TEC3000 Series On/Off or Floating Fan Coil and Individual Zone Thermostat Controllers with Dehumidification
Capability Installation Instructions
21
For VSF control, the output is configurable for any range between 0 V and 10 V. The parameters are Start Voltage,
Full Speed Voltage, and Minimum Command. Start Voltage is the voltage output at which the fan begins running,
and Full Speed Voltage is the voltage output at which the fan reaches full speed. Minimum Command is the
percentage of the range between the Start Voltage and the Full Speed Voltage. The fan does not go below the
minimum command when the fan is turned on. By default, the Start Voltage is 2 V, the Full Speed Voltage is 10 V,
and the Minimum Command is 20%.
When the variable speed fan is off, the FAN binary output is off and the voltage at the VSF output is 0 V. When the
fan turns on, the FAN binary output turns on and the voltage at the VSF output begins controlling the fan. When the
VSF is configured for reverse acting mode (Start Voltage is above Full Speed Voltage), the VSF output goes to the
lesser of 10 V and 1 V above the Start Voltage when the fan is turned off.
To configure the variable speed parameters:
1.
Press the
Menu
icon.
2.
Press
Equipment Setup.
3.
Press
Supply Fan
.
4.
Press
Start Voltage
and adjust accordingly.
5.
Press
Full Speed Voltage
and adjust accordingly.
6.
Press
Minimum Command
and adjust accordingly.
7.
Press
to save and
to return to the previous screen.
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. To set the Control Mode:
1.
Press the
Menu
icon.
2.
Press
Control Setup
.
3.
Press
General
.
4.
Press
Control Mode
and select
Cooling
,
Heating
, or
Auto
as desired.
5.
Press
to save and
to return to the previous screen.
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
for information on enabling 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-and variable-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 following Fan Mode options are provided for multi-speed fans:
•
Low—Fan is continuously on low
•
Medium—Fan is continuously on medium
