Weil-McLain 88 manual Multiple Steam Boiler Piping Gravity Condensate Return

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Boiler manual: • Installation • Start-Up • Maintenance • Parts

Connect steam boiler piping (continued)

Figure 26 Multiple Steam Boiler Piping Gravity Condensate Return

See page 18 for numbered circle references.

APipe as shown for gravity return systems, connect- ing point A to the wet gravity return.

•For pumped-return systems, install boiler water level control on each boiler with body mark at level indicated in Figure 42, page 28. Provide at point A either:

•Separate feed pumps and check valves for each

boiler, or . . .

•Single feed pump, with separate solenoid valve for each boiler.

BFor pumped-return systems, install a combination float and thermostatic trap on each boiler to prevent flooding of one boiler while other boiler is firing. Install trap in skim tapping (see Figure 39, page 27). Connect traps to condensate receiver.

Gravity-return systems are self-levelling if the wet returns are piped to the common system wet return.

CInstall boiler piping as shown in the preceding pages of this manual.

Part No. 550-100-068/0308

DInstall stop valves per ASME code requirements.

•For pump-return systems, if using automatic steam valves, use only slow-opening automatic valves. Use a Weil-McLain Boiler Control Sys- tem (such as a BCP panel) to open each steam valve automatically before firing burner.

EConstruct common supply drop header with pipe size at least same size as largest boiler header size.

FUse:

•A Weil-McLain Boiler Control System (such as

a BCP panel) with header-mounted pressure control(s) to sequence boilers, or . . .

•A steam pressure controller.

GInstall drip line in common supply drop header.

•Gravity-return: Pipe drip line to wet return.

•Pumped-return: Use combination float and thermostatic trap and drain to condensate receiver.

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Contents Boiler Manual Hazard Definitions Read before proceedingRead before proceeding Contents Provide clearance around boiler Before installing boilerInstallation must comply with Before selecting boiler locationCombustion air openings to outside Required volume of interior spacesCombustion and ventilation air openings Combustion air openings to insideMechanical Combustion Air Supply Engineered InstallationsCombustion air combination indoor and outdoor openings Louvers, Grilles, and ScreensSet boiler in place For block assemblyFor packaged boiler Prepare and position back section Assembling the blockIf using tankless heater TI sections Install intermediate sectionsSection arrangement Boiler modelNumber Prepare boiler and test Perform hydrostatic pressure testSteam boiler Between 45 and 55 psig Install burner mounting plate on front section Complete block assemblyInsert HXT-bars Install draft hood collar Install cleanout platesConnect water boiler piping Install pipingGeneral water piping information By-pass circulator sizing Piping multiple boilersGeneral steam piping information Connect steam boiler pipingHartford loop piping for all steam boilers Steam boiler piping guidelinesDrawing legend & notes Minimum height of header above water line must be 24 inchesModel 1288 through 1888 steam 3 or 4 risers required Multiple Steam Boiler Piping Gravity Condensate Return Remove jacket parts from cartons Install jacketBefore installing jacket Install support brackets/channelsInstall jacket Install jacket trim Install jacket front and back panelsInstall jacket side panels Install jacket top panelsJacket side panel placement Jacket top panel placement To pipe tankless heaters Pipe tankless heatersHot water can scald Install controls Install water boiler controlsSteam control locations Install steam boiler controlsSteam control siphon and fittings Construct metal breeching Connect breeching and venting systemsGeneral venting information Select type of venting systemStub vent forced draft single boiler Install burner & wiring and fill system Fuel oil piping Install fuel pipingGas piping Skim steam boilers Make final adjustmentsAdjust burner and damper assembly Flue gas temperature no lower than 330FHandling ceramic fiber and fiberglass materials Removal of Front Plate or Cleanout Plate Materials=B=R Ratings1788 1888 DimensionsDimensions inches Model Model Supply & return tappings Burner lengths Dimension FDimensions see lettered dimensions on opposite Description Part number PartsParts Weil-McLain Limited Warranties Warranty

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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