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Weil-McLain LGB-12 manual

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Table of contents for the manual

  • Page 1

    P art Number 550-141-797/0798 Contents I . New installation ........... 2 II . Existing installation ..... 4 III. Gas piping ..................... 5 IV. Wiring ............................ 5 Sequence of operation ..... 8 Wiring procedure .............. 8 V. Operating instructions . 9 VI. Parts list – U.S. ........... 1 0 VII.Parts list – Canadi[...]

  • Page 2

    P art Number 550-141-797/0798 2 LGB -6 to LGB -23 Series 2 – Control Su pplement New installation I 1 . R emove all bu r ners from base bo x assembly . Remo ve 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 gas[...]

  • Page 3

    P art Number 550-141-797/0798 3 U niv ersal Control Syst em – Pr opane gas Figure 1 Pilot burner assembly , typical LGB-A84-B Locating Slot Igniter Sensor UCS Pilot Burner 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 (wit[...]

  • Page 4

    P art Number 550-141-797/0798 4 LGB -6 to LGB -23 Series 2 – Control Su pplement 1 . These instructions are for use with Propane Control Cartons as listed in Gas Control Arrangement, T able 2 (page 2). 2 . Remove jacket door(s) and access panel(s). 3 . Disconnect wiring and tubing from existing pilot burner and main flame sensor . 4 . Remove all [...]

  • Page 5

    P art Number 550-141-797/0798 5 U niv ersal Control Syst em – Pr opane gas 1 . Contact gas supplier to siz e pip es, tanks and regulator . a. Inlet gas pressure to manual main shut-off gas valve — minimum 11” W .C., maximum 13” W .C. b. If pressure to gas valv e exc eeds 13” W .C., install 100% lock-up gas pressure regulat or upstream of [...]

  • Page 6

    P art Number 550-141-797/0798 6 LGB -6 to LGB -23 Series 2 – Control Su pplement P art Number 550-141-797/0798 7 U niv ersal Control Sy stem – P ropane gas Figure 3 Wiring diagram[...]

  • Page 7

    P art Number 550-141-797/0798 8 LGB -6 to LGB -23 Series 2 – Control Su pplement Wiring Procedure IV Wiring – continued 1 . Determine right or left electrical supply wiring. 2 . Attach electrical junction box(es) to inside jacket end panel. Screws and nuts are provided. For dual base boilers, use offset nipples (provided) to co nnec t juction b[...]

  • Page 8

    P art Number 550-141-797/0798 9 U niv ersal Control Syst em – Pr opane 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, “Placing boiler in operation ”). A . This boiler is equipped with a pilot which must be[...]

  • Page 9

    P art Number 550-141-797/0798 10 LGB -6 to LGB -23 Series 2 – Control Su pplement VI P arts list - U .S . boilers Figure 5 U .S. parts drawing Ref. No. Descrip tion Size Vendor/ Part Number Weil-McL ain Part Numb er 1 Main f lame se nsor Honey wel l 392956 511-724- 274 Main b urner with pilot brac ket Weil -McLai n 512-200-055 Main f lame se nsor[...]

  • Page 10

    P art Number 550-141-797/0798 11 U niv ersal Control Syst em – Pr opane gas VII P arts list - Canadian boilers Figure 6 Canadian parts drawing Ref. No. Description Size Vendor/Part Number* 1 Main flame sensor Hone y well 392956 Main burner with p ilot bracket Main flame sensor bracket 1" Kinco-Balon 500 1 ¼" K inco-Balon 600 1" Ho[...]

  • Page 11

    P art Number 550-141-797/0798 12 LGB -6 to LGB -23 Series 2 – Control Su pplement W eil-McLain 500 Blaine Street Michigan City , IN 46360-2388 http://www .weil-mclain.com[...]