LGB-6 to LGB-20Series 2 – Control Supplement

I New installation

1.Remove all burners from base box assembly. Remove 3.95 mm natural gas main burner orifices in manifold. Install 2.40 mm propane gas main burner orifices. Use pipe dope sparingly only on male ends. Use pipe dope compatible with propane gases. Do not overtighten orifices.

2.Install pilot burners and flame sensor(s). See Figures 1 and 2 (page 3). Follow Table 1, below for electronic pilot burner (UCS), standing pilot burner (Q327) and flame sensor locations on manifold.

3.Install gas controls and ignition control panel as shown in Table 2, below and Figure 6 (page 12).

4.Attach pilot switch box to interior jacket panel. See Figure 6 (page 12). Connect thermocouple from standing pilot to switch box. Cut 60” pilot tubing into 2 pieces to make connections from pilot valve to pilot switch box and from pilot switch box to standing pilot.

5.Attach:

a.550-223-710 label at boiler operating instruction label. Place so that this label reads first.

b.550-223-796 label at rating label.

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2

Part Number 550-141-816/0798

Page 2
Image 2
Weil-McLain 6-20 Series operating instructions New installation, 3URSDQH

6-20 Series specifications

The Weil-McLain 6-20 Series is designed to meet the heating needs of residential and commercial properties with exceptional efficiency and reliability. This versatile steam and hot water boiler series is known for its robust construction and innovative technologies, making it a preferred choice among heating professionals.

One of the main features of the 6-20 Series is its durable cast iron construction, which ensures longevity and superior performance. The cast iron sections provide excellent heat retention, allowing the boiler to efficiently transfer heat to the water or steam, thus enhancing overall energy efficiency. The design is optimized to withstand high pressure and temperature, making it exceptionally resilient under demanding conditions.

Efficiency is at the heart of the 6-20 Series, with models designed to achieve high Annual Fuel Utilization Efficiency (AFUE) ratings. These efficiencies are made possible through advanced combustion technology and smart controls that monitor and adjust the heating process based on real-time needs. This not only conserves fuel but also reduces greenhouse gas emissions, supporting environmentally-friendly heating solutions.

Another significant advancement in the Weil-McLain 6-20 Series is its integrated control system. The advanced boiler control features programmable settings that allow users to customize their heating cycles, enabling better management of energy consumption and operational costs. Furthermore, the boiler comes equipped with a state-of-the-art burner system that ensures clean and efficient combustion, contributing to reduced maintenance needs.

The 6-20 Series also prioritizes user-friendliness, with installation and maintenance simplified through thoughtful engineering. Its compact design allows for flexibility in placement, whether in basements, mechanical rooms, or other areas with limited space. The high-quality insulation minimizes heat loss, further enhancing efficiency and performance.

Safety features are robust in the Weil-McLain 6-20 Series, ensuring peace of mind for homeowners and building managers. Integrated safety controls help monitor the pressure and temperature levels, preventing potentially hazardous situations and ensuring optimal operation.

In conclusion, the Weil-McLain 6-20 Series stands out with its combination of rugged construction, leading-edge technology, and user-oriented design. Whether for residential or commercial applications, its efficient performance and commitment to safety make it a reliable choice for heating solutions.