Weil-McLain SERIES 2 LGB-16 user manual

User manual for the device Weil-McLain SERIES 2 LGB-16

Device: Weil-McLain SERIES 2 LGB-16
Category: Boiler
Manufacturer: Weil-McLain
Size: 1.04 MB
Added : 10/27/2013
Number of pages: 11
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Abstracts of contents
Summary of the content on the page No. 1

Gas–fired boiler
LGB
Control Supplement
Series 2 – Propane gas
Universal Control System
U.S. and Canada
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. ........... 10
VII.Parts list – Canadian ... 11
Indicates presence of hazards that can cause severe personal injury,

Summary of the content on the page No. 2

LGB-6 to LGB-23 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 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 for electronic pilot burner (UCS), standing pilot burner (Q327) and fl

Summary of the content on the page No. 3

Universal Control System – Propane gas I New installation – continued 10-32 x 5/16“ Igniter UCS Pilot Figure 1 Machine Screws(2) Burner Sensor Pilot burner assembly, typical Locating Slot Ground Leadwire: Connect to Pilot Proving Module 24 V (GND) terminal Pilot Mounting Bracket Burner Support Bar 10-32 x 1/4“ Pilot Line Tubing Machine Screws (2) Sensor Lead Main Burner (with Pilot Mounting Compression Bracket) Igniter Lead LGB-A84-B Union 6-32 x 5/16“ Type ”F” Self Tapping Screws(2) Figure 2 Fl

Summary of the content on the page No. 4

LGB-6 to LGB-23 Series 2 – Control Supplement II Existing installation Conversion from natural gas to propane gas This conversion is to be installed by a Weil-McLain distributor or other qualified agency in accordance with the manufacturer’s instructions and all codes and requirements of the authority having jurisdiction. Failure to follow instructions could result in serious injury or property damage. The qualified agency performing this work assumes responsibility for this conversion. For your

Summary of the content on the page No. 5

Universal Control System – Propane gas III 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 pressure to gas valve exceeds 13” W.C., install 100% lock-up gas pressure regulator upstream of hand valve. 2. Remove gas supply knockout disc from jacket panel. 3. Follow good piping practices. 4. Pipe joint compound (pipe dope) must be resistant to corrosive action of liquefied petrol

Summary of the content on the page No. 6

LGB-6 to LGB-23 Series 2 – Control Supplement Universal Control System – Propane gas Figure 3 Wiring diagram 6 Part Number 550-141-797/0798 Part Number 550-141-797/0798 7

Summary of the content on the page No. 7

LGB-6 to LGB-23 Series 2 – Control Supplement IV Wiring – continued Sequence of operation 1. Operating control begins start-up sequence. a. Limit control contacts are closed. 2. Pilot-proving module energized. On failure to sense pilot flame or main flame, control will wait 5 minutes then retry for ignition. a. Pilot solenoid opens. b. Pilot ignition spark begins. c. Pilot ignites. d. Pilot proves. 3. Main flame-proving module energized from pilot-proving module. a. Secondary gas valve opens. b.

Summary of the content on the page No. 8

Universal Control System – Propane gas V Operating instructions 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, smel

Summary of the content on the page No. 9

LGB-6 to LGB-23 Series 2 – Control Supplement VI Parts list - U.S. boilers Figure 5 U.S. parts drawing Ref. No. Description Size Vendor/Part Number Weil-McLain Part Number 1 Main flame sensor Honeywell 392956 511-724-274 Main burner with pilot bracket Weil-McLain 512-200-055 2 Main flame sensor bracket Weil-McLain 423-300-420 1" Kinco-Balon 500 511-246-325 3 Manual main shut-off valve 1 ¼" Kinco-Balon 600 511-246-330 1" Honeywell V8943A1003 511-044-191 4 Secondary gas valve 1 ¼" Honeywell V8943A

Summary of the content on the page No. 10

Universal Control System – Propane gas VII Parts list - Canadian boilers Figure 6 Canadian parts drawing Ref. No. Description Size Vendor/Part Number* 1 Main flame sensor Honeywell 392956 Main burner with pilot bracket 2 Weil-McLain Main flame sensor bracket 1" Kinco-Balon 500 3 Manual main shut-off valve 1 ¼" Kinco-Balon 600 1" Honeywell V8943A1003 4 Secondary gas valve 1 ¼" Honeywell V8943A1111 1" Honeywell V8944N1053 5 Main gas valve 1 ¼" Honeywell V8944N1061 Pilot burner, standing Honeywell

Summary of the content on the page No. 11

LGB-6 to LGB-23 Series 2 – Control Supplement Weil-McLain 500 Blaine Street Michigan City, IN 46360-2388 http://www.weil-mclain.com 12 Part Number 550-141-797/0798


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