VCB-X Operator Interface SD
VCB-X CONFIGURATION
33
All Modes Occupied
—This is Occupied Mode
Dehumidi
fi
cation Priority. The unit can enter
Dehumidi
fi
cation during Cooling, Heating, or Vent Modes,
but only while in Occupied operation.
All Modes Anytime
—This is Occupied and
Unoccupied
Dehumidi
fi
cation Priority. The unit can enter
Dehumidi
fi
cation during Cooling, Heating, or Vent Modes
while in Occupied or Unoccupied operation.
For units controlled by space humidity sensors, Dehumidi
fi
cation is
initiated based on an Indoor Humidity Setpoint. For 100% OA units
(MUA), Occupied Dehumidi
fi
cation is initiated based on an Outdoor Air
Dewpoint Setpoint. For MUA units, Unoccupied Dehumidi
fi
cation can
only occur if the unit is con
fi
gured for Night Setback recirculating opera-
tion and has a Space Humidity sensor and a Space Humidity Setpoint.
Con
fi
guration Screen #41 - Humidity Control
Sensor Type
VCBX Cnfg ID 101
Humidity Control
Sensor: Space
Use < Or > To Change
Select
Space, Return, or Outdoor if an E-BUS Humidity Sen-
sor is installed. Can receive a Space Humidity broadcast from a
GPC-XP if value in
Con
fi
guration Screen #43
is selected as NO.
Default is Space.
Con
fi
guration Screen #42 - Suction Pressure
Sensor Installed
VCBX Cnfg ID 101
Suction Pr Sensor
Installed: NO
Use < Or > To Change
Select
YES if you have a Suction Pressure Sensor Installed
.
Default
is NO.
Con
fi
guration Screen #43 - E-BUS Space &
Humidity Sensor Installed
VCBX Cnfg ID 101
E-BUS SPC/RH Sensor
Installed: NO
Use < Or > To Change
Select
YES if you have an E-BUS Space and Humidity Sensor installed
.
Set this to NO if receiving a Space Humidity Broadcast from a GPC-XP
Controller.
Default is NO.
VCB-X Con
fi
guration Screens
Con
fi
guration Screen #44 - Reheat Type
VCBX Cnfg ID 101
Reheat Control
None
Use < Or > To Change
This con
fi
guration option is available if expansion module EM1 has been
installed and con
fi
gured and if Dehumidi
fi
cation has been con
fi
gured. If
you need Reheat in the Dehumidi
fi
cation mode, this screen allows you
to con
fi
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 dehumidi
fi
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 then Unit Heat
—Using MHGR as the 1
st
form of Reheat, supplemented by unit Heat if necessary.
On/Off HGR then Unit Heat
—Using “Reheat Relay”
stage as the 1
st
form of Reheat, supplemented by unit Heat
if
necessary.
Con
fi
guration Screen #45 - Defrost Coil
Switch
VCBX Cnfg ID 101
Defrost Coil Switch
NO
Use < Or > To Change
Select
YES if a Defrost Coil Temperature Switch is installed and is
connected to the Defrost Coil Temperature Switch binary input. If this
switch closes, it will initiate a Defrost Mode.
Default is NO.
Con
fi
guration Screen #46 - Head Pressure
Control
VCBX Cnfg ID 101
Head Pr. Control:
NO
Use < Or > To Change
This con
fi
guration option is available if expansion module EM1 has
been installed and con
fi
gured and if Head Pressure Control is required.
Default is NO.
