Desa VYM27NR AIR for Combustion and Ventilation, Providing Adequate Ventilation

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VANGUARD FLAME MAX®

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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104674

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Contents OWNER’S Operation and Installation Manual Remote Control Ready ModelWhat to do if YOU Smell GAS Patent PendingSafety Information Vanguard Flame MAX Unvented Natural GAS LOG HeaterProduct 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 Installation ClearancesCheck GAS Type Minimum Fireplace Clearance to Combustible MaterialsIf Using Mantel If Not Using MantelMinimum Noncombustible Material Clearances 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 Chimney Minimum Permanent Height ft Flue Opening sq. insConnecting 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 topWiring Diagram Replacement Parts SpecificationsService Hints Technical ServiceCleaning Burner Injector Holder and Pilot AIR Inlet Hole Cleaning and MaintenanceLogs Illustrated Parts Breakdown VYM27NRParts List Description QTYAccessories 104674 Limited Warranty VENT-FREE Natural GAS LOG Heaters International

VYM27NR specifications

Desa VYM27NR is a cutting-edge piece of technology designed to meet the demanding needs of modern users while ensuring energy efficiency and superior performance. This innovative device integrates advanced features and smart technologies that make it a popular choice among professionals and consumers alike.

One of the main features of the Desa VYM27NR is its robust performance powered by a high-efficiency motor. This motor is capable of delivering exceptional power output while minimizing energy consumption, which contributes to lower operational costs. The unit operates quietly, making it suitable for use in residential areas without causing disruption.

In addition to its powerful motor, the Desa VYM27NR is equipped with smart sensors that automatically adjust performance based on user requirements. This intelligent adjustment ensures optimal operation, resulting in enhanced user experience. The device also includes an intuitive control panel that allows users to easily monitor and manage settings, further simplifying its use.

Another noteworthy characteristic of the Desa VYM27NR is its compact and lightweight design. This portability allows users to easily move it between different locations or store it without taking up much space. It is constructed from durable materials that ensure longevity and reliability, making it a sound investment for any user.

The technology behind Desa VYM27NR also includes enhanced safety features. It is equipped with multiple safety sensors that provide protection against overheating and electrical surges, ensuring the device operates within safe parameters at all times.

Furthermore, the Desa VYM27NR boasts environmental responsibility with its eco-friendly operating capabilities. It adheres to stringent regulations regarding emissions and energy use, thus aligning with global efforts towards sustainability.

In summary, the Desa VYM27NR showcases a blend of powerful performance, user-friendly features, and safety technologies. Its compact design, efficient energy use, and eco-friendly attributes make it stand out in the market, appealing to a diverse range of users who seek efficiency and reliability in their devices. Whether for personal or professional use, the Desa VYM27NR promises to deliver exceptional performance and value, making it a top choice in its category.
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