Benchmark Platinum-Edge: Operation-Service Manual
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OMM-0137_D • GF-211 • 7/16/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 5 of 146
FOREWORD
The AERCO Benchmark (BMK) 750 through 6000 natural gas and propane 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, the Benchmark's modulating capability relates energy input directly to
fluctuating system loads. These BMK models provide extremely high efficiency operation and
are 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:
• All descriptions provided in this document apply to the Benchmark Platinum Series of boiler.
• All measurements apply to both natural gas and propane models, unless otherwise
specified.
Benchmark Boiler Intake and Output Ranges
MODEL
MINIMUM MAXIMUM MINIMUM MAXIMUM
BMK 750 50,000 (14.6 kW) 750,000 (220 kW) 47,750 (14 kW) 716,250 (210 kW)
BMK 1000 50,000 (14.6 kW) 1,000,000 (293 kW) 48,300 (14.15 kW) 968,000 (284 kW)
BMK 1500 75,000 (22 kW) 1,500,000 (440 kW) 64,500 (18.9 kW) 1,395,000 (409 kW)
BMK 2000 100,000 (29.3 kW) 2,000,000 (586 kW) 86,000 (25.2 kW) 1,860,000 (545 kW)
BMK 2500 167,000 (48.9 kW) 2,500,000 (732 kW) 144,000 (42.2 kW) 2,395,000 (702 kW)
BMK 3000 200,000 (58.6 kW) 3,000,000 (879 kW) 174,000 (51.0 kW) 2,874,000 (842 kW)
BMK 5000 400,000 (117 kW) 5,000,000 (1465 kW) 348,000 (102 kW) 4,750,000 (1392 kW)
BMK 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, the BMK 750 – 2000
and 5000 & 6000 comply with the NOx emission standards outlined in: South Coast Air
Quality Management District (SCAQMD), Rule 1146.2. In addition, the BMK 2500 – 6000
comply with the Bay Area Air Quality Management District regulation 9, Rule 7.
Whether used in singular or modular arrangements, the BMK 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:
• Room Combustion Air:
o Vertical Discharge
o Horizontal Discharge
• Ducted Combustion Air:
o Vertical Discharge
o Horizontal Discharge
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