Desa VI33NR Desa International, Unvented Natural Gas Fireplace Insert, Continued, Outlet

DESA INTERNATIONAL

UNVENTED NATURAL GAS FIREPLACE INSERT

AIR FOR COMBUSTION AND VENTILATION

Continued

VENTILATION AIR

Ventilation Air From Inside Building

WARNING: Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be cleaned of soot, creosote, ashes, and loose paint by a quali- fied chimney cleaner.

This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must pro- vide 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 3). You can also remove door into adjoining room (see op-

Ventilation

Grills

Into Adjoining

12"

Ventilation Grills Into Adjoining Room,

tion 3, Figure 3). Follow the National Fuel

Room,

Or

Option 2

Gas Code NFPA 54/ANS Z223.1, Section

Option 1

Remove

5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two per- manent 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 NFPA 54/ANS Z223.1, Section 5.3, Air for Combustion and Ventilation for required size of ventila- tion 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. Any outside air ducts and/or ash dumps in the fireplace shall be permanently closed at the time of appliance installation.

Door into Adjoining Room, Option 3

12"

Figure 3 - Ventilation Air from Inside Building

Ventilated

Outlet Attic

Air

Outlet
Air	To Attic

To

Crawl

Space

Inlet

Air

Inlet Air	Ventilated
	Crawl Space

Figure 4 - Ventilation Air from Outdoors

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