Lenoxx Electronics G40 User Manual
G40 Gas Furnace ◆ 80% AFUE
LENNOX’ MERIT® SERIES
Home Comfort Systems
G40
Mid-efficiency gas furnace
Merit® Series G40 Gas Furnace
THIS MODEL
80%
Mid-efficiency levels save
™
you money, compared to
older furnaces
Durable, high-quality design
for long-lasting performance
EFFICIENCY RATING
80% AFUE (Annual Fuel
Utilization Efficiency)
WARRANTY*
20-year limited warranty
on the heat exchanger.
5-year limited warranty
on all remaining
covered components.
Innovation never felt so good.
EFFICIENT, CONSISTENT WARMTH—YEAR AFTER YEAR
Year-round comfort – Built to
deliver outstanding comfort,
year after year.
Duralok® Heat Exchanger –
Made of high-quality, patented
ArmorTuf™ aluminized steel.
Life-tested to 2-1/2 times agency
requirements (ANSI Standard
Z21.47) for long product life
and durability.
Hot Surface Igniter – Delivers
starting reliability.
Durable Steel Cabinet –
Constructed of heavy-gauge steel
and protected by a high-quality,
textured-paint finish.
G40
* Applies to residential applications only.
See actual warranty certificate for details.
Merit® Series G40 Specifications
UH36A-045
G40 UH24A-045 (X) UH24A-070 UH36A-070 UH36B-090 UH36C-110 UH48B-070 UH48B-090 (X)
AFUE 80% 80% 80% 80% 80% 80% 80%
Dimensions HxWxD (in.) 40 x 14-1/2 x 28-1/2 40 x 14-1/2 x 28-1/2 40 x 14-1/2 x 28-1/2 40 x 17-1/2 x 28-1/2 40 x 21 x 28-1/2 40 x 17-1/2 x 28-1/2 40 x 17-1/2 x 28-1/2
HxWxD (mm) 1016 x 368 x 724 1016 x 368 x 724 1016 x 368 x 724 1016 x 446 x 724 1016 x 533 x 724 1016 x 446 x 724 1016 x 446 x 724
G40 UH48C-110 UH60C-110 (X) UH48C-135 UH60D-135 UH60D-155 DF-24A-045 (X) DF-36A-045
AFUE 80% 80% 80% 80% 80% 80% 80%
Dimensions HxWxD (in.) 40 x 21 x 28-1/2 40 x 21 x 28-1/2 40 x 21 x 28-1/2 40 x 24-1/2 x 28-1/2 40 x 24-1/2 x 28-1/2 40 x 14-1/2 x 28-1/2 40 x 14-1/2 x 28-1/2
HxWxD (mm) 1016 x 533 x 724 1016 x 533 x 724 1016 x 533 x 724 1016 x 622 x 724 1016 x 622 x 724 1016 x 368 x 724 1016 x 368 x 724
G40 DF-36A-070 (X) DF-36B-090 DF-48B-070 DF-48C-090 (X) DF-48C-110 (X) DF-60C-110 (X) DF-60D-135
AFUE 80% 80% 80% 80% 80% 80% 80%
Dimensions HxWxD (in.) 40 x 14-1/2 x 28-1/2 40 x 17-1/2 x 28-1/2 40 x 17-1/2 x 28-1/2 40 x 21 x 28-1/2 40 x 21 x 28-1/2 40 x 21 x 28-1/2 40 x 24-1/2 x 28-1/2
HxWxD (mm) 1016 x 368 x 724 1016 x 446 x 724 1016 x 446 x 724 1016 x 533 x 724 1016 x 533 x 724 1016 x 533 x 724 1016 x 622 x 724
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.
80% AFUE
(37M96) G40 2/07
PC48540
© Lennox Industries Inc. 2002
Visit us at www.lennox.com, or contact us at 1-800-9-LENNOX.
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