Carrier TruVu VAVB3-E2 - Page 125

Appendix A: TV-VAVB3-E2 Points/Properties
TruVu™ VAVB3-E2 CARRIER CORPORATION ©2022
Installation and Start-up Guide All rights reserved
119
Point Name/Description
Default/Range
IAQ/Ventilation Alarm
Occupied High CO2 Alarm Limit – The value that the CO
2
sensor must exceed to
generate an Indoor Air Quality Alarm in the occupied mode if DCV Control is set to
Enable. There is a fixed hysteresis of 100ppm for return to normal.
D:
R:
1100ppm
0 to 9999 ppm
Alarm Delay (min/ppm) – The fractional portion of a minute used to determine the
amount of delay before an indoor air quality alarm is generated when the controller
transitions to the occupied mode. The delay time equals this value multiplied by the
difference between the sensor CO
2
value and the setpoint plus 15 minutes.
D:
R:
0.25 minutes
0.10 to 1.00 minutes
Heating Valve Alarms
Smart Vlv1 Alarm Diff – The difference between the Hot Water Valve output command
and the feedback input must be greater than this value for 1 minute to trigger the
alarm.
D:
R:
5%
0 to 100%
Heating Valve Cycling Alarm – Alarm occurs if the input cycles more than __ times in a
__ min period.
NOTE The input must reverse by more than __ to be counted.
__ times
D:
R:
15
0 to 999
in a __ min period
D:
R:
60 minutes
0 to 999 minutes
The input must reverse by more than __ to be
counted
D:
R:
5%
0 to 99%
Heating Valve Failure Alarm – Alarm occurs if discharge air temp does not rise __ °F
within __ min after the heating coil valve command is > __ % Open.
must not rise __ °F
D:
R:
2.5 °F (1.4 °C)
0 to 99 °F
(0 to 55 °C)
within __ min
D:
R:
15 minutes
0 to 999 minutes
after the heating coil valve command is >
__%Open.
D:
R:
80% Open
0 to 100% Open
Alarms Displayed on ZS Sensor
Space Temperature Alarm – If set to display, shows the alarm indicator on the
communicating zone sensors, if the Space Temperature alarm is active.
D:
R:
Ignore
Ignore/Display
Supply Air Temp Alarm – If set to display, shows the alarm indicator on the
communicating zone sensors, if the Supply Air Temp alarm is active.
D:
R:
Ignore
Ignore/Display
Dirty Filter Alarm – If set to display, shows the alarm indicator on the communicating
zone sensors, if a Filter alarm is active.
D:
R:
Display
Ignore/Display