AIR FOR COMBUSTION AND VENTILATION CONTINUED

Determining ifYou Have a Confined or Unconfined Space

Use this worksheet to determine if you have a confined or unconfined space.

Space: Includes the room in which you will install the firebox plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.

1.Determine the volume of the space (length x width x height).

Length x Width x Height =

_______________ cu. Ft. (volume of space)

Example: Space size

22 ft. (length) x 18 ft. (width) x 8 ft. (ceiling height) =

 

3168 cu. Ft. (volume of space)

If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space.

2.Divide the space volume by 50 cubic feet to determine the maximum BTU/Hr the space can support.

_________ (volume of space) 50 cu. Ft. = (Maximum BTU/Hr the space can support)

Example: 3168 cu. Ft. (volume of space) 50 cu. Ft. = 63.3 or 63,300 (maximum BTU/Hr the space can support)

3.Add the BTU/Hr of all fuel-burning appliances in the space.

Vent-free Firebox

 

__________________

BTU/Hr

Gas water heater*

 

__________________

BTU/Hr

Gas furnace

 

__________________

BTU/Hr

Vented gas heater

 

__________________

BTU/Hr

Gas firebox logs

 

__________________

BTU/Hr

Other gas appliances*

+ __________________

BTU/Hr

Total

= __________________

BTU/Hr

Example: Gas water Heater

 

40,000

BTU/Hr

Vent-free firebox with log heater

+

39,000

BTU/Hr

Total

=

79,000

BTU/Hr

*Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.

4.Compare the maximum BTU/Hr the space can support with the actual amount of BTU/ Hr used.

______________

BTU/Hr (maximum the space can support)

______________

BTU/Hr (actual amount of BTU/Hr used)

Example: 63,300 BTU/Hr (maximum the space can support) 79,000 BTU/Hr (actual amount of BTU/Hr used)

The space in the above example is a confined space because the actual BTU/Hr used is more than the maximum BTU/Hr the space can support. You must provide additional fresh air.

Your options are as follows:

A.Rework worksheet, adding the space of an adjoining room. If the extra space provides

an unconfined space, remove door to adjoining room or add ventilation grills between

8rooms. See Ventilation Air From Inside Building, page 9.

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United States Stove 2020N manual Determining ifYou Have a Confined or Unconfined Space

2020N specifications

The United States Stove 2020N is a versatile and efficient wood-burning stove designed to provide effective heating for medium to large spaces. Crafted with a strong focus on performance and user convenience, this model combines traditional aesthetics with modern technology, making it an ideal choice for homeowners seeking a reliable and sustainable heating solution.

One of the standout features of the 2020N is its robust construction. The stove is made from heavy-duty cast iron and steel, ensuring durability and longevity. Its impressive heat output of up to 80,000 BTUs per hour makes it capable of heating areas ranging from 1,200 to 2,400 square feet, depending on insulation and layout. This makes the 2020N suitable for everything from cozy cabins to large living spaces.

The design of the 2020N includes a large viewing window that allows users to enjoy the ambiance of the flames while providing efficient heating. The built-in air wash system keeps the glass clean and clear, enhancing the overall aesthetic while minimizing maintenance. This feature is particularly beneficial for those who appreciate the visual appeal of a wood fire without the hassle of frequent cleaning.

In terms of efficiency, the United States Stove 2020N is EPA-certified, meaning it meets stringent emissions guidelines. This certification ensures that the stove burns wood more completely, which not only produces more heat but also reduces pollutants released into the atmosphere. Users benefit from a higher efficiency rating, translating into lower fuel costs over time.

The 2020N is designed with user-friendly features, including a straightforward manual draft control that allows for easy adjustment of airflow and fire intensity. This gives users the ability to customize their heating experience according to their preferences and needs.

Additionally, the stove comes equipped with a rear exit flue for easy installation options, allowing for flexibility in how it can be set up within a home. Its compact design and classic appearance enable it to fit seamlessly into a variety of home decors, adding both functionality and charm.

Overall, the United States Stove 2020N stands out as an excellent wood-burning stove choice, combining efficiency, durability, and ease of use. Homeowners seeking a reliable heating solution will find that the 2020N meets their needs while offering the comfort and ambiance of a traditional wood fire.