DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS
HeatNet Control V3
Page 107
ADAPTIVE
MODULATION
ADAPTIVE
If MODULATION MODE is set to ADAPTIVE on the Master
boiler, the Master lowers the system modulation rate of all currently
running boilers before a newly started boiler enters the Main Valve
state. Upon entering the Main Valve state of a newly fired boiler,
the Master waits the DELAY RELEASE time before allowing the
PID to resume modulation control. With MOD MODE set to ORIG
KN, The Master boiler keeps firing at the current modulation rate
when a new boiler is added and lets the PID adjust modulation rate
accordingly.
DROP DOWN MODE
ON CALL
If drop down is set to ON IGNITION and MOD MODE =
ADAPTIVE, and when a newly added boiler starts, the system waits
until it enters its IGNITION state before bring the system
modulation down. This allows for the system to prepare for the new
energy that is to be introduced. If DROP DOWN is set to
immediately, the system modulation is lowered as soon as the newly
added boiler is called.
DELAY RELEASE TIME
5 Seconds
0
– 600 SECONDS
Once the Main Valve opens on the newly added boiler and the MOD
MODE = ADAPTIVE the Master waits this amount of time before
releasing the PID to control modulation. This allows for the newly
added boiler to accumulate some soak time.
This is a global delay controlled by the Master boiler. It is
comparable to the MODULATE DELAY setting, but this is a local
setting on each boiler.
FIRING MODE
RUNTIME
LOFO: Boilers are fired Last On, First Off starting with Lead Boiler
FOFO: Boilers are fired First On, First Off
RUNTIME:
Boilers are fired based on the runtime they report back
to the Master boiler. Boilers with the least runtime are fired first and
boilers with the most runtime are stopped first.
MIXED: Different types of boilers can be mixed in a system and
fired based on (2) Priority sets. Boilers are started and stopped
within their Priority sets based on their runtime hours.
MINIMUM RUNTIME
10
1
– 750 HOURS
When the firing rotation is based on runtime, this value represents
the interval in hours of runtime before rotation occurs. Boiler to
Boiler.
MINIMUM OFF TIME
0
0 - 10 MINUTES
This is the time in minutes that the boiler must remain OFF before it
can be fired again. Very effective in dynamic systems to minimize
short cycling of a boiler and force the call to the next boiler (with
next shortest runtime if True Runtime is used)
FIRING PRIORITY:
2
1 or 2
There are (2) Priority settings used by the MIXED boiler rotation
algorithm. Priority 2 is the default and lowest priority. Priority 1
Is the highest priority. A Priority may be assigned to a set of boilers
which fires and rotates based on time and is independent of the other
Priority set.
PREDICTIVE START:
YES
YES/NO
YES: Predicts the boiler restart point in the heating band while the
temperature of the boiler is drifting down through the band. The
purpose of this is to ensure the temperature remains in the heating
band. It also minimizes temperature swings when the boiler is
stopped and started at low inputs.
Содержание HEATNET 3.0 Torus Series
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