AQUA PLUS indirect-fired water heaters — Product Manual

Connecting to a low-pressure steam boiler (continued)

Figure 16 Low pressure steam boiler application — Domestic water heating using water pumped from steam boiler

Notes

•Locate flow / check valve as close as possible to water heater boiler side connec- tions — to reduce heat loss between cycles.

Use memory stop valve 7 to blend some of the water re- turning to the boiler with the hot water coming from the boiler. This will reduce the possibility of flashing (cavita- tion) in the circulator. Slowly open valve 7 until temperature gauge 8 reads 200°F.

Set the memory stop on valve 7 after adjusting. Attach a tag to the valve warning no to close or change valve position.

NOTE — If the boiler water level should drop below ei- ther the water heater boiler water supply or return line, the filling procedure will have to be repeated.

1.This drawing is conceptual only. It shows representa- tive piping components and layout. Weil-McLain does not represent that this drawing meets any partic- ular mechanical or build- ing codes. The installer is responsible for inclusion of all required safety de- vices, or other miscella- neous piping hardware not shown on drawing. The installer is responsible for proper sizing / selection of all hardware shown on this diagram.

2.See boiler manual for spe- cific details on installing the boiler.

Part number GL-E223-ADOC 0311

Filling the piping

1.Parts of the boiler water piping to the water heater may be higher than the wa- ter line, depending on the height of the water heater boiler supply connection. The piping must be air tight to prevent air from pocketing at the top of the piping, stopping flow.

2.The boiler MUST be filled and ready to operate before proceeding. Follow the boiler manual to fill the boiler.

3.Follow the procedure below to fill the boiler-to-water heater piping. See Fig- ure 16.

Step 1 Close isolation valves 5 and 6 to isolate the boiler.

Step 2 Close valve 3 and open valve 4. Con- nect a cold water supply hose to valve 3. Connect a hose from valve 4 to a drainable location.

Step 3 Close valve 10. Open valve 7.

Step 4 Open valve 3. Water will flow through valve 7 and out through valve 4 to drain. Let water run until all air has been removed from the line. Close valve 4. Then close valve 3.

Step 5 Close valve 7. Then open valve 10.

Step 6 Open valve 3. Water will flow through the circulator line, the water heater coil and the return piping, then out through valve 4 to drain. Let water run until all air has been removed from the line. Close valve 4. Then close valve 3. Remove hoses.

Step 7 Follow the instructions in “Water heater filling and start-up,” page 23, to fill the domestic water side of the water heater.

Step 8 Open valve 7 about ¼ turn for an initial setting.

Step 9 Open isolation valves 5and 6. Make sure the boiler water level is correct per the boiler manual.

Step 10 Start the boiler per instructions given in the boiler manual. Allow boiler to begin steaming.

Step 11 Start the DHW circulator. Watch the temperature at gauge 8. Adjust valve 7 until gauge 8 reads about 180°F with system at steady operation.

Step 12 Continue checking under varying DHW demand conditions to ensure system will operate as required.

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Weil-McLain GL-E223-ADOC 0311 manual Filling the piping
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GL-E223-ADOC 0311 specifications

The Weil-McLain GL-E223-ADOC 0311 is a notable addition to the lineup of high-efficiency cast iron boilers designed for both residential and commercial applications. This model stands out due to its focus on reliability, longevity, and energy efficiency, making it an ideal solution for those seeking effective heating solutions.

A key feature of the GL-E223 model is its durable cast iron construction. The cast iron heat exchanger not only enhances the boiler's overall resilience but also improves its thermal efficiency. This characteristic ensures the boiler can withstand the stress of continuous operation while providing consistent heating performance year after year.

The GL-E223-ADOC 0311 employs advanced burner technology, which optimizes combustion efficiency, reducing fuel consumption. With its ability to modulate based on the heating demand, the boiler adjusts its output to ensure it runs at peak efficiency, minimizing energy waste. This feature is particularly beneficial in terms of energy savings and reducing operational costs over time.

In terms of sizing, the Weil-McLain GL-E223 model is engineered to provide adequate heating for a wide range of applications. Its output capacity is meticulously designed to accommodate residential heating requirements while being robust enough for light commercial usage. The controls and monitoring systems integrated into this boiler allow for easy adjustments and improved system management.

One significant characteristic of this model is its built-in features for enhanced safety and convenience. The boiler includes safety controls that prevent overheating, as well as an easy-access inspection and cleaning configuration that extends the life of the unit and eases maintenance efforts.

Furthermore, the GL-E223-ADOC 0311 is designed to be compatible with a range of hydronic heating systems. This adaptability allows for seamless integration into existing infrastructure or new installations, allowing homeowners and businesses the potential for improved heating solutions without extensive modifications.

Overall, the Weil-McLain GL-E223-ADOC 0311 encompasses advanced engineering with its cast iron construction, efficient burner technology, and user-friendly features that ensure reliability and efficiency. Whether for new installations or upgrades, this boiler is a solid choice for efficient heating solutions, resonating well with those prioritizing energy conservation and long-term performance.
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