Trane Tracer ZN.520 Manual page 6

iv
Contents
On/Cancel buttons....................................................................... 34
Communication jack .................................................................... 34
Zone sensor wiring connections ................................................. 35
Communications ................................................................ 36
Power................................................................................... 37
Input/output summary ...................................................... 38
Sequence of operation........................................................39
Power-up sequence .................................................................... 40
Setpoint operation ....................................................................... 40
Setpoint selection........................................................................ 40
Occupied and unoccupied operation ........................................... 43
Occupied mode ........................................................................... 43
Unoccupied mode ....................................................................... 43
Occupied standby mode ............................................................. 44
Occupied bypass mode ............................................................... 44
Occupancy sources ..................................................................... 45
Determining the occupancy mode .............................................. 45
On and Cancel buttons on the zone sensor ................................ 47
Occupancy binary input ............................................................... 47
Modulating/Cascade control ........................................................ 48
Heating or cooling control mode operation ................................. 49
Heating and cooling changeover logic ......................................... 50
Cooling operation ........................................................................ 52
Heating operation ........................................................................ 53
Coil changeover ........................................................................... 54
Entering water temperature sampling function........................... 55
Fan operation............................................................................... 56
Exhaust fan/damper operation .................................................... 59
Valve operation ............................................................................ 59
Two-position damper operation................................................... 62
Modulating outdoor air damper operation ................................... 63
Face and bypass damper operation............................................. 65
DX operation................................................................................ 66
Electric heat operation................................................................. 66
Output overrides ......................................................................... 66
Fan status .................................................................................... 67
Filter status ..................................................................................67
Data sharing ................................................................................ 68
Other modes ............................................................................... 68
CNT-SVX04A-EN