Modulex EXT
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MODEL MLX EXT TECHNICAL DATA SHEET AERCO MODULEX EXT BOILERS Sizes: 321 - 1123 MBH Pending Pending A breakthrough in high-efficiency design, AERCO’s condensing and fully modulating Modulex boilers support 321 to 1123 MBH hydronic heating systems while delivering a greater degree of operating reliability for customer peace of mind. To achieve the greatest possible fuel savings, each boiler combines independent, 160,500 BTU/hr. thermal modules (see back) that operate to deliver superior turndown and a range of non cycling operation not readily achieved by competitive equipment or controls. In addition to minimizing redundant capacity needed for any project, these quiet and lightweight boilers can support low NOX and low gas pressure applications as well as a variety of venting materials. The unit offers multiple supply/return piping and venting locations for installation flexibility and allows for multiple units to be easily co-located for greater than 1 million BTU/hr applications. Combustion view ports and easy access to all operating components further simplify minimal maintenance requirements. The Modulex EXT comes standard with a epoxy coated enclosure allowing for outdoor installations. In addition to controlling the boiler according to a constant set point, indoor/outdoor reset or 0-10V signal, one or more units can be integrated via Modbus communications protocol to a facility wide Energy Management or Building Automation System. THERMAL EFFICIENCY: AERCO is currently developing comprehensive efficiency curves for the complete line of Modulex boilers using a new, rigorous testing protocol. FEATURES: • Condensing Boiler • Natural Gas or Propane • Unmatched Turndown • 7:1 to 24.5:1 Depending Upon Unit • Whisper Quiet Operation <50 dBa • Low NOx Emission <20 ppm • Direct or Conventional Vent with PVC, CPVC, Polypropylene or AL29-4C Materials • Common Vent Capability • Outdoor Installation Capable • Small, Doorway-Size Footprint • Flexible Piping and Venting Connections • Equipped with Sealed Combustion • Superior Reliability • Minimal Maintenance • Easy Open Access for Serviceability • 0-10V output to control primary VFD pump • Supports Integration to BAS System

RATINGS: Model Number MLX EXT 321 MLX EXT 481 MLX EXT 641 MLX EXT 802 MLX EXT 962 MLX EXT 1123 *Note: Max output varies depending on supply and return water temperatures, please contact for factory representative for greater details Boiler Category Turndown or Operating Range Vent Size Max. Allowed Working Pressure Electrical Req: 120V 15AMP max. Water Connections (NPT) Min. Water Flow @ Min. Fire (GPM) Min. Water Flow @ Full Fire (GPM) Max. Water Flow (GPM) Water Pressure Drop @ Max. Flow (Ft. of Hd) Water Volume: Gallons Thermal Modules Vent Materials (as per local code) Type of Gas Can...

DIMENSIONS: Model Number MLX EXT 321 MLX EXT 481 MLX EXT 641 MLX EXT 802 MLX EXT 962 MLX EXT 1123 ENHANCED RELIABILITY WITH GREATER SEASONAL EFFICIENCY The independent operation of two or more thermal modules increases each boiler’s turndown range while also increasing its overall reliability. And since thermal efficiency increases as firing rates drop, the simultaneous lowfire operation of multiple modules also ensures that Modulex boilers continuously maximize operating efficiency. For example, the MLX-1123 EXT combines the power of seven thermal modules, each operating with greater than...

Specifications subject to change without prior notice. Consult website or contact AERCO. MLX EXT 05/2013 NY WATER HEATERS • BOILERS • PARTS & ACCESSORIES AERCO INTERNATIONAL, INC. 100 ORITANI DR. • BLAUVELT, NY 10913 (845) 580-8000 • FAX (845) 580-8090 www.aerco.com