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126709-01_C
9
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining
unconfined space. When ventilating to an
adjoining unconfi ned space, you must provide
two permanent openings: one within 12" of the
ceiling and one within 12" of the fl oor on the
wall connecting the two spaces
(see options 1
and 2, Figure 3)
. You can also remove door into
adjoining room
(see option 3, Figure 3).
Follow
the
National Fuel Gas Code, ANSI Z223.1/
NFPA 54, Air for Combustion and Ventilation
for required size of ventilation grills or ducts.
AIR FOR COMBUSTION AND VENTILATION
Continued
Figure 4 - Ventilation Air from Outdoors
Figure 3 - Ventilation Air from Inside
Building
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two perma-
nent openings: one within 12" of the ceiling
and one within 12" of the fl oor. 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, 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.
INSTALLATION
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
Outlet
Air
Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air
Ventilated
Crawl Space
To
Crawl
Space
To Attic
WARNING: Never install
fi rebox
• in a bedroom or bathroom*
• in a recreational vehicle
• where curtains, furniture,
clothing, or other fl ammable
objects are less than 36"
from front or 42" from top of
fi rebox; for side clearances
see Figure 5, Page 10
• in high traffi c areas
• in windy or drafty areas
* Unless installed log set is
rated at 10,000 Btu/Hr or less.
WARNING: A qualifi ed ser-
vice person must install fi rebox.
Follow all local codes.
CAUTION: Log heaters in-
stalled in this firebox create
warm air currents. These currents
move heat to wall surfaces next
to fi rebox. Installing fi rebox next
to vinyl or cloth wall coverings or
operating fi rebox where impuri-
ties (such as, but not limited to, to-
bacco smoke, aromatic candles,
cleaning fl uids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls or cause odors.
