Benchmark Standard 2500 and 3000

For more than twenty years, AERCO's Benchmark commercial condensing boilers have set the bar for high efficiency and have been considered the gold standard in hydronic heating.The Benchmark Standard 2500 and 3000 boilers provide reliable space heating for a wide variety of applications while delivering the highest burner turndown and seasonal efficiencies in the industry. Easy to install and service, the Benchmark is a powerful boiler in a compact footprint durably built with a 439 stainless steel heat exchanger for longer product life.

Proper schedule detail with notes is crucial to ensure you get the product you want. AERCO is pleased to offer pre-populated autoCAD schedules for all products.

Click here for autoCAD schedules.

Features and Benefits

To minimize emissions, the Benchmark 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.

Benchmark 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 Management Sequencer* can be utilized. For heating plants greater than 8 boilers, the 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.

Even the largest hydronic projects will be able to cost-effectively leverage the fuel savings and operating reliability of a condensing, fully modulating boiler backed by a market-proven design.

  • Unmatched 15:1 turndown and low NOx
  • Durable 439 stainless steel firetube heat exchanger
  • Low operating, maintenance and installation costs
  • Easy serviceability
  • Up to 99% efficiency
  • Low NOx emissions 20 ppm or less at all firing rates
  • Capable of variable primary flow installations
    Venting versatility with AL29-4C or Polypropylene
  • Compact footprint
  • Standard controls package

Unmatched 15:1 Turndown with Low NOx Emissions

As a condensing boiler, the thermal efficiency of the BMK3000 increases when applied in a system that leverages cold return water temperatures. But it's the unit's unmatched 15:1 turndown that really maximizes operating efficiency and seasonal fuel savings.

From 2000 MBH to its full fire input capacity of 3000 MBH., the BMK3000 precisely matches fluctuating loads. This incredible range of operation minimizes boiler cycling and eliminates wasteful temperature overshoot. And the operating efficiency of the BMK3000 boiler actually increases as the load decreases. In simple terms, at its lowest firing rates (or BTU/hr. inputs), the unit's heat exchanger becomes greatly oversized in proportion to the load - allowing much greater thermal transfer to take place. The means that the BMK3000 saves the most energy during part load operations that characterize the majority of the heating season.

The Benchmark Series consistently delivers <30ppm NOx at all firing levels making it ideal for environmentally-friendly projects. T


Compact, Easy-to-Apply Design

Measuring only 78" high x 28" wide x 56" deep, the BMK3000 fits easily through a standard size doorway and occupies a very small footprint. It fits the most challenging projects as easily as it fits the smallest mechanical rooms.

The BMK3000 boiler supports sealed combustion, ceiling/sidewall venting and low gas pressure applications. Ideal in low flow applications, the unit operates with a small water side pressure drop and can withstand no flow conditions without damaging the heat exchanger.

From a controls standpoint, the unit's C-More control system can be integrated directly into a facility-wide Building Automation System via Modbus and is fully compatible with AERCO's Boiler Management System II (BMS II) for multiple unit installations.


Performance-Proven Design

Best of all, the BMK3000 employs the same parts and technologies that have been performance proven as part of the Benchmark 2.0 boiler line. By rearranging interior components, we've increased the unit's capacity by a million BTU/hr. -- but we've only added 8" to the depth of the original product footprint.

The new design employs two, identical, stainless steel, heat exchangers to deliver the extra capacity. Importantly, this is the same heat exchanger design that has been available with the BMK2.0LN for nearly ten years -- same material, same design, same welding, etc. Whereas, competitive product designs often employ primary and secondary heat exchangers made of different materials to cut corners - we've doubled up on quality with the BMK3000.


Standard Controls Package

The AERCO C-More™ Control Package supports constant set point, remote set point and/or outdoor reset schedule for individual boiler operation. Offers step-by-step diagnostic menus and status displays to help users set controls and check faults. More than 40 distinct messages, written in easy-to-understand language, convey subsystem status throughout the start-up sequence and during operation. The flash-upgradeable platform can be remotely monitored, controlled and upgraded via Modbus protocol using the RS-232 or RS-485 connection. The system provides failsafe and independent operation in the event of external building control system failures.

Options and Accessories

ACCESSORIES

AERCO Condensate Neutralizer Kit
Ideal for neutralizing condensate from condensing boilers and furnaces operating on natural gas or propane.

