Allen + Roth ARSTDF26I Manual page 10

WARNING
methods described in the NATIONAL FUEL GAS CODE, ANS Z223.1/NFPA 54, the INTERNATIONAL FUEL GAS
CODE, or applicable local codes.
VENTILATION AIR FROM INSIDE A BUILDING
Fresh air comes from a connected unconfined space.
You must provide two permanent openings when
ventilating to a connected unconfined space, one of
which that's within 12" of the wall that connects the
two spaces (see options 1 and 2, Fig. 1). You may also
remove the door into the adjoining room (see option 3,
Fig. 1). Follow the National Fuel Gas Code NFPA 54/ANS
Z223.1 for the required size of ventilation grills or ducts.
VENTILATION AIR FROM OUTDOORS
Extra fresh air is provided via ventilation grills or
ducts. You must provide two permanent openings:
one within 12" of the ceiling and one within 12" of the
floor (see Fig. 2). They must connect directly to the
outdoors or spaces that open to the outdoors. Such
spaces may include attics or crawl spaces. Follow the
National Fuel Gas Code NFPA 54/ANS Z223.1 for the
required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet or
outlet air into an attic if the attic has a thermostat-
controlled power vent. The power vent will be
activated by heated air that enters the attic. You must
add the space of the connected unconfined space
and rework the information on page 9. The combined
spaces must have enough fresh air to supply all
appliances in both spaces.
Preparing for Installation (cont.)
If the area in where the heater operates does not meet the required volume for
indoor combustion air, you must provide combustion and ventilation air by one of the
Fig. 1—Ventilation Air from Inside a Building
Ventilation Grills
Ventilation Grills
Into adjoining Room
Into adjoining Room
Option 2
Option 2
Fig. 2—Ventilation Air from Outdoors
To
Attic
To
Attic
To
Crawl
To
Space
Crawl
Space
Ventilated
Crawl Space
Ventilated
Crawl Space
10 Vent-Free Gas Stove User's Manual
12 in.
12 in.
Or
Or
Ventilation
Remove
Remove
Door
Door
Into Adjoining
Into
Into Adjoining
Into
Adjoining
Adjoining
Room
Room
Option 3
Option 3
Ventilated
Outlet
Ventilated
Attic
Outlet
Air
Attic
Air
Inlet Air
Inlet Air
Ventilation
Grills
Grills
Room
Room
Option 1
Option 1
Outlet
Air
Outlet
Air
Inlet
Air
Inlet
Air