Lenoxx Electronics Furnace G51 User Manual

G51 high-Efficiency Gas Furnace 92.1% AFUE  
Lennox’ eLite® SerieS  
Home Comfort Systems  
g51  
Single-stage, high-efficiency furnace  
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INNOvATIvE FEATUREs FOR ENhANCED COMFORT AND EFFICIENCY  
Insulated Blower Compartment –  
Reduces sound for quieter operation.  
Duralok Plus® heat Exchanger –  
Made of high-quality, patented ArmorTuf™  
aluminized steel. Life-tested to ꢀ-1/ꢀ times agency  
requirements (ANSI standard Zꢀ1.47) for long  
life and durability.  
sureLight® Igniter –  
Made of silicon nitride for reliable,  
long-life performance  
Robust stainless steel  
secondary heat Exchanger –  
Time-tested design allows the furnace to achieve  
high efficiency levels by capturing additional heat.  
sureLight Control Board –  
Controls furnace operation to  
ensure reliable, efficient performance.  
Durable steel Cabinet –  
Built to last and coated with high-quality, textured-  
paint finish.  
g51  
92.1% afUe  
Elite® series G51 specifications  
G51  
24B-045  
36B-045  
36B-070  
36C-090  
48C-090  
60C-090  
AFUE  
92.1%  
92.1%  
92.1%  
92.1%  
92.1%  
92.1%  
Dimensions HxWxD (in.)  
HxWxD (mm)  
40 x 17-1/2 x 28-1/2  
1016 x 446 x 724  
40 x 17-1/2 x 28-1/2  
1016 x 446 x 724  
40 x 17-1/2 x 28-1/2  
1016 x 446 x 724  
40 x 17-1/2 x 28-1/2  
1016 x 446 x 724  
40 x 21 x 28-1/2  
1016 x 533 x 724  
40 x 21 x 28-1/2  
1016 x 533 x 724  
G51  
48C-110  
60C-110  
60D-135  
AFUE  
92.1%  
92.1%  
92.1%  
Dimensions HxWxD (in.)  
HxWxD (mm)  
40 x 21 x 28-1/2  
1016 x 533 x 724  
40 x 21 x 28-1/2  
1016 x 533 x 724  
40 x 24-1/2 x 28-1/2  
1016 x 622 x 724  
Note: Due to Lennox’ ongoing commitment to quality, all specifications, ratings and dimensions are subject to change without notice.  
Many Lennox® home  
Lennox is proud of  
the fact that these  
products have  
earned the Good  
Housekeeping Seal.  
comfort systems meet  
EnErGY STAr® requirements  
when used with appropriate  
components. Ask your  
dealer for details.  
THIS MODEL  
92.1%  
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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  
12 Dehumidifier system  
13 Residential generator  
CUsTOMIzE YOUR COMFORT  
Lennox® heating, cooling and 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. Lennox  
also offers a line of residential generators, which provide safe, reliable standby power in the event of outages.  
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. 2007  
(48M85) G51 09/08  
PC55478  
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