AIR FOR

COMBUSTION AND

VENTILATION

WARNING

This heater shall not be installed in a confined space unless

provisions are provided for adequate combustion and ventilation

air. Read the following instructions to insure proper fresh air for

this and other fuel-burning appliances in your home.

Today's homes are built more energy efficient than ever. New materials, increased insulation, and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months, home owners want their homes as airtight as possible.

While it is good to make your home energy efficient, your home needs to breathe. Fresh air must enter your home. All fuel-burning appliances need fresh air for proper combustion and ventilation.

Exhaust fans, fireplaces, clothes dryers, and fuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances.

This will insure proper venting of vented fuel-burning appliances.

PROVIDING ADEQUATE VENTILATION

The following is excerpts from National Fuel Gas Code. NFPA 54/ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation.

All spaces in homes fall into one of the three following ventilation classifications:

1. Unusually Tight Construction; 2. Unconfined Space; 3. Confined Space.

The information on pages 5 through 7 will help you classify your space and provide adequate ventilation.

Unusually Tight Construction

The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction you must provide additional fresh air.

Unusually tight construction Is defined as construction where:

a. walls and ceilings exposed to the outside atmosphere have a con- tinuous water vapor retarder with a rating of one perm (6x10 "11per pa.aec.m =) or less with openings gasketed or sealed and

b. weather stripping has been added on openable windows and doors and c. caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceiling Joints, between wall panels, at penetrations for plumbing, electrical, and

gas lines, and at other openings.

If your home meets all of the three criteria above, you must provide addi- tional fresh air. See Ventilation Air From Outdoors, page 7.

If your home does not meet all of the three criteria above, proceed to page 6.

Confined and Unconfined Space

The National Fuel Gas Code (ANSIZ223.1, 1992 Section 5.3) defines a confinod

space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m 3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m 3per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space.

* Adjoining rooms are communicating

only if there are doorless passageways

or

ventilation grills between them.

Continued

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Desa Tech CGD3930PT, CGD3924PT installation manual AIR for Combustion Ventilation, Unusually Tight Construction
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CGD3924PT, CGD3930PT specifications

The Desa Tech CGD3924PT and CGD3930PT are sophisticated heating solutions designed to provide warmth and comfort in various residential settings. These models reflect the company's commitment to quality, efficiency, and user-friendliness, making them ideal for homeowners seeking reliable heat sources during colder months.

One of the standout features of both the CGD3924PT and CGD3930PT is their powerful heating capability. The CGD3924PT boasts an impressive heat output of 24,000 BTUs, while the CGD3930PT offers a robust 30,000 BTUs, ensuring they can effectively warm larger spaces quickly. This makes them suitable for living rooms, basements, and even commercial settings where efficient heating is crucial.

Both models are equipped with advanced infrared technology, which allows for more efficient heat distribution. This technology ensures that warmth is evenly dispersed throughout the room, minimizing cold spots and enhancing comfort. Additionally, the infrared heating process is known for being energy-efficient, translating to lower energy bills for the homeowner.

User convenience is another focus of the Desa Tech CGD series. Each unit is designed with an easy-to-use control panel that allows for simple adjustment of the temperature settings. This intuitive interface, combined with features like a remote control on the CGD3930PT, offers users the ability to manage their heating preferences effortlessly from anywhere in the room.

Safety is paramount, and Desa Tech takes it seriously. Both models feature an automatic shut-off mechanism that activates under specific conditions, providing peace of mind to users, especially in households with children or pets. In addition, the units incorporate a built-in oxygen depletion sensor, which ensures that the unit operates safely in enclosed spaces by shutting off if oxygen levels drop too low.

The aesthetic design of the CGD3924PT and CGD3930PT is another noteworthy characteristic. Both models feature a sleek, modern finish that can complement a variety of interior decor styles. They can be easily integrated into existing home designs without compromising overall aesthetics.

In summary, the Desa Tech CGD3924PT and CGD3930PT are powerful, efficient, and user-friendly heating solutions. With their advanced infrared technology, considerable heat outputs, straightforward controls, safety features, and attractive designs, they stand out as excellent choices for anyone looking to improve their home heating experience. Whether you’re seeking to warm up a cozy living space or a larger commercial area, these units deliver performance and reliability, making them worthy investments for any homeowner.
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