Aerco BMK-5000 LGP 5 Million BTU Gas Boiler 5000 MBH 140HP High Efficiency Condensing Natural Gas

OVERVIEW

Aerco BMK-5000 LGP High-Efficiency Condensing Gas Boiler - Model BMK-5000 LGP. Professional-grade natural gas-fired condensing boiler featuring 5,000,000 BTU/HR (5000 MBH) maximum input capacity with 4,700,000 BTU/HR output at 94% AHRI thermal efficiency, equivalent to approximately 140 boiler horsepower. Advanced modulating condensing boiler with 12:1 turndown ratio (400,000 to 5,000,000 BTU/HR range). Complete with 439 stainless steel heat exchanger, integrated modulating air/fuel valve system, fault mode diagnostic panel with digital readout, and comprehensive safety controls. Factory-assembled unit with insulated heat exchanger, electric probe low water cutoff, automatic and manual reset high limits, and CSD-1 compliant gas train. Modern black and gray cabinet design with professional finish. Wall-mounted or floor-standing configuration. 480V 3-phase 60Hz electrical service. Used condition with protective wrapping. Ideal for commercial buildings, institutional facilities, industrial applications, multi-family housing, schools, hospitals, or any facility requiring high-efficiency, low-emissions natural gas heating with proven Aerco reliability and advanced condensing technology.

EQUIPMENT SPECIFICATIONS

Boiler Model Information:

• Manufacturer: Aerco (A Watts Brand)
• Product Line: BMK Series Condensing Boiler
• Model Number: BMK-5000 LGP
• Unit Designation: B-2
• Configuration: High-efficiency condensing boiler
• Fuel Type: Natural Gas (LGP - Low Gas Pressure)
• Technology: Condensing design with stainless steel heat exchanger

Performance Ratings:

• Maximum Input: 5,000,000 BTU/HR (5000 MBH / 5 Million BTU)
• Minimum Input: 400,000 BTU/HR (400 MBH)
• Output: 4,700,000 BTU/HR (4700 MBH / 4.7 Million BTU)
• Boiler Horsepower: Approximately 140 HP equivalent
• Thermal Efficiency: 94% AHRI certified
• Turndown Ratio: 12:1 (modulating)
• Fuel Type: Natural Gas
• Configuration: Condensing hot water boiler

Electrical Specifications:

• Voltage: 480 Volts
• Phase: 3-Phase
• Frequency: 60 Hertz
• Power Supply: 480V/3Ph/60Hz

Heat Exchanger Specifications:

• Material: 439 Stainless Steel
• Design: Single inlet configuration
• Construction: Condensing design
• Insulation: Factory insulated
• Corrosion Resistance: Stainless steel construction
• Condensate Production: Includes condensate trap

Control Systems:

• Fault Mode Diagnostic Panel with Digital Readout
• 12:1 Modulating Air/Fuel Valve
• Adjustable Automatic Reset High Limit
• Manual Reset High Limit (max 210°F setpoint)
• Normally Open Fault Relay
• Digital display and diagnostics
• Advanced microprocessor control

Safety & Instrumentation:

• Electric Probe Low Water Cut-Off
• Adjustable Automatic Reset High Limit
• Manual Reset High Limit (210°F max)
• Combination Temperature and Pressure Gauge
• Pressure Relief Valve (shipped loose)
• CSD-1 compliant gas train
• Multiple safety interlocks

Physical Configuration:

• Type: Wall-mounted or floor-standing
• Cabinet: Black and gray professional finish
• Mounting: Versatile installation options
• Color: Black with gray accents
• Origin: USA (Aerco, Blauvelt, NY)
• Manufacturer Location: 100 Oritani Drive, Blauvelt, NY 10913

KEY FEATURES & BENEFITS

Aerco Quality Manufacturing:

• Premium USA boiler manufacturer
• Watts brand family
• BMK Series design
• High-efficiency condensing technology
• Professional engineering and design
• Blauvelt, New York manufacturing
• Proven reliability in demanding applications
• Industry-leading design

High-Efficiency Condensing Design:

• 94% AHRI thermal efficiency rating
• Condensing technology for maximum efficiency
• Significantly reduced fuel costs
• Lower emissions profile
• Environmentally friendly operation
• Energy Star equivalent performance
• Reduced carbon footprint
• Maximum heat recovery

Advanced Modulating Control:

• 12:1 turndown ratio capability
• 400,000 to 5,000,000 BTU/HR range (400 to 5000 MBH)
• Precise output matching to load
• Modulating air/fuel valve system
• Reduced cycling and wear
• Enhanced comfort control
• Improved efficiency at partial loads
• Responsive to demand changes

Stainless Steel Heat Exchanger:

• 439 stainless steel construction
• Corrosion-resistant design
• Condensing-rated materials
• Single inlet configuration
• Extended service life
• Resistant to flue gas condensation
• Professional engineering
• Factory insulated for efficiency

Comprehensive Control Package:

• Fault Mode Diagnostic Panel
• Digital readout display
• Real-time system monitoring
• Diagnostic capabilities
• Fault code identification
• Easy troubleshooting
• Professional control interface
• User-friendly operation

