Aerco BENCHMARK 2500DF User Manual page 7

Benchmark 2500DF-3000DF Installation, Operation & Maintenance Manual
The AERCO Benchmark (BMK) 2500 & 3000 MBH Dual Fuel Boilers are modulating and condensing
boilers. 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 turn down ratio is 15:1 maximum.
This BMK model provides extremely high efficiency and makes it ideally suited for modern low
temperature, as well as, conventional heating systems. It may be set to use either natural gas or propane
gas.
The Benchmark Model BMK 2500DF & BMK 3000DF operate within the following input and output
ranges:
Benchmark Model
BMK 3000DF
BMK 2500DF
The output of the boiler 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, these Dual Fuel 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 2500DF and 3000DF Dual Fuel boilers 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 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.
Unless otherwise specified, all descriptions and procedures
provided in this Installation, Operation & Maintenance Manual
apply to the Benchmark 3000 and 2500 MBH Dual Fuel boilers.
OMM-0099_0A
GF-145
FORWARD
FOREWORD
Input Range (BTU/hr.)
Minimum Maximum
200,000 3,000,000
167,000 2,500,000
IMPORTANT
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
Output Range (BTU/hr.)
Minimum Maximum
186,000 2,790,000
155,000 2,325,000
Page 7 of 234
PR1: 05/21/2014