Phason Supra Touch Series, Manual, Page: 43 / 98

Phason 43 / 98 34740001
Programming alarms
An alarm occurs if an enabled alarm condition is present for longer than the minimum duration of one
minute. The one-minute minimum duration prevents alarms from occurring when the temperature rises or
drops for just a few seconds. The exception to the one minute minimum is actuator jam alarms. Actuator
jam alarms activate 20 seconds after the alarm is detected.
When an alarm occurs, the alarm relay triggers (switches) and a message flashes on the screen. For more
information, read
Acknowledging alarms
on page 66.
The actuator jam alarm has no settings, which you can enable or disable it. Temperature alarms are
described below.
Temperature alarms
If the high temperature alarm setting is 85.0°F and the temperature rises to 86 degrees, but drops below 85
degrees 30 seconds later (before the minimum duration of 1 minute), there is no alarm.
If the temperature rises to 86 degrees and stays there for 1 minute, an alarm occurs. The alarm relay remains
active until the temperature drops below the high temperature alarm setting.
Outdoor temperature compensation
The purpose of outdoor temperature compensation is to prevent high temperature alarms from occurring
on hot days when the temperature set point cannot be maintained. Outdoor temperature compensation is
available for zones only, not individual sensors, and requires a temperature sensor that is mounted outdoors.
Outdoor compensation is the offset added to the high temperature alarm setting when the outdoor
temperature is higher than the high alarm setting. High maximum is the highest temperature you can have in
the zone; any temperature above this value is an alarm condition.
You set the compensation offset and the high maximum values. Supra Touch adds the compensation offset
to the outdoor temperature to create a new setting called the compensated high alarm . The compensated high
alarm becomes the new temperature limit, up until the high alarm maximum. When the zone temperature is
higher than the compensated high alarm, there is an alarm condition.
In the example below, the high alarm is 75°F, compensation offset is 5°F, and high maximum is 85°F. Supra
Touch adds 5° to the outdoor temperature to create the compensated high alarm, up to a maximum of
85°F.