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BMK SERIES TECHNICAL DATA SHEET Benchmark 750 - 6000 Condensing Hydronic Boilers The AERCO Benchmark (BMK) Water Boiler is designed for condensing application in any closed loop hydronic system. It delivers unmatched burner modulation to match energy input directly to fluctuating system loads to yield the highest possible seasonal efficiencies. And no other product packs as much capacity into such a small footprint. To minimize emissions, the BMK Series is fitted with a low NOx burner whose emissions will meet the most stringent NOx and CO requirements. The fully modulating burner also maintains AERCO standards for energy efficiency, longevity, reliability and construction quality. The BMK Series comes standard with AERCO’s Patent Pending, Oxygen Level (O2) monitoring system. This monitoring system, designed to display the O2 level directly on the unit in real time, can also be remotely monitored via Modbus giving the customer the ability to measure the emissions level and fuel economy of the boiler without traditional combustion calibration devices. The BMK boilers can be used as an individual unit or in modular arrangements and offers selectable modes of operation. In addition to controlling the boiler according to a constant set point, indoor/outdoor reset schedule or 4-20mA signal, one or more units can be integrated via Modbus communications protocol. For boiler plants ranging from 2-8 boilers, AERCO’S built-in Boiler Sequencing Technology (BST)* can be utilized. For heating plants greater than 8 boilers, AERCO’s ACS (AERCO Control System) provides the right solution. Likewise, Benchmark systems can be easily integrated with a facility-wide Energy Management or Building Automation System. Natural Gas, Propane, or Dual Fuel (model dependant) 20:1 Turndown Ratio (5%) depending on capacity Oxygen Level (O2) Monitoring Standard Stainless Steel Fire Tube heat exchanger Capable of variable primary flow Installations NOx Emissions capable of 9PPM or less @ all firing rates *depending on capacity Compact Footprint Precise Temperature Control On-board Boiler Sequencing Technology (BST) Ducted Combustion Air Capable Easy Open Access for Service Acceptable vent materials AL29-4C, Polypropylene, PVC, cPVC (model dependant) Reliable Quiet Operation Controls Options • Constant Setpoint • Indoor/ Outdoor Reset • Remote Setpoint •

RATINGS: Model Number Efficiency Range Max output dependent upon application - See efficiency curves **See separate BMK6000 Technical Data Sheet for additional BMK6000 details a DIMENSIONS (INCHES): **See separate BMK6000 Technical Data Sheet for additional BMK6000 dimension details ***BMK750/1000 Feature Dual Inlet Connections

ASME Sect.IV ASME Sect.IV ASME Sect.IV ASME Sect.IV ASME Sect.IV ASME Sect.IV ASME Sect.IV Water Connections (Flanged) Water Pressure Drop Natural Gas, Propane, Dual Fuel Natural Gas, Propane, Dual Fuel Natural Gas, Propane, Dual Fuel Natural Gas, Propane, Dual Fuel Natural Gas, Dual Fuel Boiler Category Gas Connections (NPT) Max. Gas Pressure Min. Gas Pressure Max. Allowed Working Pressure Water Volume Gallons Vent/Air Intake Connections Vent Materials NOx Emissions <9ppm Capability* Temperature Control Range Ambient Temperature Range Standard Listings & Approvals FM Compliant or Factory...

Specifications subject to change without prior notice. Consult website or contact AERCO. BMK SERIES 03/2014 NY WATER HEATERS • BOILERS • PARTS & ACCESSORIES AERCO INTERNATIONAL, INC. 100 ORITANI DR. • BLAUVELT, NY 10913 (845) 580-8000 • FAX (845) 580-8090 www.aerco.com