COMBUSTION AND VENTILATION AIR

When installed, this gas appliance must be provided with fresh air for combustion, ventilation, and dilution of hot flue gases. The minimum required volume of the area where the appliance is installed should be 50 cubic feet per 1,000 btu/hr.

If installed in an area of the home that is considered an unconfined space, the natural infiltration of air around windows and doors will be adequate. If the area is considered a confined space (less than 50 cubic feet per 1,000 btu), fresh air can be supplied by providing two permanent openings into adjoining rooms. 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 gas appliances in the confined space, but not less than 100 square inches. One of the openings shall be within 12 inches of the ceiling and one within 12 inches of the floor. See Figure A.

If the home is of unusually tight construction (new and remodeled homes), free air must be supplied through opening(s) to the outdoors. This can be accomplished by providing 2 permanent openings, one commencing within 12 inches of the ceiling and one within 12 inches of the floor. These openings shall communicate directly with the outdoors, or spaces that communicate freely with the outdoors, such as a ventilated attic and crawl space through galvanized or equivalent corrosion- resistant ducts. Exception: unobstructed stud and joist spaces are acceptable ducts provided that not more than one fire block is removed. Special provisions must be taken to insure that these stud and joist spaces cannot be blocked with insulation or other objects. Each of these openings using vertical ducts shall have a minimum free area of one square inch per 4,000 btu/hr of total input rating of all gas appliances. See Figure B and C. If horizontal ducts are used, the minimum free area shall be one square inch per 2,000 btu/hr of total input rating of all gas appliances.

Fresh make-up air can also be provided through a duct to one permanent opening commencing within 12 inches of the ceiling. The minimum free area of this opening shall be one square inch per 3,000 btu/hr of the total input rating of all gas appliances but not less than the sum of the areas of all vent connectors in the space. See Figure D.

When calculating the amount of fresh air needed you must include make-up air requirements for the operation of exhaust fans, kitchen ventilation systems, clothes dryers, and fireplaces.

Additional information can be found in the latest edition of ANSI Z223.1 (National Fuel Gas Code).

Page 5

F

ALL COMBUSTION AIR FROM ADJACENT INDOOR

SPACES THROUGH INDOOR COMBUSTION AIR

I

OPENINGS

UL Listed Vent Cap

G

UL Listed Gas Vent

 

U

 

R

Opening

E

 

A

 

 

Opening

 

 

 

 

 

 

 

 

 

F

 

ALL COMBUSTION AIR FROM OUTDOORS, INLET

 

AIR FROM VENTILATED CRAWL SPACE AND

 

 

I

 

OUTLET AIR TO VENTILATED ATTIC

 

UL Listed Vent Cap

G

 

UL Listed Gas Vent

 

 

Ventilation Louvers (each

U

 

 

end of attic)

 

 

 

R

 

 

Outlet Air

E

 

 

 

 

Inlet Air

 

 

 

B

 

Ventilation

Louvers for unheated crawl space

 

 

 

 

 

 

 

 

F

 

ALL COMBUSTION AIR FROM OUTDOORS

 

THROUGH VENTILATED ATTIC

I

 

UL Listed Vent Cap

 

UL Listed Gas Vent

G

 

 

Ventilation Louvers (each

 

 

end of attic)

U

 

 

 

 

 

R

 

Inlet

 

E

 

Grille

Outlet Air

 

Inlet

Inlet Air Duct (ends 1 ft.

 

 

[300mm] above floor)

 

 

Grille

C

 

 

 

 

 

 

 

 

 

 

 

F

 

ALL COMBUSTION AIR FROM OUTDOORS

 

THROUGH SINGLE COMBUSTION AIR OPENING

 

UL Listed Vent Cap

I

 

UL Listed Gas Vent

 

 

G

 

 

 

U

 

 

 

R

 

 

Opening

 

 

 

E

 

 

Alternate Opening

 

 

Location

 

 

 

D

 

 

 

Page 4 Page 6
Page 5
Image 5
Louisville Tin and Stove CF354C-R Combustion and Ventilation AIR, ALL Combustion AIR from Adjacent Indoor, Openings
Page 4 Page 6

CF354C-R, CF504R, CF654C-R specifications

The Louisville Tin and Stove CF654C-R, CF504R, and CF354C-R are three distinctive models designed to provide efficient heating solutions tailored for various spaces and specific needs. Known for their stylish design and practical functionality, these units stand as a testament to craftsmanship in modern heating technology.

One of the main features of these models is their robust construction. Crafted from durable materials, they are designed to withstand the rigors of daily use while providing reliable heat. The units showcase a combination of classic aesthetics and modern functionality, allowing them to fit seamlessly in any home environment, be it traditional or contemporary.

The CF654C-R model stands out with its higher heating capacity, making it ideal for larger rooms or spaces that require significant warmth. It uses innovative heat distribution technology that ensures even warmth throughout the area, eliminating cold spots and enhancing comfort. The integrated thermostat allows users to maintain optimal temperatures effortlessly, further emphasizing energy efficiency.

The CF504R model, while slightly smaller, does not compromise on performance. It offers a perfect solution for medium-sized spaces, featuring a user-friendly interface that makes it easy to adjust settings to suit individual preferences. Advanced combustion technology maximizes fuel efficiency, resulting in lower energy bills while still delivering the heating power you expect.

The CF354C-R is tailored for smaller areas, making it the perfect choice for cozy rooms or as an additional heat source in larger homes. Despite its compact size, it is engineered with a high thermal efficiency rating, ensuring that it uses minimal fuel to produce significant heat. Its minimalist design fits easily into smaller spaces without occupying much room, making it a versatile addition to any home.

Each model integrates modern safety features, including flame failure safety devices and protective screens, ensuring peace of mind for users. Additionally, all three models are designed to accommodate a variety of fuel types, allowing homeowners to choose based on convenience and availability.

In summary, the Louisville Tin and Stove CF654C-R, CF504R, and CF354C-R are versatile heating solutions that cater to different needs, with a focus on durability, efficiency, and user-friendly operation. With their unique features and technologies, they remain a popular choice for anyone looking to enhance their home’s heating system.
Top Page Image Contents