Buderus Commercial Condensing Gas Boiler. 264 - 880,700 BTU.

COMMERCIAL CONDENSING GAS BOILERS

MODEL
GB312 Series

DESCRIPTION
The GB312 series are high performance, compact, condensing commercial boilers providing efficiencies up to 93.4%. These boilers are very well suited for large residential applications, multi-unit apartment dwellings, and light to moderate commercial applications. The GB312 is a fully modulating boiler designed for easy installation, simple service and years of trouble free operation. These boilers feature an energy management system (EMS) which uses sensors to monitor status of the boiler and the entire heating system. If the system values deviate from the set values, the system issues a fault or service message. Additional features include variable speed combustion fan, insulated high output aluminum heat exchanger,oversized clean-outs for easy maintenance, BC10 & AM10 controls with digital service diagnostic & status display, integrated condensate neutralizing system and a modulating pre-mix burner.

Optional accessories include upgrading to a logomatic control, 4000 series control for cascading multiple boilers & CSD-1 installation kit (CSD-1 controls normally required in most jurisdictions, purchased separately). Installation features include vertical or sidewall venting up to 100' equivalent length, direct vent, or through the roof venting, approved for 1 pipe or 2 pipe venting. Venting must be AL29-4C stainless steel, or CPVC schedule 80. Boiler shipped with temperature/pressure gauge, pressure relief valve, supply & return mating fittings, and check valve. Low water cutoff not included (purchased separately). These boilers are extremely lightweight compared to cast iron commercial boilers and are compact to fit into existing mechanical rooms. Anti-freeze for use with aluminum heat exchangers is required for use with these boilers.

WARRANTY
• 5 Year warranty on heat exchanger • 2 Year parts warranty

FOOT NOTES
** Intake air piping must equate to exhaust flue diameter and reduce at connection to boiler