Carrier VVT Zone - Unit Configuration

Appendix A: VVT Zone Controller Points/Properties
52 VVT Zone Controller
Unit Configuration
i-Vu / Field Assistant:
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Unit Configuration
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UNIT
Point Name/Description
Default/Range
Heat Enable
D: – Enables the reheat function.
R:
Enable
Disable/Enable
Parallel Fan Heat On Delay
– The delay in reheat coming on after the zone has a
heating demand. If the
Term Type
is
Parallel
, this allows the fan time to use plenum air
to heat the space prior to bringing mechanical reheat. If the
Term Type
is
Single Duct
D:
,
we recommend that you set this value to 1 minute.
R:
15 minutes
0 to 30 minutes
Fan Off Delay
D: – Fan-typ
e terminals only. The amount of time the terminal fan continues
to operate after a heating demand is satisfied.
R:
120 seconds
0 to 180 sec
Maximum Heating SAT
D: – The maximum supply air temperature allowed while ducted
heat is operating. Ducted type supplemental heat is controlled so that it will not exceed
this limit.
R:
105°F
80 to 140°F
DCV Max Vent Damper Pos
D: – The maximum damper position that the IAQ function can
override the damper to. When active, the damper modulates to the temperature
control position or the IAQ override position, whichever is greater.
R:
70%
0 to 100%
Filter Service Alarm Timer
– The amount of time a Parallel or Series fan will run before
generating a
Filter Alarm
D:
. Set to 0 to disable the alarm.
R:
0 hr
0 to 9999 hr
Pushbutton Override
D: – Enables or disables the use of a pushbutton override from a
local space temperature sensor.
R:
Enable
Disable/Enable
Setpoint Adjust
D: – Enables the setpoint adjustment slider on the SPPL space sensor.
R:
Enable
Disable/Enable
Setpoint Adjustment Range
D: - The maximum amount that a user can adjust the
setpoint on the local SPT sensor.
R:
2°F
0 to 5°F
Heating Lockout Temperature
D: – 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. This function is active only if there is
a valid network outside air temperature.
R:
70°F
-60 to 150°F
Power Fail Restart Delay
D: – 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.
R:
60 seconds
60 to 600 seconds
Occupancy Schedules
– If
Enabled
, the controller stores and follows a schedule sent
over the network or programmed locally through a BACview or Field Assistant. If
Disabled
, the controller occupancy is controlled from the
BAS On/Off
or
System Occupancy
D:
network point.
R:
Enable
Disable/Enable
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