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Weil-McLain LGB-4 Quick Start Manual

Gas–fired boiler
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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.
LG
LG B B B B B
LG
LG
LG
Control Supplement
Control Supplement
Control Supplement
Control Supplement
Control Supplement
LGB
LGB
-4
-4
LGB
LGB
LGB
LGB-4
LGB
-4
-4
LGB
LGB-5
LGB
&
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.
Control Supplement must only be used by a qualified installer/service
technician. Read all instructions before installing. Failure to follow all
instructions in proper order can cause severe personal injury, death or
substantial property damage.
Gas-fired boiler
-5
-5
-5
-5
- Propane gas
Series 2
Contents
Installation ....................... 2
Gas piping ......................... 3
Wiring ............................... 4
Parts ................................. 8
) ... 2
Refer to
LGB • Installation •
Start-Up • Service •
Parts Manual
for additional informatio
Part Number 550-141-919/0304

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Summary of Contents for Weil-McLain LGB-4

  • Page 1: Table Of Contents

    LG B B B B B Gas–fired boiler Control Supplement Control Supplement Control Supplement Control Supplement Control Supplement LGB-4 LGB-5 & – Propane gas Series 2 Universal Control System Contents Installation ....... 2 Conversion ( ) ... 2 Natural/Propane Gas piping ......3 Wiring .......

  • Page 2: Installation

    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.

  • Page 3: Gas Piping

    LGB-4 -4 & 5 5 5 5 5 • • • Control Supplement Propane Figure 1 Pilot burner assembly Table 1 Pilot and flame sensor locations Electronic Standing Boiler pilot pilot Propane model burner * burner * carton LGB-4 4 and 5...

  • Page 4: Wiring

    -4 & 5 5 5 5 5 LGB-4 • • • Control Supplement Propane Wiring Part Number 550-141-919/0304...
  • Page 5 -4 & 5 5 5 5 5 LGB-4 • • • Control Supplement Propane For your safety, turn off power supply before making Figure 2 Wiring diagram electrical connections to avoid possible electrical shock hazard. Label all wires prior to disconnection when servicing controls.

  • Page 6: Operating Instructions

    LGB-4 -4 & 5 5 5 5 5 • • • Control Supplement Propane 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 the Pilot Switch Box.

  • Page 7: Verification Testing

    LGB-4 -4 & 5 5 5 5 5 • • • Control Supplement Propane 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.

  • Page 8: Parts

    LGB-4 -4 & 5 5 5 5 5 • • • Control Supplement Propane Parts list Figure 3 Control and gas components Weil-McLain 500 Blaine Street Michigan City, IN 46360-2388 http://www.weil-mclain.com Part Number 550-141-919/0304...

This manual is also suitable for:

Lgb-5