Weil-McLain LGB 6-20 Series Control Supplement

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Weil-McLain LGB 6-20 Series Manual Information:

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Summary of Contents:

[Page 1] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/0798 Contents I. New installation .......... 2 II. Existing installation .... 4 III. Water and steam trim components .................. 4 IV. Gas piping ................... 5 V. Wiring ........................... 5 Sequence of...

[Page 2] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/07982 LGB-6 to LGB-20 Series 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 orific...

[Page 3] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/0798 3 CSD-1 Control System – Propane gas Figure 1 Pilot burner assembly, typical Figure 2 Main flame sensor assembly I New installation – continued ...

[Page 4] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/07984 LGB-6 to LGB-20 Series 2 – Control Supplement 1. These instructions are for use with Propane Control Cartons as listed in Gas Control Arrangement, Table 2 (page 2). 2. Remove jacket door(s) and access panel(s). 3. Disc...

[Page 5] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/0798 5 CSD-1 Control System – Propane gas IV Gas piping 1. Contact gas supplier to size pipes, tanks and regulator. a. Inlet gas pressure to manual main shut-off gas valve — minimum 11” W.C., maximum 13” W.C. b. If pre...

[Page 6] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/07986 LGB-6 to LGB-20 Series 2 – Control Supplement Part Number 550-141-816/0798 7 CSD-1 Control System – Propane gas Figure 3 Wiring diagram SENSOR MAIN FLAME FIRING RATE CONTROL (WHEN USED) STAGE COMBINATION VALVE W/REGU...

[Page 7] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/07988 LGB-6 to LGB-20 Series 2 – Control Supplement 1. Operating control begins startup sequence. a. Limit control contacts are closed. 2. Pilot proving module energized. a. Pilot solenoid opens. b. Pilot ignition spark begi...

[Page 8] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/0798 9 CSD-1 Control System – Propane gas Figure 5 Field wiring diagram ...

[Page 9] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/079810 LGB-6 to LGB-20 Series 2 – Control Supplement 1. Remove red (MV) and blue (PV) wires from main gas valve. 2. Close main test firing valve attached to the manifold. 3. Check that both leak test valves are closed and re...

[Page 10] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/0798 11 CSD-1 Control System – Propane gas 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,...

[Page 11] Weil-McLain LGB 6-20 Series

Part Number 550-141-816/079812 LGB-6 to LGB-20 Series 2 – Control Supplement Weil-McLain 500 Blaine Street Michigan City, IN 46360-2388 http://www.weil-mclain.com VIII Parts list Figure 6 Ref. No. Description Size Vendor/Part Number Weil-McLain Par...