Installation on Combustible Flooring

(Using an Additive Base)

1 − When unit is installed on a combustible floor, an addi-

tive base must be installed between the furnace and

the floor. The base must be ordered separately. See table 2 for opening size to cut in floor.

CAUTION

The furnace and additive base shall not be installed directly on carpeting, tile, or other combustible ma- terial other than wood flooring.

TABLE 2

ADDITIVE BASE FLOOR OPENING SIZE

Cabinet

Catalog

Front to Rear

Side to Side

 

 

 

 

Width

Number

in.

mm

in.

mm

 

 

 

 

 

 

 

 

B Cabinet

11M60

22

559

18 − 3/4

476

(17.5")

 

 

 

 

 

 

 

 

 

 

 

C Cabinet

11M61

22

559

22 − 3/4

578

(21")

 

 

 

 

 

 

 

 

 

 

 

D Cabinet

11M62

22

559

25 − 3/4

654

(24.5")

 

 

 

 

 

 

 

 

 

 

 

2 − After opening is cut, set additive base into opening.

3 − Check fiberglass strips on additive base to make sure they are properly glued and positioned.

4 − Lower supply air plenum into additive base until ple- num flanges seal against fiberglass strips.

NOTE − Be careful not to damage fiberglass strips. Check for a tight seal.

5 − Set the furnace over the plenum.

6 − Ensure that the seal between the furnace and plenum is adequate.

Installation on Cooling Coil Cabinet

1 − Refer to reverse−flow coil installation instructions for correctly sized opening in floor and installation of cabi- net.

2 − When cooling cabinet is in place, set and secure the furnace according to the instructions that are provided with the cooling coil. Secure the furnace to the cabinet.

3 − Seal the cabinet and check for air leaks.

Return Air Opening −− Downflow Units

Return air may be brought in only through the top opening of a furnace installed in the downflow position.The follow- ing steps should be taken when installing plenum:

1 − Bottom edge of plenum should be flanged with a hemmed edge (See figure 15 or 16).

2 − Sealing strips should be used to ensure an airtight seal between the cabinet and the plenum.

3 − In all cases, plenum should be secured to top of fur- nace using sheet metal screws.

4 − Make certain that an adequate seal is made.

PLENUM

(Field Provided) SECURE FROM OUTSIDE CABINET

SEALING STRIP

CABINET

SIDE PANEL

(Field Provided)

 

Side View

FIGURE 15

G61MP UNIT

PROPERLY

SIZED FLOOR

OPENING

SUPPLY AIR PLENUM

ADDITIVE BASE

PLENUM

(Field Provided)

SECURE FROM

 

INSIDE CABINET

Side View

SEALING STRIP (Field Provided)

CABINET

SIDE PANEL

FIGURE 16

FIGURE 14

Page 13

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Lennox International Inc G61MP Series Units, Gas Units installation instructions Additive Base Floor Opening Size, Side View
Page 12 Page 14

G61MP Series Units, Gas Units specifications

Lennox International Inc. has established itself as a leader in the heating and cooling industry, and its G61MP Series Gas Units stand as a testament to the company's commitment to innovation and energy efficiency. These gas units are specifically designed for residential applications and are recognized for their reliability, performance, and advanced technology.

One of the main features of the G61MP Series is its variable speed motor, which offers significantly enhanced comfort over traditional single-stage gas units. This technology allows for precise temperature control and improved humidity management. By adjusting its speed according to the heating demand, the unit minimizes temperature fluctuations, leading to a more consistent indoor climate.

Another notable characteristic of the G61MP Series is its ECM blower motor, which operates quietly and efficiently. This motor not only reduces energy consumption but also enhances the overall comfort of the home by providing a steady flow of warm air without the disruptive noise often associated with traditional gas units.

The G61MP Series units are designed with a focus on energy efficiency, boasting an impressive Annual Fuel Utilization Efficiency (AFUE) rating. This rating indicates that these units convert a significant portion of the fuel they consume into usable heat, resulting in lower energy bills for homeowners. The units are equipped with a modulating gas valve that further optimizes fuel usage by adjusting the gas flow according to the heating needs of the home.

Safety is a paramount consideration in the design of the G61MP Series. These units are built with advanced safety features, including a self-diagnostic control system that continuously monitors the unit’s performance. This system alerts homeowners to any potential issues, allowing for proactive maintenance and ensuring the longevity of the equipment.

The G61MP Series is also designed for ease of installation and servicing. Its compact design allows for flexible placement in various home environments, while the user-friendly access panels simplify routine maintenance tasks.

In conclusion, Lennox International Inc.'s G61MP Series Gas Units deliver a combination of advanced technology, energy efficiency, and reliability, making them an excellent choice for homeowners looking to enhance their heating systems. With features designed to maximize comfort, minimize energy costs, and ensure safety, these units represent a significant advancement in residential heating solutions.
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