Assembly Of Bases; Assembly Of Sections And Draft Hoods - Dunkirk D247 Installation Instructions Manual

ASSEMBLY OF BASES
The 300, 400 and 500 boilers are the basic models. The
300 model has (6) burners, the 400 model has (8) burners
and the 500 model has (10) burners. Combinations of the
basic models are used to assemble the 600 through 3000
models. See Chart No. 2 for the proper order of assembly
When two or more bases are used to assemble the boiler,
be sure the top angles of the bases are even. (See Figure
No. 6). The bases are fastened together with 5/16 cap
screws and nuts. Insert two screws in the front posts and
two in the rear posts as shown in Figure No. 1. After bases
are fastened together, install the base end panels. These
end panels must be installed before assembling sections.
Important: After bases are assembled check to be sure
they are level.
STARTING SECTION ASSEMBLY
The sections may be started from either the left or right
end of the base. Place the end section on the base with
the parting line of the section directly over the joint of the
base and base end closure. With boilers having two or more
bases, as you progress be sure the parting line (center-line
of section) of the intermediate sections falt on the junction
of the two bases. Install a top cover support bracket on the
draw bolts of the intermediate sections at each base
junction.
PULLING SECTIONS TOGETHER
WITH TIE RODS
Before beginning, clean nipples and nipple ports. Coat
nipples and nipple ports with pipe joint compound furnished
or other good sealant and keep them clean. Place nipples
in ports taking care to seat them squarely to prevent
cocking. (See Figure 2). When pulling sections together
with tie rods, always insert tie rods in holes nearest to
nipple ports. Move tie rods to proper location, if necessary,
only after sections are fully pulled together. Oil or lubricate
threads, insert tie rods in lugs with washers under nuts
and tighten uniformly and evenly so that sections are pulled
END CLOSING
parallel as they go together. When all sections are pulled
up locate the tie rods in alternating pairs of upper and lower
holes between adjacent sections, and back off nuts so that
they are only finger tight. (See Figure 7). Be sure both
ends of completed section assembly are resting evenly on
both ends of base.
Apply boiler putty at the joints of the sections front, top and
back. Putty should also be applied where the sections join
the base.
Place the necessary plugs and control wells in the correct
locations. Plug alt other tappings, leaving an air vent in the
top of one of the end sections, and connect water. Fitl the
boiler with water until it runs out the air vent. Then
hydrostatically test the boiler in accordance with applicable
codes. Check for leaks before continuing with the assembly
Drain and remove unnecessary plugs.
TIE
TOP COVER SUPPI]RT _
FIGURE 2
TOP ANGLE
CAP
SCREWS
AND NUTS
FIGURE 1
BASE ASSEHBLIES
7
BURNERS