Boiler manual: • Installation • Start-Up • Maintenance • Parts
9Part No. 550-100-068/0308
Sections are top heavy. Unbolted sections may fall
if not supported, resulting in severe personal injury
or death.
Install intermediate sections
Remove and discard 1.
3
/
8
" diameter shipping tie rods.
Remove grit from port machined surfaces with clean rag.2.
Do not use petroleum-based cleaning or sealing com-
pounds in boiler system. Severe damage to system
components can result, causing substantial property
damage.
Position intermediate section so aligning lugs fit into sockets of 3.
next section. See Figure 8.
Install TI (tankless intermediate) and SI (supply intermediate) 4.
sections (when used) in order shown in Figure 9, page 10.
Draw sections together until metal-to-metal contact is made 5.
around machined port openings (see Figure 8):
Oil threads on 4 draw rods. Install washer and nut on end to a.
be tightened. Use nut only on other end.
Uniformly draw sections together, starting at washer/nut b.
end.
Important — Leave an equal amount of thread on each
end of the draw rod. This is needed to allow securing the
jacket support brackets in place. The draw rods must not
extend past the face of the front or back section, or they
will interfere with the jacket.
Draw rods should be torqued to a range of 90 to 100 ft-lbs. Do c.
not back off draw rods.
Metal-to-metal contact will be achieved around port openings. d.
See Figure 8. If gap occurs, it should be no greater than .032".
Check with feeler gauge.
If, for any reason, gap around machined port opening exceeds e.
.032", check for rope extending from rope grooves, dirt on port
openings or sockets, or misaligned lugs. If corrections are made
and gap still exists, contact your Weil-McLain distributor or
sales office before continuing installation.
Sealing ring installation and port
alignment
Assembling the block
After erecting first intermediate section,
check both sections for plumb. Failure
to plumb sections can cause misaligned
piping and breeching, possibly resulting
in property damage.
Repeat steps 1-5.6.
Check each section for proper sealing rope position 7.
before proceeding to next section.
Failure to position sealing rope properly
can cause boiler to not seal gas-tight.
Gas tight seal prevents possible ue gas
leakage and carbon monoxide emissions,
resulting in severe personal injury or
death.
Install remaining intermediate sections and front 8.
section using the same procedure.
If using tankless heater (TI)
sections
Install tankless heaters and gaskets or heater cover •
plates and gaskets. Use
3
/8" x
3
/4" studs, washers
and nuts.
