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

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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.

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Figure 6 Sealing rope installation

Figure 7 Silicone sealant

Part No. 550-100-068/0308

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Contents Boiler Manual Read before proceeding Read before proceedingHazard Definitions Contents Before installing boiler Installation must comply withBefore selecting boiler location Provide clearance around boilerRequired volume of interior spaces Combustion and ventilation air openingsCombustion air openings to inside Combustion air openings to outsideEngineered Installations Combustion air combination indoor and outdoor openingsLouvers, Grilles, and Screens Mechanical Combustion Air SupplyFor packaged boiler For block assemblySet boiler in place Assembling the block Prepare and position back sectionInstall intermediate sections If using tankless heater TI sectionsNumber Boiler modelSection arrangement Steam boiler Between 45 and 55 psig Perform hydrostatic pressure testPrepare boiler and test Insert HXT-bars Complete block assemblyInstall burner mounting plate on front section Install cleanout plates Install draft hood collarGeneral water piping information Install pipingConnect water boiler piping Piping multiple boilers By-pass circulator sizingConnect steam boiler piping General steam piping informationSteam boiler piping guidelines Drawing legend & notesMinimum height of header above water line must be 24 inches Hartford loop piping for all steam boilersModel 1288 through 1888 steam 3 or 4 risers required Multiple Steam Boiler Piping Gravity Condensate Return Install jacket Before installing jacketInstall support brackets/channels Remove jacket parts from cartonsInstall jacket Install jacket front and back panels Install jacket side panelsInstall jacket top panels Install jacket trimJacket side panel placement Jacket top panel placement Hot water can scald Pipe tankless heatersTo pipe tankless heaters Install water boiler controls Install controlsInstall steam boiler controls Steam control locationsSteam control siphon and fittings Connect breeching and venting systems General venting informationSelect type of venting system Construct metal breechingStub vent forced draft single boiler Install burner & wiring and fill system Gas piping Install fuel pipingFuel oil piping Make final adjustments Adjust burner and damper assemblyFlue gas temperature no lower than 330F Skim steam boilersRemoval of Front Plate or Cleanout Plate Materials Handling ceramic fiber and fiberglass materialsRatings =B=RDimensions Dimensions inches ModelModel Supply & return tappings Burner lengths Dimension F 1788 1888Dimensions see lettered dimensions on opposite Parts Description Part numberParts Warranty Weil-McLain Limited Warranties

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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