WattMaster WCC II - Manual (Page 188)

Section 3: Screen Descriptions
WCC II Operator’s Guide
Operator Interfaces 3-156
they can be used for control of other devices. The “Analog Output”
is in the form of “Pn”.
“P” stands for “Proportional Output”
“n”
is the number of the TUC-VR Screen of “Analog Output”
The following are selected on the panel:
1. [Normal operating reheat] [time proportioned reheat]
2. [Parallel fan type] [Series fan type]
3. [Proportional control only] [Proportional w/integral control]
These messages are automatically displayed on the screen to show
you what the TUC-VR is set up to control. The different control
modes are selected by positioning the “FUNCTION” switches on
the TUC-VR.
4. Throttling range is [3.0] [6.0] °[F] [C]
The throttling range is the temperature span around the setpoint
that the primary air damper moves from maximum air fl ow to
minimum air fl ow. In other words, if the temperature setpoint is
74 °F with a 3 °F throttling range, the terminal unit would supply
maximum amount of air when the space temperature rises to
75.5 °F. The VAV terminal unit supplies the minimum amount of
air when the actual space temperature drops to 72.5 °F.
You have the choice of selecting either a 3 °F or 6 °F throttling
range. You also have the choice of selecting either Degrees
Fahrenheit or Centigrade.
Make your selection by placing the cursor over this entry and
pressing the
until the desired choice appears; then
press .
5. Rotate damper [CCW] [CW] on velocity increase
TUC-VR FUNCTION switch #8 specifi es the direction the TUC-
VR actuator will rotate to close the damper.
OFF = CW as viewed from the cover.
ON = CCW as viewed from the cover.