Benchmark 5000-6000 Operation & Maintenance Manual
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OMM-0118_B
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GF-203
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5/9/2019
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FOREWORD
The AERCO Benchmark (BMK) 5000 MBH (1465 kW) and 6000 MBH (1758 kW) natural gas
and dual fuel propane/natural gas fueled boilers are modulating and condensing units. They
represent a true industry advance that meets the needs of today's energy and environmental
concerns. Designed for application in any closed loop hydronic system, their modulating
capability relates energy input directly to fluctuating system loads. The maximum turn down ratio
for the BMK 5000 and 6000 is 15:1. These Benchmark models provide extremely high
efficiency, which makes them ideally suited for modern low temperature, as well as conventional
heating systems.
The Benchmark models operate within the following input and output ranges:
IMPORTANT!
Unless otherwise specified:
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All descriptions provided in this document apply to the Benchmark Series of boiler.
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All measurements apply to both natural gas and propane models, unless otherwise
specified.
Benchmark 5000 6000 boilers operate within the following input and output ranges:
Benchmark 5000 & 6000 Boiler Intake and Output Ranges
MODEL
INPUT RANGE (BTU/HR.)
OUTPUT RANGE (BTU/HR.)
MINIMUM
MAXIMUM
MINIMUM
MAXIMUM
5000
400,000 (117 kW) 5,000,000 (1465 kW) 348,000 (102 kW) 4,750,000 (1392 kW)
6000
400,000 (117 kW) 6,000,000 (1758 kW) 348,000 (102 kW) 5,700,000 (1670 kW)
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 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 1500 and BMK 2000 boilers offer
the maximum venting flexibility with minimum installation space requirements. These boilers are
Category II and IV, positive pressure appliances. Single and/or multiple breeched units are
capable of operation in the following vent configurations:
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Room Combustion Air:
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Vertical Discharge
o
Horizontal Discharge
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Ducted Combustion Air:
o
Vertical Discharge
o
Horizontal Discharge
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.
