Automatic air vents if used Main burner flame

— CGs boilers only

UserísInformationManual

❏Check monthly . . . . . . . . . . . . . . . .

Automatic air vents (if used) Main burner flame

1. See Figure 4.		Proper main burner flame (see Figure 6):
1. See Figure 4.

2.Remove the cap from any automatic air vent in the system and check operation by depressing valve B slightly with the tip of a screwdriver.

3.If the air vent valve appears to be working freely and not leaking, replace cap A, twisting all the way on.

4.Loosen cap A one turn to allow vent to operate.

5.Have vent replaced if it does not operate correctly.

Figure 4 Automatic air vent

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1. Yellow-orange streaks may appear (caused by dust).

Improper main burner flame:

1.Overfired — Large flames.

2.Underfired — Small flames.

3.Lack of primary air — Yellow tipping on flames (sooting will occur).

Figure 6 Main burner flame, typical

Pilot burner flame

Proper pilot flame (see Figure 5):

1.Blue flame.

2.Inner cone engulfing thermocouple or thermopile (standing pilot) or pilot flame sensor (spark-ignited pilot).

3.Thermocouple or thermopile, or pilot flame sensor glowing cherry red.

Improper pilot flame:

1.Overfired — Large flame lifting or blowing past pilot flame sensor.

2.Underfired — Small flame. Inner cone not engulfing pilot flame sensor.

3.Lack of primary air — Yellow flame tip.

4.Incorrectly heated pilot flame sensor.

Figure 5 Pilot burner and flame, typical

Inner

Sparkcone electrode

Pilot flame sensor (spark- ignited pilots)

— or —

Thermocouple or thermopile (standing pilots)

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Transparent blue flame

Inner flame

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Clean vent termination & air intake screens

1.Remove all lint and debris from both the boiler air intake screen and the flue discharge screen.

The boiler control module will sense blockage of the air intake or flue and lockout if the blockage is excessive. It will signal the failure by flashing the appropriate indicator lights on the control board.

2.If removing the debris does not allow the boiler to operate correctly afterwards, contact your qualified service technician to inspect the boiler and vent/ air systems.

Check condensate drain system

1.Inspect condensate drain fittings and tubing. Verify that condensate can flow freely to drain.

Part Number 550-110-592/1000

CGi, PFG, PEG, LGB, CGs specifications

Weil-McLain is a highly regarded manufacturer of boilers and hydronic heating systems, well-known for its innovative approach and commitment to quality. Among its extensive product lineup, the PEG, LGB, CGs, PFG, and CGi series stands out due to their advanced engineering, efficiency, and reliability. Each series caters to varying residential and commercial heating needs, making them versatile options for consumers.

The PEG series is recognized for its impressive efficiency ratings and robust construction. It utilizes a cast iron heat exchanger, which not only enhances heat retention but also ensures longevity. Its low water content and advanced control features allow for quick heating response times, making it ideal for homes requiring reliable heat. The PEG series is available in a range of sizes, ensuring a fit for any application.

The LGB series is tailored for light commercial applications, combining efficiency with remarkable performance. Built with Weil-McLain’s signature high-grade cast iron, the LGB models are designed for durability and ease of maintenance. They offer an impressive thermal efficiency and feature a compact design, making them suitable for installations where space is a concern. Advanced options such as multiple venting configurations contribute to their versatility, adapting to various building designs.

The CGs series is specifically designed for commercial applications and emphasizes efficiency through advanced technology, including an intelligent control system that optimizes operation based on demand. Its low NOx design helps meet stringent environmental standards, while its robust build ensures high performance under heavy load conditions. The CGs is often sought after for larger facilities requiring consistent and efficient heating.

Weil-McLain’s PFG series takes efficiency to the next level with its highly efficient gas-fired design. It features a light-weight configuration and quick-connect venting options, which simplify installation. This series is known for its low emissions and high energy efficiency, making it an eco-friendly choice for today’s environmentally conscious consumers.

Lastly, the CGi series is a standout for residential applications, offering flexibility and ease of use. The series features a cast iron heat exchanger and is compatible with various control systems, providing an adaptable and efficient solution for home heating.

Overall, Weil-McLain’s PEG, LGB, CGs, PFG, and CGi series exemplify the company’s dedication to quality, energy efficiency, and customer satisfaction, providing reliable heating solutions for diverse applications.