Weil-McLain SGO-W SERIES 3 OIL-FIRED NATURAL DRAFT WATER BOILER manual Tankless heater, if used

Install Non-Packaged Boiler CONTINUED

3.A-SGO-7, 8 & 9W — install flue collector hood (see FIGURE 2):

Obtain gas-tight seal to prevent possible flue gas leakage and

carbon monoxide emissions, leading to severe personal injury or death.

Tankless heater, if used:

1.SGO-3 through 6W — remove knockout in left side jacket panel.

2.Remove tankless heater cover plate and gasket.

3.Install new gasket and tankless heater over studs around opening. Secure with 3/8" nuts.

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 2.

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.

Perform hydrostatic pressure test:

1.See FIGURE 3 and Control Tapping Table on page 8 to install:

a.Boiler drain.

b.Water pressure gauge (test only). Be sure gauge can handle test pressure.

c.Air vent in upper tapping.

d.Plugs in remaining tappings.

2.Fill boiler. Vent all air. Pressure test boiler at

11¼2 times working pressure. For boilers split and reassembled, test between 75 and 85 psig.

Do not leave boiler unattended. Cold water fill could expand and

damage cast iron, resulting in severe personal injury, death or substantial property damage.

3.Check for maintained gauge pressure for more than 10 minutes. Visually check for leaks if gauge pressure drops.

4.Drain boiler. Repair leaks if found.

Do not use petroleum-based compounds to repair leaks.

Damage to system components can result, causing property damage.

Flue

Nut

Washer

Sealing Rope in

Groove Inside Cap

5. Re-test boiler after repairing leaks.

6. Remove pressure gauge, air vent and plugs from tappings used for controls.

7. Visually check:

		a. Sealing rope placement.
Flue Collector		b. Metal-to-metal contact around port openings.
		c. Flue collector hood seal.
Hood
		d. Burner mounting door seal.
	Sealing Rope with	Obtain gas-tight seal to prevent
	Adhesive Tape
		possible flue gas leakage and
		carbon monoxide emissions, which can lead to
		severe personal injury or death.

Cap

Strap

Flue	Tinnerman Clip
Cap
	Screw

Change from Back Flue Outlet to Top Flue Outlet (Optional)	7
FIGURE 2