Catalogue

40 CAB-PRC001-EN
Controls
triac signal from the controller, which determines the valve position by a control algorithm. If the
valve loses power, it remains in the position that it was in when the power loss occurred. All control
valves are factory installed in the leaving water piping downstream of the hydronic coil.
Field-Supplied Valves; Model Number Digits 27 and 28 = X, Y, Z or 1.
When using field-supplied valves, this option allows the controller to be factory-configured for the
normal position of the field-supplied valve.
Note: Trane does not recommend wild coil applications.
Two-Position Fresh Air Damper Actuator; Model Number Digit 13 = D, E, or F
(Available with all control options except Tracer ZN520)
This damper actuator uses a 24 V signal and is factory-wired and mounted to the damper assembly.
It allows zero to 50 percent fresh air. The damper will drive open to an adjustable mechanical stop-
position whenever the fan is running during occupied mode and will spring-return closed when the
fan turns off.
CAB-PRC001-EN.book Page 40 Tuesday, May 8, 2012 10:11 AM