Orion System VCM - Manual (Page 48)

Technical Guide
Operator Interfaces 48
1)Outputs Force
2)Dampers Force
Press the “2” key to access the Damper Force Modes screen. Outputs
Force is not available with the System Manager.
Modular Service Tool Instructions
When using the Modular Service Tool simply press the “Balance-Test”
key. You will then see the unit ID screen. Enter the unit ID of the con-
troller you wish to access and press "Enter". The damper force modes
screen will be displayed.
1)Outputs Force
2)Dampers Force
Press the “2” key to access the Damper Force Modes screen. Outputs
Force is available with the Modular Service Tool but is not used with
the VAV/Zone controller.
Damper Force Mode Screens
If the unit ID you entered is for a VCM controller that has VAV/Zone
controllers connected to its communication loop, the Damper Force
Mode will act as a “Global” Damper Force Mode. That is, all VAV/
Zone controllers on that VCM controllers communication loop will be
forced to the same Damper Force Mode setting. If the unit ID you en-
tered is for a VAV/Zone controller, the Damper Force Mode setting will
only apply to that VAV/Zone controller.
Damper Force ID 159
Enter Force Mode: 0
0=Auto 1=Open 2=Clsd
3=Max 4=Min 5=Fixed
Set the appropriate Damper Force Mode by entering numbers 0 through
5. The Force Modes for each of these settings is outlined below.
0 = Auto This is the default setpoint. With this setting
the damper will operate normally and modulate
according to the controller setpoints.
1= Open This setting will force the dampers to their fully
open position.
2= Clsd This setting will force the damper to it’s fully
closed position.
3= Max This setting will force the damper to the dampers
maximum airflow position set under Setpoint
Screen #4
4= Min This setting will force the damper to the current
modes, minimum position setpoint. These modes
are Vent Mode, Heat Mode and Cool Mode. They
may each have a different minimum depending on
how you configured the setpoints.
5=Fixed This setting will force the damper to a fixed
position based on the fixed position setpoint.
See VAV/Zone controller Setpoint Screen #7 for
available setpoint information.
Caution: The Damper Force Modes should only be used by quali-
fied service personnel. Serious damage to the ductwork
could result if the dampers are all forced closed and
the HVAC unit fan is operating.
Programming The VAV/Zone Controller