AIR FOR COMBUSTION

AND VENTILATION

WARNING: This firebox shall not be installed in a confined space or unusually tight con- struction unless provisions are provided for adequate combus- tion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home.

Todayʼs 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 effi- cient, 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, fireboxes, 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 are excerpts from National Fuel

Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.

All spaces in homes fall into one of the three fol- lowing ventilation classifications:

1.Unusually Tight Construction

2.Unconfined Space

3.Confined Space

The information on pages 7 through 9 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 out- side atmosphere have a continuous water vapor retarder with a rating of one perm (6 x 10-11kg per pa-sec-m2) 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 additional fresh air. See Ventilation Air From Outdoors, page 9.

If your home does not meet all of the three criteria above, proceed to Determining Fresh-Air Flow for Heater Location, page 8.

Confined and Unconfined Space

The National Fuel Gas Code, ANSI Z223.1/NFPA 54 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 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 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms com- municating 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.

116746-01A

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Desa VSGF36NRA, VSGF36NTA AIR for Combustion Ventilation, Providing Adequate Ventilation, Unusually Tight Construction
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VSGF36NRA, VSGF36NTA, VSGF36PTA, VSGF36PRA specifications

Desa VSGF36PRA, VSGF36PTA, VSGF36NTA, and VSGF36NRA are various models from a contemporary line of gas fireplaces that combine aesthetics, functionality, and advanced technology to enhance residential spaces. Each model offers unique features and characteristics designed to meet different consumer needs and preferences.

The VSGF36PRA model stands out with its radiant heat and realistic flame display, effectively mimicking the experience of a traditional wood-burning fireplace. Its easy installation process makes it a viable choice for both new constructions and retrofitting existing spaces. The model utilizes high-efficiency gas burning technology, ensuring a warm and cozy environment while maintaining energy savings. Furthermore, it boasts a stylish design that can seamlessly integrate into any living room setting.

The VSGF36PTA is another dynamic addition to the lineup, featuring a traditional appearance with modern advancements. This model is known for its programmable thermostat that allows homeowners to control the temperature more precisely. The patented burner system creates a beautiful and lifelike flame, adding to the ambiance of any room. Additionally, the VSGF36PTA is equipped with a safety shut-off feature, ensuring peace of mind for users.

In contrast, the VSGF36NTA model targets those who appreciate a contemporary design. With its sleek lines and minimalistic facade, it offers an elegant touch to modern homes. This model incorporates advanced electronic ignition and a remote control for effortless operation, allowing users to enjoy their fireplace with convenience. The high-efficiency venting system also ensures optimal performance with lower emissions, making it environmentally friendly.

Lastly, the VSGF36NRA model combines both performance and versatility. This unit is designed for flexible installation options, allowing it to fit into various spaces. The customizable flame height and adjustable fan speed are key features that enhance the user experience. In terms of heating capabilities, the VSGF36NRA is engineered to provide reliable warmth during colder months while ensuring high efficiency.

Overall, the Desa VSGF36 series offers a diverse range of options suitable for various aesthetic preferences and functional needs. Each model features cutting-edge technology, ensuring that homeowners can enjoy the beauty and warmth of a fireplace while benefiting from enhanced efficiency and safety features.
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