Start-up

SGO with float-type low water cutoff:

1.If burner does not fire, check for:

●Switch on boiler or additional shut-off switches turned off.

●Fuses or breaker switch tripped.

●Thermostat set below room temperature.

●Fuel valves turned off.

●Not enough oil in tank to supply burner.

●No water in gauge glass.

2.Correct problems found in step #1. If burner does not fire, press reset button on burner primary control only once. Repeated presses will deposit oil in combustion chamber.

Burner must never be fired when oil is in combustion chamber. Immedi- ately call qualified service technician.

3.If burner still does not fire, call qualified service technician.

Gauge Glass

Steam Relief Valve (on back of boiler)

Tankless Heater

Control

Located in tankless heater plate (sizes 3-5)

or in tapping in back section (sizes 6-9)

Float-Type

Low Water

Cutoff

Burner

Disconnect

Plug

	n
n	n
n
	n

	n	n
	n	n
		n

Pressure Control

Pressure Gauge

Service Switch

on Boiler

Reset Button on Burner Primary Control

Burner Primary

Control

Part No. 550-141-830/1202

SGO Boiler with Float-Type Low Water Cutoff
(See Page 6 for Probe-Type Low Water Cutoff)	5
Figure 1	5

550-141-830/1202 specifications

The Weil-McLain 550-141-830/1202 is a high-efficiency boiler designed for water heating and heating applications in residential and commercial environments. Known for its reliability and performance, this model incorporates advanced technologies that enhance energy efficiency and reduce operating costs.

One of the standout features of the Weil-McLain 550-141-830/1202 is its robust construction, utilizing durable materials to ensure longevity and resistance to wear and corrosion. This boiler is designed with a high output capacity, providing ample heat for various applications, making it suitable for larger homes or commercial establishments. The unit is also engineered to accommodate multiple zoning configurations, allowing for customizable heating solutions tailored to specific needs.

This model incorporates a state-of-the-art control system that optimizes performance by adjusting to the specific demands of the heating system. This smart technology enables precise temperature control and enhances energy savings. Additionally, the Weil-McLain 550-141-830/1202 is compatible with smart home systems, providing users with the ability to monitor and control heating functions remotely.

Efficiency is further enhanced by the incorporation of a modulating burner, which adjusts its output based on the heating needs of the space. This allows for significant reductions in fuel consumption while maintaining comfort. The unit is also designed to work with various fuel types, including natural gas and propane, offering flexibility to homeowners and businesses alike.

Another significant characteristic is its compact design, which allows for versatile installation options, even in tight spaces. The appliance is also equipped with advanced safety features, including low water cutoff, pressure relief valves, and venting options that ensure safe and efficient operation.

Maintenance is a key consideration with the Weil-McLain 550-141-830/1202. Its user-friendly design allows for easy access to components, facilitating routine inspections and servicing. This ease of maintenance contributes to its reliability and prolongs the lifespan of the boiler.

In summary, the Weil-McLain 550-141-830/1202 boiler is a sophisticated heating solution characterized by its efficiency, durability, and advanced technology. Ideal for both residential and commercial applications, it ensures optimal comfort while keeping energy costs manageable. With its robust features and ease of use, it remains a preferred choice among homeowners and professionals in the heating industry.