AIR FOR COMBUSTION AND VENTILATION

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WARNING

WARNING ICON

G 001

This heater shall not be installed in a confined space unless provisions are provided for adequate combustion 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 efficient, 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 is excerpts from National Fuel Gas Code. NFPA 54/ANSI Z223.1, Section 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 6 through 9 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 construction where:

a.walls and ceilings exposed to the outside atmosphere have a continu- ous water vapor retarder with a rating of one perm (10-6per-pa-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 addi- tional fresh air. See Ventilation Air From Outdoors, page 9.

If your home does not meet all of the three criteria above, proceed to page 7.

Confined and Unconfined Space

The National Fuel Gas Code (ANSIZ223.1, 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 unconfining 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 consid- ered a part of the unconfined space.

*Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them.

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Desa VMH10TP AIR for Combustion and Ventilation, Providing Adequate Ventilation, Unusually Tight Construction
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VMH10TP specifications

Desa VMH10TP is an innovative and versatile heating solution that stands out in the HVAC market. Designed with efficiency and user-friendliness in mind, this model caters to various heating needs in both residential and commercial settings. Its cutting-edge technology ensures that spaces are warmed quickly while minimizing energy consumption.

One of the main features of the Desa VMH10TP is its powerful heating capacity. The unit is equipped with a robust heating element that provides a remarkable output, making it suitable for larger rooms or open areas. Users can enjoy a comfortable ambient temperature, even during the harshest winter months. This model also includes adjustable heat settings, allowing users to easily customize their heating preferences according to specific needs or time of the day.

Incorporating advanced digital control systems, the Desa VMH10TP offers convenient programming options. Users can set timers, adjust temperature settings, and manage the unit remotely through integrated smart technologies. This feature not only enhances comfort but also promotes energy efficiency, as users can heat spaces just before arriving home or turn off the heater when not needed. The intuitive display makes it easy to navigate through various settings, catering to both tech-savvy individuals and those who prefer traditional operation.

Safety is another key characteristic of the Desa VMH10TP. The unit is designed with multiple safety features, including overheat protection, tip-over switch, and a cool-touch exterior. These safety measures ensure that both users and their spaces remain secure while the heater is in operation. The sleek design and compact size also make it easy to position the heater in various locations without sacrificing space.

Furthermore, the Desa VMH10TP is built with durability in mind. High-quality materials and construction standards ensure that the unit can withstand regular use over the years. With proper maintenance, users can expect a long lifespan, making this investment worthwhile.

In summary, the Desa VMH10TP is a stylish and effective heating solution that combines powerful performance with modern technology. Its customizable settings, safety features, and robust design make it an ideal choice for those seeking a reliable way to maintain comfort during cold seasons.
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