AERCO Control System (ACS)
Optional multiple unit controller recommended for installations of eight or more boilers to maximize operating efficiency.

BelimoF6... HDU Series 2-way butterfly valves
Designed to meet the needs of HVAC and commercial application requiring bubble tight shut-off for liquids. Typical applications include boiler isolation, chiller isolation, cooling tower isolation, change-over systems, air handler coil control, bypass and process control applications.

Communications Gateway
Optional accessory supports boiler or BMS integration with BACnet, LonWorks and N2 systems.

Integration Panel
Allows for automatic BST Master-function transfer to the next available unit in the event the original Master experiences a control panel or communication failure.

Sentinel Products
Compatible with all materials found in a hydronic loop, these chemicals offer overall protection of a heating system from sludge, scale, corrosion, and freeze conditions.

Secondary Low Water Cut-Off (LWCO)
Where required by building code. Secondary LWCO must be installed external to boiler.

Technical Documents

Application and Sizing Guidelines

Benchmark All Models Boiler Application Guide (TAG-0019) (GF-2070)

pdf 4.74 MB | February 17, 2017

Benchmark Electrical Power Wiring Guide (TAG-0048) (GF-2060)

pdf 437.98 KB | April 19, 2018

Benchmark Series Pre-Installation Venting & Combustion Air (TAG-0022) (GF-2050)

pdf 2.34 MB | September 14, 2018

Gas Components & Supply Design Guide (GF-2030, TAG-0047)

pdf 787.74 KB | August 14, 2018

Certifications/Approvals

BMK 2500 AHRI Certification

pdf 470.21 KB | December 14, 2015

BMK 3000 AHRI Certification

pdf 470.21 KB | December 14, 2015

Controls

BST Header Temperature Sensor (Direct Connect) (SD-A-1017)

pdf 38.22 KB | December 14, 2015

BST Header Temperature Sensor (Direct Connect) (SD-A-1017)

dwg 170.84 KB | March 10, 2016

BST Outdoor Temperature Sensor (Direct Connect) (SD-A-1018)

pdf 23.14 KB | December 14, 2015

BST Outdoor Temperature Sensor (Direct Connect) (SD-A-1018)

dwg 3.54 MB | March 10, 2016

Modbus Header Temperature Sensor-Kit 24444-1 (TID-0133)

pdf 184.84 KB | January 18, 2016

Up to 12 C-More controllers & BMS II

clipping 1.38 MB | December 14, 2015

Installation and Piping Drawings

Benchmark 2500 and 3000 Anchor Bolt Location (SD-A-896)

dwg 170.25 KB | July 17, 2017

Benchmark 2500 and 3000 Anchor Bolt Location (SD-A-896)

pdf 25.55 KB | July 17, 2017

BMK 1500-3000 Single Unit Installation w/ Dual Return (SD-A-1090)

dwg 917.65 KB | February 17, 2017

BMK 1500-3000 Single Unit Installation w/ Dual Return (SD-A-1090)

pdf 118.7 KB | February 17, 2017

BMK 2500, BMK 3000 Multi Unit Installation-Primary Secondary (SD-A-960)

dwg 1.92 MB | March 15, 2017

BMK 2500, BMK 3000 Multi Unit Installation-Primary Secondary (SD-A-960)

pdf 232.62 KB | March 15, 2017

BMK Series Clearance for Combination Plant (SD-A-874)

dwg 129.14 KB | July 14, 2016

BMK Series Clearance for Combination Plant (SD-A-874)

pdf 44.5 KB | July 14, 2016

BMKs Zero Side Clearance (2 Pairs) with ACS, 2 Port Buffer Tank and SmartPlate (SD-A-963)

pdf 350.63 KB | December 14, 2015

BMKs Zero Side Clearance (2 Pairs) with ACS, 2 Port Buffer Tank and SmartPlate (SD-A-963)

dwg 5.15 MB | December 14, 2015

Clearance for Side-by-Side Unit Placement (SD-A-898)

dwg 232.97 KB | February 17, 2017

Clearance for Side-by-Side Unit Placement (SD-A-898)

pdf 68.61 KB | February 17, 2017

Clearance for Standalone Unit Placement (SD-A-897)

dwg 246.63 KB | February 17, 2017

Clearance for Standalone Unit Placement (SD-A-897)

pdf 57.27 KB | February 17, 2017

DHW Priority (ACS Only) BMK/SmartPlate/Buffer Tank Applications (SD-A-916)

