Universal Control System – Propane gas

V Operating instructions

Starting boiler

A.This boiler is equipped with a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. The gas supply to this pilot is controlled by Pilot switch box. This boiler is also equipped with an ignition device which automatically lights a second pilot. The gas supply to this pilot is controlled by the Gas control. Do not try to light this pilot by hand.

B.BEFORE OPERATING THE MANUAL PILOT, smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

•Do not try to light any appliance.

•Do not touch any electric switch; do not use any phone in your building.

•Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

•If you cannot reach your gas supplier, call the fire department.

C.Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control, which has been under water.

This document is intended only as a supplement to the LGB Gas-Fired Boiler Manual. Follow all instructions in the Manual, including those regarding start-up (found in Section VIII, “Placing boiler in operation”).

1. STOP! Read the safety information above.

2. Set the Operating control to lowest setting.

3. Turn off all electrical power to the appliance.

4.Remove the Base access shield.

5.Close Pilot shut-off valve connected to Manual main shut-off valve. Close Manual main shut-off valve.

6.Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow“B”in the safety information above. If you don’t smell gas, go to the next step.

7.Open Pilot shut-off valve.

8.Press and hold the reset lever on the Pilot switch box. Manually light the

pilot while holding the lever down. Air in the gas supply line will have to purge through the line before sufficient gas will reach the pilot.

9. After purging all air, hold the Pilot switch box lever for about 1 minute to heat the thermocouple.

10.Release the Pilot switch box lever. The pilot should remain lit.

11.Open the Manual main shut-off valve and follow the sequence below.

12.This appliance is also equipped with an ignition device which automatically lights the second pilot. Do not try to light this pilot by hand.

13.Turn on all electric power to the appliance.

14.Set Operating control to desired setting.

15.If the appliance will not operate, turn off gas to the appliance by closing the Manual main shut-off valve and Pilot shut-off valve. Call your service technician or gas supplier.

16.Replace Base access shield and Front panel.

Part Number 550-141-797/0798

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Weil-McLain LGB-10, LGB-7, LGB-14, LGB-8, LGB-20, LGB-13, LGB-15, LGB-12, LGB-17, LGB-16 Operating instructions, Starting boiler
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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.
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