FEATURES & SPECIFICATIONS HeatNet Control V3
Page 8
Features & Specifications
Hardware Version 3.x Control
Features
(Identified by circuit board color: BLACK)
1. Support for (2) Circulator pumps. Two rotation modes
are provided: Based on system runtime or system pump
runtime hours. Pump failure switchover/retry mode.
2. Warm weather shutdown, (2) pump jog and local pump
jog to keep pumps from seizing.
3. The Modbus, BACnet or LonWorks communications
port can be accessed concurrently with the USB port
(HeatNet Control Pro). The BACnet, LonWorks, or
Modbus connections do not need to be disabled to use
the USB ports.
4. The DHW pump and the Local Pump relay connections
now provide a normally closed contact. This allows for
the use of a power open/power close valve.
5. Support for 5mA 0-10VDC control signals using third
party controls.
6. Support for (2) display types: Vacuum Florescent and
Color LCD using the same 20 pin ribbon cable.
7. System Return sensor input.
8. Enhanced bootloader and firmware storage. One
firmware storage location for user updates. One
firmware program that always remains resident so that a
factory program can be restored. Primary loading is
with a flashdrive.
9. Support for High Efficiency Ametek blowers.
10. 32-bit Microcontroller operating @ 64 MHz with
5-stage pipeline, and prefetch cache.
11. (3) Stage control relay outputs for TBD applications.
12. Backwards compatible with existing HeatNet versions
1.x and 2.x controls and applications.
13. Support for 135 Ohm control actuators.
14. 1k Platinum Stack sensor
15. Flow meter input or BMS GPM input/control
16. On-board HeatNet Online network module.
17. Dual Adjustable PID controls. One for space heating
and one for DHW heating. Allows for simultaneous
DHW/Space heating.
18. Added High Turndown configuration resistor (100-
ohms). This configuration resistor allows the boiler to
be setup for high turndown operation. The turndown
percentage is determined by the boiler type chosen in
the menu.
Standard Features Overview
1. Five levels of external control inputs, including
modulation and staging that provide application
flexibility.
2. Digital Communications Control (analog 4-20mA and
0-10VDC control supported, but not required).
a. Boiler to Boiler: HeatNet (H-Net)
b. Building Management System (MODBUS,
Optional BACnet or LonWorks) to Boiler
3. Distributed control using the HeatNet (H-Net) protocol
for up to 16 boilers. Eliminates the need for “wall
mounted” controls.
4. Analog Control 4-20mA and 0-10VDC (5mA minimum
current) signals supported.
5. System/Boiler operating status text display
6. Interlock, Event, and System logging with a time
stamp.
7. Advanced PID algorithm optimized for the Torus Series
boilers.
8. (4) Dedicated temperature sensor inputs for: Outside
Air Temperature, Supply (Boiler Outlet) Temperature,
Return (Boiler Inlet) Temperature, and Header
(Common System Supply) Temperature.
9. Automatically detects the optional temperature sensors
on power up. (Outdoor air temperature sensor is
manually enabled in the settings menu.)
10. Menu driven calibration and setup menus with a bright
(Adj.) 4-line Vacuum Fluorescent Display.
11. (8) Dedicated 24vac interlock monitors, and 8 dedicated
120vac system monitors used for diagnostics and
providing feedback of faults and system status.
12. Multiple circulator pump control modes.
13. Combustion Air Damper control with proof time,
support for a common combustion air damper.
14. USB/RS485 network plug-in to allow firmware updates
or custom configurations.
15. Optional BACnet or LonWorks interface.
16. Alarm Relay dry contacts, and Audible Alarm.
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