Hired-Hand Emergency Back-Up and Alarms: Secondary Sensing System - Manual (Page 7)

Manual No. 4801- 2997 Rev 7-08 Secondary Sensing System 7 of 40
5.1.1 Temperature
The specific Zone Temperature (Zone 1, 2, or 3) lists the individual sensor temperature for each zone.
The Ventilation Back-Up Temperature shown will be the average of the enabled sensors (Zone 1, 2, and/or
3). In the Zone Temperature Section, a reading of “--.-“ indicates the sensor is disconnected or in error.
Also, if the display is flashing “OFF”, it means the sensor is disabled. Therefore, it will not cause the
alarm to sound or be included in the Back-Up System’s average temperature. The Ventilation Back-Up
Temperature displays the average of the enabled Zone Temperature Sensors.
5.1.2 Target
The Target mode displays the target temperature used for Zone Alarm Limits and Back-Up Limits. The
Zone Alarm Limits and the Back-Up Limits are referenced to the target much like that of a stage on point
in a controller. Therefore, once initially set, the user will only adjust the target which will automatically
adjust the high and low limits appropriately. The Target temperature can be changed (0.5° increments)
using the Plus (+) or Minus (–) buttons. Example: If the Target Temperature is set to 80.0° F; The High
Zone Limit temperature is set to 92.0° F; The Back-Up High Limit temperature set to 90.0° F; When the
Target is dropped to 70.0° F, the High Zone Limits will change to 82.0° F and the Back-Up High Limit
temperature will change to 80.0° F.
Ventilation Back-Up Temperature
Specific Zone Temperatures
Target Temperature