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7Part No. 550-141-935/0602
Install intermediate sections
Sections are top heavy. Unbolted sections may fall if not
supported, resulting in severe personal injury or death.
1. Remove and discard
3
/
8
" diameter shipping tie rods.
2. Remove grit from port machined surfaces with clean rag.
Do not use petroleum-based cleaning or sealing compounds
in boiler system. Severe damage to system components can
result, causing substantial property damage.
3. Position intermediate section so aligning lugs fit into sockets of next section.
See Figure 6.
4. Install TI (tankless intermediate) and SI (supply intermediate) sections
(when used) in order shown in Table 3.
5. Draw sections together until metal-to-metal contact is made around
machined port openings (see Figure 6):
a. Oil threads on 4 draw rods. Install washer and nut on end to be tightened.
Use nut only on other end.
b. Uniformly draw sections together, starting at washer/nut 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 (see pages 20 and 21).
c. Draw rods should be torqued to a range of 90 to 100 ft. - lbs. Do not
back off draw rods.
d. Metal-to-metal contact will be achieved around port openings. See Figure
6. If gap occurs, it should be no greater than .032". Check with feeler
gauge.
e. If, for any reason, gap around machined port opening exceeds .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.
6.
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.
7. Repeat steps 1-5 from “Prepare back section,” page 6.
Assemble block (continued)3
Figure 6 Sealing ring installation and port alignment
Table 3 Section arrangement
Prepare remaining sections
1. Follow “Prepare intermediate section” for remaining intermediate and front
sections:
a. Remove any grit from threads inside tapped holes with clean rag.
Install bottom refractory blanket on combustion
chamber floor inside section block
1. Unroll blanket only to depth of back section and first intermediate section.
2. Spread adhesive on bottom side of blanket.
3. Press blanket into center bottom of sections.
4. Unroll and install blanket per steps 2 and 3 as each intermediate and front
section are installed.
5. At front section, cut off blanket 2 ½" from burner opening. Discard unused
blanket.
Do not use petroleum-based cleaning or
sealing compounds in boiler system.
Severe damage to system components can
result, causing substantial property
damage.
b. Check each section for proper sealing rope position
before proceeding to next section.
Failure to position sealing rope properly
can cause boiler to not seal gas-tight. Gas
tight seal prevents possible flue gas leakage
and carbon monoxide emissions,
resulting in severe personal injury or
death.
If using tankless heater (TI) sections
1. Install tankless heaters and gaskets or heater cover plates
and gaskets. Use
3
/8" x
3
/4" studs, washers and nuts.