Downflow Furnace

 

 

 

 

 

 

 

 

Vent

3 9/16"

 

 

 

 

1 7/8"

 

 

 

 

 

 

 

 

 

Combustion

 

 

 

 

 

Air Intake Pipe

 

 

Seal/Caulk

 

See Vent Table 4

 

 

 

Around Pipe

 

Straps or Other Suitable

3 1/2"

 

at Building

 

 

 

Supports at Minimum of

6"

 

 

 

 

5 ft. Intervals

 

 

90˚ Elbow

Coupling

 

 

Top View

 

 

 

 

 

Offset with

 

 

 

 

Vent for Adequate

 

 

 

 

Dimensional Clearance

12"

 

Upward Pitch - 1/4" Per Foot

 

Exhaust

Wall

Outlet Exhaust Vent

 

Vent

Min.

 

 

 

 

PVC or

 

First Support Should be as Close to

 

ABS pipe

 

 

Furnace Connection as Possible

 

 

Normal Snow Level

 

Combustion Air

Furnace

 

3" x 2"

 

Intake Pipe

 

Reducer

Figure 16. Horizontal Venting

Combustion Air Intake Pipe

Support System

on Vertical Rise

Below Joints

First support should be as close to furnace as possible

5'

Vent

Vent

Upward Pitch

1/4" per foot

Combustion Air Intake Pipe

Figure 17. Vertical Venting

5.Avoid areas where condensate drainage may cause problems by dropping on plant- ers or patios, etc. Also ensure that ex- haust gases will not impinge on windows or building surfaces, which may be com- promised or damaged by condensation. Do not install the vent terminal such that exhaust is directed into window wells, stairwells, under decks or into alcoves or similar recessed areas, and do not termi- nate above any public walkways.

6.Select the point of wall penetration where the minimum 1/4 inch per foot of slope up can be maintained.

!CAUTION:

For optimal performance vent furnace through wall which experiences the least exposure to winter winds.

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Nordyne M3RL installation instructions Downflow Furnace, Horizontal Venting

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.