Safety & Compliance:

• CSD-1 compliant gas train
• Electric probe low water cutoff
• Dual high limit controls (auto and manual reset)
• Manual reset high limit (210°F max setpoint)
• Normally open fault relay
• Pressure relief valve included
• Multiple safety interlocks
• Code-compliant construction
• Professional safety engineering

Complete Factory Package:

• 439 stainless steel heat exchanger
• Integrated modulating burner system
• Fault diagnostic panel with digital display
• Complete gas train (CSD-1 compliant)
• Electric low water cutoff
• Temperature and pressure gauge
• Insulated heat exchanger
• All controls factory-installed
• Pressure relief valve (shipped loose)
• Condensate trap (shipped loose)
• 2" external manual gas cock (shipped loose)

Professional Installation Ready:

• Complete factory-assembled unit
• Wall-mount or floor-standing capability
• All controls pre-wired and tested
• Simplified field connections
• Reduced installation time
• Professional documentation available
• Clearance specifications provided
• Venting requirements detailed

SYSTEM COMPONENTS

Main Boiler Assembly:

• Aerco Model BMK-5000 LGP
• 5,000,000 BTU/HR (5000 MBH) maximum input
• 4,700,000 BTU/HR (4700 MBH) output
• 140 HP equivalent
• 94% thermal efficiency
• Condensing design
• 439 stainless steel heat exchanger
• Single inlet configuration
• Factory insulated
• Professional cabinet

Burner & Combustion System:

• Modulating gas burner assembly
• 12:1 modulating air/fuel valve
• Forced draft combustion
• Pre-mix burner technology
• Flame safeguard system
• Gas pressure monitoring
• Professional burner management
• CSD-1 compliant gas train

Control Systems:

• Fault Mode Diagnostic Panel
• Digital readout display
• Microprocessor-based control
• Modulating control algorithms
• Temperature controls
• Pressure monitoring
• Safety interlocks
• Normally open fault relay
• Professional control package

Safety & Instrumentation:

• Electric probe low water cutoff
• Adjustable automatic reset high limit
• Manual reset high limit (210°F max)
• Combination temperature/pressure gauge
• Pressure relief valve (shipped loose)
• Fault diagnostics
• Safety interlocks
• Emergency shutdown capability

Gas Train Components:

• CSD-1 compliant assembly
• 12:1 modulating air/fuel valve
• Manual gas cock (2", shipped loose)
• Gas pressure regulation
• Safety shut-off valves
• Gas pressure switches
• Inlet connection
• Professional gas train

Condensate Management:

• Condensate trap (shipped loose)
• Condensate drain connection
• pH neutralization provisions
• Proper drainage design
• Condensing boiler requirements

Heat Exchanger System:

• 439 stainless steel construction
• Single inlet design
• Condensing configuration
• Factory insulation
• Corrosion-resistant materials
• Professional engineering
• Extended service life

Cabinet & Mounting:

• Professional black and gray finish
• Insulated cabinet construction
• Wall-mount or floor-standing capability
• Access panels for service
• Professional appearance
• Durable finish

SPECIFICATIONS SUMMARY

Boiler:

• Manufacturer: Aerco (A Watts Brand)
• Model: BMK-5000 LGP
• Unit: B-2
• Type: Condensing gas boiler
• Fuel: Natural Gas (LGP)
• Max Input: 5,000,000 BTU/HR (5000 MBH / 5 Million BTU)
• Min Input: 400,000 BTU/HR (400 MBH)
• Output: 4,700,000 BTU/HR (4700 MBH / 4.7 Million BTU)
• Horsepower: ~140 HP equivalent
• Efficiency: 94% AHRI
• Turndown: 12:1
• Origin: USA

Electrical:

• Voltage: 480 Volts
• Phase: 3-Phase
• Frequency: 60 Hertz
• Service: 480V/3Ph/60Hz

Heat Exchanger:

• Material: 439 Stainless Steel
• Design: Single inlet
• Type: Condensing
• Insulation: Factory insulated

Configuration:

• Type: Wall-mount or floor-standing
• Cabinet: Black and gray finish
• Condition: Used
• Status: Available

ADDITIONAL INFORMATION

• Condition: Used
• Manufacturer: Aerco (A Watts Brand)
• Product Line: BMK Series Condensing Boiler
• Model: BMK-5000 LGP
• Unit Designation: B-2
• Fuel Type: Natural Gas (LGP - Low Gas Pressure)

Performance Specifications:

• Maximum Input: 5,000,000 BTU/HR (5000 MBH / 5 Million BTU)
• Minimum Input: 400,000 BTU/HR (400 MBH)
• Output: 4,700,000 BTU/HR (4700 MBH / 4.7 Million BTU)
• Boiler Horsepower: Approximately 140 HP equivalent
• Thermal Efficiency: 94% AHRI certified
• Turndown Ratio: 12:1 modulating capability
• Modulation Range: 400,000 to 5,000,000 BTU/HR (400 to 5000 MBH)

