Weil-McLain 88 - Manual (Page 8)

Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners
8 Part No. 550-100-068/1009
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
Apply 1. 1 /
8
" continuous bead of sealing rope adhesive in sealing rope
grooves. See Figure 6. $O
PORT .
Place ½" sealing rope in groove. Around curves, grasp at 1" intervals 2.
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.
Remove any grit from port machined surfaces with clean rag. 3.
Do not use petroleum-based cleaning or sealing com-
pounds in boiler system. Severe damage to system
components can result, causing substantial property
damage.
Place 9" and 6" sealing rings in appropriate port openings. See 4.
Figure 6. If sealing ring slips out of groove, stretch ring gently for
several seconds, then reposition in groove.
Apply continuous bead of silicone sealant no larger than 5. 1 /
16
"
around entire outside edge of OUTER machined surface of port.
Refer to Figure 7. $O
UNDER .
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.
Hoist back section upright. Then temporarily screw a 6-inch 6.
threaded pipe at least 36 inches long into the lower (return) tap-
ping.
Hoist the section and put into position. 7.
Place a block under the 6-inch pipe to hold the back section up- 8.
right and plumb.
The back section must be plumb before installing other
sections to ensure the block will assemble correctly.
The 6-inch support pipe and block can be removed after several 9.
sections have been installed, and the assembly is stable.
Install intermediate sections as described on the following page. 10.
Sealing rope installation &IGURE
Silicone sealant &IGURE