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
63
Point Name/Description
Range
Indoor Air Quality CO2 (ppm)
– The current space CO
2
concentration if a valid value
exists either as a connected ZS sensor with CO2 or a hardware sensor connected to this
controller (
Configuration
>
Unit Configuration
>
Input 1
(or
2
)
Function
is set to
IAQ
Sensor)
or a value received through the Network or Linkage.
R: 0 to 5000ppm
Outdoor Air Quality CO2 (ppm)
– The current outdoor air CO
2
concentration if the
Configuration
>
Unit Configuration
>
Input 1
(or
2
)
Function
is set to
OAQ Sensor
.
R: 0 to 5000ppm
Economizer Output
– The current economizer output with respect to the outdoor air
damper (if equipped).
R: 0 to 100% Open
Shutdown
– When
Active
, all alarms are reset. (Any currently active alarms will continue
to display.) Provides a means to stop heating and cooling in an orderly manner.
D:
R:
Inactive
Inactive/Active
Unit Configuration
Navigation:
i-Vu® / Field Assistant:
Properties
>
Control Program
>
Configuration
>
Unit Configuration
Point Name/Description
Range
Fan Mode
– The supply fan's operating mode.
Options:
Auto
- The fan cycles on/off in conjunction with heating or cooling.
Continuous
- The fan runs continuously during occupancy and intermittently during
unoccupied periods with heating or cooling.
Always On
- The fan runs continuously regardless of occupancy or calls for heating and
cooling.
D:
R:
Continuous
Auto
Continuous
Always On
Power Fail Restart Delay
– How long the controller delays normal operation after the
power is restored. Typically used to prevent excessive demand when recovering from a
power failure.
D:
R:
5 sec
0 to 30 sec
Fan Off Delay
– The number of seconds that the fan continues to run after heating or
cooling has ended.
D:
R:
90 seconds
10 to 300 seconds
Minimum Cooling SAT
– In cooling mode, the cooling outputs are controlled so that the
supply air temperature does not drop below this value.
D:
R:
50°F (10°C)
45 to 75°F
(7.2 to 23.9°C)
Maximum Heating SAT
– In heating mode, the heating outputs are controlled so the
supply air temperature does not rise above this value.
D:
R:
120°F (48.9°C)
85 to 150°F
(29.4 to 65.6°C)
Vent Dmpr Pos / DCV Min Pos
– The minimum outdoor air damper position maintained
during occupied periods.
D:
R:
20% Open
0 to 100% Open
Summary of Contents for RTU Open v3
Page 113: ......
