Appendix A: RTU Open Points/Properties in i-Vu®/Field Assistant
RTU Open v3
CARRIER CORPORATION ©2019
Installation and Start-up Guide
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65
Point Name/Description
Range
Pre Occupancy Purge
– Enables or disables the use of a purge cycle immediately prior
to the start of a scheduled occupied period.
D:
R:
Disable
Disable/Enable
Purge Time
– The maximum amount of time used for a pre-occupancy purge.
D:
R:
60 minutes
0 to 240 minutes
Unocc Free Cool
– Enables or disables the use of the economizer to provide unoccupied
free cooling (NTFC).
D:
R:
Disable
Disable/Enable
Minimum Setpoint Separation
– The minimum amount of temperature separation
between the heating and cooling setpoints.
D:
R:
5 °F (2.7 °C)
2 to 10 °F
(1.1 to 5.5 °C)
Occupancy Source
- The method that the controller uses to determine occupancy.
Options:
Always Occupied
= Controller operates continuously as occupied.
BACnet Schedule
= Controller follows a schedule set up in Field Assistant or the i-Vu®
application.
BAS On/Off
= Occupancy is set over the network by another device or a third party BAS.
Remote Occ Input
= Occupancy is set by a remote contact.
D:
R:
Always Occupied
Always Occupied
BACnet Schedule
BAS On/Off
Remote Occ Input
Input Configuration
Input 1 Function
– The type of sensor (4-20 mA) connected to terminals J4 – 4, 5, and
6.
D:
R:
No Sensor
No Sensor
IAQ Sensor
OAQ Sensor
Space RH Sensor
Input 2 Function
– The type of sensor (4-20 mA) connected to terminals J4 – 1, 2, and
3.
D:
R:
No Sensor
No Sensor
IAQ Sensor
OAQ Sensor
Space RH Sensor
Input 3 Function
– The usage of Input 3. You must also set
Input 3 Switch
Configuration
.
Options:
No Function
– The input is not used.
Compressor Safety
– Safety device status.
Fan Status
– Proves supply fan operation.
Filter Status
– Indicates a dirty filter.
Remote Occupancy
– Sets occupancy using a hardware contact.
Door Contact
– Disables mechanical cooling and electric or gas heating, when active.
D:
R:
Compressor Safety
No Function
Compressor Safety
Fan Status
Filter Status
Remote Occupancy
Door Contact
Input 3
Switch Configuration
– The normal (de-energized) state for the set of contacts
terminated at
Input
3
.
D:
R:
NO
NO/NC (normally
open/normally closed)
Summary of Contents for RTU Open v3
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