20

 

 

 

 

 

 

14-1/2

 

 

 

 

 

 

 

2-3/4

 

 

 

 

REAR WALL OF CLOSET OR ALCOVE

 

 

2-1/4

 

 

OUTLINE

 

 

 

 

 

FLOOR CUT-OUT

 

 

 

 

 

FOR DUCT CONNECTIONS

FURNACE

 

 

 

 

 

 

 

17-29/32

 

14-1/2

 

 

 

 

 

 

 

 

 

 

24

21-3/4

 

 

 

3-19/32

21-7/16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1-3/4

 

 

23-1/4

 

 

 

VENT

 

 

 

 

 

 

 

 

 

 

 

 

COMBUSTION AIR INTAKE

 

 

 

 

 

FUEL LINE ENTRY

 

 

 

 

 

 

2

 

 

 

 

10

 

 

 

 

˚

1-1/4

12-7/8

 

1-3/4

 

 

 

 

 

 

ALT FUEL LINE

14-3/4

 

FURNACE

 

 

 

ENTRY

 

 

 

 

 

 

OUTER DOOR

 

 

 

 

15-1/2

 

 

 

 

 

 

 

 

 

 

 

FLOOR CUT-OUT

 

 

 

 

 

 

FOR OPTIONAL

 

 

 

 

 

 

COOLING COIL

 

 

 

 

 

 

FOR NON-PLATINUM

 

 

 

 

 

 

SERIES UNITS

 

 

 

Figure 7. Cut-Out Locations

AIR DISTRIBUTION SYSTEMS

For proper air distribution, the supply duct system must be designed so that the static pressure measured external to the furnace does not exceed the listed static pressure rating shown on the furnace rating plate.

Three typical distribution systems are illus- trated in Figure 2. Location, size, and number of registers should be selected on the basis of best air distribution and floor plan of the home.

DUCT CONNECTOR SELECTION

PLATINUM SERIES

a. For Platinum ready construction use the 14” round plenum, p/n: 903896.

NON-PLATINUM SERIES

a. Determine depth of floor cavity from surface of floor to top of supply air duct (See Figure 3).

b. Select appropriate model from Table 5 which matches X-dimension of the floor

10

cavity. To maximize air delivery, re- move reducer “C” (see Figure 5) to obtain the largest open area that will fit the duct/floor construction.

DUCT INSTALLATION

Required floor, ceiling, and roof cut-out open- ings must be carefully located to avoid mis- alignment of the furnace (see Figures 6 & 7). Installation procedures are suggested for typi- cal furnace installations and need not be fol- lowed in the exact listed sequence.

CUT OUT FLOOR OPENING & FUEL LINE HOLE

a. Determine center of closet or alcove (Fig- ures 7 & 8).

b. Locate center of the floor opening, mea- sured 10" from the rear wall, and mark cut- out measuring approximately 14-1/2" by 14- 1/2" (± 1”) for model duct connector used (refer to Figures 4 & 5).

c.Locate center of gas line hole, measured 23- 1/4" from the rear wall and 6-5/8" to the left of center of the floor cut-out (See Figure 6) or

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Nordyne M3RL installation instructions AIR Distribution Systems, Duct Connector Selection, Duct Installation
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M3RL specifications

The Nordyne M3RL is a high-efficiency gas furnace designed for residential heating applications, characterized by its robust performance and advanced technologies. It is part of Nordyne's distinguished lineup, which emphasizes reliability and comfort in home heating systems. The M3RL model is particularly notable for its focus on energy efficiency, making it an attractive option for homeowners looking to reduce their energy expenses while maintaining optimal heating levels.

One of the standout features of the Nordyne M3RL is its high Annual Fuel Utilization Efficiency (AFUE) rating, which often exceeds 80%. This efficient design ensures that more of the fuel consumed is converted into usable heat for the home. By employing a variable-speed blower, the M3RL enhances comfort by allowing for more precise control over air circulation, contributing to better temperature consistency throughout the living space.

The M3RL utilizes advanced multi-stage heating technology, allowing the system to operate at different capacities depending on the heating demand. This means it can run at lower settings during milder weather, which not only saves energy but also reduces wear and tear on the equipment, extending its lifespan. The furnace also includes a reliable ignition system that ensures quick and safe starts, eliminating the inefficiencies associated with older pilot light systems.

Another important characteristic of the Nordyne M3RL is its acoustical insulation, which minimizes operational noise. The quiet operation is particularly valued in residential settings, where noise pollution can be disruptive. Additionally, the furnace features a compact design, making it easy to install in a variety of spaces, including tight basements or utility rooms.

The M3RL model is also equipped with a smart control system that interfaces seamlessly with modern thermostats, offering homeowners the ability to program their heating schedules and optimize energy usage. This integration with smart home technology positions the M3RL not just as a heating solution, but as a component of a more comprehensive home energy management system.

In conclusion, the Nordyne M3RL gas furnace represents a blend of efficiency, advanced technology, and user-friendly features. Its high AFUE rating, multi-stage heating capability, quiet operation, and smart technology integration make it a reliable choice for homeowners aiming to enhance their comfort while minimizing energy costs. This furnace is a testament to Nordyne's commitment to innovation in the HVAC industry.
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