VENTED NATURAL GAS LOGS

AIR FOR COMBUSTION AND VENTILATION

WARNING: This appliance shall not be installed in a con- fined space or unusually tight construction unless provisions are provided for adequate com- bustion and ventilation air. Read the following instructions to in- sure proper fresh air for this and other fuel-burning appliances in your home.

Today’s homes are built more energy effi- cient 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 com- bustion and ventilation.

Exhaust fans, fireplaces, clothes dryers, and fuel burning appliances draw air from the house to operate. You must provide ad- equate 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, NFPA 54/ANS Z223.1, Sec- tion 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 4 through 6 will help you classify your space and provide adequate ventilation.

Unusually Tight Construction

The air that leaks around doors and win- dows 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 de- fined 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 (6x10-11kg per pa-sec-m2) or less with open- ings 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, be- tween sole plates and floors, be- tween wall-ceiling joints, be- tween wall panels, at penetra- tions for plumbing, electrical, and gas lines, and at other openings.

If your home meets all of the three criteria above, you must provide ad- ditional fresh air. See Ventilation Air From Outdoors, page 6.

If your home does not meet all of the three criteria above, proceed to De- termining Fresh-Air Flow For Appli- ance Location, page 5.

Confined and Unconfined Space

The National Fuel Gas Code, ANS Z223.1 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 aggre- gate 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 communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are con- sidered a part of the unconfined space.

This log set shall not be installed in a con- fined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air.

*Adjoining rooms are communicating only if there are doorless passageways or ventila- tion grills between them.

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Desa FVMR24, FVMR18 AIR for Combustion and Ventilation, Providing Adequate Ventilation, Unusually Tight Construction
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FVMR24, FVMR18 specifications

Desa FVMR18 and FVMR24 are innovative models that stand out in the world of HVAC (Heating, Ventilation, and Air Conditioning) systems. Designed for modern living and commercial environments, these units combine efficiency, performance, and advanced technology to meet diverse climate control needs.

The FVMR18 is designed for residential spaces, featuring a compact and sleek design that easily fits into various interior layouts. Its primary strength lies in its energy efficiency, boasting an impressive SEER (Seasonal Energy Efficiency Ratio) rating. This not only reduces overall power consumption but also minimizes utility bills, aligning with eco-friendly initiatives. The FVMR24, on the other hand, caters to larger areas, including commercial buildings, offering enhanced cooling and heating capabilities.

Both models utilize inverter technology, which allows them to adjust the compressor speed based on the ambient temperature. This means the units can operate more quietly and sustainably, delivering just the right amount of heating or cooling without the drastic fluctuations typical of conventional systems. The inverter technology also contributes significantly to the longevity of the unit, preventing wear and tear associated with frequent restarts.

A standout feature of both the FVMR18 and FVMR24 units is their advanced air filtration system. Equipped with HEPA filters, these models not only provide optimal temperature control but also ensure a clean and healthy indoor environment by capturing dust, allergens, and other airborne particles. This is particularly beneficial for those with respiratory issues or allergies.

Another key characteristic is the user-friendly interface, which includes a smart remote control and compatibility with smart home systems. This allows users to easily adjust temperatures, set timers, and monitor energy consumption through mobile applications. Additionally, both units are designed with quiet operation technology, ensuring minimal noise disruption, which is crucial in residential and office settings.

In summary, Desa FVMR18 and FVMR24 models represent a blend of cutting-edge technology and user-centric features. With their efficient performance, advanced filtration, and smart capabilities, they effectively address the diverse demands of contemporary climate control, making them a valuable investment for both home and business environments.
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