Desa Comfort Glow CGR30PT Owner's Operation And Installation Manual page 7

AIR
FOR
COMBUSTION
AND
VENTILATION
Continued
WARNING
If the area in which the heater may be operated is smaller
than that defined as an unconfined space, provide
adequate combustion and ventilation air by one of the
methods described in the National Fuel Gas Code, ANSI
Z223.1, 1992 Section 5.3
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconfined space. When ventilating to an
adjoining uncon fined space, you must prbvide two permanent openings: one _¢ithin 12" of the
ceiling and one within 12" of the floor on the wall connecting the two spaces (see options l and
2, Figure 2). You can also remove door into adjoining room (see option 3, Figure 2).
Follow the National Fuel Gas Code, NFPA 54/ANSI Z223.1, Section 5.3, "Air
for Combustion and Ventilation" for required size of ventilation grills or ducts.
• WARNING
Rework worksheet, adding thespace of the adjoining unconfined
space. The combined spaces must have enough fresh air to supply all
appliances in both spaces.
Ventilation
Grills
into Adjoining
Room,
Option 1
\
A
12" 1
/
Ventilation Grills
Into Adjoining Room,
Option 2
/
Figure 2 - Ventilation Air from Inside Building
Continued