GOLD CGs Gas-Fired Water Boiler

3c Water piping — multiple zones

Piping multiple zones Follow instructions on pages 14 and 15 to install near-boiler or single-zone piping. (Also refer to Piping for radiant heating systems or converted gravity systems, below, if applicable.)

See Figure 6 or Figure 7 to complete installation.

Zoning with circulators, return temp over 130 °F

Zoning with zone valves, return temp over 130 °F

Piping for radiant heating systems or converted gravity systems

1.Size each circulator to individual circuit requirements.

2.Do not install circulator on boiler (except for primary/secondary piping).

3.Install isolation (balancing) valves to adjust flow to distribute heat to all zones.

4.Install and wire a separate relay for each zone circulator.

1.Install isolation (balancing) valves to adjust flow to distribute heat to all zones.

2.Provide a separate 24-volt transformer to power the zone valves. Size the transformer to handle the total rated load of all connected zone valves.

Converted gravity (or steam) systems

Whenever possible, use the primary/secondary piping shown in Figures 8 or 9 on page 19. This piping design allows changing boiler flow rate without affecting primary circuit flow rate.

If Figures 8 or 9 cannot be used, use the boiler-bypass piping shown in Figure 10 or Figure

11on page 21. You can also use the piping shown in Figure 12 on page 23 (system-bypass), if the reduced flow rate in the heating system will not cause heat distribution problems.

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.

Radiant heating systems

Preferably, use primary/secondary piping, as shown in Figures 8 or 9 on page 19. Alternatively, use the method of either Figure 10 or Figure 11 on page 21. Do not use the piping of Figure 12 (system-bypass), because this method does not control radiant system supply temperature.

If radiant system tubing has no oxygen barrier, a heat exchanger must be used.

Radiant heating system piping should include a means of regulating the boiler return water temperature and the system supply temperature (such as provided by an injection pumping control). Boiler return water temperature will be adequately controlled using the methods shown in this manual provided the system supply temperature is relatively constant.

Do not apply the methods in this manual if the system is equipped with an outdoor reset control. Instead, provide controls and piping which can regulate the boiler return water temperature at no less than 130 °F regardless of system supply temperature. Contact your Weil-McLain representative for suggested piping and control methods. Failure to prevent cold return water temperature to the boiler could cause corrosion damage to the sections or burners, resulting in possible severe personal injury, death or substantial property damage.

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Part number 550-110-260/0200

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Weil-McLain 550-110-260/02002 manual 3c Water piping multiple zones, Converted gravity or steam systems
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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.

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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.
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