Desa VYGF33PRB, VYGF33NRB, FPVF33PRA, FPVF33NRA manual

AIR FOR COMBUSTION AND VENTILATION

Providing Adequate Ventilation Determining Fresh-Air Flow for Heater Location

AIR FOR COMBUSTION AND VENTILATION

Continued

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 following ventilation classifications:

1.Unusually Tight Construction

2.Unconfined Space

3.Confined Space

The information on pages 4 through 6 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 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 Loca- tion, column 2.

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 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: 3,168 cu. ft. (volume of space) x 20 = 63,360 (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	+	33,000	Btu/Hr
Total	=	73,000	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: 63,360 Btu/Hr (maximum the space can support) 73,000 Btu/Hr (actual amount of Btu/Hr used)

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VYGF33PRB, VYGF33NRB, FPVF33PRA, FPVF33NRA, VYGF33NRB, VYGF33PRB specifications

Desa VYGF33NRB, VYGF33PRB, and FPVF33PRA are leading models in the domain of innovative heating solutions, featuring state-of-the-art technology and design aimed at efficiency and performance. These heating units are engineered to cater to a variety of spaces while ensuring user-friendly operation and environmental considerations.

The VYGF33NRB and VYGF33PRB models are distinguished by their advanced radiant heating technology. They utilize infrared heat, which warms objects and surfaces directly rather than simply heating the air. This method proves to be highly efficient, particularly in large or poorly insulated spaces, as it minimizes energy waste and promotes rapid heating.

Both VYGF33NRB and VYGF33PRB models come equipped with adjustable thermostats, allowing users to maintain precise temperature controls according to their specific needs. This feature complements the energy-saving capabilities of these models, ensuring that they only operate when necessary, thereby reducing overall energy consumption. Furthermore, the sleek, modern design of these models makes them an attractive addition to any indoor or outdoor setting.

The FPVF33PRA and FPVF33NRA, on the other hand, focus on versatility and portability. With lighter designs and built-in mobility features, these units can be easily relocated according to the user's requirements. They incorporate integrated safety mechanisms, such as tip-over switches and overheat protection, ensuring that safety remains a priority even in dynamic environments.

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Another noteworthy characteristic is the ease of maintenance that these units offer. Many components are designed for easy access, allowing for routine cleaning and replacement to ensure longevity. These models also feature energy-efficient settings that adapt to environmental conditions, making them suitable for various climates.

In conclusion, the Desa VYGF33NRB, VYGF33PRB, FPVF33PRA, and FPVF33NRA models epitomize the merging of innovative technology with practical utility. Their distinct features such as energy efficiency, advanced heating technology, portability, and air filtration capabilities cater to a wide range of heating needs while promoting a safer, healthier living environment. With these models, users can expect not only comfort but also a commitment to sustainability in their heating solutions.