Orion System VCC-X Controller - Manual (Page 32)

Zone
Zone
VCC-X CONFIGURATION
VCC-X Operator Interface SD 32
Confi guration Screen #39 - Exhaust Fan
Output
VCC-X Cnfg ID #
Exh Fan Volts
Min Volts: 0.0VDC
Max Volts: 10.0
VDC
This confi guration option is available if Modulating Building Pres-
sure Control was confi gured on a previous screen. The following
will set the output voltage range for both Direct and Reverse Acting
Building Pressure Control. Defaults are 0 VDC Min Volts and 10
VDC Max Volts. Available options are:

Min Volts —Voltage at which the signal to exhaust fan,
exhaust damper, or OA damper will be at 0% for either
Direct or Reverse Acting Building Pressure control.

Max Volts —Voltage at which the signal to exhaust fan,
exhaust damper, or OA damper will be at 100% for
either Direct or Reverse Acting Building Pressure
control.
Description Minimum Default Maximum
Minimum Position Volts 0.0 0.0 10.0
Maximum Position Volts 0.0 10.0 10.0
Confi guration Screen #40 - Dehumidifi cation
Control
VCC-X Cnfg ID #
Dehum. Control:
None
USE < or > TO CHANGE
If using Dehumidifi cation choose the appropriate Dehumidifi cation
option. Default is None. Available options are:

None —The unit does not have a Dehumidifi cation
Mode.

Only Occupied Vent —The unit can only enter
Dehumidifi cation during the Occupied Vent Mode (when
there is no call for Cooling or Heating).

Only Vent Anytime —The unit can only enter
Dehumidifi cation during the Vent Mode (when there
is no call for Cooling or Heating) in both the Occupied
and Unoccupied operation.

All Modes Occupied —This is Occupied Mode
Dehumidifi cation Priority. The unit can enter
Dehumidifi cation during Cooling, Heating, or Vent
Modes, but only while in Occupied operation.
VCC-X Confi guration Screens

All Modes Anytime —This is Occupied and
Unoccupied Dehumidifi cation Priority. The unit can
enter Dehumidifi cation during Cooling, Heating, or Vent
Modes while in Occupied or Unoccupied operation.
For units controlled by space humidity sensors, Dehumidifi cation
is initiated based on an Indoor Humidity Setpoint. For 100% OA
units (MUA), Occupied Dehumidifi cation is initiated based on
an Outdoor Air Dewpoint Setpoint. For MUA units, Unoccupied
Dehumidifi cation can only occur if the unit is confi gured for Night
Setback recirculating operation and has a Space Humidity sensor
and a Space Humidity Setpoint.
Confi guration Screen #41 - Humidity Control
Sensor Type
VCC-X Cnfg ID #
Humidity Control
Sensor: Space
USE < or > TO CHANGE
Select Space, Return, or Outdoor if an E-BUS Humidity Sensor is
installed. Default is Space.
Confi guration Screen #42 - Reheat Type
VCC-X Cnfg ID #
Reheat Control
None
USE < or > TO CHANGE
This confi guration option is available if Dehumidifi cation has been
confi gured. If you need Reheat in the Dehumidifi cation mode, this
screen allows you to confi gure what kind of reheat will be used.
The output(s) will be staged or modulated to maintain the Active
Supply Air Setpoint. Default is None. Select
the type of reheat that
will be used during dehumidifi cation.

None —No reheat.

On/Off HGR Relay —Single On/Off Reheat stage
(Reheat Relay).

Mod HGR —Modulating Hot Gas Reheat (MHGR)

Unit Heat —Using the unit’s heat as Reheat when Hot
Gas Reheat is not available.

Mod HGR + Unit Heat —Using MHGR as the 1 st
form of Reheat, supplemented by unit Heat if necessary.

On/Off HGR + Unit Heat —Using “Reheat Relay”
stage as the 1 st form of Reheat, supplemented by unit
Heat if necessary.