SCREEN DESCRIPTIONS
HeatNet Control V3
Page 92
Master Boiler Status Screen
The above screen on the Master boiler displays the start and stop timers that are used to bring on boilers below and shed them
above the heating band. When the Header temperature is below the band, the Heat Start Timer (Add Boiler Delay Timer) is
started. Once it reaches 0, the next boiler will fire and be added to the Boilers firing display. This will continue until the Header
temperature enters the Heating Band (Yellow) or all boilers have fired.
When the Header temperature is above the band
(Yellow), the HEAT STOP TIMER (Shed Boiler Delay)
is used to stop/shed boilers.
All boilers running are modulated to maintain Setpoint.
Boilers are not added or shed while in the heating band
(Yellow), except for when Predictive Start is set to YES.
If Predictive Start is used, and when the temperature is
falling fast through the band, a boiler will be started when in
the band.
The same use applies to the DHW Start Timer (Add Boiler
Delay) and DHW Stop Timer (Shed Boiler Delay) for DHW
heating.
The remaining Status screens are informational and self-
explanatory. These include Temperature Sensors, Analog
I/O, Interlocks, Ignition Signals, Stage Control inputs,
Graphing, OA Curve, and Runtimes.
