Assembling The Block - Weil-McLain 88 Manual

Weil-McLain 88 Water and steam boilers — Series 2 —

Assembling the block

Sections are top heavy. Unbolted sections may fall
if not supported, resulting in severe personal injury
or death.
Prepare and position back section
1. Apply 1 / " continuous bead of sealing rope adhesive in sealing rope
8
Do not get any adhesive on machined
grooves. See Figure 6.
port surfaces
.
2. Place ½" sealing rope in groove. Around curves, grasp at 1" intervals
and push together. Do not stretch.
Do not pre-cut rope. Gas tight seal must be maintained
to prevent possibility of flue gas leakage and carbon
monoxide emissions, causing severe personal injury or
death. Cut rope as each section is completed.
3. Remove any grit from port machined surfaces with clean rag.
Do not use petroleum-based cleaning or sealing com-
pounds in boiler system. Severe damage to system
components can result, causing substantial property
damage.
4. Place 9" and 6" sealing rings in appropriate port openings. See
Figure 6. If sealing ring slips out of groove, stretch ring gently for
several seconds, then reposition in groove.
5. Apply continuous bead of silicone sealant no larger than
around entire outside edge of
Do not apply silicone sealant on, next to or
Refer to Figure 7.
under sealing ring
.
Silicone sealant applied as specified above prevents un-
burned oil vapors from coming in contact with sealing
ring. Vapor contact can damage rings, resulting in severe
damage to boiler and substantial property damage.
6. Hoist back section upright. Then temporarily screw a 6-inch
threaded pipe at least 36 inches long into the lower (return) tap-
ping.
7. Hoist the section and put into position.
8. Place a block under the 6-inch pipe to hold the back section up-
right and plumb.
The back section must be plumb before installing other
sections to ensure the block will assemble correctly.
9. The 6-inch support pipe and block can be removed after several
sections have been installed, and the assembly is stable.
10. Install intermediate sections as described on the following page.
8
outer
machined surface of port.
for Gas, Light Oil, & Gas/Light Oil-Fired Burners
Figure 6
Sealing rope installation
1 / "
Figure 7
Silicone sealant
16
Part No. 550-100-068/1009