Boiler Manual

3f system-bypass (alternate) piping —

for converted gravity (or steam) systems

 

From system

To system

 

7a

7b

 

 

Alternate

 

 

circulator

 

8

location

 

10

 

9

Cold

11

 

water

 

 

fill

 

 

 

12

 

26018

 

 

Figure 12 System-bypass piping

Zoning with zone valve or circulators, return water 130 °F or higher.

(Alternative to boiler-bypass piping

Figures 10 and 11)

3System or zone circulator

7System temperature valves (see instructions to the left for adjusting valves)

8Blend temperature gauge

9Relief valve

10Automatic air vent (with diaphragm-type expansion tank), or connect to tank fitting (closed-type expansion tank). DO NOT use an automatic air vent when using closed-type expansion tank. It would allow air to leave the system, causing waterlogging of the expansion tank.

11Fill valve

12Diaphragm-type or bladder-type expansion tank, if used (For closed-type expansion tank, pipe from top of air separator to tank fitting as in Figure 5.)

3g Water piping — refrigeration system

Figure 13 Piping refrigeration systems

Prevent chilled water from entering boiler

System supply

Circulator

Expansion tank

Shut-off valve

Water chiller

Install boiler so that chilled medium is piped in parallel with the heating boiler. Use appropriate valves to prevent chilled medium from entering boiler. See Figure 13 for typical installation of balancing valve and check valve.

Strainer

If boiler is connected to heating coils located in air handling units

Check valve

System return

Boiler

where they can be exposed to refrigerated air, use flow control valves or other automatic means to prevent gravity circulation during

 

Balancing

26019

valve

cooling cycle.

Part number 550-110-260/0200

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Weil-McLain 550-110-260/02002 manual 3f system-bypass alternate piping, 3g Water piping refrigeration system

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.

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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.

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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.