Weil-McLain LGB-20, LGB-7, LGB-14, LGB-8 Pilot burner assembly, typical, Main flame sensor assembly

Page 3

Universal Control System – Propane gas

I New installation – continued

Figure 1

Pilot burner assembly, typical

LGB-A84-B

Figure 2

Main flame sensor assembly

LGB-A85

Igniter

Sensor

Locating Slot

Burner Support Bar

Pilot Line Tubing

Sensor Lead

Igniter Lead

Flame

Sensor

Locating Slot

Burner Support Bar

Sensor Lead

UCS Pilot

Burner

Compression

Union

10-32 x 5/16“ Machine Screws(2)

Ground Leadwire: Connect to Pilot Proving Module 24 V (GND) terminal

Pilot Mounting

Bracket

10-32 x 1/4“ Machine Screws (2)

Main Burner

(with Pilot

Mounting

Bracket)

6-32 x 5/16“ Type ”F” Self Tapping Screws(2)

10-32 x 5/16“ Machine Screws(2)

Ground Leadwire: Connect to Main Flame Proving Module 24 V (GND) terminal

Flame Sensor Mounting Bracket

Main Burner

(with Pilot

Mounting

Bracket)

Part Number 550-141-797/0798

3

Image 3
Contents LGBGas-fired boiler Gas control arrangement New installationMain flame sensor assembly Pilot burner assembly, typicalLGB-6 to LGB-23Series 2 Control Supplement III Gas piping IV WiringWiring diagram Junction box assembly dual base boilers IV WiringStarting boiler Operating instructionsParts drawing VI Parts list U.S. boilersCanadian parts drawing VII Parts list Canadian boilersWeil-McLain Blaine Street Michigan City,

LGB-19, LGB-6, LGB-8, LGB-11, LGB-7 specifications

Weil-McLain's LGB series of cast iron boilers, including models LGB-10, LGB-9, LGB-8, LGB-18, and LGB-15, are renowned for their efficiency, durability, and reliable performance in commercial and industrial heating applications. These boilers are designed to meet a broad range of heating demands, making them a popular choice among professionals in the HVAC industry.

One of the main features of the LGB series is its sectional cast iron design. This allows for superior heat retention and efficient heat transfer, ensuring minimal energy loss throughout the heating process. The cast iron construction also provides exceptional durability, allowing these boilers to withstand high operating pressures and prolonging their lifespan compared to other materials.

The LGB series employs an advanced burner system that enhances combustion efficiency. The gas-fired models are equipped with a power burner that ensures precise fuel-to-air ratios, resulting in optimal combustion and reduced greenhouse gas emissions. Additionally, Weil-McLain boilers are designed to operate quietly, making them suitable for use in noise-sensitive environments.

A significant technological advancement in these models includes their electronic ignition systems, which eliminate the need for pilot lights, thereby increasing safety and reducing energy consumption. This technology also contributes to the overall ease of operation. The series features a wide range of firing rates, enabling users to adjust the boiler’s output according to specific heating requirements.

The LGB-10, LGB-9, LGB-8, LGB-18, and LGB-15 models are available with various options such as built-in draft diverters and low water cut-off features to enhance safety and performance. Moreover, these boilers are compatible with different types of heating systems, including hot water and steam applications, making them versatile for a variety of installations.

In terms of efficiency, the Weil-McLain LGB series typically achieves an Annual Fuel Utilization Efficiency (AFUE) rating that meets or exceeds industry standards, ensuring lower operational costs and energy savings for consumers. This combination of features, technologies, and characteristics makes the Weil-McLain LGB series an exceptional choice for those looking for reliable and efficient heating solutions in demanding applications.