Install Packaged Boiler

Place boiler:

1. Remove circulator strapped to pallet.

Circulator will be damaged if not removed before boiler is

lifted from pallet.

2. Remove boiler from pallet.

Do not drop boiler or bump jacket on floor or pallet.

Damage to boiler can result.

Smaller sized boilers may be top heavy. Use caution when

handling to avoid minor personal injury or property damage.

3.Boiler is shipped for back flue outlet. To change to top flue outlet (see FIGURE 2):

a.Remove jacket cap on top of boiler.

b.Loosen two screws holding flue cap strap to collector hood. Remove strap and flue cap from opening. Re-tightenscrews.

c.Check rope placement inside flue cap.

(Read under step #6 below).

d.Loosen two screws on back flue outlet. Set flue cap on outlet. Install strap by engaging slots in screws. Tighten screws. Make sure cap is securely installed.

e.Snap jacket cap in back outlet opening.

Jacket cap must be in place on boiler to avoid requiring

an 18” minimum clearance from back or top of boiler to combustible material.

4.Check level. Shim legs, if needed.

5.Check for secure placement of insulation on target wall, chamber floor and burner door.

6.Visually check:

a.Flue collector hood seal.

b.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.

Perform hydrostatic pressure test:

1.Remove relief valve installed in boiler.

2.Install air vent in “N” tapping on top boiler.

3.Plug supply and return tappings.

4.Drain valve is already factory-installed.

5.Fill boiler. Vent all air. Pressure test boiler at 1½ times working pressure.

Do not leave boiler unattended. Cold water fill can expand and damage cast iron, resulting in severe personal

injury, death or substantial property damage.

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

7.Drain boiler. Repair leaks if found.

Do not use petroleum-based sealing compounds to repair

leaks. Damage to system components can result, causing property damage.

8.Retest boiler after repairing leaks.

9.Remove air vent and plugs. Reinstall relief valve.

Go to page 12 to connect breeching and venting

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.