AERCO BMK 1000 - Manual (Page 7)

Benchmark 750/1000 Boiler Installation, Operation & Maintenance Manual
OMM-0082_0J AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 7 of 192
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Ph.: 800-526-0288 05/21/2014
FOREWORD
The AERCO Benchmark (BMK) 750 and 1000 MBH Boilers are modulating and condensing
units. They are a true industry advancement that meets the needs of today's energy and
environmental concerns. Designed for application in any closed loop hydronic system, the
Benchmark's modulating capability relates energy input directly to fluctuating system loads. The
maximum turn down ratios for the BMK 1000 and BMK 750 are 20:1 and 15:1, respectively.
Both BMK models provide extremely high efficiencies and make them ideally suited for modern
low temperature, as well as, conventional heating systems.
The Benchmark Models BMK 750 and BMK 1000 operate within the following input and output
ranges:
Input Range (BTU/hr.) Output Range (BTU/hr.)
Benchmark Model Minimum Maximum Minimum Maximum
BMK 750 50,000 750,000 47750 716,250
BMK 1000 50,000 1,000,000 48300 968,000
The output of each boiler model is a function of the unit’s firing rate (valve position) and return
water temperature.
When installed and operated in accordance with this Instruction Manual, the BMK 750 and BMK
1000 MBH Boilers comply with the NOx emission standards outlined in:
• South Coast Air Quality Management District (SCAQMD), Rule 1146.2
Whether used in singular or modular arrangements, the BMK 750 and BMK 1000 offer the
maximum venting flexibility with minimum installation space requirements. These Boilers are
Category II, III and IV, positive pressure appliances. Single and/or multiple breeched units are
capable of operation in the following vent configurations:
• Conventional, Vertical
• Conventional, Sidewall
• Conventional, Direct Vent, Vertical
• Sealed, Direct Vent, Horizontal
These boilers are capable of being vented utilizing PVC, CPVC, Polypropylene and AL29-4C
vent systems.
The Benchmark's advanced electronics are available in several selectable modes of operation
offering the most efficient operating methods and energy management system integration.
IMPORTANT
Unless otherwise specified, all descriptions and procedures provided in this
Installation, Operation & Maintenance Manual apply to both Benchmark
750 MBH and Benchmark 1000 MBH boilers.