Appendix A: TV-VVTZC-E2 Points/Properties
TruVu™ VVTZC
-E2
©2022 Carrier.
Installation and Start-up Guide
All rights reserved.
103
Point Name/Description
Default/Range
T55 Pushbutton Override
–
Enables or disables the use of a pushbutton override from a
local space temperature sensor.
D:
R:
Enable
Disable/Enable
Setpoint Adjustment
–
Enables or disables the setpoint adjustment mechanism on the
local space sensor.
D:
R:
Enable
Disable/Enable
Setpoint Adjustment Range
- The maximum amount that a user can adjust the setpoint
on the local ZS or SPT sensor.
D: 2 °F (1.1 °C)
Heating Lockout Temperature
–
Supplemental reheat is disabled if outside air
temperature exceeds this value. Supplemental reheat is enabled when the outside air
temperature falls below a fixed hysteresis of 2 °F (1.1 °C). This function is active only
if there is a valid network outside air temperature.
D:
R:
70°F (21.1°C)
35 to 150°F
(1.6 to 65.5°C)
Power Fail Restart Delay
–
How long the controller delays normal operation after the
power is restored. This is typically used to prevent excessive demand when recovering
from a power failure. Applies to Series Fan start delay when system mode transitions
from unoccupied to occupied. A delay of no greater than 120 seconds is recommended
for Series Fan applications.
D:
R:
60 seconds
0 to 600 seconds
Occupancy Schedules
–
If
Enabled
, the controller stores and follows a schedule sent
over the network or programmed locally through a touchscreen or Field Assistant. If
Disabled
, the controller occupancy is controlled from the
BAS On/Off
or
System
Occupancy
network point.
D:
R:
Enable
Disable/Enable
Occ Override Delay
–
The amount of time the controller remains occupied after the
remote occupancy switch returns to the unoccupied position.
D:
R:
15 minutes
0 to 240 minutes
Smart Valve Max Pos
–
The maximum position that the Smart Valve will control to.
D:
R:
100%
0 to 100%
T55 Override Duration
–
The amount of time that the controller runs in the occupied
mode when a user presses the T55 sensor's override button for 1 to 10 seconds.
Pushbutton Override
must be set to
Enable
.
D:
R:
1 hr
1 to 4 hr
Environmental Index Enable
–
If enabled, when a zone is occupied, it monitors the
deviation of space temperature from effective heating and cooling setpoint range. It
monitors optional relative humidity if
RH Control
is set to
Enable
and/or monitors CO
2
if
DCV Control
is set to
Enable
.
D:
R:
Enable
Disable/Enable