HeatNet Overview

Developed and manufactured by Hydrotherm’s sister company, Mestek Technologies, HeatNet provides an intuitive interface with plug-and-play connections to speed the set-up and diagnostic process for installing contractors. HeatNet is capable of operating KN units as single boilers or multi-boiler Master/Member networks of up to 16 boilers. It can also provide constant communication to a Building Management System to enable multi-function control of boilers, pumps, valves, louvers/dampers, hot water storage tanks, and outdoor reset. HeatNet maximizes performance while eliminating the need for a third party wall-mounted control platform.

HeatNet’s proprietary design allows for seamless web-based firmware upgrades, adding continuous value and boiler system control without the need for physical control platform updates that can make some equipment obsolete.

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The HeatNet boiler control is designed to provide KN-Series boilers with a complete integrated boiler management system. By providing precise system control, repeatability, and feedback thru digital communication. The control monitors boiler temperatures and limit circuit inputs to maximize turndown ratios to maintain peak efficiency through 5 temperature setting inputs: outside air, outlet (supply) water temperature, inlet (return) water temperature, header temperature, and boiler stack temperature.

HeatNet offers easy to read displays with intuitive control menus. The control configuration “learns” the applications’ optimal firing rates by using microprocessor electronics to monitor time-average responses based on actual usage to determine the load for the system for optimal energy efficiency. Standard HeatNet controls use a Modbus protocol with optional protocessor boards for BACnet and LonWorks based building management systems.

Variable control settings for Mod/Max firing rates allow adjustable maximum firing rates (factory preset at 70%), enabling all boilers to run at extremely efficient levels until all units in the sequence have fired at which time firing rates can increase above the standard setting to meet system demands. Boiler firing rotations can be programmed for first on/first off, first on/last off, or “True Rotation,” which rotates boiler run-times so that all units run for the same amount of time.

Electronics are located in a self-contained control enclosure through which all internal components and terminal blocks are easily accessed via a hinged, swing open door panel on the front of all units.

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