34 VAV-SVX07F-EN
UC400 Controller Points and Parameters
• Calibrate Air Valve (Start Button): Displays the Calibrate Air Valve dialog box. Use this air
balancing tool to perform a basic two-point air balance for the Tracer UC400 controller. See the
Tracer TU Help for Programmable Controllers (“Configuring and Commissioning Equipment”
> “VAV Boxes” > “Using the Air Balancing Tool”) for the correct procedure.
Note: A full discussion of air balancing is beyond the scope of this document. Refer to the Air
Systems for Tracer SC Applications Guide (BAS-APG007).
• Airflow Override: Displays the Airflow Override
dialog box. The user can override the air
damper to open for a limited duration as part of a system water balancing operation. When the
timed duration expires, the water valve is released back to its normal setting.
• Wa
ter Valve Override: Displays the Wate
r Valve Override dialog box. The user can override
the water valve to open for a limited duration as part of a system water balancing operation.
When the timed duration expires, the water valve is released back to its normal setting.
• Fan Override: Displays the Fan Ov
erride dialog box, which can be used to override the fan
setting to On.
Note: F
or ECM fans, the user can also select the spee
d of when the fan turns on.
Operating Status
This box includes view only settings related to air flow. Two fan output settings can be overridden.
ECM Fan Setup
(Visible if an ECM fan is configured.) This box includes flow setpoint, maximum and minimum flow
settings, and a correction factor setting.
Current Calibration Summary
Presents the results of the two point air valve calibration along with the Minimum and Maximum
Air Flow Setpoints.
Discharge Air Reset Limits
This box contains settings that are used for Dual max VAV boxes. When the VAV’s heating valve
is open, the box flow will modulate between the flow settings to control to the Discharge Air Temp
Design Setpoint.
Configuration Screen
Application Selection
• Profile: This allows for selection between three operational programs. The three programs are
Space Temperature, Ventilation Flow, and Flow Tracking.
Equipment Options
• Box Size: Used to select a Trane F-style box size or Generic Box.
• Air Damper Opens: Ch
ose between Clockwise and Counter-Clockwise damper rotation to
open the damper.
• Fan Control: Choi
ces are None, Parallel, and Series. If Parallel or Series is selected the Fan
Setting group box will appear.
•
• Reheat Type:
Choose between reheat options of None, Hot Water, or Electric heat. If Hot Water
or Electric heat are selected the Reheat Settings group box will appear.
• Parallel Fan Control: Thi
s entry will determine if a parallel fan is controlled based on zone
temperature or on flow conditions. The entry field on this line will disappear if the unit does not
have a parallel fan.
To Next Page
Loading...
