Weil McLain LGB21, 2600 MBH Input, 5" W.C. - Commercial Gas Boiler - Steam or Water

2600 MBH Input, 5" W.C. - Commercial Gas Boiler - Steam or Water 85.1% Combustion efficiency saves energy. The LGB is the highest efficiency cast iron atmospheric gas boiler available. Exceeds efficiency requirements of ASHRAE 90.1 Cast iron sections for corrosion resistance and long life Compact design saves valuable space...only 50-3/8" high, allowing more headroom for piping and venting Patented section sealing method, short draw rods and sealing rope section speed assembly to reduce installation time Extra-large 9" top port opening forms an internal header for better water circulation. Large steaming area assures rapid generation of dry steam AGA design certified by Air-Conditioning, Heating and Refrigeration Institute (AHRI) for natural and propane gas Factory-assembled base and burners reduce installation time Simplified piping. The largest LGB steam boiler requires only two risers Built-in air separator in water boilers. Air is diverted to the expansions tank through a 1" tappi