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5. For boiler located in an unconfined space in a
building of other than unusually tight construc-
tion, adequate combustion and ventilation air
is normally provided by fresh air infiltration
through cracks around windows and doors.
6. For boiler located within unconfined space in
building of unusually tight construction, or
within equate confined space, provide outdoor
air through two permanent openings which
communicate directly or by duct with the
outdoors or spaces (crawl or attic) freely commu-
nicating with the outdoors. Locate one opening
within twelve (12) inches of top of space. Locate
remaining opening within twelve (12) inches of
bottom of space. Minimum dimension of air
opening is three (3) inches. Size each opening
per following:
a. Direct communication with outdoors. Minimum
free area of one (1) square inch per 4,000 Btu per
hour input of all equipment in space.
b. Vertical ducts. Minimum free area of one (1)
square inch per 4,000 Btu per hour input of all
equipment in space. Duct cross-sectional area
shall be same as opening free area.
c. Horizontal ducts. Minimum free area of one (1)
square inch per 2,000 Btu per hour input of all
equipment in space. Duct cross-sectional area
shall be same as opening free area.
Avoid operating this boiler in an environment where saw dust, loose insulation fibers, dry wall
dust, etc. are present. If boiler is operated under these conditions, the burner interior and ports
must be cleaned and inspected daily to insure proper operation.
II. Unpack Boiler
CAUTION
Do not drop boiler. Do not bump boiler
jacket against the floor.
A.
Move boiler to approximate installed position.
B.
Remove all crate fasteners.
C.
Lift and remove outside container. Save two of the
wooden slats from the container sleeve for use in Steps
E and F.
D.
Remove all boiler hold-down fasteners.
Alternate method for boiler located within
confined space. Use indoor air if two permanent
openings communicate directly with additional
space(s) of sufficient volume such that combined
volume of all spaces meet criteria for unconfined
space. Size each opening for minimum free area
of one (1) square inch per 1,000 Btu per hour
input of all equipment in spaces, but not less than
100 square inches.
7. Combustion Air/Ventilation Duct Louvers and
Grilles. Equip outside openings with louvers to
prevent entrance of rain and snow, and screens to
prevent entrance of insects and rodents. Louvers and
grilles must be fixed in open position or interlocked
with equipment to open automatically before burner
operation. Screens must not be smaller than ¼ inch
mesh.
Consider the blocking effect of louvers, grilles and
screens when calculating the opening size to provide
the required free area. If free area of louver or grille
is not known, assume wood louvers have 20-25
percent free area and metal louvers and grilles have
60-75 percent free area.
CAUTION
Installation of this boiler should be under-
taken only by trained and skilled personnel
from a qualified service agency.
E.
Tilt the boiler to its front side or back side and slide a
wooden slat under the raised feet.
F.
Tilt the boiler in the opposite direction and slide another
wooden slat under the raised feet.
G.
Slide the boiler left or right off the skid using the two
wooden slats as runners.
H.
Move boiler to its permanent location.
WARNING
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