Table of Contents
Advertisement
DESA INTERNATIONAL
UNVENTED PROPANE/LP GAS FIREPLACE
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 3). You can also
remove door into adjoining room (see op-
tion 3, Figure 3). 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
thermostat-controlled power vent. Heated air
entering the attic will activate the power vent.
Ventilation
Grills
Into Adjoining
Or
Room,
Remove
Option 1
Door into
Adjoining
Room,
Option
3
Figure 3 - Ventilation Air from Inside Building
Outlet
Air
Outlet
Air
Inlet
Air
Inlet Air
Figure 4 - Ventilation Air from Outdoors
6
12"
Ventilation Grills
QQQQ
Into Adjoining Room,
Option 2
QQQQ
QQQQ
QQQQQ
QQQQ
QQQQQ
12"
Ventilated
Attic
To Attic
QQQQQQ
QQQQQQ
QQQQQQ
QQQQQQ
Crawl
QQQQQQ
Space
QQQQQQ
QQQQQQ
Ventilated
Crawl Space
QQ QQ
To
104353
Advertisement
Table of Contents
