VCB-X Controller Field Technical Guide
INDEX
113
U
Unit Selection Screen..........91,92
Unload LED..........80
UNLOAD LED..........78
Unoccupied Mode of Operation..........61
Unsafe Suction Pressure Detection..........73
USB-Link 2 Kit..........11
User-Con
fi
gurable Relay Outputs..........58,60
V
VA Load Requirements..........19
Variable Air Volume Unit Overview..........6
Variable Frequency Drive Units..........33
VAV Cooling..........67
VAV Dehumidi
fi
cation..........6
VAV Heating..........67
VAV/Zone Controller Alarms..........77
VCB-X 12 Relay E-BUS Expansion Module
Described..........8
Dimensions..........17
Overview..........5
VCB-X Controller..........8
Alarms..........74
Coil Temperature Switch Input..........57
Components..........18
Con
fi
guring..........55
Described..........8
Digital Compressor Discharge Temperature Sensor
Input..........57
Digital Compressor Unloader..........58
Dimensions..........14
Dirty Filter Contact Closure Input..........57
E-BUS Digital Room Sensor Wiring..........22
Economizer Control Signal..........58
Economizer Damper Actuator Wiring..........34
Emergency Shutdown Input..........57
Features and Applications..........5
Inputs..........20,21,57
(Outdoor Air Damper) Control Signal..........58
Outdoor Air Temperature Sensor Input..........57
Outputs..........58
Output Wiring..........21
Programming..........55
Proof of Flow Input..........57
RA CO
2
Sensor Wiring..........24
RH Level..........19
SCR or Modulating Hot Water/Steam Control Signal..........58
Space Temperature Sensor Slide Adjust..........57
Supply Air Temperature Sensor Input..........57
Supply Fan (Enable)..........58
Supply Fan VFD Control Signal..........58
Supply Fan VFD Signal Wiring..........33
Temperature Range..........19
User-Con
fi
gurable Relays..........58,60
Wiring..........20,21
VCB-X Controller Inputs & Outputs..........56
VCB-X Controller Input Wiring..........20
VCB-X Controller Output Wiring..........21
VCB-X EM1 Expansion Module..........8
Building Pressure Control Signal..........60
Building Static Pressure Sensor Input..........59
Condenser Fan VFD Signal..........60
Condensor Water Valve Signal..........60
Dimensions..........15
Entering Water Temperature Sensor Input..........59
Head Pressure Transducer Input..........59
Hood On Input..........59
Inputs and Outputs..........59
Leaving Water Temperature Sensor Input..........59
Modulating Cooling Stage Signal..........60
Remote Forced Occupied Mode Input..........59
Return Air Sensor Input..........59
Water Proof of Flow Input A..........59,60
Wiring..........36,37
VCB-X EM2 Expansion Module..........8,60
Dimensions..........16
Inputs and Outputs..........56,60
Output Wiring..........49
Wiring..........47,48
Ventilation Mode..........65
Vent Mode..........62
VFD..........33
VFD Supply Fan..........6
Voltage Proper..........54
Voltage and Environment Requirements..........19
W
Wall Mounted E-BUS CO
2
Sensor..........23
Warm-Up Mode..........62
Water Cooled Condenser..........46
Water Proof of Flow Input..........59,60
Water Source Heat Pump Operation..........72
Water Source Heat Pump Safety Monitoring..........73
Water Temperature Sensor..........10
WattMaster Aspiration Box Assembly..........24
WDOG LED..........78
Wet Contacts..........21,37,47
Wire Belden #82760..........19
Wire Size
18-gauge..........19
Minimum for 24 VAC..........19
Wiring
12-Relay Expansion Module..........50
18-gauge..........19
24-gauge..........19
24 VAC-to-24 VAC..........54
Building Pressure Control Output..........44
Building Static Pressure Sensor..........42
Chilled Water Valve Actuator..........45
Condenser Fan ECM Motor and Condenser Fan VFD..........46
Condenser Water Valve Actuator..........46
Digital Compressor Discharge Temperature Sensor..........31
Digital Compressor Unloader..........32
Duct Mounted CO
2
Sensor..........24
EBTRON Air Flow Measurement Digital Transmitter..........51
E-BUS 12-Relay Expansion Module..........50
E-BUS CO
2
Wall-Mounted Sensor..........23
U-V
