Weil-McLain GL-E223-ADOC 0311 manual Components, Operation, Potential problems

Page 10

AQUA PLUS indirect-fired water heaters — Product Manual

Recirculation (continued)

Components

Circulator (Figure 6, item 1)

1.Little flow is required to maintain a temperature in the piping.

2.Size of circulator depends on minimum flow re- quirements of the tempering valve.

3.Minimum flow rates of the tempering valve must be maintained.

Aquastat (Figure 6, item 2)

1.Used to control the on-off position of the circula- tor. Aquastat is set 5° to 10° lower than mixed water outlet of the mixing valve (#7).

2.The circulator cannot run continuously as bypass through the mixing valve will eventually allow the temperature on the piping to climb to the water heater temperature during draw periods.

Check valves (Figure 6, items 3–6)

1.Assure the flow of water in one direction.

2.Each check valve functions as follows:

a.#3 and #4 prevent bypass in the event of pres- sure drop.

b.#5 prevents thermal siphoning of hot water to the cold water supply.

c.#6 prevents flow of cold water to the tempered water supply. A draw of tempered water will not result in flow of cold water into the return loop.

Operation

1.During period of normal use (fixtures on) — Cir- culator is off. There is no flow through #6, there is flow through #5 equal to the flow at the fixtures, there is flow through #3 and/or #4 equal to flow at fixture.

2.When all fixtures are off — Circulator is off. There is no flow through #3, #4, #5 or #6. Water temperature in piping is cooling.

3.When temperature at aquastat #2 falls 10° below temperature to be maintained — Circulator is on. There is flow through #6 equal to the minimum required by the mixing valve, flow through #3 and #4 equals the flow of the circulator. There is no flow through #5.

4.Aquastat reaches temperature — Circulator is off. There is no flow through #3, #4, #5 or #6.

10

Figure 6 Recirculation piping

Potential problems

1.Missing check valves #3 or #4 — Extreme pressure drop can cause reverse flow of water; hot to cold supply or cold to hot supply.

2.Missing check valve #5 — Hot water can migrate from the water heater back through the cold water supply.

3.Missing check valve #6 — Cold water can be forced back through the tempered water supply when a fixture is opened.

4.No aquastat #2 — Circulator runs continuously. Small amount of water will pass through mixing valve. Eventually all hot water is flow- ing through valve. Recirculated water through cold port, hot water through hot port.

5.Circulator too small — Mixing valve performance erratic.

Part number GL-E223-ADOC 0311

Page 9 Page 11
Image 10
Page 9 Page 11
Contents Product Manual Contents Operating restrictions When servicing water heaterPlease read before proceeding Boiler water restrictionsRecommended clearances Pre-installationClearance to combustible materials Water heater operating restrictions Domestic water piping requirementsHot Water Can Scald General applications Domestic water pipingPiping overview Massachusetts applicationsPipe from drain to floor drain, if available Recirculation Recirculation components Components Potential problemsOperation Wiring Boiler-side pipingZoning with circulators primary/secondary system piping Zoning with zone valves direct-connected system piping Zoning with zone valves primary/secondary system piping Dedicated single-boiler piping Multiple water heaters domestic water piping Cific details on installing Connecting to a low-pressure steam boiler Special considerationsFilling the piping Boiler-side wiring and controls Wiring zoning with circulators System pipingWiring zoning with zone valves Maximum boiler-side flow rate Start-up checklistWater heater filling and start-up Filling the domestic water tankSetting the thermostat Water heater temperature adjustmentGeneral notes Annual start-up by qualified service technician Water heater maintenanceMonthly maintenance by user Perform the following proceduresInspect anode and water heater interior Drain the water heater if necessary during shutdown periodsTroubleshooting procedures TroubleshootingPreparation for troubleshooting Insufficient hot water Water quality problemsTop of tank or insulation wet Undersized water heater? Insufficient hot waterBoiler system improperly sized? Check component parts Check location of flow control devices Check boiler operating temperaturesClean the boiler water system Check for air in the system check water heater air ventInstall a recirculation loop Excessive domestic water temperatureInstall a thermostatic mixing valve Reduce stackingFaulty boiler fill valve? Faulty boiler expansion tank?Faulty boiler relief valve? Boiler relief valve lifting or weepingTemperature/pressure relief valve lifting or weeping Check for leaks from sources other than the water heater Water on the floor near the tankTop of tank or insulation wet Is the source of water from the T&P relief valve?Rapid decay of magnesium anode Anodes last less than two yearsWater smells like rotten eggs Water quality problemsMilky water Discolored water from the hot water faucet Replacement parts Aqua PlusAhri ratings 105Ratings with 200F boiler supply water First Hour Rating Capacity GPH Boiler Water Supply at 200FRatings with 190F boiler supply water First Hour Rating Capacity GPH Boiler Water Supply at 190FRatings with 180F boiler supply water First Hour Rating Capacity GPH Boiler Water Supply at 180FDimensions 105

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.
Top Page Image Contents