Weil-McLain LGB-6 Series Control Supplement
Lgb series gas–fired boiler universal control system
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Also See for LGB-6 Series:
- User manual (36 pages) ,
- Manual (36 pages) ,
- Brochure & specs (13 pages)
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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
to
LGB-6
LGB-23
Universal Control System
U.S. and Canada
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
-
Propane gas
Series 2
Contents
I. New installation ........... 2
II. Existing installation ..... 4
III. Gas piping ..................... 5
IV. Wiring ............................ 5
Sequence of operation ..... 8
Wiring procedure .............. 8
VI. Parts list - U.S. ........... 10
VII.Parts list - Canadian ... 11
Part Number 550-141-797/0798
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Summary of Contents for Weil-McLain LGB-6 Series
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Page 1: Table Of Contents
Gas–fired boiler Control Supplement LGB-6 LGB-23 – Propane gas Series 2 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 .... -
Page 2: New Installation
LGB-6 to LGB-23 Series 2 – Control Supplement 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. - Page 3 Universal Control System – Propane gas 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“...
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Page 4: Existing 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 5: Gas Piping
Universal Control System – Propane gas 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. - Page 6 LGB-6 to LGB-23 Series 2 – Control Supplement Universal Control System – Propane gas Figure 3 Wiring diagram Part Number 550-141-797/0798 Part Number 550-141-797/0798...
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Page 7: Sequence Of Operation
LGB-6 to LGB-23 Series 2 – Control Supplement 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. -
Page 8: Operating Instructions
Universal Control System – Propane gas 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. - Page 9 Pilot tubing, alum. ¼ O.D. x .032-20" long Pilot tubing, alum. ¼ O.D. x .032-60" long Available at Local Supply House Pressure switch tubing, alum. ¼ O.D. x .032-100" long *Contact local Weil-McLain distributor/agent for current replacement part and order number. Part Number 550-141-797/0798...
- Page 10 Available at Local Supply House Pressure switch tubing, alum. ¼ O.D. x .032-100" long 1" Watts FBV3-06 Firing valve 1 ¼" Watts FBV3-07 1 ½" Watts FBV3-08 *Contact local Weil-McLain distributor/agent for current replacement part and order number. Part Number 550-141-797/0798...
- Page 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 Part Number 550-141-797/0798...