Boiler Manual

3b Water piping — single-zone system

Expansion tank

Diaphragm-type or bladder-type expansion tank — Figure 4

1.Ensure expansion tank size will handle boiler and system water volume and temperature. Tank must be located in boiler return piping as close to boiler as possible, before inlet side of circulator. See tank manufacturer’s instructions for details.

2.Install an automatic air vent in air vent tapping as shown.

Closed-type expansion tank — Figure 5

1.Ensure expansion tank size will handle boiler and system water volume and temperature. See tank manufacturer’s instructions for details.

2.Connect tank to ½" NPT tapping located behind supply outlet, using ½" NPT piping. Pitch any horizontal piping up towards tank 1 inch per 5 feet of piping.

Undersized expansion tanks cause system water to be lost from relief valve and makeup water to be added through fill valve. Eventual section failure can result.

Use Figure 4 or Figure 5 only for single-zone systems designed for return water at least 130 °F. For systems with low return water temperature possible, such as converted gravity systems and radiant heating systems, refer to the special piping suggestions of pages 18-23. Failure to prevent low return water temperature to the boiler could cause corrosion of the boiler sections or burners, resulting in severe personal injury, death or substantial property damage.

Figure 4 Diaphragm- or bladder-type expansion tank

Piping to single-zone system using diaphragm-type or bladder-type expansion tank. See Table 3 for piping sizes.

Cold

From water

system fill

 

To DIAPHRAGM

 

expansion tank

 

and fittings

Isolation

Isolation

valve

valve

 

Relief

To system

valve

Circulator*

 

Automatic air vent

Drain valve

Circulator

 

*Alternate

26010

location

Figure 5 Closed-type expansion tank

Piping to single-zone system using closed- type expansion tank. See Table 3 for piping sizes.

 

 

CLOSED-type

 

 

expansion tank

 

From

Cold water fill

 

system

 

Isolation

 

 

Isolation

 

valve

 

 

valve

 

To system

 

 

Relief

 

 

valve

 

Circulator*

Circulator Drain valve

*Alternate

26011location

Part number 550-110-260/0200

15

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Weil-McLain 550-110-260/02002 manual 3b Water piping single-zone system, Expansion tank, Closed-type expansion tank Figure
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550-110-260/02002 specifications

Weil-McLain is a well-known manufacturer of high-quality heating systems and boiler solutions, and the 550-110-260/02002 model is a testament to the company's commitment to innovation and performance. This particular boiler is designed for commercial and residential applications, providing exceptional heating efficiency and reliability.

One of the standout features of the Weil-McLain 550-110-260/02002 is its robust construction. Built using durable materials, this boiler is engineered to withstand demanding environments while maintaining optimal performance. The unit boasts a high thermal efficiency rating, which translates to lower energy costs and reduced environmental impact. The advanced design ensures that fuel consumption is minimized while delivering consistent heat output.

The Weil-McLain 550-110-260/02002 utilizes a multi-stage burner that enhances combustion efficiency. This feature not only reduces emissions but also improves overall energy use, making it an environmentally friendly choice. The sophisticated control system allows for precise modulation of the burner, ensuring that the boiler operates at peak efficiency under various load conditions.

The boiler is equipped with a user-friendly digital control interface, providing operators with real-time monitoring and diagnostics. This allows for easy adjustments and troubleshooting, which helps to reduce maintenance downtime. The integrated safety features enhance the operational reliability of the unit, ensuring safe operation in any environment.

Another important characteristic of the Weil-McLain 550-110-260/02002 is its adaptability. It can be configured to work with various types of fuel including natural gas and propane, giving users the flexibility to choose the most cost-effective energy source. This versatility also helps to extend the lifespan of the boiler as it can be easily adapted to changing energy needs.

In conclusion, the Weil-McLain 550-110-260/02002 is a high-performance boiler that combines durability, efficiency, and advanced technology. With its robust construction, efficient burner system, and user-friendly controls, it stands out as a reliable heating solution for both commercial and residential applications. The commitment to quality and innovation makes this model a preferred choice for those seeking dependable heating systems. Whether for new installations or replacements, the Weil-McLain 550-110-260/02002 delivers exceptional performance and value.
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