The Alarm Reset item selects how the alarms terminate
after the unit returns to control set point. The Alarm Reset
affects the audible alarm, visual alarm, and relay output,
which means all are latched or unlatched.
LATCHED requires the staff to press the key to clear
alarms.
UNLATCHED (alarm follow) automatically resets the
alarm when the room pressure is:
0.001.0 in. W.C. ft/min greater than the low alarm set
point
0.001.0 in. W.C. ft/min less than the high alarm set
point
50 cfm greater than the low alarm setpoint for flow
alarms
0.3°F for temperature
0.5% RH
The Alarm Delay item sets the period of time the room
pressure differential, flow or temperature must be above
the high alarm set point or below the low alarm set point
before the controller enters alarm mode. Use the
Alarm Delay function to avoid momentary, nuisance
alarms.