LGB

Atmospheric Gas Boiler (Water or Steam)

Models

LGB-4, LGB-5, LGB-6, LGB-8, LGB-9, LGB-10, LGB-11, LGB-12, LGB-13, LGB-14, LGB-15, LGB-16, LGB-17, LGB-18, LGB-19, LGB-20, LGB-21, LGB-22, LGB-23, LGB-7

Key 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
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

Efficiency Rating Chart

Model	A.G.A. Input (MBH)	DOE Heating Capacity (MBH)	Net I=B=R Ratings: Steam (Sq. Ft.)	Net I=B=R Ratings: Steam (MBH)	Net I=B=R Ratings: Water (MBH)	Min. Chimney Size
LGB-4	400	324	1013	243	282	10
LGB-5	520	421	1317	316	366	12
LGB-6	650	527	1645	395	458	12
LGB-7	780	632	1975	474	549	12
LGB-8	910	737	2305	553	641	14
LGB-9	1040	842	2635	632	733	14
LGB-10	1170	948	2965	711	824	16
LGB-11	1300	1053	3290	790	916	16
LGB-12	1430	1158	3620	869	1007	16
LGB-13	1560	1264	3955	949	1099	16
LGB-14	1690	1369	4313	1035	1190	16
LGB-15	1820	1474	4679	1123	1282	17
LGB-17	2080	1685	5408	1298	1465	17
LGB-18	2210	1790	5775	1386	1557	18
LGB-19	2340	1895	6125	1470	1648	18
LGB-20	2470	2001	6471	1553	1740	19
LGB-21	2600	2106	6813	1635	1831	19
LGB-22	2730	2211	7155	1717	1923	19
LGB-23	2860	2317	7496	1799	2014	20
LGB-16	1950	1580	5046	1211	1373	17