Nordyne M3RL Venting and Combustion AIR Requirements, General, Install Furnace

Page 13

SLIDE FURNACE

MTG. PLATE TABSALL THE WAY BACK

ONTO MTG. PLATE

SECURE FURNACE

WITH 2 FASTENERS AT FRONT

CORNER HOLES

Knockout Over Holes

SUPPLY AIR DUCT

Figure 13. “A”, “B”, & Platinum Cabinet Furnaces

NOTE: Additional fasteners may be used at rear, sides or through door frame, as desired, to secure furnace to closet or alcove framing.

VENTING AND COMBUSTION AIR REQUIREMENTS

!CAUTION:

Snow must not be allowed to restrict or block the combustion air intake or vent pipes.

General

FUEL

LINE HOLES

MTG. PLATE TABS

SECURE FURNACE WITH 2 FASTENERS

AT FRONT CORNER HOLES

SUPPLY AIR DUCT

SLIDE FURNACE

ALL THE WAY BACK ONTO MTG. PLATE

NORDYNE condensing furnaces must be installed with outdoor combustion air piped directly to the furnace. Codes refer to this type of installation as direct vent, or two pipe installation.

Provisions must be made for adequate supply of air for combustion and ventilation. For United States installations, the adequacy of air provisions can be determined by consulting

Figure 14. “A” Cabinet Furnace on 911969 Coil Cabinet (Non-Platinum Series)

3.At the front-to-back of duct run (Area “A”), bend the duct tabs and secure them directly to the duct.

4.At Area “B”, bend the duct tabs up and back over, around the duct connector, (See Step 3).

5.Fold/form the duct flap against the side of the duct connector and attach as shown, (See Step 4). Use three (3) staples (minimum) on each duct flap OR, if a 2X block/joist is not provided, use two (2) sheet metal screws (minimum) on each duct flap. An alternate attachment method is acceptable, as long as the plenum is securely attached.

6.Tape the duct flap edges with an approved tape for a leak-free joint.

INSTALL FURNACE

a. Remove furnace outer door(s) and bottom fuel line knockout.

b. Place furnace onto duct connector and cen- ter with floor opening.

c.Slide onto mounting plate. (Bottom rear slots on furnace should engage with mounting plate tabs.)

d.Secure front with one (1) fastener at each corner (See Figure 13 or 14).

the current version of the National Fuel Gas Code (ANSI Z223.1/NPFA-54). For Canadian installations, requirements are specified in the National Standard of Canada (CAN/CGA B149.1 & .2). Consult local codes for special requirements.

NOTE: If the furnace is operated without adequate air for combustion and ventilation, it may not perform properly. Furnace components may be strained by high temperature and could fail prematurely.

!WARNING:

The combustion air piping must not be blocked or restricted in any manner.

!WARNING:

Furnace installation using methods other than those described in the following sections must comply with the National Fuel Gas Code and all applicable local codes to provide sufficient combustion air for the furnace.

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Contents Installation Instructions Page L 060 a a W Table of ContentsFurnace Specifications/Airflow Data Shipping WeightGeneral Top ViewGeneral Description Owner InformationManufacturer WARRANTY, OWNER’S Responsibilities Installation StandardsCirculating AIR Supply LocationMinimum Clearances Return AIR Provisions Duct ConnectorsDucted Return AIR Closet or AlcoveDuct Installation Duct Connector SelectionAIR Distribution Systems Installing Screw Down Duct CON- Nector Installing Platinum Series 14 Round Duct ConnectorCUT Duct Opening Finger Tabbed only Screw Down Platinum SeriesAlternate Attachment Methods Installing Finger Tabbed Duct CON- NectorsVenting and Combustion AIR Requirements Install FurnaceGeneral Furnace Must not be Common Vented with Other Appliances Venting RequirementsVent Termination Clearances for Direct Vent Furnaces Vent TableVent Pipe Material Vent Pipe InstallationHorizontal Venting Downflow FurnaceHorizontal Venting Drainage of Condensate from Furnace Alternate Horizontal Vent InstallationGAS Supply and Piping Furnace with Condensate Drain Trap AssemblyLeak Check ConversionHigh Altitude Derate To Turn Off Fuel Supply to the ApplianceTo Remove the Burner Orifices To Remove the Burner AssemblyTo Convert the Unit to the Alternate Gas Approximate Orifice Size for Natural and LP GasesConvertible Pressure Regulator Cap Lighting and Adjustment of the ApplianceLine Voltage Wiring Electrical WiringType of Fuel Manifold Pressure Completing the ConversionElectrical Data Low Voltage WiringStart-Up Procedure START-UP and AdjustmentsVentilation Sequence of Operation Shut Down ProcedureVerifying Firing Rate Description of Components Verifying Operation of the Supply Air Limit SwitchGas Flow Rate Verifying Burner OperationAccessory Kits MaintenanceCombustion Air and Vent System Air FilterSystem Operation Information Condensate Drain AssemblyLubrication Blower CompartmentFurnace Fails to Operate Cooling ModeM3 Downflow Furnace Downflow Furnace Wiring Diagram Page Fuel Type INSTALLATION/PERFORMANCE Check List¢7082197¤

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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