Setting The Control Mode; Configuring The Zone Space Or Equipment Size; Temperature Setpoints - Johnson Controls TEC3000 Series Quick Start Manual

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Installer configuration menu
The thermostat controller comes from the factory with
default settings for all configuration parameters. Before
any outputs turn on, the controller must be configured
for the equipment connected. You need to start from the
home screen to perform any of the following tasks.
Screen reset
The current screen returns to the home screen and turns
off if the current screen is not touched for 3 minutes.
Touch the screen to turn it on again. To disable the
screensaving option, press Display Settings and set
Enable Display Timeout to No.
Selecting Rooftop or Heat Pump mode
By default, the thermostat controller is configured for
Rooftop mode. This mode is used for up to two discrete
stages of heating (W1, W2) and up to two discrete stages
of cooling (Y1, Y2). Certain heat pumps do not require an
O/B input and instead take standard W and Y commands
as heat or cool commands, internally sequencing the
equipment. For these type of heat pump units, leave the
controller in Rooftop mode.
When in heat pump mode, the TEC controls up to two
stages of compressors (Y1, Y2) for both heating and
cooling. O/B is controlled through the W1/OB output and
one stage of supplemental heat is controlled through the
W2/SUP output.
Configuring economizer
The TEC supports three methods of determining
economizer availability. These are Dry Bulb, Single
Enthalpy, and Dual Enthalpy, in increasing order of
accuracy. To run an economizer, outdoor air temperature
(OAT) is required to run in Dry Bulb mode. This can be
provided by connecting a sensor to the OAT input on the
TEC. It also can be provided by writing to NET-OAT from
a Building Automation System (BAS), which overrides
the internal sensor. If Outdoor Air Humidity (OAH) is
also provided by writing to NET-OAH, the single enthalpy
method is used to determine if economizer cooling should
be used. If a Zone or Return Humidity is also provided, the
dual enthalpy method is used.
All network overrides to the TEC work on a timeout basis.
If the value is written to, it remains active as long as the
BAS writes a new value within 15 minutes of the first one.
If the 15-minute timeout occurs without getting any data
written, the TEC stops using the network data.
When operating in Dry Bulb or Single Enthalpy mode,
it is necessary to provide a Dry Bulb Setpoint or an OA
Enthalpy Setpoint, respectively. The TEC ships with default
values set, but depending on climate it may be necessary
to change these.
14 TEC3000 Series Networked and Wireless Single- or Two-stage Economizer Thermostat Controllers Quick Start Guide

Setting the Control mode

The Control Mode informs the controller to run in Cooling
only, Heating only, or Automatic mode, based on the
temperature in the zone relative to the heating and
cooling setpoints. Control Mode does not override
equipment lockouts or changeover.
Setting the Fan mode - fan coil only
The Fan Mode informs the controller how to handle
the fan. There are two options for fan configuration: a
Fan Mode available to the installer through the menu
system, and a fan override available as an option to the
end user from the Fan icon on the home screen. See
Customizing the home screen
and disabling end-user controls. The Fan Mode available
to the installer is dependent on the fan type. The following
options are provided for single-speed fans:
• On—Fan is continuously on
• Auto—Fan cycles on demand with the controller
entering cooling, heating, or dehumidification modes
• Smart—Fan cycles on demand with the controller
entering cooling or heating modes during unoccupied
periods but is continuously running during occupied
and standby periods
The Fan Override icon on the home screen depends
on the fan type. The following options are provided for
single-speed fans:
• On—Overrides the fan to be continuously on
• Auto—Follows the behavior set as Fan Mode
• Quiet—Follows the behavior set as Fan Mode, but
prevents the fan from ever going above minimum
speed. The Quiet option has no effect on equipment
with single-speed fans.
Configuring the zone space or
equipment size
With non-binary outputs, the TEC3000 is configured by
default to have a slower temperature response for larger
zones with normal-sized equipment. In installations with
small zones and oversized equipment, set the Equipment
Size parameter to Oversized.

Temperature setpoints

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.
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).
The four modes of setpoint operation are described in
Table 6.
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