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ALARMS
Temperature Alarms
The controller sets off an alarm in the case of a power failure, a fault in the
supply circuit or a high or low temperature. Temperature alarms are de-
fined according to the set point as shown in the diagram below.
Room
Temperature
Set Point
Set Point Alarms
The thermostat controller sets off a set point alarm if it detects a change
of more than 4°F (2.2°C) between two consecutive set point values trans-
mitted by the main temperature controller. This type of alarm is likely to
occur if the main controller fails or when a new batch starts.
When this type of alarm is set off, the thermostat controller asks the user
to acknowledge the alarm condition. In the meanwhile, the thermostat
controller operates as a stand-alone unit using the previous valid set point
that was transmitted by the main temperature controller.
SMART THERMOSTAT
High Temperature Alarm
High Alarm Offset
Low Alarm Offset
SMART THERMOSTAT rev.01
Time
27
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