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

Page 7

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

 

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Contents This Manual Includes Installation Start-Up Boiler Parts Hazard Definitions Symbol DefinitionsWhen Calling or Writing About the Boiler Read This Page FirstTable of Contents Provide clearances around boiler see Figure Before Installing BoilerInstallations must comply with Before selecting boiler locationBoiler Foundation Size Table Do not install exhaust fan in boiler roomProvide air for combustion and ventilation Lay a foundation, if neededFiberglass wool and ceramic fiber materials Install Non-Packaged BoilerPlace boiler Perform hydrostatic pressure test Tankless heater, if usedInstall boiler controls Install jacket sizes 7 through 9 onlyControl Tapping Table Install burner also refer to instructions packed with burner General chimney requirements Connect BreechingMinimum Chimney Size Table Connect Breeching Diaphragm expansion tank Figure Install pipingConnect Water Piping General piping informationExpansion Tank Zoning with circulators Piping Multiple ZonesZoning with zone valves Connect Water Piping Use with refrigeration systems Connect Tankless Heater PipingHot Water Can Scald Tankless Heater Ratings Table To pipe tankless heaterBurner wiring Connect WiringGeneral wiring requirements Thermostat wiringConnect Wiring General oil piping requirements Connect Oil PipingOil piping connection at burner To place in operation Start-UpFill the system Tips for water systemsCheck off steps as completed Check-Out ProcedureAppendix Burner adjustments for a boilersDescription Parts ListParts Drawing Dimensions DimensionsIntermediate SGO-W Gold OIL Water Boiler Ratings Ratings

SGO-W SERIES 3 OIL-FIRED NATURAL DRAFT WATER BOILER, 550-141-827/1201 specifications

The Weil-McLain SGO-W Series 3 Oil-Fired Natural Draft Water Boiler is a robust and efficient solution designed for residential heating needs. This boiler stands out for its exceptional construction and advanced engineering, ensuring reliability and longevity for homeowners.

One of the core features of the SGO-W Series 3 is its cast iron heat exchanger, which provides excellent thermal efficiency. The boiler is designed to retain heat for extended periods, allowing for reduced energy consumption and lower heating bills. The heavy-duty cast iron sections are built to withstand high pressures and temperatures, ensuring durability in various conditions.

The SGO-W Series 3 is equipped with a natural draft design, allowing it to utilize the natural upwards movement of flue gases. This design eliminates the need for complicated power venting systems, making installation simpler and more cost-effective. It also enhances the boiler's efficiency by promoting better combustion processes in the burner.

Another significant characteristic is its versatile fuel options. The SGO-W Series 3 accommodates No. 2 fuel oil, making it a viable option for users who prefer or require oil heating. This versatility is crucial for homeowners in areas where natural gas is not available or preferred.

The boiler operates at a high efficiency rate, contributing to lower emissions and compliance with environmental standards. Its energy-efficient design not only benefits the environment but also allows for significant savings over time. The unit is also equipped with a reliable and easily adjustable fuel burner, providing flexibility in managing heating output to suit various residential heating demands.

For safety and convenience, the Weil-McLain SGO-W Series 3 features an electronic ignition system that ensures reliable starting and operation, even in adverse weather conditions. Additionally, the boiler is designed for easy serviceability, with accessible components allowing for quick maintenance and repairs, ensuring that homeowners can rely on continual performance and minimal downtime.

In summary, the Weil-McLain SGO-W Series 3 Oil-Fired Natural Draft Water Boiler is a powerful and efficient heating solution, combining advanced technologies with robust construction. Its cast iron heat exchanger, natural draft design, fuel flexibility, high efficiency, and convenient features make it an excellent choice for residential heating applications, supporting homeowners' comfort and reducing energy costs.