Ventilation AIR, Ventilation Air From Outdoors

AIR FOR COMBUSTION

AND VENTILATION

Continued

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: 35,840 Btu/Hr (maximum the space can support)

40,000 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 maxi- mum 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 adjoin- ing room. If the extra space provides an unconﬁned space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air From Inside Building.

B.Vent room directly to the outdoors. See Ventila- tion Air From Outdoors.

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 ﬁreplace may be oper- ated 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/NFPA54 Section 5.3 or applicable local codes.

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining un- conﬁned space. When ventilating to an adjoining unconﬁned space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the ﬂoor on the wall connecting the two spaces (see options 1 and 2, Figure 5). You can also remove door into adjoining room (see option 3, Figure 5). Fol- low the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

		12"
Ventilation		Ventilation Grills
Grills		Ventilation Grills
Into Adjoining	Or	Into Adjoining Room,
Room,	Or	Option 2
Room,	Remove	Option 2
Option 1	Remove
Option 1	Door into
	Door into
	Adjoining
	Room,
	Option
	3

12"

Figure 5 - Ventilation Air from Inside

Building

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the ﬂoor. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces. Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

IMPORTANT: Do not provide openings for inlet or outlet air into attic if attic has a thermostat- controlled power vent. Heated air entering the attic will activate the power vent.

	Outlet	Ventilated
	Outlet	Attic
	Air	Attic
	Air
Outlet
Air		To Attic
		To Attic
		To
		Crawl
Inlet		Space
Inlet
Air
	Inlet Air	Ventilated
	Inlet Air	Crawl Space
		Crawl Space

Figure 6 - Ventilation Air from Outdoors

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111244-01F

CDCFTNA, CDCFPR, CDCFTPA specifications

Desa CDCFTPA, CDCFPR, and CDCFTNA represent a suite of advanced technologies and methodologies employed in the development and management of efficient distribution networks within the field of telecommunications and data services. These frameworks are designed to enhance connectivity, streamline processes, and ensure optimal performance in various environments.

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Each of these frameworks boasts unique characteristics that contribute to the overall enhancement of telecommunications systems. They embody a commitment to innovation, sustainability, and user-centric design, aligning with current trends in digital services and communication technologies. By deploying such advanced systems, service providers can ensure they remain competitive in a fast-paced and continuously evolving market. In summary, Desa CDCFTPA, CDCFPR, and CDCFTNA collectively represent the future of telecommunications infrastructure, promising improved connectivity, efficiency, and adaptability for a diverse range of applications.

Desa CDCFTPA Ventilation AIR, Ventilation Air From Inside Building, Ventilation Air From Outdoors

Models: CDCFTNA CDCFPR CDCFTPA