Baseline Systems BaseStation 3200 - Manual (Page 47)

C h a p t e r 3 – A d v a n c e d P r o g r a m m i n g
Page 45
Baseline 3200
is used as efficiently as possible. Setting this value to zero will disable its use to control zone
concurrency.
High Flow Limit
This represents a critical limit for the system. When this value is greater than zero, the limit will
be compared against the measured reading from the flow device very minute. If the flow rate
reading exceeds the limit for three or four minutes in a row, an alert will be generated. If the
shut down box is set to Y (yes), then programs using this POC will be stopped and corresponding
MVs will be shut off. If the flow device is a Flow+NOMV type, the flow limit is programmed into
the flow device. Then the high flow limit will be monitored and the NOMV shut off when the
flow limit is exceeded – this can still happen with the controller off or powered down as long as
this flow device is powered up (external power required).
Unscheduled Flow Limit
When this limit is set to greater than zero, the flow is monitored 24x7 for any flow that does not
correspond to running programs. This is often used with a NOMV to allow some flow that is off
schedule, allowing for some manual taps or hose bibs. If the flow exceeds the limit for several
minutes then an alert is generated. If the shut down box is Y, then the associated MVs will turn
off.
Monthly Budget
When this value is greater than zero it performs a policing function for the total water used in a
single month. If the monthly water used exceeds this number then an alert is generated. If the
Shut Down box is set to Y, then the associated MVs and shut off and water is stopped until the
first of the next month
Mainline Limits
The next set of limits is set in the Mainline Setup
menu. This screen is reached by turning the dial
to the Flow Menu position, highlighting the
Mainline Setup menu item and pressing ENTR. If
you are already in a flow sub-menu, press CLR to
return to the top level, select the new menu
item and press ENTR.
Most sites are served with a single mainline,
meaning that all water is distributed through a
single pipe, even though there may be multiple
POCs that supply water to that pipe or mainline.
Most programming, therefore, deals with
mainline 1, which is the default for all flow devices, master valves, and programs. The settings
for this screen will be explained:
Valid Flow Delay
This time represents the time that it takes to achieve a steady flow rate after a valve change.
This needs to take into consideration the valve open and close times (some zones turning on and
others turning off) and possible pipe fill times. The default value is 2 minutes, but may be
changed from 1 to 30 minutes. Zone changes are made at the top of the minute – after changes,