Ventilation AIR, Ventilation Air From Outdoors

OWNER’S MANUAL

AIR FOR COMBUSTION AND VENTILATION

Continued

VENTILATION AIR

Ventilation Air From Inside Building

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 4). You can also remove door into adjoining room (see op-

Ventilation
Grills	Or
into Adjoining	Remove
Room,	Door into
Option 1	Adjoining
	Room,
	Option 3

12"

Ventilation Grills

Into Adjoining Room,

Option 2

tion 3, Figure 4). Follow the National Fuel Gas Code NFPA 54/ANS Z223.1, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

WARNING: Rework work- sheet, adding the space of the adjoining unconfined space. The combined spaces must have enough fresh air to supply all appliances in both spaces.

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.

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

12"

Figure 4 - Ventilation Air from Inside Building Shown with Optional Mantel

Ventilated

Outlet Attic

Air

Outlet
Air	To Attic
	To Attic

Crawl

Space

Inlet

Air

Inlet Air		Ventilated
		Crawl Space
		Crawl Space

Figure 5 - Ventilation Air from Outdoors Shown with Optional Mantel

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CGCF26PRA specifications

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