Data Aire dara-4g2 - Page 13

13•dara-4g
2
User Manual
5. Sound the audible alarm to signal an alarm until silence
6. Continue to display the unit alarm message on the LCD until reset
7. Hold the dara-4g
2
Alarm Relay energized until alarm is corrected.
8. Will continue to bring on additional standby units if additional alarmed units are detected.
If no standby units are available then dara will:
1. Allow the alarmed unit to continue operation as if it had no alarm.
3. Willdiscontinuerotationandwillholdthelead/lagpatternxeduntilreset.
4. Sound the audible alarm to signal an alarm until silence.
5. Continue to display the unit alarm message on the LCD until reset
6. Hold the dara-4g
2
alarm relay energized until alarm is corrected.
After the cause of alarms has been investigated and corrected, the dara-4g
2
panel must be reset
bypressingthesilencebuttontwicewhenunits’alarmmessageappearsonLCDdisplay.When
reset, the dara-4g
2
panel will refresh the rotation time clock, and then start routine normal opera-
tion.
Zone Temperature Assist (Optional)
Zone temperature assist option requires an optional zone temperature sensor. After installing tem-
perature sensor, advance to menu J- Factory Settings and program Temp. Sensor to “Installed”;
and Temperature Assist to “Yes”. Use menu H to calibrate sensor if necessary. dara-4g
2
will bring
next available standby Unit online when zone temperature rises above Zone High Temperature
setpoint plus Temperature deadband. The Zone temperature assist logic is as follow:
1.Thereisave-minutedelaybetweenstoptostartofthesamestandbyunit.
2. When a standby unit is turned on by the zone temperature setpoint, it will stay on for at least 15
minutesevenwhenthezonetemperaturesetpointissatised.
Standby unit “ON” Sequence (Rising Temperature)
1st Standby unit ON at Zone Temperature Setpoint + Zone Temperature Deadband
2nd Standby unit ON at Zone Temperature Setpoint + (2 x Zone Temperature Deadband)
3rd Standby unit ON at Zone Temperature Setpoint + (3 x Zone Temperature Deadband)
Standby unit “OFF” Sequence (Falling Temperature)
1st Standby unit OFF at Zone Temperature Setpoint + (2 x Zone Temperature Deadband)
2nd Standby unit OFF at Zone Temperature Setpoint + Zone Temperature Deadband
3rd Standby unit OFF at Zone Temperature Setpoint