a. Federal Manufactured Home Constructions

& Safety Standard (H.U.D. Title 24, Part 3280.707[a][2])

b.American National Standard (ANSI-119.2/ NFPA-501C) for all recreational vehicle in- stallations.

c.American National Standard (ANSI-Z223.1/ NFPA-54) and/or CAN/CGA B149 for all gas- fired furnace models.

d.American National Standard (ANSI-Z95.1/ NFPA-31) and/or CSA B139 for all oil-fired furnace models.

e.American National Standard (ANSI-C1/ NFPA-70) and/or CSA 22.1 Canadian Elec- tric Code Part 1 for all electrical field wiring.

f.Units have been investigated under stan- dards UL 307A & B, UL727-1999, ANSI 21.47a - CAN/2.3a - 1995, and CSA B140.10.

5.UNIT LOCATION

The furnace shall be appropriately located to the supply and return air distribution system. (See “AIR DISTRIBUTION”, Page 8) Sides and back of the furnace may be enclosed by wall framing. (See “Minimum Clearances,” Table 4, and Figures 2 through 5.)

The furnace installation is only intended for free air return through the furnace door louvers. DO NOT connect a ducted return air system di- rectly to the furnace. Improper installation may create a hazard and damage equipment, as well as void all warranties.

Furnace may be installed on combustible floor- ing when using NORDYNE Duct Connectors (see Section 10).

When installed in a residential garage, the fur- nace must be positioned so the burners and the source of the ignition are located no less than 18 inches above the floor and protected from physical damage by vehicles.

ALL MODELS

CLOSET

ALCOVE

Front

6"

18"

Back

0"

0"

Sides

0"

0"

Roof Jack

0"

0"

Top

6"

6"

Top and Sides of Duct

0"

0"

Bottom of Duct

 

 

B Cabinet

0"

0"

A Cabinet (w/ coil box)

0"

0"

A Cabinet (w/o coil box)

1/4"

1/4"

Table 4. Minimum Clearances

6.MINIMUM CLEARANCES

This heating appliance must be installed with clearances not less than the minimums shown in Table 4. This heating appliance must be installed with ample clearance for easy access to the air filter, blower assembly, burner assem- bly, controls, and vent connections.

a. Alcove installations (see Figure 2): minimum 18" clearance at front of furnace shall be provided for future servicing. A removable access panel should be installed between top of the furnace door frame and the ceiling.

b.Closet installations must use a louvered door having a minimum free area of 235 sq. in. when located 6" from furnace (See Figure 3) or 390 sq. in. for 5 ton ready M1 furnaces. For special clearance between 1" and 6", re- quirements are a louvered door with a mini- mum of 250 sq. in. free area, with the open- ings in the closet door in line with the louvered openings in the furnace door . A fully louvered closet door may be used (See Figure 4 and section 7.i. to evaluate compliance with this requirement).

7.RETURN AIR PROVISIONS

U.S.A. home manufacturers shall comply with all of the following conditions to have acceptable return air systems for closet installed forced air heating appliances:

!CAUTION:

HAZARD OF ASPHYXIATION: Nega- tive pressure inside the closet, with closet door closed and the furnace blower operating on high speed, shall be no more negative than minus 0.05 inch water column.

A Single trunk duct

B

Dual trunk duct

w/crossover connector

 

Transition duct

C

w/branches

 

Figure 5. Non-Platinum

Supply Duct System

6

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Nordyne M1S, M1G, M1B, M1M owner manual Unit Location, Minimum Clearances, Return AIR Provisions
Page 5 Page 7

M1M, M1S, M1B, M1G specifications

Nordyne, a renowned player in the HVAC industry, has introduced a range of high-efficiency gas furnaces, including the M1S, M1G, M1B, and M1M models. Each of these furnaces is designed to provide efficient heating solutions tailored to the needs of homeowners.

The M1S series is well-known for its reliability and performance. It features a single-stage heating process that delivers consistent warmth to any space. With its multi-speed blower, the M1S ensures quiet and comfortable airflow, adapting seamlessly to varying temperature demands. Its robust construction coupled with an energy-efficient design makes it an ideal choice for those looking for dependable heating without sky-high utility bills.

The M1G model steps it up with a two-stage heating system that offers enhanced comfort and efficiency. By operating at a lower speed during milder conditions, the M1G can effectively reduce energy consumption while still maintaining a cozy environment. It is equipped with a variable-speed blower that not only enhances efficiency but also minimizes noise, making it perfect for residential areas. The M1G is designed with advanced safety features, including an integrated control board that monitors furnace functions to ensure optimal performance.

For those seeking a budget-friendly option without compromising on quality, the M1B model provides a solid performance with its straightforward, reliable single-stage heating. While it may lack some of the advanced features found in higher-end models, the M1B is built for ease of use with straightforward controls and maintenance, making it a great option for families.

The M1M model integrates cutting-edge technology with a focus on maximum efficiency. Featuring a modulating gas valve, this model can adjust its output based on real-time heating requirements. This adaptability ensures that the furnace operates at peak efficiency, significantly lowering energy bills and improving overall comfort. The M1M also boasts advanced diagnostic capabilities that allow for easy troubleshooting, thus reducing maintenance time and costs.

In summary, Nordyne's M1 series furnaces—M1S, M1G, M1B, and M1M—offer a range of options to meet diverse heating needs. With technologies designed for efficiency, reliability, and comfort, Nordyne continues to solidify its reputation as a leader in the HVAC market, providing homeowners with effective heating solutions tailored to their lifestyles and budgets.
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