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These terms are used throughout this
manual to bring attention to the
presence of hazards of various risk
levels or to important information
concerning the life of the product.
LGB
Control Supplement
LGB-6
LGB
LGB
-6
-6
-6
LGB
LGB
LGB-23
LGB
LGB
-6
LGB
LGB
to
to
to
to
to
Universal Control System
Indicates presence of hazards that can cause severe personal injury, death or
substantial property damage.
Indicates special instructions on installation, operation or maintenance that
are important but not related to personal injury or property damage.
This Control Supplement must only be used by a qualified installer/service
technician. Read these instructions completely before beginning the
installation. Failure to follow these instructions can cause severe personal
injury, death or substantial property damage.
Gas-fired boiler
-23
-23
-23
-23
- Natural gas
Series 2
Contents
I. Installation ..................... 2
II. Gas piping ...................... 4
III. Wiring ............................ 5
V. Verification testing ..... 10
VI.Parts list ....................... 11
Sequence of operation ....... 5
Wiring procedure ............... 8
Part Number 550-141-916/0304
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Summary of Contents for Weil-McLain LGB LGB-23
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Page 1: Table Of Contents
Control Supplement LGB-6 Universal Control System These terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product. LGB-23 Series 2 Indicates presence of hazards that can cause severe personal injury, death or substantial property damage. -
Page 2: Installation
LGB-6 to LGB-23 Installation 1. Assemble pilot burner and flame sensor to main burners with pilot brackets. See Figures 1 2. Reinstall burner assemblies. See Table 1, below for pilot burner and flame sensor locations. 3. Install gas controls and ignition control panel as shown in Table 2, below and Figure 5 on 4. - Page 3 Universal Control System – Natural gas Installation Figure 1 Pilot burner assembly, typical Figure 2 Main flame sensor assembly Part Number 550-141-916/0304 – continued...
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Page 4: Gas Piping
LGB-6 to LGB-23 Gas piping 1. Size gas piping considering — 2. Size natural gas piping from Table 3, below. Size piping to provide proper inlet pressure to 3. Remove gas supply knockout disc from jacket panel. 4. Follow good piping practices. 5. -
Page 5: Wiring
Universal Control System – Natural gas Wiring 1. All wiring must be installed in accordance with the requirements of the National Electrical 2. The boiler must be electrically grounded in accordance with the National Electrical Code, 3. Canadian installations must conform to CSA C22.1 Canadian Electrical Code Part 1 and 4. - Page 6 LGB-6 to LGB-23 Series 2 – Control Supplement Wiring – continued Part Number 550-141-916/0304...
- Page 7 Universal Control System – Natural gas Figure 3 Wiring diagram Part Number 550-141-916/0304...
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Page 8: Wiring Procedure
LGB-6 to LGB-23 Wiring Wiring Procedure 1. Determine right or left electrical supply wiring. 2. Attach electrical junction box(es) to inside jacket end panel. Screws and nuts are provided. 3. Attach control transformer(s) to junction box(es). 4. Drill 1/8" hole in interior jacket panel midway between ignition control panel and left jacket 5. -
Page 9: Iv.operating Instructions
Universal Control System – Natural gas Operating instructions Part Number 550-141-916/0304... -
Page 10: Verification Testing
LGB-6 to LGB-23 Verification testing Before starting boiler for the first time and at least annually (during annual inspection and start-up), follow the procedures below to verify boiler controls are operating correctly and that automatic gas valve properly shuts off gas flow. Failure to verify boiler operation could result in severe personal injury, death or substantial property damage. -
Page 11: Vi.parts List
Universal Control System – Natural gas Parts list – continued Figure 5 Parts drawing Part Number 550-141-916/0304... - Page 12 LGB-6 to LGB-23 Series 2 – Control Supplement Weil-McLain 500 Blaine Street Michigan City, IN 46360-2388 http://www.weil-mclain.com Part Number 550-141-916/0304...