Ultimate Products PF Series manual Fresh Air for Combustion Chimney Vented Boilers

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Fresh Air for Combustion - Chimney Vented Boilers

WARNING

Be sure to provide enough fresh air for combustion. Enough air ensures proper combustion and assures that no hazard will develop due to the lack of oxygen.

You must provide for enough fresh air to assure proper combustion. The fire in the boiler uses oxygen. It must have a continuous supply. The air in a house contains only enough oxygen to supply the burner for a short time. Outside air must enter the house to replace that used by the burner. Study 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 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 a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour of the total input rating of all appliances installed in the 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. See Figure 5.

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 130,000 Btu per hour. You need two grilles, each with 130 square inches of FREE opening. Metal grilles have about 60% FREE area. To find the louvered area needed, multiply the FREE area 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" (240 sq. in.) louvered area would be used. Fig. 5 shows the grille locations.

B.All Air from Outdoors: The confined space shall be provided with two permanent openings, one commencing within 12 inches of the top and one commencing within 12 inches of the bottom of the enclosure. The openings shall communicate directly, or by ducts, with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors.

1.When directly communicating with the outdoors, each opening shall have a minimum free area of one square inch per 4,000 Btu per hour of total input rating of all equipment in the enclosure.

2.When communicating with the outdoors through vertical ducts, each opening shall have a minimum free area of one square inch per 4,000 Btu per hour of total input rating of all equipment in the enclosure.

NOTE

If you use a fireplace or a kitchen or bathroom exhaust fan, you should install an outside air intake. These devices will rob the boiler and water heater of combustion air.

3.When communicating with the outdoors through horizontal ducts, each opening shall have a minimum free area of one square inch per 2,000 Btu per hour of total input rating of all equipment in the enclosure.

4.When ducts are used, they shall be of the same cross- sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall be not less than three inches.

FIG. 5 - AIR OPENINGS FOR CLOSET OR

UTILITY ROOM INSTALLATIONS

FIG. 6 - FRESH AIR DUCT CAPACITIES

Fresh Air Duct Capacities for Ducts Supplying Fresh Air to boiler in tightly constructed houses. British Thermal Units per hour input (Btuh)*.

Fresh Air

 

¼" Mesh

Wood

Metal

Duct Size

 

Screen Btuh

Louvers Btuh

Louvers Btuh

3½"

x

12"

144,000

36,000

108,000

 

 

 

 

 

 

8"

x

8"

256,000

64,000

192,000

8"

x

12"

384,000

96,000

288,000

 

 

 

 

 

 

8"

x

16"

512,000

128,000

384,000

* Based on opening covered by 1/4” mesh screen, wood louvers, or metal louvers

FIG. 7

FRESH AIR DUCT FOR TIGHTLY SEALED HOUSE

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PF Series specifications

The Ultimate Products PF Series represents a remarkable innovation in the realm of personal fitness equipment, catering to both amateur and professional athletes. Designed for versatility and performance, the PF Series includes a variety of machines that focus on strength training, cardio, and overall conditioning. Each unit is crafted with attention to detail, ensuring durability, effectiveness, and ease of use.

One of the standout features of the PF Series is its ergonomic design, which prioritizes user comfort and safety. The equipment is built with high-quality materials that provide robust support during intense workouts. This series includes adjustable components, allowing users to customize settings according to their body type and fitness goals. Such adjustability is essential for maximizing workout efficiency and minimizing the risk of injury.

Technologically, the PF Series incorporates advanced digital interfaces that offer real-time performance tracking. Users can monitor metrics such as time, distance, speed, and calories burned, all displayed on easy-to-read screens. This real-time feedback empowers users to adjust their routines effectively, promoting progress and motivation. The integration of Bluetooth connectivity allows users to sync their data with fitness apps, enabling them to track long-term progress and set achievable goals.

The PF series also includes unique training programs tailored to various fitness levels, ensuring accessibility for beginners while still providing challenging options for seasoned athletes. The variety of workouts available supports muscle diversity and endurance training, facilitating a comprehensive fitness regimen.

In terms of construction, the PF Series employs a solid framework that withstands rigorous workouts. The machines utilize smooth motion technology to provide a seamless experience, reducing wear and tear over time. User-focused features, such as non-slip grips and easy-to-navigate controls, enhance the overall experience, making workouts both enjoyable and efficient.

The Ultimate Products PF Series embodies a commitment to fitness innovation, blending cutting-edge technology with user-centric design. Whether for a home gym or a professional training facility, these machines cater to all fitness enthusiasts seeking to elevate their performance and reach new heights in their fitness journeys. The integration of comfort, advanced technology, and durable construction positions the PF Series as a premier choice in the fitness industry.
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