4
The auxiliary alarm can be activated either by a contact closure or contact opening. The alarm
can be delayed up to 30 seconds and will activate the audible alarm.
2.8 DISPLAY
The 3-1/2 digit LED is factory scaled to indicate the space pressurization level in engineering
units of either Inches Water Column or Pascals.
2.9 DISPLAY SELECTION
The 3-1/2 digit LED space pressure indicating meter is also utilized for indicating and
adjusting the Alarm Setpoint value by depressing a push button switch located under the
access door on the cover plate. Pressing of this push button toggles the indicated value
between space pressure and alarm setpoint. If the switch is not pressed for approximately 60
seconds the display will automatically defaults to indicate the measured space pressure.
2.10 KEY LOCKED ACCESS DOOR
The Key Locked Access Door allows for controlled access to Guardian configuration, alarm
setpoint display and adjustment, alarm delay on activation adjustment, activation/deactivation
of the local audible alarm, and differential pressure transducer calibration.
3.0 CENTRAL MODULE CONFIGURATION
(Refer to Figures 2 and 3 for jumper locations)
3.1 Equipment Required
3.1.1 Small Needle Nosed Pliers
3.2 Positive/Negative Space Pressure Alarming
3.2.1 Positive space pressure alarming is established by placing jumper H3/ALARM SP in
the + position, and jumper H4/SPACE in the POS position.
3.2.2 Negative space pressure alarming is established by placing jumper H3/ALARM SP in
the -- position, and jumper H4/SPACE in the NEG position.
3.3 Remote Positive/Negative Space Pressure Selection
3.3.1 To configure for remote space pressure selection, set H3 & H4 jumper to AUTO
position.
3.4 Audible Alarm Activation/Deactivation
3.4.1 To activate the local audible alarm function, place jumper H11/AUDIBLE ALARM in
the ON position.
3.4.2 To deactivate the local audible alarm function, place jumper H11/AUDIBLE ALARM
in the OFF position.
3.5 Analog Space Pressure Output Signal
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