up to 83% AFUE. Compared to  
an older furnace, the Oꢀ3V can  
dramatically reduce your utility bills.  
As an added benefit, the Oꢀ3V’s  
variable speed motor uses about  
two-thirds less electricity than a  
standard motor. During cooling  
operation, this typically results in an  
efficiency gain of 1 SEER (Seasonal  
Energy Efficiency Ratio), which can  
add to your energy savings.  
It also means better indoor air  
quality—low-speed fan operation  
increases the effectiveness of your  
filters, allowing them to capture  
and remove more contaminants.  
3-year heating savings  
variable speed operation  
$4000  
$4033  
Full Capacity  
$3500  
$3000  
$2500  
Gradual  
Deceleration  
Gradual  
Acceleration  
Humidity  
Control  
Added  
Efficiency  
$2194  
$2000  
Off  
Gradual acceleration and deceleration of the variable speed  
motor significantly reduce sound.  
0
AFUE  
83  
%
83  
%
vs. 65%  
vs. 55%  
Less noise. Less humidity. More comfort.  
83% efficient 023V oil furnace vs.  
55% and 65% equivalent AFUE units  
This chart depicts potential energy savings you can  
expect from the O23V furnace versus older furnaces with  
lower efficiency ratings. Criteria used in this example  
are 2,000 full-load heating hours, with a 80,000-Btuh  
heating design load and $1.90 per gallon for oil. Your  
actual savings will vary depending on the weather, local  
fuel rates and your lifestyle.  
Source: Energy Information Administration,  
U.S. Department of Energy national average energy  
rates, 2005 forecast.  
3
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continuous comfort netWorK  
the o23v variable speed furnace is designed to easily integrate with other quality Lennox® products, providing  
a total home comfort solution:  
Xc21 air conditioner is the most quiet and efficient central air conditioner you can buy.**  
pureairair purification system cleans the air in your home better than any other single system you can buy.  
harmony iiiZoning system provides customized, room-to-room comfort.  
dave lennox Signature® collection o23v specifications  
O23V Upflow  
AFUE  
V2/3-70/90  
83%  
V3/4-105/120  
81%  
V5-140/154  
81%  
Dimensions HxWxD (in.)  
HxWxD (mm)  
54 x 19-1/2 x 30-5/8  
1372 x 495 x 778  
54 x 19-1/2 x 30-5/8  
1372 x 495 x 778  
54 x 22-1/2 x 33-1/8  
1372 x 572 x 841  
Note: Due to Lennox’ ongoing commitment to quality, all specifications, ratings and dimensions are subject to change without notice.  
Lennox is proud of the  
fact that these products  
have earned the Good  
Housekeeping Seal.  
Annual Fuel Utilization Efficiency (AFUE)  
Oil-fired forced-air furnace  
THIS MODEL  
81%-83%  
more energy-efficient  
78%  
87%  
**A combination of sound ratings established per ARI’s test standard: ꢀ70 and efficiency ratings established per ARI’s test standard: ANSI/ARI ꢀ10/ꢀ40-ꢀ005.  
4
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innovative features for enhanced comfort and efficiency  
heavy-gauge steel heat exchanger –  
Allows air to glide evenly over its smooth surface  
for maximum heating efficiency.  
innovative combustion chamber –  
Constructed from alumina-silica ceramic fiber, provides  
quiet operation and high efficiency.  
beckett burner –  
Delivers super-efficient combustion for greater fuel  
economy. It’s one of the finest, most trouble-free  
burners in the industry.  
heavy-duty fuel pump –  
Provides quiet, reliable operation with fast shutoff  
of oil flow.  
variable speed motor –  
Highly efficient motor quietly controls flow of air for  
added humidity control, indoor air quality and comfort.  
insulated blower compartment –  
Minimizes operating sounds.  
O23V  
Up to  
durable, insulated steel cabinet –  
Built to last and coated with a high-quality paint finish.  
83% afUE  
5
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Air conditioner or heat pump  
Thermostat  
Furnace or air handler  
Filtration device  
Germicidal light  
Indoor coil  
Humidifier  
HEPA bypass filtration system  
Energy recovery ventilator  
10 Supply duct  
11 Return duct  
customiZe your comfort  
Lennox® heating, cooling and Healthy Climate® indoor air quality products are designed to provide efficient, economical  
comfort—not only as individual units, but also together as an integrated system. This combined network of products  
delivers on every comfort count, from consistent temperatures and balanced humidity to improved indoor air quality.  
dealers you can count on  
Choosing the right dealer for your home’s heating, cooling and air quality needs is every bit as important as choosing the  
right brand. We think you’ll agree our independent dealers are a big reason you can count on quality customer service  
whenever you call. Your Lennox dealer’s dedication to quality shows in his knowledge, training and expertise in designing  
the right system for your home, installing it properly and keeping it running perfectly for many years to come.  
© Lennox Industries Inc. 2005  
(95M78) O23V 8/07  
PC50736  
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