Appendix C: RTU Open Points/Properties on the Equipment Touch
RTU Open v3 CARRIER CORPORATION ©2019
Installation and Start-up Guide All rights reserved
101
Occ Relative Humidity Setpoint
– The percentage of relative humidity in the space during
occupancy that will energize BO - 6 (Humidi-MiZer™).
D:
R:
60%rh
0 to Unoccupied
RH Control
Setpoint
Unocc Relative Humidity Setpoint
– The percentage of relative humidity in the space during the
unoccupied time period that starts the unit and energizes BO - 6 (Humidi-MiZer™).
D:
R:
95%
30 to 100%
– The design difference between indoor and outdoor CO2 levels. D:
R:
650ppm
0 to 9999 ppm
Alarm Configuration - Equipment Touch
Occupied Alarm Hysteresis
– This value is added to the occupied high effective setpoint
and subtracted from the occupied low effective setpoint to establish the occupied high
and low limits that the space temperature must exceed before an occupied SPT alarm
is generated. The alarm returns to normal when the space temperature drops below the
high effective setpoint or rises above the low effective setpoint.
D:
R:
5
°F (2.7 °C)
0 to 20
°F
(0 to 11.1
°C)
Unoccupied Low SPT Alarm Limit
–The value that the space temperature must drop
below to generate a
in the unoccupied mode. There is a
fixed hysteresis of 1
°F (.5 °C) for return to normal.
D:
R:
45°F (7.2°C)
35 to 90°F
(1.6 to 32.2°C)
Unoccupied High SPT Alarm Limit
– The value that the space temperature must exceed
to generate a
in the unoccupied mode. There is a fixed
hysteresis of 1
°F (.5 °C) for return to normal.
D:
R:
95°F (35°C)
45 to 100°F
(7.2 to 37.7°C)
Supply Air Temperature Alarm
– The value that the supply air temperature must drop below to
generate a
. There is a fixed hysteresis of 5 °F (2.7 °C) for
return to normal.
D:
R:
38°F (3.3°C)
15 to 90°F
(-9.4 to 32.2°C)
– The value that the supply air temperature must exceed to
generate a
. There is a fixed hysteresis of 5 °F (2.7 °C) for
return to normal.
D:
R:
160°F (71.1°C)
90 to 175°F
(32.2 to 79.4°C)
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