Desa VN30BTA, VP30BTA, VP20BTA Air For Combustion Ventilation, Providing Adequate Ventilation

Page 5

Air For Combustion

and Ventilation

WARNING: This heater 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.

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 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, 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 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 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 con- struction where:

a.walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm (6x10-11kg 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 Ventila- tion Air From Outdoors, page 7.

If your home does not meet all of the three criteria above, proceed to Determining Fresh-Air Flow For Heater Location, page 6.

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.

113061-01Fwww.desatech.com

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Contents Models VN20BTA, VP20BTA VN30BTA and VP30BTA What to do if YOU Smell GASSafety Information Table of ContentsSafety Information Product Features Safety InformationLocal Codes UnpackingProviding Adequate Ventilation Air For Combustion VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining if You Have a Confined or Unconfined Space AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation AIR InstallationCheck GAS Type Ventilation Air From Inside BuildingLocating Heater InstallationInstallation Items Thermostat Sensing Bulb Installing Heater to WallPlacing Heater On Mounting Bracket Installing Bottom Mounting ScrewsAttaching To Wall Anchor Method Mounting Base Feet to Floor Where Required by local code Connecting to GAS SupplyMounting heater to floor Mounting Base Feet to HeaterTypical Inlet Pipe Diameters Checking GAS ConnectionsNatural Gas Propane/LPTest Pressures Equal To or Less Than Psig 3.5 kPa Pressure Testing Heater Gas ConnectionsOperating Heater For Your Safety Read Before LightingLighting Instructions Ignitor Button Control KnobInspecting Heater Operating HeaterODS/PILOT and Burner Cleaning MaintenanceBurner Pilot Air Inlet CabinetObserved Problem Possible Cause Remedy TroubleshootingTroubleshooting Maintenance, Statement above Gas leak. See WarningService Hints SpecificationsTechnical Service Service Publications Replacement PartsVN20BTA, VP20BTA, VN30BTA, VP30BTA Illustrated Parts BreakdownModels NJF 8C Parts listKeep this Warranty Warranty Information

VN20BTA, VN30BTA, VP20BTA, VP30BTA specifications

Desa VN30BTA, VP20BTA, VP30BTA, and VN20BTA are four advanced models from Desa that cater to diverse heating needs, incorporating innovative technologies and features aimed at enhancing performance and user experience.

The VN30BTA is renowned for its robust output and efficient heating capabilities. It features high thermal efficiency, enabling homeowners to enjoy optimal heat without excessive energy consumption. This model is equipped with advanced safety mechanisms, including automatic shut-off systems, ensuring user safety and peace of mind. Additionally, it has a stylish design that fits well in various home aesthetics.

Moving to the VP20BTA, this model is specifically designed for versatility and is capable of heating medium to large spaces efficiently. The VP20BTA has a user-friendly control interface, allowing for easy adjustments to temperature settings. Its compact form factor makes it ideal for those who have limited space but still desire a powerful heating solution. Furthermore, it leverages smart thermostat technology to maintain consistent temperatures while optimizing energy consumption.

The VP30BTA offers the highest heating output among this line, making it suitable for larger homes and commercial applications. This model incorporates cutting-edge infrared technology, which promotes even heat distribution. It also features a durable construction that ensures longevity and stability during operation. The VP30BTA is praised for its low emissions and eco-friendly design, appealing to environmentally conscious consumers.

Lastly, the VN20BTA serves as an entry-level option that combines affordability with reliability. Despite being the most budget-friendly model, it still maintains high standards of safety and efficiency. The VN20BTA is easy to install and operate, making it an excellent choice for those new to heating solutions. Its lightweight design and portability provide flexibility in usage, allowing users to move the unit as needed.

All these models showcase Desa's commitment to innovation, safety, and efficiency, making them solid choices for any heating requirement. Their features, from advanced safety systems to eco-friendly designs, reflect a comprehensive approach to modern heating solutions that meet the demands of various consumers. Whether for residential or commercial use, Desa's VN30BTA, VP20BTA, VP30BTA, and VN20BTA models stand out as reliable and effective heating options.
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