Weil-McLain 550-141-829/1201 - Manual (Page 8)

Place boiler:
1. Non-Packaged SGO-3 through 6 — position on site.
Smaller sized boilers may be
top heavy. Use caution when
handling to avoid minor personal injury or
property damage.
a. Boiler is shipped for back flue outlet. To
change to top flue outlet (see FIGURE 3):
1) Loosen two screws holding flue cap strap
to collector hood. Remove strap and flue
cap from opening. Re-tighten screws.
2) Check rope placement inside flue cap.
(Read under step #3 at right).
3) Loosen two screws on back flue outlet.
Set flue cap on outlet. Install strap by
engaging slots in screws. Tighten screws.
Make sure cap is securely installed.
2. Non-Packaged SGO-7, 8 & 9 — split the
assembled block for easier handling (see
FIGURE 3):
a. Open burner mounting door and using
utility knife, slit floor insulation at joint to
be separated.
b. Remove 5½" draw rod and the longest draw
rod from each side. Pull block apart. Save
draw rods, nuts, washers and sealing rings
for reassembly.
c. Move divided block to location.
d. Clean port openings with clean rag.
Do not use petroleum-based
compounds to clean
openings. Damage to system components
can result causing property damage.
e. Place rings in port openings. If ring slips
out of groove, stretch ring gently for several
seconds, then place in groove.
f. Position sections so aligning lugs fit into
sockets of next section. Make sure sealing
rope is in good condition and in position.
g. Oil threads on draw rods. Install
washer and nut on end to be tightened.
Use nut only on other end.
h. With wrench at washer/nut end, uniformly
tighten nuts starting with 5½" rod at large port,
5½" rod at small port, bottom long rod and
finally top long rod.
i. Torque on both 5½" rods and bottom long
rod should be 50-60 ft. lbs; long top rod
should be 20-25 ft. lbs. Do not
back-off nuts.
j. Metal-to-metal contact should be made
around port openings. If gap does exist, it
should be less than .020". Check with
feeler gauge.
k. If gap around port openings exceeds .020",
check for dirt on port openings, sockets or
misaligned lugs. If corrections are made
and gap still exists, contact your Weil-
McLain distributor or sales office before
continuing installation.
3. Non-Packaged SGO-7, 8 & 9 — install flue
collector hood (see FIGURE 3):
Obtain gas-tight seal to prevent
possible flue gas leakage and
carbon monoxide emissions, leading to severe
personal injury or death.
a. Thread tinnerman clip on screw so that clip
fits snugly in notch of hold-down lug. Screw
must not turn.
b. Remove paper on sealing rope. Starting at
back section near flue collar, position sealing
rope around top of block with adhesive side
to sections. Do not stretch rope. Make sure
rope ends meet. Trim excess rope.
c. Position flue collector hood on top of boiler
sections and over screws and clips as
shown in FIGURE 3.
d. Install washers and nuts. Tighten nuts
until collector hood makes contact with
tinnerman clip.
e. Back flue outlet boiler — Position flue cap
and strap over opening in flue collector
hood. Make sure rope in cap is in place
and in good condition. Tighten strap to
hood with screws provided.
Top flue outlet boiler — Position flue cap
and strap over opening in back section.
Make sure rope in cap is in place and in
good condition. Tighten strap to boiler with
screws provided in section. Install remaining
screws in holes in flue collector hood.
4. Check level. Shim legs, if needed.
8
Install Non-Packaged Boiler
CONTINUED