Weil-McLain 80 manual Assemble block continued, Install intermediate sections

• Installation • Start-Up • Maintenance • Parts

3 Assemble block (continued)

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.

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.

Figure 6 Sealing ring installation and port alignment

Table 3 Section arrangement

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.

Prepare remaining sections

1. Follow “Prepare intermediate section” for remaining intermediate and front	If using tankless heater (TI) sections
sections:	1. Install tankless heaters and gaskets or heater cover plates
a. Remove any grit from threads inside tapped holes with clean rag.	and gaskets. Use 3/8" x 3/4" studs, washers and nuts.
Part No. 550-141-935/0602	7