• Installation

Start-Up

• Maintenance

• Parts

2a Set Packaged Boiler or Block Assembly in Place

For packaged boiler:

1.Remove top jacket panel. Set aside until after boiler is piped.

2.Remove lag screws (2 in front, 2 in rear) from shipping rails.

3.Remove boiler from skid. Cables are already attached to block assembly. See Lifting Weight Chart.

Using crane - hook middle of each cable to eye of crane.

Using hoist - hook middle of each cable to hoist. Raise boiler off skid. Use pipe rollers under skid angles to roll boiler.

4.Place boiler in final position. Center boiler on foundation, if used.

5.Level boiler. Shim under skid angles, if necessary.

6.Cut off cables.

Cables are not intended for long-term usage. Cables may corrode inside boiler, weakening their lifting strength. Failure to remove cables can result in severe personal injury, death or substantial property damage.

7.Proceed to “4a: Perform Hydrostatic Pressure Test,” page 12.

For block assembly:

1.Remove lag screws (2 in front, 2 in rear) from shipping rails.

2.Remove boiler from skid. Cables are already attached to block assembly. See Lifting Weight Chart.

Using crane - attach free end of cables to eye of crane.

Using hoist - attach free end of cables to hoist. Raise boiler off skid. Use pipe rollers under steel skid angles to roll boiler.

3.Place boiler in final position. Center boiler on foundation, if used.

4.Level boiler. Shim under skid angles, if necessary.

5.Cut off cables.

Cables are not intended for long- term usage. Cables may corrode inside boiler, weakening their lifting strength. Failure to remove cables can result in severe personal injury, death or substantial property damage.

6.Inspect block assembly for disjointed sections. Check gas-tight seal of flue collector hood, flue collar and cleanout plates.

Gas tight seal must be

maintained to prevent possible flue gas leakage and carbon monoxide emissions, resulting in severe personal injury or death.

a. Open damper in flue collar.

b. Check inside section assembly for any light passing through unsealed areas.

c. Mark all unsealed areas.

d. At unsealed areas, check for damaged gaskets, sealing rope not in place, loose bolts or nuts, or missing holddown clips. Correct all conditions and repeat step b. If unsealed areas still exist, contact your Weil-McLain distributor or sales office before continuing installation.

7.Proceed to “4a: Perform Hydrostatic Pressure Test,” page 12.

 

 

 

Lifting Weight Chart

 

 

 

 

 

 

 

 

 

 

 

Packaged

Assembled

 

Packaged

Assembled

 

Boiler

Boiler

Block

Boiler

Boiler

Block

 

Model

Lbs.

Lbs.

Model

Lbs.

Lbs.

 

 

 

 

 

 

 

 

378

1355

1150

878

2650

2325

 

 

 

 

 

 

 

 

478

1615

1385

978

2910

2560

 

578

1875

1620

1078

3165

2795

 

678

2130

1855

1178

3425

3030

 

778

2390

2090

1278

3680

3265

 

 

 

 

 

 

 

Part No. 550-141-705

 

 

 

 

5

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Weil-McLain 78 manual 2a Set Packaged Boiler or Block Assembly in Place, For packaged boiler, For block assembly

78 specifications

The Weil-McLain 78 is a high-efficiency, versatile cast iron boiler that has been a staple in residential and commercial heating applications for decades. Renowned for its durability and performance, the boiler is designed to provide reliable heat while maintaining efficiency and minimizing energy consumption.

One of the main features of the Weil-McLain 78 is its cast iron construction. This material is not only known for its longevity but also for its excellent heat retention properties. The cast iron sections allow for a slow, steady heat release, ensuring that spaces remain warm and comfortable. The boiler is built to withstand the rigors of everyday use, making it ideal for both home and business environments.

In terms of technology, the Weil-McLain 78 incorporates an advanced combustion system that optimizes fuel usage. This efficient burning process not only conserves energy but also contributes to lower utility bills for users. Moreover, the boiler is designed to work well with natural gas or propane, giving homeowners and businesses flexibility in fuel choices.

Another characteristic contributing to the Weil-McLain 78’s reputation is its efficiency ratings. With a rating of 83% AFUE (Annual Fuel Utilization Efficiency), this boiler stands out in its class. This efficiency not only reduces carbon emissions but also enhances overall operational effectiveness, allowing for significant energy savings over time.

The Weil-McLain 78 is also designed for ease of installation and maintenance. Its compact design allows it to fit in tighter spaces, and the accessibility of key components simplifies routine servicing. The unit comes with a multitude of options for controls and accessories, ensuring adaptability to various heating systems.

Furthermore, Weil-McLain places a strong emphasis on safety features. The 78 model incorporates multiple safety controls, including a temperature limit switch and an automatic shut-off system. These features help prevent overheating and provide peace of mind for users.

In conclusion, the Weil-McLain 78 combines robust construction, advanced technology, and efficiency, making it an excellent choice for various heating needs. Its reputation for reliability, comfort, and safety has positioned it as a leader in the boiler market for both residential and commercial applications. With the Weil-McLain 78, users can enjoy consistent warmth and comfort for years to come, backed by a trusted name in heating solutions.