Foreword - Watts Aerco BENCHMARK 750 User Manual

Benchmark 750 – 1000 Boiler User Manual - INTERNATIONAL
The AERCO Benchmark (BMK) 750 MBH (220 kW) and 1000 MBH (293 kW) 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, 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. These BMK models provide extremely high efficiency operation and
are ideally suited for modern low temperature, as well as, conventional heating systems.
The Benchmark Model BMK 750 and BMK 1000 boilers operate within the following input and
output ranges:
Benchmark
Model
Minimum
BMK 750
50,000 (14.6 kW)
BMK 1000
50,000 (14.6 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 750 and BMK 1000 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:
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
series of boiler.
OMM-0119_0A
GF-130-I
FORWARD

FOREWORD

Input Range (BTU/hr.)
Maximum
750,000 (220 kW)
1,000,000 (293 kW)
IMPORTANT
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
Output Range (BTU/hr.)
Minimum
47,750 (14 kW)
48,300 (14.15 kW)
Maximum
716,250 (210 kW)
968,000 (284 kW)
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11/03/2016