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Tracer
®
ZN.010
and ZN.510
44 UNT-IOM-6
The zone sensors available with the Tracer
®
ZN.010 and ZN.510
provide up to three different inputs
1. Space temperature measurement (10K thermistor)
2. Local setpoint
3. Fan mode switch
Wall mounted zone sensors include a thermistor as a component of
the internal printed circuit board. Unit mounted zone sensors use a
sensor placed in the units return air stream.
Each zone sensor is equipped with a thumbwheel for setpoint
adjustment.
The zone sensor may be equipped with a fan mode switch. The fan
mode switch offers selections of off, low, medium, high, or auto.
Reference Table 8 on page 45 for fan mode operation.
Zone Sensors
Fan Mode Switch
Table 7. Analog Inputs Available
Analog Input Description Application
Zone Space temperature Space temperature detection
Set Local setpoint Thumbwheel setpoint
Fan Fan mode input Zone sensor fan switch
Analog input 1 (AI1) Entering water temperature Entering water temperature detection
Analog input 2 (AI2) Discharge air temperature Discharge air temperature detection
Notes:
1.The zone sensor, entering water temperature sensor, and the discharge air temperature sensor are
10KW thermistors. Figure 26 on page 38 provides the resistance-temperature curve for these
thermistors.
2. Zone Sensor:
Wall mounted sensors include a thermistor soldered to the sensors circuit board
Unit mounted sensors include a return air sensor in the units return air stream.
3. Changeover units include an entering water temperature sensor.
Analog Inputs
Both Tracer
®
ZN.010 and ZN.510 accept a maximum of five analog
inputs. Reference Table 7.