Orion System VCC-X Controller - Manual (Page 42)

VCC-X SETPOINTS
VCC-X Operator Interface SD 42
Setpoint Screen #6 - Space Sensor
Push-Button Override Duration
VCC-X Spts ID:#
Space Sensor Push
Button Override
Duration: 2.0Hr
If the VCC-X has a Space Temperature Sensor installed and it has
the Override Button option, the HVAC unit will initiate Override
Mode any time the Override Button is pressed and held for less than
3 seconds. This puts the unit into Occupied operation. The Push-
Button Override Duration Setpoint allows you to adjust the amount
of time the Override will remain in effect when the Override Button
is pressed. To cancel the Override before the Override Duration
time period expires, press the Override Button for 5 to 10 seconds.
If using a Digital Space Sensor, pushing the Override Button mo-
mentarily will initiate the Override Mode.
Description Minimum Default Maximum
Space Sensor
Push-Button
Override Duration 0.0 Hr 2.0 Hr 8.0 Hr
Setpoint Screen #7 - Controlling Sensor High
Alarm Offset
VCC-X Spts ID:#
Controlling Sensor
High Alarm Offset
Setpoint: 30.0ºF
If the Temperature of the controlling sensor rises above the Occupied
Cooling Setpoint by this amount during the Cooling Mode, the con-
troller will generate a High Control Temp Alarm. The unit must be
confi gured for Space Temperature Control, Return Air Temperature
Control, or as a Single Zone VAV unit for this alarm to be generated.
Description Minimum Default Maximum
Controlling Sensor
High Alarm Offset 0ºF
(0 º C)
30ºF
(16.6ºC)
50ºF
(27.7ºC)
VCC-X Setpoint Screens
Setpoint Screen #8 - Controlling Sensor Low
Alarm Offset
VCC-X Spts ID:#
Controlling Sensor
Low Alarm Offset
Setpoint: 30.0
If the Temperature of the controlling sensor falls below the Occupied
Heating Setpoint by this amount during the Heating Mode, the con-
troller will generate a Low Control Temp Alarm. The unit must be
confi gured for Space Temperature Control, Return Air Temperature
Control, or as a Single Zone VAV unit for this alarm to be generated.
Description Minimum Default Maximum
Controlling Sensor
Low Alarm Offset 0ºF
(0 º C)
30ºF
(16.6ºC)
50º F
(27.7ºC)
Setpoint Screen #9 - Outdoor Dewpoint
Setpoint
VCC-X Spts ID:#
Outdoor Dewpoint
Setpoint: 55.0ºF
On MUA confi gured units (100% or high percentage Outdoor Air
units), or if this is a unit in Hood On MUA operation, Dehumidifi ca-
tion will be initiated if the Outdoor Air Dewpoint rises above this
setpoint. If the humidity falls 1% below this setpoint, the unit will
leave the Dehumidifi cation Mode.
Description Minimum Default Maximum
Outdoor Dewpoint
Setpoint 35ºF
(1.7 º C)
55ºF
(12.8ºC)
80ºF
(26.6ºC)