Weil-McLain 550-141-826/1201 Install Packaged and Non-Packaged Boiler, Install boiler controls

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Install Packaged and Non-Packaged Boiler

Perform hydrostatic pressure test:

1.See FIGURE 4 and Control Tapping Table below to install:

a.Boiler drain.

b.Water pressure gauge (test only). Be sure gauge can handle test pressure.

c.Air vent in upper “N” tapping.

d.Plugs in remaining tappings.

2.Fill boiler. Vent all air. Pressure test boiler at 1 times working pressure. For boilers split and reassembled, test between 75 and 85 psig.

Do not leave boiler unattended. Cold water fill could expand and

damage cast iron, resulting in severe personal injury, death or substantial property damage.

3.Check for maintained gauge pressure for more than 10 minutes. Visually check for leaks if gauge pressure drops.

4.Drain boiler. Repair leaks if found.

Do not use petroleum-based compounds to repair leaks.

Damage to system components can result, causing property damage.

5.Re-test boiler after repairing leaks.

6.Remove pressure gauge, air vent and plugs from tappings used for controls.

E3

N

 

C

 

 

 

 

 

 

 

 

 

 

 

L

R1

B1 H

7.Visually check:

a.Sealing rope placement.

b.Metal-to-metal contact around port openings.

c.Flue collector hood seal.

d.Burner mounting door seal.

Obtain gas-tight seal to prevent possible flue gas leakage and

carbon monoxide emissions, which can lead to severe personal injury or death.

Install jacket (sizes 7 through 9 only):

Before installing jacket, remove burner mounting door. See jacket instructions for details.

Install boiler controls:

See Control Tapping Table and FIGURES 4 and 5 to install controls.

1.Install limit control. If not furnished, use high limit with maximum 220°F setting.

2.Affix CP number label(s) on jacket front panel.

CONTROL TAPPING TABLE

LOCATION

SIZE

FUNCTION

 

 

 

B1

1½"

Return Piping

B2

1½"

Alternate Return Piping

for A/B WGO

 

 

C

1½"

Supply Piping

E3

¾"

Pressure-Temperature Gauge

H

¾"

Drain Valve

L

¾"

High Limit Control

N

½"

Air Vent or

Expansion Tank Piping

 

 

R1

¾"

Relief Valve

 

 

 

B2

Front Section

Back Section

 

Control Tapping Location

 

FIGURE 4

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Contents This Manual Includes Installation Start-Up Boiler Parts Read This Page First Symbol DefinitionsWhen Calling or Writing About the Boiler Hazard DefinitionsTable of Contents Before selecting boiler location Before Installing BoilerInstallations must comply with Provide clearances around boiler see FigureLay a foundation, if needed Provide air for combustion and ventilationBoiler Foundation Size Table Perform hydrostatic pressure test Install Packaged BoilerPlace boiler Go to page 12 to connect breeching and ventingChange From Back Flue Outlet to Top Flue Outlet Optional Install Non-Packaged Boiler Fiberglass wool and ceramic fiber materialsFlue Collector Hood Install boiler controls Install Packaged and Non-Packaged BoilerInstall jacket sizes 7 through 9 only Control Tapping TableInstall burner also refer to instructions packed with burner General chimney requirements Connect BreechingMinimum Chimney Size Table Connect Breeching General piping information Install pipingConnect Water Piping Diaphragm expansion tank FigureIsolation Piping Multiple Zones Zoning with circulatorsPiping for systems requiring temperatures below 140F Use with refrigeration systems Thermostat wiring Connect WiringGeneral wiring requirements Burner wiringConnect Wiring Connect Wiring General oil piping requirements Connect Oil PipingOil piping connection at burner Tips for water systems Start-UpFill the system To place in operationCheck-Out Procedure Check off steps as completedBurner adjustments for P and a boilers AppendixClose clearance installation Dimension a Parts List DescriptionParts Drawing Dimensions DimensionsIntermediate DIA Ratings WGO Gold OIL Water Boiler Ratings

550-141-826/1201 specifications

The Weil-McLain 550-141-826/1201 is a high-efficiency boiler designed for commercial applications, providing unmatched performance, reliability, and advanced technology features. This model is specifically engineered to cater to a range of heating needs, making it suitable for various settings, such as schools, hospitals, and large commercial spaces.

One of the key features of the Weil-McLain 550-141-826/1201 is its impressive thermal efficiency. With a high AFUE (Annual Fuel Utilization Efficiency) rating, this boiler maximizes energy usage, resulting in lower utility costs for end-users. The efficient performance not only translates to better energy savings but also contributes to a reduced carbon footprint, aligning with modern sustainability goals.

The powerful burner technology incorporated in the Weil-McLain 550-141-826/1201 ensures precise control over the combustion process. This results in consistent heating performance and minimizes emissions, meeting stringent environmental regulations. The unit utilizes advanced modulation technology, which allows the burner to adjust its output according to the demand, providing significant energy savings and enhanced comfort.

Another standout characteristic of this boiler is its robust construction. Built with high-quality materials, the Weil-McLain 550-141-826/1201 is designed to endure demanding conditions, ensuring longevity and reduced maintenance needs. The boiler features a durable heat exchanger, which optimizes thermal transfer efficiency while resisting corrosion and thermal stress.

The user-friendly controls and monitoring systems enhance the operational experience, allowing for easy adjustments and status checks. The integrated diagnostic capabilities provide valuable insights for troubleshooting, making maintenance straightforward and reducing downtime.

Furthermore, the versatility of the Weil-McLain 550-141-826/1201 allows for multiple installation configurations, accommodating different system requirements and space limitations. Its compact design makes it an ideal choice for facilities where space is a premium.

In summary, the Weil-McLain 550-141-826/1201 stands out in the commercial boiler market with its high efficiency, innovative burner technology, robust construction, user-friendly controls, and versatile installation options. This model exemplifies Weil-McLain's commitment to energy-efficient heating solutions, setting a benchmark for performance and reliability in the industry.
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