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Sequence of operation
Occupancy
The VVT Zone Controller's operation depends on the zone's occupancy state as determined by occupancy
schedules or a remote occupancy override.
Occupancy Schedules
•
A local schedule set up directly in the controller using a BACview or Field Assistant.
•
A network schedule from an i-Vu internal router. The VVT Zone Controller must be networked to an i-Vu
Open Router or an i-Vu internal router.
•
A System Occupancy network point. This point links the controller occupancy to another controller in the
network so that multiple zones can follow the occupancy of another VVT Zone or other controller on the
network.
To set up occupancy schedules, you first define a schedule for each day of the week and then define
schedules for the exceptions, such as holidays. The exceptions can be based on a date, a date range, or a
week and day.
NOTES
Occupancy Schedules
•
The
•
A network schedule downloaded from i-Vu will overwrite a local schedule that was set up in a BACview or
Field Assistant.
Remote Occupancy Override
to the isolated, dry contact of an occupancy sensor located in the zone. The controller can override the
occupancy state based on whether or not the space is actually occupied. If the occupancy sensor contact is in
the same state as
schedule. If the contact is in the opposite state, it overrides the zone into the unoccupied mode. The input
can be configured for normally closed or normally opened contact types and is set to Open by default so that
it does not affect the controller occupancy operation if left unused.
Learning Adaptive Optimal Start
specified period of time to achieve the occupied setpoint by the time scheduled occupancy begins. This
learning adaptive algorithm uses the
values to calculate the effective setpoints prior to the occupied start time. The algorithm calculates a learned
cooling and heating capacity during the previous unoccupied time. Set the
Optimal Start
Optimal Start
Adjustment amounts are defined in the thermographic color fields located directly above the
Points
graph under
BAS On/Off
Schedules
Optimal Start
44
– An occupancy schedule can be one of the following:
property must be enabled (default).
– The controller monitors its
Occ Override Normal Logic State
learned heating capacity
recovery period from 1 to 4 hours in
routine runs, adjustments are based on the color that is achieved when occupancy begins.
Setpoints
.
– This function allows third party control of the controller occupancy.
Disable
must be set to
to use this function. When set to
is automatically disabled.
Remote
setting, the zone follows its normal occupancy
– This function gradually adjusts the unoccupied setpoints over a
Optimal Start
input that is typically connected
learned cooling capacity
and
Learning Adaptive
Learning Adaptive
. When the
Effective Set
Occupancy
Occupied
Unoccupied
or
VVT Zone Controller
,
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