Desa VGL24NR Determining FRESH-AIR Flow for Heater Location, Unusually Tight Construction

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AIR FOR COMBUSTION AND VENTILATION

Providing Adequate Ventilation (Cont.) Determining Fresh-Air Flow For Heater Location

5

AIR FOR COMBUSTION AND VENTILATION

Continued

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 outside 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 win- dows 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 6.

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

Confined Space 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 communicating 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.

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Confined or Unconfined Space

Use this work sheet to determine if you have a confined or unconfined space.

Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.

1.Determine the volume of the space (length x width x height). Length x Width x Height = ___________ cu. ft. (volume of space)

Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)

If additional ventilation to adjoining room is supplied with grills or open- ings, add the volume of these rooms to the total volume of the space.

2.Multiply the space volume by 20 to determine the maximum Btu/Hr the space can support.

__________ (volume of space) x 20 = (Maximum Btu/Hr the space

can support)

Example: 2,560 cu. ft. (volume of space) x 20 = 51,200 (maximum Btu/Hr the space can support)

3.Add the Btu/Hr of all fuel burning appliances in the space.

Vent-free heater

 

_____________ Btu/Hr

Gas water heater*

 

_____________ Btu/Hr

Gas furnace

 

_____________ Btu/Hr

Vented gas heater

 

_____________ Btu/Hr

Gas fireplace logs

 

_____________ Btu/Hr

Other gas appliances* +

_____________ Btu/Hr

Total

=

_____________ Btu/Hr

*Do not include direct-vent gas appliances. Direct-vent draws com- bustion air from the outdoors and vents to the outdoors.

Example:

 

 

 

Gas water heater

 

40,000

Btu/Hr

Vent-free heater

+

39,000

Btu/Hr

Total

=

79,000

Btu/Hr

4.Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.

__________________ Btu/Hr (maximum the space can support)

__________________ Btu/Hr (actual amount of Btu/Hr used)

Example: 51,200 Btu/Hr (maximum the space can support) 79,000 Btu/Hr (actual amount of Btu/Hr used)

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111640-01B

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Contents What to do if YOU Smell GAS Unvented VENT-FREE GAS LOG HeaterSafety Information Table of ContentsVent-Free Gas Log Heater Product IdentificationRemote Control Accessories Product FeaturesLocal Codes UnpackingUnusually Tight Construction Determining FRESH-AIR Flow for Heater LocationConfined Space and Unconfined Space Determining if You Have a Confined or Unconfined SpaceVentilation Air From Outdoors Ventilation AIRVentilation Air From Inside Building Check GAS Type InstallationLog Size Side Wall Ceiling Minimum Firebox Size Log Front Rear Height Depth WidthMinimum Noncombustible Material Clearances If Not Using MantelMantel Clearances Determining Minimum Mantel Clearances When Using a HoodFloor Clearances Determining Minimum Mantel ClearancesInstalling Heater Base Assembly Installing Damper Clamp Accessory for Vented OperationInstallation Items Needed Minimum Chimney Permanent Flue Height ft. Opening sq. insAttaching Base Assembly to Fireplace Floor Connecting to GAS SupplyChecking GAS Connections Pressure Testing Gas Supply Piping systemInstalling Remote Receiver Installing Optional Remote AccessoriesPressure Testing Heater Gas Connections Installing 9-Volt Battery in Receiver Installing LogsOperating Heater For Your Safety Read Before LightingTo Turn OFF GAS To Appliance Lighting InstructionsShutting Off Heater Shutting Off Burners Only pilot stays litManual Mode Manual Lighting ProcedureOptional HAND-HELD Remote Operation ON/OFF Series Model CghrcbSafety Features Auto Thermostatic ModeInspecting Burners Pilot Flame PatternLogs Cleaning MaintenanceCleaning Burner Injector Holder and Pilot AIR Inlet Hole Observed Problem Possible Cause Remedy TroubleshootingSee Wiring Diagram, Gas leak. See Warning statement at TopSpecifications Wiring Diagram Replacement PartsService Hints Technical ServiceModels VGL24PR and VGL24NR Illustrated Parts BreakdownKEY Part Number VGL24PR VGL24NR Description QTY Parts ListReceiver and HAND-HELD Remote Control KIT Cghrcb Series Cleaning KIT CCKEquipment Shutoff Valve Fireplace HoodOwners Registration Form Postage Required 111640-01B Warranty Information

VGL24PR, VGL24NR specifications

Desa VGL24NR and VGL24PR are innovative heating solutions designed to provide efficient and effective warmth for residential and commercial spaces. With their modern design and advanced technologies, these gas fireplaces offer both aesthetic appeal and functional performance.

One of the main features of the VGL24NR and VGL24PR models is their ventless operation. This means they do not require a chimney or venting system, making them an ideal choice for various installation scenarios. The lack of venting not only simplifies the installation process but also allows for more flexible placement within a room, enabling users to enjoy the warmth and ambiance of a fire wherever it fits best.

These models are equipped with a versatile heating capacity that can efficiently warmth up spaces of various sizes. With an impressive output, they are perfect for both cozy living rooms and larger family areas. The adjustable flame height allows users to customize their heat output, optimizing energy use while still achieving desired warmth levels.

In terms of technology, the Desa VGL24NR and VGL24PR feature advanced safety systems that ensure peace of mind for users. The oxygen depletion sensor automatically shuts off the unit if oxygen levels fall below a safe threshold. This invaluable feature makes these fireplaces a safe choice, particularly in enclosed environments.

Both models are designed with user convenience in mind. The easy-to-use remote control provides effortless operation, allowing users to adjust the flame and heat settings from the comfort of their seats. The wide viewing area enhances the visual appeal, providing a stunning flame display that can serve as a focal point in any room.

With regard to aesthetics, the Desa VGL24NR and VGL24PR come in a variety of finishes and styles, catering to diverse design preferences. Whether one prefers a contemporary look or a more traditional aesthetic, these fireplaces can seamlessly complement any décor.

Energy efficiency is another hallmark of the VGL24NR and VGL24PR models. They utilize clean-burning gas, which not only minimizes environmental impact but also reduces heating costs. By heating spaces quickly and effectively, these fireplaces provide an economical heating solution with long-term benefits.

In summary, the Desa VGL24NR and VGL24PR gas fireplaces combine modern design with innovative technology and robust safety features. Their ventless operation, adjustable heat output, and remote functionality make them suitable for various applications, enhancing comfort and style in any setting. For those seeking a reliable and aesthetically pleasing heating solution, these models offer an excellent option.
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