The Buderus G115 is a discontinued oil-fired, low-temperature cast iron boiler. The G115 had a heating capacity of 74,000, 98,000, and 120,000 BTU’s, depending on the model. Boiler water content ranged from 8.7 to 12.9 gallons, and the oil firing rate ranged from .60 to 1.0 GPH. The boiler featured an insulated jacket to reduce stand-by heat loss, and an optional Logamatic control managed most control functions of the heating system.
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