Weil-McLain 550-141-829/1201 manual Non-Packaged SGO-3 through 6 position on site

Install Non-Packaged Boiler CONTINUED

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-tightenscrews.

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-PackagedSGO-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-PackagedSGO-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.

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