Complete Block Assembly - Weil-McLain 88 Manual

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

Complete block assembly

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