Configuring The Zone Space Or Equipment Size - Johnson Controls TEC3023-14-000 Installation Manual

• 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- and variable-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.
The following Fan Override options are provided for multi-
speed fans:
• Low—Fan is continuously on low
• Medium—Fan is continuously on medium
• High—Fan is continuously on high
• 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
To set the Fan Mode, complete the following steps:
1. Press the Menu icon.
2. Press Setup.
3. Press General Setup.
4. Press Fan Mode and select On, Auto, or Smart.
5. Press Save and the back arrow to return to the
previous screen.
Configuring the zone space or
equipment size
About this task:
With non-binary outputs, the TEC3000 default
configuration is 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.
To set the Equipment Size parameter, complete the
following steps:
1. Press the Menu icon.
2. Press Control Setup.
Press Tuning.
3.
4. Use the up and down arrows to navigate to
Equipment Size.
5. Press Equipment Setup and select Oversized.
6. Press Save and the back arrow to return to the
previous screen.
Changeover
About this task:
Pressure-Dependent VAV systems and two-pipe fan
coils require changeover detection in order to switch
seasonal operation between heating and cooling
modes. The TEC supports the following methods for
16 TEC3000 Series Proportional Fan Coil Thermostats Installation Guide
changeover: automatic changeover using an analog
sensor (thermistor), automatic changeover using a binary
switch, or remote changeover from a BAS and manual
changeover.
For automatic changeover, a supply temperature sensor
or switch must be connected to the Changeover Sensor
(COS) input of the TEC. Changeover Mode must be set
to Auto, and Supply Temp Type must be set for Analog
Sensor, Cooling N.C. (cooling when switch is closed), or
Heating N.C. (heating when switch is closed). When you
use an analog sensor, you can adjust the changeover
setpoint. The changeover logic applies a 10°F differential
to the setpoint. The system switches to cooling mode
when the temperature drops below the changeover
setpoint and remains in cooling mode until the measured
temperature has risen 10 degrees above the changeover
setpoint.
To configure automatic changeover, complete the
following steps:
1. Press the Menu icon.
2. Press Setup.
3. Press Equipment Setup.
4. Press Changeover.
5. Press Changeover Mode and select Auto.
6. Press Supply Temp Type and select Analog Sensor,
Cooling N.C., or Heating N.C.
7. If using an Analog Supply Temp Sensor, press Supply
Temp Type and adjust accordingly.
8. Press Save and the back arrow to return to the
previous screen.
Additionally, the thermostat controller supports manual
changeover. To configure manual changeover, complete
the following steps:
1. Press the Menu icon.
2. Press Setup.
3. Press Equipment Setup.
4. Press Changeover.
5. Press Changeover Mode and select Heating or
Cooling.
6. Press Save and the back arrow to return to the
previous screen.
Ensure that the Supply Temp type is set to Analog Sensor.
The Changeover Mode is also exposed to the BAS through
the CGOVR-MODE and can be commanded from the BAS.
On two-pipe or VAV systems without an automatic
changeover, or on four-pipe systems, you can use RSEN
or COS as a monitor-only point for reading an analog
sensor. By setting the controller in four-pipe mode, or
selecting Heating or Cooling for Changeover Mode, the
controller defaults to monitor-only mode for RSEN or
COS and exposes the value to the network as the supply
temperature.