Temperature Setpoints - Johnson Controls TEC3023-14-000 Installation Manual

START-POS, COIL-TPR-TIME, DEHUM-OVRGLG-LIM, and
CHWST-SP.

Temperature setpoints

About this task:
The thermostat controller provides a flexible setpoint
configuration to give power to the building owner while
being easy to use by the occupant. In addition to a simple
up/down offset adjustment on the home screen for the
occupant, there are six temperature setpoints on the TEC.
The six temperature setpoints are Cooling and Heating
setpoints for Occupied, Unoccupied, and Standby modes.
To set these setpoints, complete the following steps:
1. Press the Menu icon.
2. Press Setpoints and then Temperature.
3. Select the setpoint to adjust and change as
preferred.
Press Save and the back arrow to return to the
4.
previous screen.
Note: The TEC enforces a 2-degree deadband
between heating and cooling setpoints. If a
setpoint violates this standard (for example,
cooling setpoint is set to 70 with a heating
setpoint already set to 70), the opposing
setpoint is modified to comply with this
deadband (in the previous example, the
heating setpoint would automatically change to
68).
Result
The occupant has access to an up/down adjustment from
the home screen. This adjustment applies a fixed offset
(+/-) to the currently active setpoint, and this offset holds
until the occupancy state of the controller changes. If
the user taps the setpoint on the home screen, the icon
inverts and displays white text on a black icon. The offset
is held throughout all occupancy periods. For example,
if the TEC is cooling in Occupied mode to an occupied
cooling setpoint of 72 and you raise the setpoint 2
degrees to 74 from the home screen and then select hold,
then the +2 degree offset persists through an occupancy
change. If the occupancy then changes to unoccupied,
with a setpoint of 80 degrees, the effective setpoint is 82
degrees. This allows the occupant to have a small amount
of control over raising or lowering the temperature, but
the building owner can still set back setpoints during
standby and unoccupied periods. When the setpoint is in
Hold mode, pressing the icon again releases the hold and
immediately sets the setpoint offset back to 0.
When the TEC is in Min/Max mode (Setpoints/Occ
Setpoint Select are equal to Min and Max Setpoint), the
TEC rejects any attempts to change the present value
outside of the valid range. If the present value is outside
of the valid range (for example, if the Occ Setpoint Select
is switched from Setpoint Offset to Min and Max Setpoint),
the present value is reset to be in the center of the valid
range.
The four modes of setpoint operation are described in the
following table.
18 TEC3000 Series Proportional Fan Coil Thermostats Installation Guide
Table 8: 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 applies 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 > Temperature > Min Cooling
Setpoints
and Heat Setpoint, Max Cooling Setpoint, Min
Cool Heating Setpoint, and Max Heating
Setpoint). The configurable range values
Setpoint
Mode = are bounded by the larger constant
Individual bounds used in Setpoint Offset mode and
Setpoints are 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 only
Heat Cool applies 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