Install steam boiler controls

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

Install controls:
	Figure 39 Steam control locations

1. Install controls where shown in Figure 38 and Figure 39.

Failure to properly install, pipe and wire boiler controls can result in severe damage to boiler, building and per- sonnel; and is not covered by boiler warranty.

a.Install steam pressure operating and high limit controls and pressure gauge. See Figure 38, Figure 39 and Figure 40, page 28. Pressure limit control settings:

•Low – set according to design requirements.

•High – set at least 2 psi higher than low limit, 15 psi maxi- mum.

b.Relief valve must be installed with spindle in vertical position. Use fittings provided with boiler. Do not make any other con- nection in that piping.

Pipe relief valve discharge through vertical piping to at- mosphere. Use rigid material suitable for 375°F, threaded one end only. Install drain pan elbow to drain condensate. Pipe near floor close to floor drain to eliminate potential of severe burns. Do not pipe to any area where freezing could occur. Do not plug, valve or place any obstruction in discharge line.

c.Install water level controls and gauge glass per Figure 38, Figure 39 and Figure 42, page 28.

•Fittings for controls to be furnished by others.

•If water level control is not shown in Figure 41, page 28, locate casting mark on control and install per manufac- turer's instructions.

Do not use water level controls with quick hook-up fit- tings. Nuisance shutdowns will occur.

Figure 38 Steam control tappings (see Figure 39)

Location Size Function

A2" Steam relief valve and/or Skim tapping

B2" Steam relief valve

	L	1"	Secondary probe low water cut-off

C1	& C2	1"	Low water cut-offs (see Figure 42, page 28)

C1			—

D1	& D2	1"	Alternate low water cut-offs (see	Figure 42, page 28)

E1	& E2	½"	Gauge glass

F1	& F2	C\,"	Try cock tappings

	G	¾"	Pressure limit control,
			Pressure operating control and pressure gauge,
			Firing rate pressure control (when used)

	H	¾"	Boiler drain (see Figure 17, page page 15, for system
			blow-off (drain) valve locations and sizes

	K	1"	—

Part No. 550-100-068/0308				27

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.