Electrical Requirements:

• Power Supply: 480 Volts, 3-Phase, 60 Hertz
• Professional electrical installation required
• Disconnect provisions per code
• Circuit protection per specifications

Heat Exchanger Details:

• Material: 439 Stainless Steel
• Design: Condensing configuration
• Inlet: Single inlet design
• Insulation: Factory-installed insulation
• Corrosion Resistance: Stainless steel for condensing applications
• Service Life: Extended durability

Control System Features:

• Fault Mode Diagnostic Panel with Digital Readout
• Real-time system monitoring and diagnostics
• Fault code display for easy troubleshooting
• 12:1 Modulating Air/Fuel Valve for precise control
• Adjustable Automatic Reset High Limit
• Manual Reset High Limit with maximum 210°F setpoint
• Normally Open Fault Relay for system integration
• Microprocessor-based advanced control
• Professional operator interface

Safety Features:

• Electric Probe Low Water Cut-Off protection
• Dual high limit controls (automatic and manual reset)
• Manual reset high limit with 210°F maximum setpoint
• Combination Temperature and Pressure Gauge
• Pressure Relief Valve (shipped loose for field installation)
• CSD-1 compliant gas train
• Multiple safety interlocks
• Emergency shutdown capability
• Flame safeguard system
• Professional safety engineering

Components Included:

• 439 Stainless Steel Heat Exchanger with single inlet
• Fault Mode Diagnostic Panel with Digital Readout
• CSD-1 Compliant Gas Train
• Normally Open Fault Relay
• Adjustable Automatic Reset High Limit
• Manual Reset High Limit (max 210°F setpoint)
• 12:1 Modulating Air/Fuel Valve
• Electric Probe Low Water Cut-Off
• Combination Temperature and Pressure Gauge
• Insulated Heat Exchanger
• Pressure Relief Valve (shipped loose)
• Condensate Trap (shipped loose)
• 2" External Manual Gas Cock (shipped loose)

Installation Requirements:

• Gas pressure: Permissible inlet gas pressure per specifications
• Maximum normal and minimum inlet gas pressure ratings
• Clearances: Per manufacturer specifications for combustible and non-combustible installations
• Venting: Condensing boiler venting requirements (PVC/CPVC or stainless steel)
• Condensate drainage: pH neutralization may be required per local codes
• Electrical service: 480V/3Ph/60Hz by licensed electrician
• Gas connection: By licensed professional per local codes
• Professional commissioning recommended

Condensing Boiler Considerations:

• Produces acidic condensate requiring proper drainage
• pH neutralization may be required per local codes
• Condensate trap must be properly installed and maintained
• Special venting materials required (PVC/CPVC or stainless steel)
• Air filter replacement or cleaning per maintenance schedule
• Annual maintenance recommended for optimal performance
• Water treatment recommended for extended equipment life

Current Status:

• Used condition
• Protective wrapping present
• Ready for installation
• Complete with all factory components
• Available for immediate delivery

Applications:

• Commercial buildings and facilities
• Institutional applications (schools, hospitals)
• Industrial heating applications
• Multi-family residential buildings
• Large commercial spaces
• District heating systems
• Process heating applications
• Hydronic heating systems
• Radiant floor heating
• Snow melting systems
• High-efficiency retrofit projects

Advantages of Condensing Technology:

• 94% thermal efficiency (vs 80-85% for non-condensing)
• Significant fuel cost savings
• Lower emissions (NOx and CO2)
• Environmentally responsible operation
• Eligible for energy efficiency incentives
• Extended equipment life with stainless steel heat exchanger
• Quiet operation
• Compact footprint

Features:

• Aerco BMK-5000 LGP condensing boiler design
• 5,000,000 BTU/HR (5000 MBH / 5 Million BTU) maximum input capacity
• 4,700,000 BTU/HR (4700 MBH / 4.7 Million BTU) net output
• 140 boiler horsepower equivalent
• 94% AHRI thermal efficiency rating
• 12:1 turndown ratio (400,000 to 5,000,000 BTU/HR / 400 to 5000 MBH)
• 439 stainless steel heat exchanger
• Single inlet heat exchanger configuration
• High-efficiency condensing technology
• Modulating burner with 12:1 turndown
• Fault Mode Diagnostic Panel with Digital Readout
• CSD-1 compliant gas train
• Electric probe low water cutoff
• Adjustable automatic reset high limit
• Manual reset high limit (210°F max setpoint)
• Normally open fault relay
• Combination temperature and pressure gauge
• Factory-insulated heat exchanger
• Wall-mount or floor-standing capability
• Professional black and gray cabinet
• 480V/3Ph/60Hz electrical service
• Natural gas (LGP) fuel
• Pressure relief valve included (shipped loose)
• Condensate trap included (shipped loose)
• 2" external manual gas cock included (shipped loose)
• Used condition
• Complete factory-assembled unit
• Professional-grade commercial/industrial construction
• Watts brand quality
• Made in USA (Blauvelt, NY)
• Ready for installation
• Contact for pricing and availability