Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners

Assembling the block

Sections are top heavy. Unbolted sections may fall if not supported, resulting in severe personal injury or death.

Prepare and position back section

1.Apply 1/8" continuous bead of sealing rope adhesive in sealing rope grooves. See Figure 6. Do not get any adhesive on machined port surfaces.

2.Place ½" sealing rope in groove. Around curves, grasp at 1" intervals and push together. Do not stretch.

Do not pre-cut rope. Gas tight seal must be maintained to prevent possibility of flue gas leakage and carbon monoxide emissions, causing severe personal injury or death. Cut rope as each section is completed.

3. Remove any grit from port machined surfaces with clean rag.

Do not use petroleum-based cleaning or sealing com- pounds in boiler system. Severe damage to system components can result, causing substantial property damage.

4.Place 9" and 6" sealing rings in appropriate port openings. See Figure 6. If sealing ring slips out of groove, stretch ring gently for several seconds, then reposition in groove.

5.Apply continuous bead of silicone sealant no larger than 1/16" around entire outside edge of outer machined surface of port. Refer to Figure 7. Do not apply silicone sealant on, next to or under sealing ring.

Silicone sealant applied as specified above prevents un- burned oil vapors from coming in contact with sealing ring. Vapor contact can damage rings, resulting in severe damage to boiler and substantial property damage.

6.Hoist back section upright. Then temporarily screw a 6-inch threaded pipe at least 36 inches long into the lower (return) tap- ping.

7.Hoist the section and put into position.

8.Place a block under the 6-inch pipe to hold the back section up- right and plumb.

The back section must be plumb before installing other sections to ensure the block will assemble correctly.

9.The 6-inch support pipe and block can be removed after several sections have been installed, and the assembly is stable.

10.Install intermediate sections as described on the following page.

8

Figure 6 Sealing rope installation

Figure 7 Silicone sealant

Part No. 550-100-068/0308

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Weil-McLain 88 manual Assembling the block, Prepare and position back section
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88 specifications

The Weil-McLain 88 series is a commercial cast iron boiler recognized for its durability, efficiency, and versatile design, making it a preferred choice for various heating applications. Designed primarily for commercial and industrial use, the Weil-McLain 88 combines advanced technology with proven engineering principles to deliver reliable performance and long-lasting service.

One of the standout features of the Weil-McLain 88 is its cast iron construction. Cast iron is renowned for its ability to retain heat, resulting in lower fuel consumption and more consistent heating. This robust material ensures that the boiler can withstand high temperatures and pressures, making it suitable for heavy-duty applications. The sectional design of the boiler allows for easy installation and maintenance, enabling quick access to components and minimizing downtime.

In terms of efficiency, the Weil-McLain 88 is designed to achieve high thermal efficiency ratings. The boiler employs a flue gas recirculation system, which significantly reduces heat loss and maximizes energy utilization. Additionally, its low water content provides rapid heating response times, ensuring that spaces are heated promptly, even during peak demand periods.

Another noteworthy characteristic of the Weil-McLain 88 is its versatility. The boiler can be configured for a variety of applications, including hot water heating, hydronic heating systems, and steam heating. It is compatible with multiple fuel types, including natural gas, propane, and various oil options, allowing for flexibility in fuel choice based on availability and pricing.

The Weil-McLain 88 also incorporates advanced control technologies that enhance operational efficiency. The integrated electronic controls feature diagnostic capabilities to streamline troubleshooting and maintenance, ensuring optimal performance throughout the boiler’s lifespan. Moreover, the boiler's design is compatible with modern building management systems, allowing for seamless integration into existing heating setups.

Overall, the Weil-McLain 88 series stands out for its combination of quality construction, efficient operation, and adaptability to different heating needs. Whether for a commercial building, industrial facility, or institutional application, the Weil-McLain 88 provides a reliable and efficient heating solution that meets the demands of the modern world.
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