WattMaster WCC III part 5 - Manual (Page 18)

WCC III Technical Guide 4-16
4. SCUSCR.EXE SCREENS
Force Modes or Overrides
The VAVBOX TUC-2R controller damper can be forced to
one of several positions. These force modes aid the user during
troubleshooting or air balancing, etc.
•
Force Damper Full Open (Ignores Airfl ow
Reading)
•
Force Damper Full Closed (Ignores Airfl ow
Reading )
•
Force to Maximum Airfl ow/Damper Setpoint
•
Force to Minimum Airfl ow/Damper Setpoint (for
the current Supply Air Mode)
•
Force to Fixed Airfl ow/Damper Setpoint
•
Force Damper to Re-Calibrate
The Force to Fixed Airfl ow/Damper mode also has a setpoint
associated with it. This allows the user to provide a non-changing
fi xed amount of air into the space that doesn’t affect the Minimum
or Maximum setpoints. That means the user doesn’t have to disturb
the real minimum and maximum setpoints to achieve a nonstandard
setting during their troubleshooting or air balancing modes.
The Force to Minimum mode uses the currently active minimum
setting based on the Supply Air Neutral, Cooling, or Heating
modes. Whatever mode the VAVBOX TUC-2R controller is in sets
the minimum used by the force mode.
The damper force modes will remain in effect until cancelled by the
user or until the power is removed. There are no force commands
available for the auxiliary relays.
Fan
Parallel
Fan
Heat
WCC III VAV BOX III Force Modes