FRESH AIR FOR COMBUSTION

Be sure to provide enough fresh air for combustion. Enough air ensures proper

WARNING

combustion and assures that no hazard will develop due to the lack of oxygen.

If you use a fireplace or a kitchen or a bathroom exhaust fan, you should install an

INOTE

outside air intake. These devices will rob the boiler and water heater of combustion

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air. [

You must provide enough flesh air to assure proper combustion. The fire in the boiler uses oxygen. It must have a continuous supply. The air in the house contains only enough oxygen to supply the burner for a short time. Outside

air must enter the house to replace the air used by the burner. Study the following examples 1 and 2 to determine your fresh air requirements.

EXAMPLE 1: Boiler Located in Unconfined Space

If your boiler is in an open area (unpartitioned basement) in a conventional house, the air that leaks through the cracks

around the doors and windows will usually be adequate to provide air for combustion. The doors should not fit tightly. Do not caulk the cracks around the windows.

An unconfined space is defined as total input rating of all appliances

a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour of the installed in that space.

EXAMPLE 2: Boiler Located in Confined Space

A. All Air from Inside the Building: The confined space shall be provided with two permanent openings

communicating directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined space. The total input of all combustion equipment installed in the combined

space shall be considered in making this determination. Each opening shall have a minimum free area of one square inch per 1,000 Btu per hour of the total input rating of all combustion equipment in the confined space, but

not less than 100 square inches. One opening shall be within 12 inches of the top and one within 12 inches of the bottom of the enclosure.

Example: Your boiler is rated at 100,000 Btu per hour. The water heater is rated at 30,000 Btu per hour. The total is I30,000 Btu per hour. You need two grilles, each with 130 square inches of FREE opening. Metal grilles have about 60% FREE opening. To find the louvered area needed, multiply the free opening required by 1.7 (130

x 1.7 = 221.0 sq. in. louvered area). In this example, two grilles each having an 8" x 30" (24-0 sq. in.) louvered area would he used.

AIR OPENINGS FOR BOILER LOCATED IN CONFINED SPACE (CLOSET OR UTILITY ROOM)

VENTILATING

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GRILLE

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COMBUSTION

AIR GRILLE

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Kenmore 3EW.75, 4EW.90, 3E W.65, 5EW1.75, 5EW2.00, 5EWL.20, 4EW1.50 owner manual Fresh AIR for Combustion, Inote
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5EWL.20, 3E W.65, 4EW.90, 5EW2.00, 4EW1.50 specifications

The Kenmore lineup, featuring models 5EW1.75, 3EW.75, 4EW1.50, 5EW2.00, and 4EW.90, showcases a range of advanced technologies and features designed to enhance performance and efficiency in home appliances. These models highlight Kenmore’s commitment to innovation, aiming to meet the diverse needs of consumers for reliable and functional appliances.

The 5EW1.75 stands out with its efficient energy usage, designed for those who prioritize eco-friendliness without sacrificing performance. This model employs smart technology that optimizes energy consumption, making it not only cost-effective but also environmentally responsible. Additionally, it incorporates intuitive controls, allowing users to adjust settings easily and monitor energy levels in real-time.

Transitioning to the 3EW.75, this model focuses on durability and reliability. Constructed with high-quality materials, it promises a longer lifespan and reduced maintenance costs. The inclusion of quality components ensures consistent performance even under heavy use, appealing to families or individuals who value dependability.

The 4EW1.50, known for its versatility, features multiple settings suitable for various tasks. From quick washes to intense cycles, users can select the ideal program for their specific needs. This adaptability makes it a favorite among busy households. Coupled with a user-friendly interface, the 4EW1.50 encourages ease of use, which is a significant draw for consumers.

The 5EW2.00 takes efficiency to the next level, integrating cutting-edge washing technologies. With a focus on water conservation, this model uses advanced sensors to optimize water usage based on load size and fabric type. Additionally, its noise reduction capabilities ensure that operations remain quiet, a key factor for those in smaller living spaces.

Lastly, the 4EW.90 model blends style and function. With a sleek design, it enhances the aesthetic of any home while providing robust performance. It features modern connectivity options that allow for integration with smart home systems, bringing convenience to everyday tasks.

Together, these Kenmore models represent a balance of innovation, efficiency, and user-focused design. Whether addressing energy use, versatility, durability, or aesthetics, each model brings unique characteristics that cater to the evolving demands of consumers, solidifying Kenmore’s reputation as a leader in household appliance technology.
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