Chapter 5 – Mode Of Operation - Aerco Benchmark 2.0 Installation, Operation & Maintenance Instructions Manual

FOREWORD
Foreword
The AERCO Benchmark 2.0 Low NOx (LN) Boiler is a modulating unit. It represents 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 Benchmark 2.0LN, with
its 20:1 turn down ratio and condensing capability, provides extremely high efficiencies and
makes it ideally suited for modern low temperature, as well as, conventional heating systems.
The boiler operates at inputs ranging from 100,000 BTU/hr. to 2,000,000 BTU/hr. The output of
the boiler is a function of the unit's firing rate and return water temperature. Output ranges from
99,000 BTU/hr. to 1,933,000 BTU/hr., depending on operating conditions.
When installed and operated on natural gas in accordance with this Instruction Manual, the
Benchmark 2.0LN Boiler complies 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 Benchmark 2.0LN offers the maximum
flexibility in venting with minimum installation space requirements. The Benchmark's advanced
electronics are available in several selectable modes of operation offering the most efficient
operating methods and energy management system integration.
For service or parts, contact your local sales representative or AERCO INTERNATIONAL.
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