Desa VMH3000TNA AIR for Combustion and Ventilation, Providing Adequate Ventilation

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OWNER’S MANUAL

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 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 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 5 through 7 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 7.

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

Confined and Unconfined Space

The National Fuel Gas Code, ANS Z223.1 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 aggre- gate 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 con- sidered 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.

Continued

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For more information, visit www.desatech.com

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Contents What to do if YOU Smell GAS OWNER’S Operation and Installation ManualLocal Codes Safety InformationProduct Features AssemblyProduct Identification UnpackingAssembling and Attaching Brass Trim Attaching Brass Front Trim to Front PanelProviding Adequate Ventilation AIR for Combustion and 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 From Outdoors Ventilation AIRVentilation Air From Inside Building Installation Items InstallationCheck GAS Type Locating HeaterMounting Heater to Wall Installation OptionsThermostat Sensing Bulb Placing Heater On Mounting Bracket Installing Bottom Mounting ScrewsSecuring Hearth Base to Floor Mounting Heater on Optional Hearth BaseMounting Heater to Optional Hearth Base Assembling Mantel Connecting to GAS SupplyMounting Heater to Optional Mantel Checking GAS Connections Pressure Testing Gas Supply Piping SystemPressure Testing Heater Gas Connections Operating Heater For Your Safety Read Before LightingLighting Instructions To Turn OFF GAS To ApplianceBurner Flame Pattern Inspecting BurnerPilot Flame Pattern Observed Problem Possible Cause Remedy TroubleshootingMaintenance, Gas leak. See Warning statement at Service Hints Cleaning and MaintenanceReplacement Parts VMH3000TNA Illustrated Parts BreakdownKEY VMH3000TNA Description QTY Parts ListTechnical Service SpecificationsAccessories International Warranty Information

VMH3000TNA specifications

The Desa VMH3000TNA is an advanced heating unit designed for residential and commercial use, providing a reliable source of warmth during colder months. This versatile heater offers a blend of efficiency, modern technology, and user-friendly features, making it a popular choice for consumers seeking comfort and practicality.

One of the standout features of the VMH3000TNA is its high heat output capability. With an impressive heating output of up to 30,000 BTUs, this heater can efficiently warm large spaces, ensuring that any room or area is kept at a comfortable temperature. This makes it an ideal choice for homes, workshops, and even smaller commercial settings.

In terms of technology, the Desa VMH3000TNA is equipped with a reliable electronic ignition system, which eliminates the need for manual lighting and improves overall convenience. This feature is especially beneficial during cold weather, as it ensures quick and effortless operation. Additionally, the heater includes adjustable thermostatic controls, allowing users to set their desired temperature and maintain it with precision.

The heating unit operates using either natural gas or propane, providing flexibility depending on the availability of fuel sources. This adaptability is particularly advantageous for users in remote areas where one fuel type may be more accessible than the other. Furthermore, the VMH3000TNA boasts an energy-efficient design, which helps to reduce operational costs while minimizing environmental impact.

Safety is a critical aspect of the Desa VMH3000TNA's design. It incorporates an automatic shut-off feature, which activates in the event of a malfunction or airflow blockage. This ensures user safety and peace of mind, making it suitable for use in various settings, from homes to commercial spaces. Moreover, the heater is equipped with a durable casing and high-quality components, ensuring longevity and reliability.

Another notable characteristic of this unit is its sleek and contemporary design. The VMH3000TNA features a stylish appearance that can seamlessly fit into a range of interior decors, making it not just a functional appliance but also an aesthetic addition to any room.

In summary, the Desa VMH3000TNA stands out as a powerful, efficient, and user-friendly heating solution. With its high output, modern technologies, versatile fuel options, and safety features, it provides an excellent choice for those seeking dependable heating for their spaces. Whether for a home or a commercial setting, this heater promises to deliver warmth and comfort throughout the cold seasons.
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