LGB Commercial Gas Boiler Series 2

Features

Short draw rods permit faster, easier assembly of boiler sections.

Includes factory-assembled base and burners, and simplified piping for quick and easy installation.

Compact design allows for more piping and venting headroom.

The highest efficiency commercial cast iron atmospheric gas boiler available by Weil-McLain.

Built-in air separator diverts air to the expansion tank.

Gas natural draft water and steam boiler with cast iron sections.

Certified ENERGY STAR® and heat pump ready, this high-efficiency boiler delivers powerful, eco-friendly performance while keeping energy costs low.

MODEL	INPUT MAXIMUM (MBH)	INPUT MINIMUM (MBH)	GROSS WATER OUTPUT (MBH)	GROSS STEAM OUTPUT (MBH)	NET STEAM (SQ. FT.)	NET STEAM (MBH)	NET WATER (MBH)	FLUE OUTLET DIAMETER (IN.)	BOILER WATER/STEAM CONTENT (GALLONS)	APPROX. SHIPPING WEIGHT (LBS.)
LGB-10	1,170	1,170	950	934	2,918	701	826	16	91.2	2,800
LGB-11	1,300	1,300	1,057	1,039	3,246	779	919	16	100.4	3,105
LGB-12	1,430	1,430	1,165	1,144	3,576	858	1,013	16	109.5	3,365
LGB-13	1,560	1,560	1,273	1,239	3,868	929	1,107	16	118.6	3,785
LGB-14	1,690	1,690	1,381	1,344	4,228	1,015	1,201	16	127.7	4,085
LGB-15	1,820	1,820	1,489	1,449	4,592	1,102	1,295	16	136.9	4,355
LGB-16	1,950	1,950	1,597	1,552	4,950	1,188	1,389	17	146	4,725
LGB-17	2,080	2,080	1,708	1,658	5,316	1,276	1,485	17	155.1	4,975
LGB-18	2,210	2,210	1,817	1,764	5,682	1,364	1,580	18	164.2	5,270
LGB-19	2,340	2,340	1,926	1,867	6,034	1,448	1,675	18	173.4	5,540
LGB-20	2,470	2,470	2,035	1,974	6,384	1,533	1,770	19	182.5	5,820
LGB-21	2,600	2,600	2,207	2,077	6,720	1,613	1,919	19	191.6	6,080
LGB-22	2,730	2,730	2,318	2,184	7,065	1,696	2,016	19	201.2	6,365
LGB-23	2,860	2,860	2,428	2,288	7,402	1,776	2,111	20	209.8	6,625
LGB-4	400	400	322	312	975	234	280	10	36.5	1,185
LGB-5	520	520	419	409	1,279	307	364	12	45.6	1,455
LGB-6	650	650	523	514	1,607	386	455	12	54.7	1,725
LGB-7	780	780	628	619	1,936	464	546	12	63.9	2,005
LGB-8	910	910	737	724	2,264	543	614	14	73	2,290
LGB-9	1,040	1,040	843	829	2,591	622	733	14	82.1	2,560

LGB 4-5 UCS Control Supplement (Propane) LGB 4-5 UCS Nat Control Supplement LGB 5 CSD-1 Control Supplement (Propane) LGB 5 CSD-1 Nat Control Supplement LGB 6-20 CSD-1 Control Supplement (Propane) LGB 6-20 CSD-1 Nat Control Supplement LGB 6-23 Control Supplement (Propane) LGB 6-23 Control Supplement (Propane) – French LGB 6-23 UCS Nat Control Supplement LGB 6-23 UCS Nat Control Supplement – French LGB Boiler Manual LGB Boiler Manual – French LGB IRI WMBC-1A Control Supplement LGB IRI WMBC-2A Control Supplement LGB Jacket Instructions LGB User Manual LGB User Manual – French LGB WFFP Control Supplement LGB Suggested Specs LGB Suggested Specs – French

LGB Brochure Hybrid Boiler System – Best of Both Worlds LGB Case Study – Mendota Apartments

LGB BIM-Revit

LGB-10S Technical Drawing (DWG) LGB-10W Technical Drawing (DWG) LGB-11S Technical Drawing (DWG) LGB-11W Technical Drawing (DWG) LGB-12S Technical Drawing (DWG) LGB-12W Technical Drawing (DWG) LGB-13S Technical Drawing (DWG) LGB-13W Technical Drawing (DWG) LGB-14S Technical Drawing (DWG) LGB-14W Technical Drawing (DWG) LGB-15S Technical Drawing (DWG) LGB-15W Technical Drawing (DWG) LGB-16S Technical Drawing (DWG) LGB-16W Technical Drawing (DWG) LGB-17S Technical Drawing (DWG) LGB-17W Technical Drawing (DWG) LGB-18S Technical Drawing (DWG) LGB-18W Technical Drawing (DWG) LGB-19S Technical Drawing (DWG) LGB-19W Technical Drawing (DWG) LGB-20S Technical Drawing (DWG) LGB-20W Technical Drawing (DWG) LGB-21S Technical Drawing (DWG) LGB-21W Technical Drawing (DWG) LGB-22S Technical Drawing (DWG) LGB-22W Technical Drawing (DWG) LGB-23S Technical Drawing (DWG) LGB-23W Technical Drawing (DWG) LGB-6S Technical Drawing (DWG) LGB-6W Technical Drawing (DWG) LGB-7S Technical Drawing (DWG) LGB-7W Technical Drawing (DWG) LGB-8S Technical Drawing (DWG) LGB-8W Technical Drawing (DWG) LGB-9S Technical Drawing (DWG) LGB-9W Technical Drawing (DWG)