Orion-system VCC-X Controller Manuale Utente Scaricare il pdf (Pagina 78)

VAV/ZONE DAMPER FORCE

VCC-X Operator Interface SD78

VAV/Zone Damper Force Modes

Damper Force Modes

Damper Force Modes are available for testing or balancing the sys-

tem. These Force Modes can be accessed and programmed from

the Modular Service Tool.

Modular Service Tool Instructions

When using the Modular Service Tool, simply press the <BAL-

ANCE - TEST>

key. You will then see the Unit ID Screen. Enter the

unit ID of the controller you wish to access and

press <ENTER>.

Once communication is established, the *00* message will go away.

Then

press <>.

NOTE: If the *00* remains, it indicates a communication

failure to the controller.

The following screen will be displayed:

Damper Force

Para Blocks

Load / Save / Copy

With the cursor on Damper Force, press <ENTER> to access the

Damper Force Mode Screen.

Dampers Force Mode Screen

If the unit ID you entered is for a VCC-X 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 VCC-X Controller’s communication

loop will be forced to the same Damper Force Mode setting. If the

unit ID you entered is for a VAV/Zone Controller, the Damper Force

Mode setting will only apply to that VAV/Zone Controller.

Damper Force

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. Following is a list of the force modes and their meaning:

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 its fully-

closed position.

3 = Max This setting will force the damper to its

Maximum Position Setpoint. See VAV/Zone

Controller Setpoint Screen #5 on page 73 for

complete setpoint information.

4 = Min This setting will force the damper to its

Minimum Position Setpoint. See

VAV/Zone

Controller Setpoint Screen #5

on page 73 for

complete setpoint information.

5 = Fixed This setting will force the damper to a ﬁ xed

position based on the Fixed Position Setpoint.

See

VAV/Zone Controller Setpoint Screen #8

on page 74 for complete setpoint information.

CAUTION: The Damper Force Modes should only be used

by qualiﬁ ed service personnel. Serious dam-

age to the ductwork could result if the dampers

are all forced closed and the HVAC unit fan

is operating.

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 95 96

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Orion-system VCC-X Controller Manuale Utente Pagina 78

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