TEC3000 Series On/Off or Floating Fan Coil and Individual Zone Thermostat Controllers with Dehumidification
Capability Installation Instructions
20
Selecting the Heating and Cooling Device Type
By default, the thermostat is configured for On-Off (2-position) control. This can be changed to Floating
(Incremental) mode when the Unit Type is not set to VAV. For VAV mode, only floating actuators are supported
and this option is unavailable. To change the Heating/Cooling Device Type:
1.
Press the
Menu
icon.
2.
Press
Equipment Setup
.
3.
Press
General.
4.
Press
Htg/Clg Device Type
and select
On-Off
or
Floating
. Changing this option reboots the controller in
order to apply the change.
5.
Press
to save and
to return to the previous screen.
When in Floating mode, the Actuator Stroke Time must also be set to match the equipment. To set the actuator
stroke time:
1.
Press the
Menu
icon.
2.
Press
Equipment Setup.
3.
Press
General
.
4.
Press
Actuator Stroke Time
and adjust accordingly.
5.
Press
to save and
to return to the previous screen.
Configuring the Supply Fan - Fan Coil Only
On fan coil units (2-pipe or 4-pipe), three different types of supply fans are supported. These are single-speed fans,
multi-speed fans (up to three discrete speeds), and VSF using a 0 to 10 V control signal and an optional binary on/
off command. Note that fan control is not available when in VAV mode. To select the fan type:
1.
Press the
Menu
icon.
2.
Press
Equipment Setup
.
3.
Press
Supply Fan
.
4.
Press
Supply Fan Type
and select
Single Speed
,
Multi-Speed
, or
Variable Speed
.
5.
Press
to save and
to return to the previous screen.
For multi-speed fan control, you can adjust the point when the medium or high speed turns on. The fan speed is
based on the load on the cooling/heating device, and is a percentage between 0 and 100. By default, the Med
Speed On Cmd is 33% and the High Speed On Cmd is 66%. When only two fan speeds are used, you must set the
High Speed On Cmd to 100% to disable the third speed and set the Med Speed On Cmd to 50%. To adjust these
values:
1.
Press the
Menu
icon.
2.
Press
Equipment Setup.
3.
Press
Supply Fan
.
4.
Press
Medium Speed On Cmd
and adjust accordingly.
5.
Press
High Speed On Cmd
and adjust accordingly.
6.
Press
to save and
to return to the previous screen.