Orion System VAV II Controller v.1 - Manual (Page 65)

TROUBLESHOOTING
65
VAV/CAV/MUA Operator Interface SD
VAV/CAV/MUA II Outputs Force
Outputs Force
Outputs Force settings are available for testing or troubleshooting the
system. These Force settings can only be accessed and programmed
from the Modular Service Tool. The System Manager does not allow
for programming of this function.
CAUTION: The Outputs Force settings should only be applied
by qualifi ed service personnel. Serious damage to
the HVAC unit could result from improper use of
these Outputs Force settings.
To access the Outputs Force settings, simply press the
TEST>
button on the Modular Service Tool SD. You will then see the
Unit ID Screen.
Unit Selection*00*
Enter Unit ID#
Selected ID#: XXXX
Enter the unit ID of the Unit Controller you wish to access and press
. Once communication is established, the *00* message
will go away. Then press <

> . You will then see the screen shown
below. Press to save entered data and press <

> to scroll
through the screens.
NOTE:
If the *00* remains, it indicates a communication failure
to the controller.
NOTE: The Outputs Force settings are only available for the VAV/
CAV/MUA II Controller. They are not supported for the
VAV/Zone Controllers or other Add-on controllers.
Outputs Force
Para Blocks
Save / Load / Copy
Place the cursor on Outputs Force and press to access the
Outputs Force Screen.
Supply Fan Override
Auto
Use < Or > To Change
The fi rst Outputs Force Screen allows the AHU fan relay to be set for
Auto, Force On, or Force Off. The default setting is Auto. After you
complete all troubleshooting or testing procedures, all relays should be
changed back to this setting. The Force On setting will force the relay
to the ON (energized) position. The Force Off selection will force the
relay to the OFF (de-energized) position.
The next screen displays the Relay Overrides for Relay 2. After press-
ing
to save any changes, press <

> to have the next relay
displayed. All 20 Relay Override Screens (including the AHU fan relay)
are available by pressing
<  >
after each setting is saved by pressing
.
Relay Overrides
Relay 2 Override
Auto
Use < Or > To Change
After the screen for relay 21 is displayed, the fi rst Analog Output #1
Override Screen will be displayed.
VAV/CAV Analog Output #1 Screen
Economizer Overrides
Analog Output #1
Override Volts: -1.0
[ -1.0 = Auto ]
MUA II Analog Output #1 Screen
Mod External Heat
Analog Output #1
Override Volts: -1.0
[ -1.0 = Auto ]
The default setting for normal operation is -1.0 volts. Voltages between
0 to 10.0 can be set for any of the Analog Output Overrides. Press
after making a setting change and then press
<  >
and the
next Analog Output Override Screen will be displayed.
VAV/CAV Analog Output #2 Screen
Supply VFD Override
Analog Output #2
Override Volts: -1.0
[ -1.0 = Auto ]
VAV/CAV Analog Output #3 Screen
Relief VFD Override
Analog Output #3
Override Volts: -1.0
[ -1.0 = Auto ]