Weil-McLain 80 - Manual (Page 6)

Weil-McLain 80 Boiler For Gas, Light Oil, Gas/Light Oil Fired Burners
6 Part No. 550-141-935/0602
Assemble block
3
Sections are top heavy. Unbolted sections
may fall if not supported, resulting in
severe personal injury or death.
Install back refractory blanket
1. Lay back section on floor with ports face up.
2. Apply adhesive to blanket.
3. Press blanket against back target wall as shown in
Figure 4.
4. Using knife, cut hole through blanket to expose
observation port opening.
Prepare back section
1. Apply 1 /
8
" continuous bead of sealing rope adhesive in
sealing rope grooves. See Figure 4. Do not get any
adhesive on machined 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.
3. Remove any grit from port machined surfaces with
clean rag.
Figure 4 Sealing rope installation Figure 5 Silicone sealant
Do not use petroleum-based cleaning or
sealing compounds in boiler system.
Severe damage to system components can
result, causing substantial property
damage.
4. Place 7½" and 3½" sealing rings in appropriate port
openings. See Figure 4. 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
1 /
16
" around entire outside edge of outer machined
surface of port. Refer to Figure 5. Do not apply
silicone sealant on, next to or under sealing ring
.
Silicone sealant applied as specified above
prevents unburned 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. Position section upright on foundation (if used) and
screw 3" pipe at least 22" long into 3" return tapping.
7. Place a block under pipe to hold section upright.