ii
CNT-SVX05A-EN
Contents
Outdoor air temperature ................................................................... 18
Mixed air temperature ...................................................................... 18
Duct static pressure.......................................................................... 18
On/cancel buttons............................................................................. 19
Zone sensor
.......................................................................................20
Space temperature measurement .................................................... 20
Zone sensor setpoint adjustment ..................................................... 20
Fan mode switch .............................................................................. 22
On/cancel buttons............................................................................. 22
Zone sensor communication jack ..................................................... 22
Service pin message request............................................................ 22
Zone sensor wiring connections ....................................................... 23
Communications
.............................................................................24
Device addressing............................................................................. 24
Wire characteristics .......................................................................... 25
Link configuration and termination.................................................... 25
Termination resistance placement for Comm5 links ........................ 26
Recommended wiring practices ....................................................... 27
Power
..................................................................................................28
Input/output summary
..................................................................29
Sequence of operation
..................................................................30
Power up sequence .......................................................................... 31
Space temperature setpoint operation ............................................. 32
Space temperature setpoint selection .............................................. 32
Occupied and unoccupied operation................................................. 34
Occupied mode................................................................................. 34
Unoccupied mode............................................................................. 35
Constant volume space temperature control ......................... 35
Constant volume discharge air or variable air volume control 35
Occupied standby mode ................................................................... 35
Occupied bypass mode .................................................................... 36
Occupancy sources........................................................................... 36
Determining the occupancy mode.......................................... 36
On and Cancel buttons on the zone sensor...................................... 37
Occupancy binary input..................................................................... 38
Constant volume space temperature control.................................... 38
Control gains........................................................................... 39
Heating or cooling control mode operation............................. 39
Cooling operation .................................................................... 41
Heating operation ................................................................... 42
Constant volume discharge air temperature control......................... 42
Heating or cooling control mode operation............................. 44