dwg 3.63 MB | March 15, 2017

DHW Priority (ACS Only) BMK/SmartPlate/Buffer Tank Applications (SD-A-916)

pdf 411.3 KB | March 15, 2017

Muli-Zero Side Clearance (2-Pairs)-Primary Variable Flow (SD-A-958)

pdf 230.89 KB | December 14, 2015

Muli-Zero Side Clearance (2-Pairs)-Primary Variable Flow (SD-A-958)

dwg 1.37 MB | December 14, 2015

Multi Dual Return With SmartPlate Tank Install (SD-A-1088)

pdf 343.89 KB | December 14, 2015

Multi Dual Return With SmartPlate Tank Install (SD-A-1088)

dwg 3.6 MB | December 14, 2015

Primary Secondary Single Unit Installation (SD-A-959)

dwg 1 MB | February 17, 2017

Primary Secondary Single Unit Installation (SD-A-959)

pdf 154.18 KB | February 17, 2017

Single Unit Installation with ACS and Indirect Storage Heater-Primary Variable Flow (SD-A-961)

pdf 194.36 KB | December 14, 2015

Single Unit Installation with ACS and Indirect Storage Heater-Primary Variable Flow (SD-A-961)

dwg 1.95 MB | December 14, 2015

Single Unit Installation-Primary Variable Flow (SD-A-957)

pdf 120.55 KB | December 14, 2015

Single Unit Installation-Primary Variable Flow (SD-A-957)

dwg 475.41 KB | December 14, 2015

Literature and Performance Data

AERCO Benchmark Brochure

pdf 6.17 MB | August 14, 2018

AERCO Benchmark Metric Brochure

pdf 6.2 MB | August 14, 2018

AERCO Benchmark Series Metric Technical Data Sheet

pdf 643.27 KB | September 18, 2018

AERCO Benchmark Series Technical Data Sheet

pdf 385.88 KB | September 18, 2018

AERCO C-More Technical Data Sheet

pdf 465.35 KB | December 21, 2017

AERCO's Packaged Systems

pdf 242.31 KB | May 9, 2016

Benchmark 2500 Efficiency Curve

pdf 14.2 KB | December 14, 2015

Benchmark 3000 Altitude Derate Factors (C302.5)

pdf 35.31 KB | December 14, 2015

Benchmark 3000 Efficiency Curve

pdf 328.12 KB | December 14, 2015

BMK 2500 / 3000 Water Side Pressure Drop

pdf 62.19 KB | December 14, 2015

BMK 3000 BTU Input vs Valve Position

pdf 58.18 KB | December 14, 2015

BMK3000 Dual Fuel- Natural Gas Input vs Valve Positions

pdf 33.42 KB | December 14, 2015

BMK3000 Dual Fuel- Propane Input vs Valve Positions

pdf 32.96 KB | December 14, 2015

Boiler Sequencing Technology (BST) Technical Data Sheet

pdf 118.85 KB | October 24, 2017

Integration Panel for BMK BST Technical Data Sheet

pdf 344.05 KB | December 21, 2017

Operation and Maintenance Manuals (O&M)

Benchmark 750-3000 Installation and Startup (OMM-0121) (GF-205)

pdf 5.43 MB | November 30, 2017

Benchmark 750-3000 Operation & Maintenance (OMM-0122) (GF-206)

pdf 13.92 MB | December 5, 2017

BMK2500DF-3000DF O&M Manual (OMM 0099) (GF-145)

pdf 9.17 MB | March 14, 2016

C-More Control Panel (GF-112) (OMM-0032)

pdf 2.65 MB | December 30, 2016

Operation and Maintenance Manuals (O&M) - Previous Versions

Benchmark 2500DF-3000DF Installation, Operation & Maintenance Manual

pdf 12.37 MB | November 18, 2016

Benchmark 2500DF-3000DF Installation, Operation & Maintenance Manual

pdf 16.57 MB | November 18, 2016

Operation and Maintenance Manuals (O&M) -- International

Benchmark 2500-3000 Chinese / English (OMM-0114) (GF-137-I)

pdf 10.39 MB | October 26, 2017

Benchmark 2500-3000 Chinese / English (OMM-0114) (GF-137-I)

pdf 7.82 MB | October 26, 2017

Benchmark 750-3000 G-17-0300 and up Installation Startup Korea (OMM-0127) (GF-205-K)

