Availablefromyourdistributor StandoffFilterRack

onesideoffurnace,requireastandofffilterrack,seeFigure36,

availablefromyourdistributor.

StandoffFilterRack

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Using Optional	/_/_
StandoffRack Filter	_	/

Downflow Furnace Installation

Non- Combustible Floor Installation

Fabricate a plenum to the dimensions given in Table 8, for the fur-

nace outlet. Plenum should be flanged, approximately 3/4" for support.

Note: The three(3) screws in the top panel of the furnace next to

the duct flange MUST be removed to provide serviceability of the primary heat exchangers in the downflow installation

1.Position plenum through the floor and set the furnace over

the opening in the floor. If necessary, grout around the base to seal air leaks between the base and the floor.

I _"_

25-21-45a

Combustible Floor Installation

FIRE HAZARD

Failure to install unit on noncombustible subbase can

result in death, personal injury and/or property damage.

Place furnace on noncombustible subbase on

downflow applications, unless installing on non-com- bustible flooring.

CAUTION

If filters are only suitable for heating application, advise

homeowner that filter size may need to be increased if air

conditioning is added.

Addition Of Air Conditioning

When a refrigeration coil is used in conjunction with this unit, it must be installed on the discharge side of the unit to avoid con- densation on the heat exchanger. The coil installation instructions must be consulted for proper coil location and installation proce-

dures. With a parallel flow arrangement, dampers must be installed to prevent chilled air from entering the furnace. If manu- ally operated dampers are used, they must be equipped with a means to prevent operation of either unit unless the damper is in full heat or full cool position.

A 3" clearance is required on the right side of the furnace in order

to run the condensate drain line. Copper, iron or plastic tubing

may be used for the condensate drain line.

;ubbase for Combustible Floor

NOTE: The three(3) screws in the top panel of the furnace next to

the duct flange MUST be removed to provide serviceability of the primary heat exchangers in the downflow installation

Note: When using the subbase for combustible floors, the dis- charge air duct flanges on the furnace MUST be broken down to provide proper fit up to the subbase. Use duct pliers to bend the duct flanges flat onto the furnace casing. DO NOT bend the duct

flanges inward (toward the heat exchangers) as air flow restric- tions may occur.

The Subbase for Combustible Floors MUST be used when a

downflow furnace is set on a combustible floor, even when the fur- nace is installed on a coil box.

1.Cut the opening in the floor according to Table 8. The hole in the floor must be cut to the dimensions listed in Table 8

since the base is equipped with locating tabs that center the base over the opening.

The opening in the base is 11/4" shorter and 11/8" narrower than

the recommended size of the opening in the floor. This is done to maintain clearance between the floor and the plenum.

2.Fabricate the plenum to the dimensions given in Table 8.

Note that the dimensions given are outside dimensions.

E_	44001 111400

9MPD, N9MP1, N9MP2 specifications

The Sears N9MP2, N9MP1, and 9MPD are prominent models in the realm of residential heating systems, specifically designed to provide efficient and effective heating solutions. These models are part of Sears' commitment to quality and innovation, making them a popular choice among homeowners seeking reliability and performance.

The N9MP2 is a high-efficiency multi-speed gas furnace that boasts an impressive AFUE (Annual Fuel Utilization Efficiency) rating. This feature allows the furnace to convert a significant portion of fuel into usable heat, which effectively translates to lower energy bills for homeowners. The unit is equipped with a two-stage gas valve that provides increased comfort by adjusting the heating output based on demand, ensuring an even temperature throughout the home.

The N9MP1, like its counterpart, is known for its reliability and efficiency. It offers a single-stage operation that is ideal for homes needing consistent heating without the necessity for the more complex stages present in two-stage systems. This model also has a good AFUE rating, making it a cost-effective solution for families looking to reduce their heating expenses. Its design is tailored for easy installation and maintenance, allowing homeowners to keep their heating systems running at optimal performance without hassle.

The 9MPD model takes a step further with its advanced technology integration. It features a sophisticated control board that allows for easier diagnostics and enhanced system management. The 9MPD is also designed with quiet operation in mind, employing advanced sound-reduction technologies to minimize noise levels during heating cycles. Homeowners will appreciate the peace and quiet it brings, particularly in shared living spaces.

All three models are equipped with high-quality insulation and specialized heat exchangers that enhance their thermal efficiency. Additionally, they are designed with safety features such as automatic shut-off systems and robust flame rollout protection, ensuring a safe heating experience.

In terms of characteristics, these models are generally constructed with durable materials, designed to endure harsh weather conditions while providing consistent heating. They can be connected to various home automation systems, which adds to their appeal for tech-savvy consumers.

In conclusion, the Sears N9MP2, N9MP1, and 9MPD represent a comprehensive lineup of reliable, efficient, and technologically advanced heating systems suitable for contemporary homes. Their dedication to performance ensures that homeowners enjoy a warm and energy-efficient environment throughout the chilly seasons.

Sears N9MP2, 9MPD Availablefromyourdistributor StandoffFilterRack, Combustible Floor Installation

Models: 9MPD N9MP1 N9MP2