Unit Dimensions − inches (mm)

1NOTE − 60C and 60D units that require air volumes over 1800 cfm (850 L/s) must have one of the following:

1.Single side return air with transition to accommodate 20 x 25 x 1 in. (508 x 635 x 25 mm) cleanable air filter. (Required to maintain proper air velocity.)

2.Single side return with optional return air base.

3.Bottom return air.

4.Return air from both sides.

5.Bottom and one side return air.

See Blower Performance Tables for additional information.

2Flue outlet may be horizontal but furnace must be vented vertically

3Optional external side return air filter kit cannot be used with the optional RAB Return Air Base.

3−1/8 (79)

D

SUPPLY AIR

OPENING

FLUE OUTLET

(Top)

3 OPTIONAL

 

 

 

23−3/4

 

 

 

 

EXTERNAL

 

 

 

 

(603)

 

 

 

 

 

 

 

 

 

 

 

 

 

SIDE RETURN

25

 

 

AIR FILTER KIT

 

 

(635)

 

 

(Either Side)

 

 

TOP VIEW

 

 

A

 

 

 

B

9/16 (14)

 

 

3OPTIONAL

 

 

EXTERNAL

 

 

SIDE RETURN

 

 

AIR FILTER KIT

 

 

(Either Side)

 

 

 

33

 

 

 

(838)

 

 

14−3/4

 

 

(375)

 

 

 

16

 

 

 

(406)

 

 

 

5/8

3/4

C

3/4

(16)

(19)

(19)

 

1Bottom Return

 

 

Air Opening

 

 

FRONT VIEW

3/4(19)

27−3/4

 

Front Panel

(705)

 

 

 

3−1/4 (83)

 

 

3 (76) Right

19−7/16

9/16

(14)

6−3/4 (171) Left

(494)

 

 

2 FLUE OUTLET

 

 

9−1/8 (232) Right

(Either Side)

 

 

ELECTRICAL INLET

 

8−5/8 (219) Left

 

(Either Side)

 

 

 

 

 

5−3/8 (137) Right

GAS PIPING INLET

 

1−9/16 (40) Left

(Either Side)

 

 

ELECTRICAL

23

 

1−1/2

INLET (Either Side)

 

(584)

 

(38)

 

1 Side Return

14

 

(Either Side)

Air Opening

(356)

 

 

(Either Side)

 

 

 

1−15/16 (49)

 

3−1/4

23−1/2

 

 

(83)

(597)

 

 

 

1Bottom Return

 

 

 

Air Opening

 

 

SIDE VIEW

ML180UHE Model No.

 

A

 

B

C

 

 

D

in.

 

mm

in.

 

mm

in.

 

mm

in.

 

mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

045(X)E36A

14−1/2

 

368

13−3/8

 

340

13

 

330

4−3/4

 

121

 

 

 

 

 

 

 

 

 

 

 

 

 

070(X)E36B

17−1/2

 

446

16−3/8

 

416

16

 

406

6−1/4

 

159

090(X)E48B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

090E60C

21

 

533

19−7/8

 

504

19−1/2

 

495

8

 

203

110(X)E60C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

135E60D

24−1/2

 

622

23−3/8

 

546

23

 

584

9−3/4

 

248

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Lenox ML180UHE, Lennox Merit Series Gas Furnace Upflow/Horizontal air discharge Unit Dimensions − inches mm, TOP View
Page 1 Page 3

Lennox Merit Series Gas Furnace Upflow/Horizontal air discharge, ML180UHE specifications

The Lenox ML180UHE is a reliable and efficient gas furnace that falls within the Lennox Merit Series. This model is designed for upflow or horizontal air discharge, making it versatile for various installation requirements. With its robust construction and advanced technology, the ML180UHE is ideal for homeowners seeking a dependable heating solution that combines comfort and efficiency.

One of the main features of the ML180UHE is its impressive 80% Annual Fuel Utilization Efficiency (AFUE) rating. This efficiency means that 80 cents of every dollar spent on fuel is used to heat your home while minimizing waste. This furnace is equipped with a multi-speed blower motor that enhances the overall air circulation in your home, providing consistent temperatures and improved comfort.

The ML180UHE features a durable heat exchanger made of high-quality materials, which ensures longevity and reliable performance. The design of the heat exchanger maximizes heat transfer efficiency, allowing the furnace to quickly warm your home while also maintaining optimal efficiency levels throughout its lifespan.

Lennox has integrated advanced technologies into the ML180UHE to enhance its operation and user experience. The unit is compatible with a variety of thermostats, including Lennox's innovative iComfort S30 Smart Thermostat, allowing for easy temperature control and programming capabilities. This smart technology can learn your preferences, optimize energy usage, and enable remote access through a smartphone app.

In addition to its energy efficiency, the ML180UHE offers quiet operation, making it an excellent choice for residential environments. The well-insulated cabinet helps to reduce noise levels, providing a peaceful indoor atmosphere.

Installation and maintenance are simplified with the ML180UHE due to its compact design and accessible components. The furnace is designed to fit into tight spaces, allowing for flexible installation options. Regular maintenance is uncomplicated, ensuring that homeowners can keep the unit running at peak performance with minimal effort.

Overall, the Lennox ML180UHE gas furnace provides users with a reliable, efficient, and quiet heating solution. With its combination of advanced technology, durable design, and ease of use, it is an excellent choice for anyone looking to enhance the comfort of their home while optimizing energy consumption.
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