Fiberglass wool and ceramic fiber materials are
possible cancer hazards. See warning on page 37.
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 5, page 13):
•
Loosen two screws holding flue cap strap
to collector hood. Remove strap and flue cap from
opening. Re-tighten screws.
•
C h e c k ro p e p l a c e m e n t i n s i d e f l u e c a p.
(Read
under step #3 at right).
•
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 5):
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 w rench at washer/nut end, unifor mly
tighten nuts starting with 5½" rod at large port, 5½" rod
at small port, bottom long rod and finally top long rod.
a. 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.
b. Metal-to-metal contact should be made around port
openings. If gap does exist, it should be less than .020".
Check with feeler gauge.
c. 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 continu-
ing installation.
3. Non-Packaged SGO-7, 8 & 9 — install flue collector hood
(see Figure 5):
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 5.
d. Install washers and nuts. Tighten nuts until collector hood
makes contact with tinnerman clip.
e. Position flue cap
•
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 remain-
ing screws in holes in flue collector hood.
4. Check level. Shim legs, if needed.
Tankless heater, if used
1. SGO-3 through 6 — remove knockout in left side jacket
panel, and for SGO-6 only, remove tankless heater control
knockout.
2. Remove tankless heater cover plate and gasket.
3. Install new gasket and tankless heater over studs around
opening. Secure with 3/8" nuts.
Install boiler — non-packaged boilers only
Part number 550-141-829/1211
12
GOLD
SGO
OIL-FIRED NATURAL DRAFT STEAM BOILER — SERIES 3 —
Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
