Install Instructions

TEC3000 Series Networked and Wireless On/Off or Floating Fan Coil and Individual Zone Thermostat Controllers
with Dehumidification Capability Installation Guide
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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:
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.
You need to 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.
Dehumidification control - fan coil only
The TEC3000 controller support dehumidification control on fan coil devices under three configurations:
• Four-pipe fan coil
• Four-pipe fan coil with reheat
• Two-pipe fan coil (with changeover in cooling mode) with reheat
For optimal dehumidification performance, a 4-pipe unit with floating/incremental or 0 to 10 V control and a multi-
speed or variable-speed fan is recommended.
Dehumidification operates when the zone humidity increases above the zone humidity setpoint and the controller is
in the Idle or Cooling state. Dehumidification does not operate during heating and stops if the zone temperature
drops below the heating setpoint. 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 the cooling setpoint. While in
the dehumidification mode, a multi-speed or variable-speed fan runs at the lowest possible speed to maximize
condensation and moisture removal across the cooling coil.
To enable dehumidification control:
1. Press the Menu icon.
2. Press Setup.
3. Press General Control Setup.
4. Press Dehum Enable and select Yes.
5. Press Save and the back arrow
to return to the previous screen.
This point is also exposed to the BAS through the point DEHUM-EN.
To adjust the dehumidification setpoint:
1. Press the Menu icon.
2. Press Setpoints.
3. Press Dehumidification and adjust accordingly.