Operating instructions

PER Series 3 Electric-Hydronic Boilers Installation Instructions

Water treatment

Do not use petroleum-based cleaning or sealing compounds in boiler system. Severe damage to boiler will result, causing substantial property damage.

Eliminate all leaks. Continual fresh makeup water will reduce boiler life. Minerals can build up in section, reducing heat transfer, overheating cast iron, and causing section failure.

In hard water areas or low pH conditions (below 7.0), consult local water treatment company. Boiler water pH of 7.0 to 8.5 is recommended.

Freeze protection (when used)

See WARNING on page 2 for important information regarding glycol hazard.

Do not use automotive, ethylene glycol or undiluted 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.

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

Determine quantity according to system water content. Boiler water content is listed in the Ratings table on page 13. Remember to add in expansion tank water content.

Filling the system with water

Never apply power to the boiler unless the boiler is filled with water.

1.Close manual air vents, drain cocks, and automatic air vent, if used.

2.Fill the boiler and system to an initial pressure of about 12 pounds per square inch.

3.Open automatic air vent one turn, if used.

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

5.Repeat with remaining vents.

6.Refill to correct pressure.

8	Part number 550-141-396/0801

550-141-396/0801 specifications

The Weil-McLain 550-141-396/0801 is a high-performance boiler designed to meet the heating needs of commercial and residential applications. Renowned for its efficiency and durability, this model features advanced technology that ensures reliable operation while maximizing energy savings.

One of the standout characteristics of the Weil-McLain 550-141-396/0801 is its ability to provide maximum heating output with minimal fuel consumption. Equipped with a powerful burner and efficient heat exchanger, this boiler achieves impressive efficiency ratings, making it an economically sound choice for homeowners and businesses alike. The design also incorporates features that reduce emissions, contributing to a more environmentally friendly operation.

The construction of the boiler features robust materials that enhance its durability. The cast iron heat exchanger is built to withstand extreme conditions while maintaining excellent heat retention and distribution. This not only increases the lifespan of the boiler but also minimizes maintenance costs over time. The unit is designed to operate quietly, ensuring a comfortable environment for occupants.

Advancements in technology are evident in the Weil-McLain 550-141-396/0801's control system. It is equipped with a user-friendly digital control interface that simplifies adjustments and monitoring. Users can easily set temperature levels, track performance, and diagnose issues, which allows for timely maintenance and optimal performance. Additionally, compatibility with various thermostats provides flexibility for tailored heating solutions.

Safety is a critical component of the Weil-McLain 550-141-396/0801. It includes multiple safety features such as a spill switch, low-water cutoff, and a pressure relief valve. These mechanisms ensure safe operation and protect against common boiler-related hazards.

In summary, the Weil-McLain 550-141-396/0801 is an excellent choice for those seeking a reliable, efficient, and durable heating solution. With its advanced technology, robust construction, and emphasis on safety, this boiler not only meets but exceeds the expectations of modern heating needs. Whether for residential or commercial installation, the Weil-McLain 550-141-396/0801 stands out as a preferred option among boiler systems, delivering comfort and efficiency for years to come.