Appendix A:  RTU Open Points/Properties in i-Vu®/Field Assistant   
 
 
 
 
RTU Open v3    CARRIER CORPORATION ©2019  
Installation and Start-up Guide    All rights reserved 
  86 
 
 
 
Save Performance Data Daily
 – If enabled, automatically moves 
to 
Historical Performance Data
 when resetting the 
 
every night at midnight.
 
D: 
R: 
Disable 
Disable/Enable 
 – RTU Open's hours of operation which occurred in the previous 
period that was prior to the last 
reset. 
R:  __ hr 
 – Percentage of 
 hours, above active 
Economizer time, which occurred in the previous period that was prior to the last 
reset. 
R:  0 to 100% 
 – Percentage of 
 hours that the DCV was active in 
the previous period that was prior to the last 
reset. 
R:  0 to 100% 
Unocc Free Cool Utilization
 – Percentage of 
 hours that the 
Unoccupied Free Cooling was active in the previous period that was prior to the last 
reset. 
R:  0 to 100% 
Part Load Cooling Utilization
 – Percentage of 
 hours that the 
Cooling, with less than the maximum configured number of cooling stages, was active in 
the previous period that was prior to the last 
reset. 
R:  0 to 100% 
Full Load Cooling Utilization
 – Percentage of 
 hours that the 
Cooling, with all of the configured number of cooling stages, was active in the previous 
period that was prior to the last 
reset. 
R:  0 to 100% 
 – Percentage of 
 hours that the Heating was 
active in the previous period that was prior to the last 
reset. 
R:  0 to 100% 
 – Maximum recorded OAT in the previous period that was prior to 
the last 
reset. 
R:  __°F/C 
 – Minimum recorded OAT in the previous period that was prior to the 
last 
reset. 
R:  __°F/C 
 
 
 
 
Properties > Control Program > Alarms 
 
 
 
 
 – Indicates if the safety chain circuit trips.  R:  Normal/Alarm 
 – Indicates if the fire shutdown circuit trips.  R:  Normal/Alarm 
– Indicates that the integrated gas valve is stuck open and a flame is still 
present while heat has been commanded off.
 
R:  Normal/Alarm