Overriding The Occupancy Mode; Enabling Optimal Start; Dehumidification Control - Johnson Controls TEC3000 Series Quick Start Manual

Table 6: Setpoint operation
Mode of Details
setpoint
operation
Occ Setpoint This is the default mode and the original
Select = mode of operation that the TEC was
Setpoint released with (the next three modes are
Offset and new). In this mode, the TEC has a heating
Heat Cool setpoint and a cooling setpoint. There is a
Setpoint common Setpoint Offset (warmer/cooler
Mode = adjust) that is applied to each setpoint
Individual simultaneously. The range of setpoint
Setpoints adjustment is two-fold:
• There are large constant ranges
bounding the individual heating and
cooling setpoints.
• There is also a smaller configurable
range limit set to the Setpoint Offset
point (Control Setup > General > Max
Setpoint Offset).
Occ Setpoint In this mode, the TEC has a heating
Select = Min setpoint and a cooling setpoint. Each
and Max setpoint has a configurable range
(Setpoints > Min Cooling Setpoint,
Setpoints
and Heat Max Cooling Setpoint, Min Heating
Cool Setpoint, and Max Heating Setpoint).
Setpoint The configurable range values are
Mode = bounded by the larger constant bounds
Individual used in Setpoint Offset mode and are
Setpoints constrained in the following manner:
Min must be below Max and Heating
must be below Cooling, so in order from
least to greatest, the values are: Min
Heating Setpoint, Max Heating Setpoint,
Min Cooling Setpoint, and Max Cooling
Setpoint.
Occ Setpoint In this mode, the TEC has one setpoint,
Select = Common Setpoint, for heating and
Setpoint cooling. There is also a common Setpoint
Offset and Offset (warmer/cooler adjust) that is only
Heat Cool applied to Common Setpoint. Otherwise,
Setpoint this setting works the same as when Occ
Mode = Setpoint Select = Setpoint Offset and Heat
Common Cool Setpoint Mode = Individual Setpoints.
Setpoint
Occ Setpoint In this mode, the TEC has one setpoint,
Select = Min Common Setpoint, for heating and
and Max cooling. There is a configurable range for
Setpoints Common Setpoint, Min Setpoint, and Max
and Heat Setpoint.
Cool
Setpoint
Mode =
Common
Setpoint
Scheduling (for all models)
The occupancy schedule comes from either the weekly
scheduler built into the TEC or as an input from the
BAS. The Schedule Source must be selected to tell the
controller where to read the occupancy source from.
TEC3000 Series Networked and Wireless Single- or Two-stage Economizer Thermostat Controllers Quick Start Guide
Setting the local schedule
A weekly occupancy schedule with up to four occupancy
events for each day can be set locally on the TEC and
operate independently of a supervisor. See
(for all models) to ensure the schedule source is set to
Local.
Important: Internally, the TEC3000 uses a BACnet
schedule where daily schedules are independent of
the previous and next days. The default occupancy
of the TEC3000 from the factory is set to Occupied.
As a result, a daily event at 12:00 AM must be
scheduled if you do not want the controller to
transition to Occupied Mode at midnight.

Overriding the Occupancy mode

The TEC supports a manual override of all other schedule
sources (for example, Schedule, Occupancy BI, and
temporary occupancy).

Enabling optimal start

The TEC supports an advanced optimal start algorithm.
The algorithm works in conjunction with a local schedule
to pre-heat or pre-cool the zone before scheduled
occupancy periods begin, in order to bring the zone
to the required occupied setpoint when the scheduled
occupancy period begins. Occupant comfort is ensured
while automatically minimizing energy usage. This
algorithm creates a model of the zone being controlled
and automatically determines when to start the
equipment before the scheduled transition to Occupied.
The start time automatically adjusts daily to minimize the
time between reaching setpoint and entering Occupied
state.
Note: Optimal Start does not work when the
schedule source is set to External.
Enabling the motion sensor (TEC3x31
Models)
On models with integral motion sensing capability, the
motion sensor is enabled with a default timeout of 15
minutes from the last detection of motion in the zone.
On models without an integrated sensor, the default
timeout is still 15 minutes, but it only is applied when one
of the two configurable binary inputs is set to be a motion
sensor (see TEC3000 Series Networked and Wireless Single-
or Two-Stage Economizer Thermostat Controllers Installation
Guide LIT-12013163 for information about configuring the
binary inputs). To disable motion sensing capabilities, set
the Motion Sensor Timeout to 0 minutes.

Dehumidification control

Dehumidification operates when the zone humidity
increases above the humidity setpoint and the controller
is in a satisfied state with no active call for cooling or
heating. When dehumidification is active, the cooling
device controls to the humidity setpoint, and the heating
device reheats the zone in order to keep the temperature
at setpoint.
The TEC3000 controller supports dehumidification control
under the following configurations:
• RTU with an auxiliary dehumidifier wired to Aux output
Scheduling
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