Trane Tracer Unit Ventilator, ZN.520 Configuration, Setpoint defaults, Default, Valid range, 40 F

Models: Tracer Unit Ventilator ZN.520

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Table 15: Setpoint defaults

Configuration

Setpoints

Table 15: Setpoint defaults

 

 

 

 

 

Setpoint

Default

Valid range

 

 

 

Occupied heating setpoint

71°F

40 to 115° F

Occupied cooling setpoint

74°F

40 to 115° F

Occupied standby heating setpoint

67 °F

40 to 115° F

Occupied standby cooling setpoint

78 °F

40 to 115° F

Unoccupied heating setpoint

60°F

40 to 115° F

Unoccupied cooling setpoint

85°F

40 to 115° F

Heating setpoint low limit1

40°F

40 to 115° F

Cooling setpoint low limit1

40°F

40 to 115° F

Heating setpoint high limit 1

105 °F

40 to 115° F

Cooling setpoint high limit 1

110 °F

40 to 115° F

Thumbwheel setpoint

Enable

Disable or enable

 

 

 

1.The heating and cooling setpoint high and low limits only apply to the occupied and occupied standby setpoints and are never applied to the unoccupied setpoints.

Discharge Air Limits

Table 16: Discharge air limit ranges

 

 

 

 

 

 

Default

Valid range

 

 

 

Low limit 1

38 °F

30 to 50°F

Control point high limit2

150 °F

38 to 150°F

Control point low limit2

45 °F

35 to 150°F

 

 

 

1.The low limit is the temperature at which the controller shuts down the unit to prevent the coil from freezing.

2.The control algorithm is limited to calculating this discharge air temperature based on capacity request.

Freeze Avoidance

Table 17: Freeze avoidance setpoint range

 

 

 

 

 

 

Default

Valid range

 

 

 

Freeze avoidance setpoint1

40 °F

20 to 60° F

 

 

 

The controller disables freeze avoidance when the outdoor air temperature rises 3 °F above the freeze avoidance setpoint.

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Trane Tracer Unit Ventilator Configuration, Setpoint defaults, Default, Valid range, Discharge air limit ranges, 40 F