Desa FVFM27NR AIR for Combustion and Ventilation, Providing Adequate Ventilation

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FIREPLACE MANUFACTURERS INCORPORATED

UNVENTED NATURAL GAS LOG HEATER

AIR FOR COMBUSTION AND VENTILATION

WARNING: This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ven- tilation air. Read the following in- structions to insure 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 own- ers 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 Deter- mining Fresh-Air Flow For Heater Lo- cation, page 5.

Confined and Unconfined Space

The National Fuel Gas Code (ANS Z223.1, 1992 Section 5.3) 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 communicating directly with the space in which the appliances are in- stalled*, through openings not furnished with doors, are considered a part of the unconfined space.

This heater 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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Contents Millivolt Remote Control Ready Model FVFM27NRWhat to do if YOU Smell GAS Patent PendingSafety Information Product Features Remote Control AccessoriesProduct Identification Local CodesAIR for Combustion and Ventilation Providing Adequate VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From InsideBuilding Ventilation Air From OutdoorsInstallation Check GAS TypeMinimum Wall and Ceiling Clearances see Figure Log Size Side Wall CeilingIf Using Mantel If Not Using MantelMinimum Noncombustible Material Clearances Eration,Determining Minimum Mantel Clearance When Using a Hood Mantel ClearancesFloor Clearances Determining Minimum Mantel ClearanceInstalling Damper Clamp Accessory for Vented Operation Installing Heater Base AssemblyInstallation Items Needed Area of Various Standard Round FluesConnecting to GAS Supply Attaching Flexible Gas Hose to HeaterPressure Testing Gas Supply Piping System Pressure Testing Heater Gas ConnectionsChecking GAS Connections Test Pressures In Excess Of 1/2 PsigInstalling Logs Installing Bottom Log #1Operating Heater For Your Safety Read Before LightingInstructions To Turn OFF GAS To Appliance Manual Lighting ProcedureOptional Remote Operation Inspecting Burners Pilot Flame PatternBurner Primary AIR Holes Main BurnerTroubleshooting Observed Problem Possible CauseObserved Problem Possible Cause Remedy Maintenance,Top Gas leak. See Warning statement at topCleaning and Maintenance SpecificationsService Hints Technical ServiceReplacement Parts AccessoriesWiring Diagram Illustrated Parts Breakdown FVFM27NRParts List Description QTYWarranty Information Limited Warranty VENT-FREE Natural GAS LOG Heaters

FVFM27NR specifications

Desa FVFM27NR is a modern and innovative product that embodies cutting-edge technology and design aesthetics, making it a standout choice in its category. This versatile device is tailored to meet the demands of consumers who seek both efficiency and performance in their daily activities.

One of the key features of the FVFM27NR is its robust build quality, which ensures durability and longevity. Constructed using high-grade materials, the device is designed to withstand regular use while maintaining a sleek appearance. This attention to detail not only enhances its functionality but also contributes to an appealing visual presence.

The FVFM27NR is equipped with advanced technologies that elevate its performance. With a powerful engine, the device delivers superior results across various applications. The incorporation of smart technology allows users to control and customize settings according to their specific needs, providing an intuitive user experience. Ergonomic design elements further enhance usability, ensuring that the device is comfortable to handle even during extended use.

Energy efficiency is another hallmark of the FVFM27NR. It integrates eco-friendly technologies that minimize power consumption without sacrificing performance. The energy-efficient operation not only reduces utility costs for users but also contributes positively to environmental sustainability.

Along with its efficiency and power, the FVFM27NR features a range of specialized modes that cater to different tasks. This versatility makes it suitable for various environments, whether in a home, office, or outdoor setting. The ability to switch between modes with ease allows for quick adaptation, making it a practical tool for users with diverse requirements.

Additionally, the FVFM27NR is designed with user safety in mind. It incorporates multiple safety features, including automatic shut-off and thermal protection, ensuring peace of mind during operation.

In conclusion, Desa FVFM27NR stands out as a leading option in its market segment, thanks to its combination of robust design, advanced technology, energy efficiency, versatility, and user safety. Whether for professional or personal use, it delivers exceptional value, making it an ideal investment for anyone seeking a reliable and effective device. With its modern features and characteristics, the FVFM27NR is well-positioned to meet contemporary lifestyle needs while ensuring optimal performance and satisfaction.
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