Weil-McLain 88 - Complete Block Assembly Steps; Installing Burner Mounting Plate; Installing Observation Ports; Inserting HXT-Bars

Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners
12 Part No. 550-100-068/1009
Insert HXT-bars through cleanout openings as shown below (omit the bottom, blue-tipped, HXT-bar in the opening &IGURE
between the front section and the first intermediate section)
Complete block assembly
Install burner mounting plate on front
section
Install four ½" x 3½" studs to secure burner mounting plate to 1.
section:
Thread and lock together two nuts on rounded end of stud. a.
Thread flat end of stud into one of four holes located around
opening.
Remove nuts.b.
Repeat steps a and b for remaining studs.c.
Install burner mounting plate:2.
Apply a.
1
/
8
" continuous bead of sealing rope adhesive in groove
around opening in section.
Position ½" sealing rope in groove. Overlap ends at least one b.
inch.
Install burner mounting plate with part number and the word, c.
"
50" positioned at top. Use ½" washers and nuts.
Install observation port assemblies on front
and back sections
Install front observation port assembly:1.
Apply a.
1
/
8
" continuous bead of sealing rope adhesive in groove
on observation port.
Position b.
3
/
8
" sealing rope in groove.
Secure assembly to section. Use 10-32 x ¾" c.
truss-head screws.
Repeat above steps for back observation port as-2.
sembly.
Insert HXT-bars
See 1. Figure 12, page 12.
Flue HXT-bars are identified by painted ends. They 2.
must be inserted as shown, with the HXT-bars in
the sequence:
4OPs position
REDs -tipped, HXT-bar 24 inches long —
place on the top row of pins.
-IDDLEs position
WHITEs -tipped HXT-bar, 26 inches long —
place on the first row of pins below the top
clean-out plate boss.
"OTTOMs position
BLUEs -tipped HXT-bar, 34 inches long —
place on the first row of pins below the
bottom cleanout plate boss.