Trane Zone Controller, N512, CNT-SVX07C-EN manual Damper actuators, Zone humidity sensor, CO2 sensor

Additional components

Table 1. Tracer zone temperature sensor options

Timed

Fan

Zone

override

BAS

buttons

Comm

order

Use

number

Setpoint

jack

Temperature

High

Med

Low

Auto

Off

thumb-

On

Cancel

sensor

wheel

4190 1087

Any

x

4190 1088

Any

x

x

x

x

4190 1090

Any

x

x

x

x

x

4190 1094

Any

x

x

x

4190 1095

Unit

x

x

x

x

x

x

x

x

ventilator

4190 1115

Fan coil

x

x

x

x

x

x

x

x

x

x

4190 1116

Unit

x

x

x

x

x

x

x

x

x

ventilator

4190 1117

Any

x

x

x

x

x

x

x

returns the valve to normally open or closed (dependent on the desired default position). For modulating valve control, use tri-state modulating actuators with or without a spring return, as required by the application.

Damper actuators

Damper actuators cannot exceed 12 VA draw at 24 Vac. For control of out- door/return air dampers, use tri-state modulating actuators that incorpo- rate a spring return.

Zone humidity sensor

For measurement of relative humidity (RH), the Tracer ZN521 requires a zone humidity sensor with a 4–20 mA output, where 4 mA is 0% RH and 20 mA is 100% RH. The controller provides 20 Vdc to power the zone humidity sensor.

CO2 sensor

For CO2 measurement, the Tracer ZN521 requires a CO2 sensor with a 4– 20 mA output, where 4 mA = 0 ppm and 20 mA = 2000 ppm.

CNT-SVX07C-EN 5