Desa VMH26TNB AIR for Combustion Ventilation, Determining FRESH-AIR Flow for Fireplace Location

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® VMH26TNB

COMPACT CLASSIC HEARTH FIREPLACE

AIR FOR

COMBUSTION AND

VENTILATION

Continued

DETERMINING FRESH-AIR FLOW FOR FIREPLACE LOCATION

Determining if You Have a Confined or Unconfined Space

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

Space: Includes the room in which you will install fireplace 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 openings, 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: 2560 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 fireplace

 

__________________ Btu/Hr

Example:

 

 

 

Gas water heater*

 

__________________ Btu/Hr

 

 

 

Gas furnace

 

__________________ Btu/Hr

Gas water heater

 

30,000

Btu/Hr

Vented gas heater

 

__________________ Btu/Hr

Vent-free fireplace

+

26,000

Btu/Hr

Gas fireplace logs

+

__________________ Btu/Hr

Total

=

56,000

Btu/Hr

Other gas appliances*

__________________ Btu/Hr

 

 

 

 

Total

=

__________________ Btu/Hr

 

 

 

 

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

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) 56,000 Btu/Hr (actual amount of Btu/Hr used)

The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support. You must provide additional fresh air. Your options are as follows:

A.Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoin- ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 7.

B.Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 7.

C.Install a lower Btu/Hr fireplace, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation.

WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code ANSI Z223.1/NFPA 54, Section 5.3 or applicable local codes.

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107029

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASSafety Information Compact Classic Hearth FireplaceUnpacking Product FeaturesProduct Identification Local CodesAssembling Fireplace AssemblyInstalling Log Assembling HoodUnusually Tight Construction AIR for Combustion and VentilationProviding Adequate Ventilation Confined and Unconfined SpaceAIR for Combustion Ventilation Determining FRESH-AIR Flow for Fireplace LocationDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Check GAS Type InstallationInstallation Items Locating FireplaceBUILT-IN Fireplace Installation Locate fireplace where moving vehicle will not hit itOptional Mantel Installation Mantel Clearances for Built-In InstallationInstalling Blower Assembly Installing Blower Accessory GA3450TRemoving Upper Louver Assembly Assembling Brass Trim Brass trim shipped with mantelInstall the switch plate on the valve For Built-In Installation Wiring Diagram For Blower Accessory Built-In InstallationConnecting to GAS Supply Extension CordAttaching Wood Base to Solid Floor Connecting Equipment Shutoff Valve to Heater Control Installation Items NeededPressure Testing Gas Supply Piping System Pressure Testing Fireplace Gas ConnectionsChecking GAS Connections For Your Safety Read Before Lighting Operating FireplaceLighting Instructions Inspecting Burner Burner Flame Pattern Cleaning and MaintenanceCleaning Burner Injector Holder and Pilot AIR Inlet Hole CabinetTroubleshooting Observed Problem Possible Cause RemedyMaintenance, Gas leak. See Warning statement at Service Hints SpecificationsReplacement Parts Technical ServiceIllustrated Parts Breakdown VMH26TNB17Parts List VMH26TNBAccessories 107029 Warranty Information

VMH26TNB specifications

The Desa VMH26TNB is a versatile and innovative heating appliance designed to meet the demands of modern home environments. This unit combines cutting-edge technology with practical features to provide efficient heating solutions for various spaces.

One of the key highlights of the VMH26TNB is its impressive heat output. With a powerful capacity, it can effectively heat large areas, making it ideal for living rooms, open-concept spaces, or even commercial settings. Its heating efficiency is bolstered by the incorporation of advanced thermal conduction materials that ensure maximum warmth with minimal energy consumption.

Another notable feature of the Desa VMH26TNB is its user-friendly control system. Equipped with a digital thermostat, this model allows users to set their desired temperature with precision. The intuitive interface provides real-time feedback, enabling users to monitor their energy usage and adjust settings accordingly for optimal comfort.

The VMH26TNB is also designed with safety in mind. It includes multiple safety features, such as overheat protection and a tip-over switch that automatically shuts off the unit in case it tips over. These features are crucial in preventing accidents, making this heater a reliable addition to any home.

In terms of technology, the Desa VMH26TNB stands out with its energy-efficient operation, which is compliant with modern energy standards. It uses a combination of infrared and convection heating methods that distribute warmth evenly throughout the room. This dual heating technology not only enhances comfort but also reduces energy costs.

Additionally, the unit is designed with aesthetics in mind. Its sleek and contemporary design allows it to blend seamlessly with various interior styles, making it not just a functional appliance but also an attractive element of home decor.

Lastly, ease of maintenance is another characteristic that enhances the desirability of the VMH26TNB. Its filter is easily accessible for cleaning, ensuring that the device operates at peak performance over time.

In summary, the Desa VMH26TNB is a powerful, efficient, and safe heating solution that caters to modern heating needs while providing style and convenience. Its blend of advanced technology and thoughtful design makes it an excellent choice for both residential and commercial applications.
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