Start-Up, Fill the system | Weil-McLain 550-141-826/1201 specs

Start-Up

Follow information below to prevent severe personal injury,

death or substantial property damage:

•Do not use gasoline crankcase drainings or any oil containing gasoline. See burner manual for proper fuel oil.

•Do not attempt to start burner when excess oil has accumulated, when unit is full of vapor or when combustion chamber is very hot.

•Do not start burner unless collector hood, flue cap, jacket cap, breeching and burner mounting door are secured in place.

•Never burn garbage or paper in the boiler.

•Never leave combustible material around it.

Fill the system:

1.Close manual and automatic air vents and boiler drain cock.

2.Fill to correct system pressure. Correct pressure will vary with each installation. Normal cold water fill pressure for residential systems is 12 psig. Boiler water pH 7.0 to 8.5 is recommended.

Failure to maintain recommended pH level can

cause section failure and leaks.

3.Open automatic air vent one turn.

4.Open other vents.

a.Starting on the lowest floor, open air vents one at a time until water squirts out. Close vent.

b.Repeat with remaining vents.

5.Refill to correct pressure.

Tips for water systems:

•Check boiler and system piping for leaks. Continual makeup water will reduce boiler life. Minerals can build up in sections, reducing heat transfer and causing cast iron to overheat, resulting in section failure.

Failure to maintain recommended pH and repair

leaks can cause section iron corrosion, leading to section failure and leaks. Do not use petroleum-based sealing or stop-leak compounds in boiler systems. Damage to system components can result.

•For pH conditions outside 7.0 to 8.5 range or unusually hard water areas (above 7 grains hardness), consult local water treatment company.

•When using antifreeze:

Do not use automotive, ethylene glycol, undiluted or petroleum-

based antifreeze. Severe personal injury, death or substantial property damage can result.

—Use antifreeze especially made for hydronic systems. Inhibited propylene glycol is recommended.

—50% solution provides protection to about -30°F. Do not exceed 50% mixture.

—Local codes may require back-flow preventer or actual disconnect from city water supply.

—Determine quantity according to system water content. Boiler water content is listed on back cover of manual. Percent of solution will affect sizing of heat distribution units, circulator and expansion tank.

—Follow antifreeze manufacturer’s instructions.

To place in operation:

1.Verify boiler is filled with water.

2.Open burner mounting door and verify rear target wall, floor and burner door insulations are in proper position.

3.Verify burner mounting door is closed tightly and burner wiring harness is connected to junction box.

4.Factory burner adjustment and settings may not be suitable for specific job conditions. See Appendix, page 25.

Make final burner adjustments using combustion test

equipment to assure proper operation. Do not fire boiler without water. Sections will overheat, damaging boiler and resulting in substantial property damage.

5.Vent air from system. Repeat steps 4 and 5 under “Fill the system.” Air in system can interfere with water circulation and cause improper heat distribution.

6.Check boiler and system piping for leaks. See “Tips for water systems.”

7.Inspect breeching and venting for proper operation.

For additional information, refer to instructions packed with boiler or burner:		23

•	Burner Manual
•	Maintenance and Service Guide for GOLD Oil Water Boilers

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.