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® 2018 Valco Companies, Inc.
Static pressure settings are in inches of water. Times are in minutes and seconds. Low static pressure may
indicate malfunctioning fans, not operating or not pushing air (bad belt or obstruction). High static pressure
may indicate malfunctioning inlets or curtains. Static pressure high limit is usually set to a level representing
danger to the building. Static pressure needs to stay above the level you set for the time period you set before
the controller alarms.
SOUND ALARM WHEN.... Z1-S01
Stat Pressure Stays Above: 0.140 for 0:30
To have the curtains/inlets open fully, if the static pressure is high enough to cause an alarm, set the High Pressure
Alarm Open All Inlets to YES, to prevent the static pressure from rising too high and causing damage to the building.
SOUND ALARM WHEN.... Z1-S01
High Pressure Alarm Open All Inlets: YES
Sound Alarm When…Menu-continued
There are two types of static pressure low limit settings. The first type is constantly monitored. If this low limit is
exceeded (falls below) for the time period you enter, the alarm is triggered. This is useful during minimum ventilation
to ensure fans are being turned on, and during tunnel operation when a drop in static pressure is intolerable.
SOUND ALARM WHEN.... Z1-S01
Stat Press Stays Below: 0.010 for 10:00
The second type is checked only while one or more fans set as proportional are running. Set the static pressure
alarms for a level that might indicate problems with fans or inlets. Also, enter a time that the condition must exist.
However, be sure the time is less than the time the proportional fans run since the controller only checks for this static
pressure alarm condition while proportional fans are running.
SOUND ALARM WHEN.... Z1-S01
Fan ON Stat Press Below: 0.030 for 0:30
POSSIBLE STATIC PRESSURE ALARM SETTINGS
Static Pressure Alarms