pdf 5.6 MB | November 30, 2017

Benchmark 750-3000 G-17-0300 and up Operation and Maintenance Korea (OMM-0128) (GF-206-K)

pdf 11.85 MB | December 5, 2017

Product and Component Drawings

Benchmark 2500 and 3000 Side Air Inlet Adapter (AP-A-921)

pdf 122.71 KB | May 30, 2018

Benchmark 2500, 3000 Dimensional Drawing (AP-A-915)

pdf 108.42 KB | May 4, 2017

Benchmark 2500, 3000 Dimensional Drawing (AP-A-915)

dwg 2.12 MB | May 4, 2017

Benchmark 2500/ 3000 Revit Drawing

zip 543.92 KB | August 28, 2018

BMK 3000 Bill of Materials/Parts List (PL-A-177)

pdf 897.04 KB | December 14, 2015

BMK 3000 Dual Fuel DBB Gas Train (PL-A-180)

pdf 186.21 KB | December 14, 2015

BMK 3000 Dual Fuel Gas Train (PL-A-177)

pdf 199.89 KB | December 14, 2015

PolyBall Condensate Trap Assembly 24441 (AP-A-1006)

pdf 62.53 KB | December 14, 2015

PolyBall Condensate Trap Assembly 24441 (AP-A-1006)

dwg 231.44 KB | July 15, 2016

Specifications and Schedules

AERCO Boiler Schedule Tool

xlsx 110.12 KB | August 15, 2018

Benchmark 750-6000 Boiler Schedule

pdf 433.75 KB | June 5, 2018

Benchmark 750-6000 Boiler Schedule

dwg 225.47 KB | June 5, 2018

BMK Standard Specification

doc 136.5 KB | May 4, 2018

Warranty

All Benchmark Limited Warranty

pdf 115.59 KB | September 4, 2018

Wiring

BMK 750-6000 Internal IO Box Wiring Diagram (SD-A-903)

dwg 201.67 KB | June 9, 2017

BMK 750-6000 Internal IO Box Wiring Diagram (SD-A-903)

pdf 53.23 KB | June 9, 2017

C-More Onboard Boiler Sequencing Tech Field Wiring Diagram 24VAC (SD-A-1010)

dwg 292.36 KB | February 17, 2017

C-More Onboard Boiler Sequencing Tech Field Wiring Diagram 24VAC (SD-A-1010)

pdf 151.98 KB | February 17, 2017

C-More Onboard Boiler Sequencing Tech Field Wiring Diagram 24VAC with Modbus Device (SD-A-1012)

dwg 201.04 KB | February 17, 2017

C-More Onboard Boiler Sequencing Tech Field Wiring Diagram 24VAC with Modbus Device (SD-A-1012)

pdf 145.5 KB | February 17, 2017

C-More Onboard Boiler Sequencing Tech with ProtoNode and BAS Field Wiring Diagram 24VAC (SD-A-1011)

dwg 392.12 KB | February 17, 2017

C-More Onboard Boiler Sequencing Tech with ProtoNode and BAS Field Wiring Diagram 24VAC (SD-A-1011)

pdf 184.93 KB | February 17, 2017

C-More Onboard Boiler Sequencing Tech with ProtoNode and BAS Field Wiring Diagram 24VAC Modbus Device (SD-A-1013)

dwg 288.29 KB | February 17, 2017

C-More Onboard Boiler Sequencing Tech with ProtoNode and BAS Field Wiring Diagram 24VAC Modbus Device (SD-A-1013)

pdf 194.24 KB | February 17, 2017

C-More Wiring Diagram BAS to C-More (SD-A-659)

pdf 30.17 KB | December 14, 2015

C-More Wiring Diagram BAS to C-More (SD-A-659)

dwg 245.24 KB | December 14, 2015

Secondary External Low Water Cut-Off - Associated Wiring Diagram (SD-A-623)

dwg 156.04 KB | July 15, 2016

Secondary External Low Water Cut-Off - Associated Wiring Diagram (SD-A-623)

pdf 55.21 KB | July 15, 2016

Case Studies

Title Market Products
Securing an Award-winning Solution for a Major Law Enforcement Complex Government and Military Benchmark Standard 2500 and 3000, Innovation 1060
A Rewarding Lesson In Energy-Efficient Economics for a California University Education Benchmark Standard 2500 and 3000, Innovation 1060
Boiler History Lesson Helps University Of North Texas Save Money And Energy Education Benchmark Standard 2500 and 3000, Innovation 1060