Astria london lights Handbuch für Installation und Betrieb - Seite 6

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The space in the example is a confined space because the actual Btu/
Hr used is more than the maximum 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 adjoining 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 Ventilation Air From
Outdoors.
C. Install a lower Btu/Hr appliance, 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 appliance may
be operated does not meet the required volume for
indoor combustion air, combustion and ventilation air
shall be provided by one of the methods described in
the National Fuel Gas Code, ANSI Z223.1/NFPA 54, the
International Fuel Gas Code, or applicable local codes.
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 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 2). You can also remove door into adjoining room
(see option 3, Figure 1). Follow the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, 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 permanent openings: one within 12" of the ceiling and
one within 12" of the floor. Connect these items directly to the out-
doors 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.
6
AIR FOR COMBUSTION AND VENTILATION Continued
Astria.US.com
Ventilation
Grills
Into Adjoining
Or
Room,
Remove
Option 1
Door into
Adjoining
Room,
Option
3
12"
Figure 2 - Ventilation Air from Inside Building (Appliance may
differ from actual model)
Outlet
Air
Outlet
Air
Inlet
Air
Inlet Air
Figure 3 - Ventilation Air from Outdoors (Appliance may differ
from actual model)
12"
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilated
Attic
To Attic
To
Crawl
Space
Ventilated
Crawl Space
127331-01A