Catalogue

42 UNT-PRC001-EN

Controls

The control interface is intended to be used with a field-supplied, low-voltage thermostat or

controller. The control box contains a relay board which includes a line voltage to 24-volt

transformer, quiet contactors (for electric heat units), and an optional disconnect switch. All end

devices are wired to a low-voltage terminal block and are run-tested, so the only a power

connection and thermostat connection is needed to commission the unit. Changeover sensors and

controls are provided whenever a change-over coil is selected. When N.O. valves are selected,

inverting relays are provided for use with standard thermostats.

The CSTI adapter board provides all the hookups of the standard adapter board, but in addition,

provides hookups for valve control (main and auxiliary coils), electric heat control, and damper

control. Screw terminal blocks provide convenient access to fan controls and to end device control.

In addition, a courtesy 10-Vdc supply is provided for use with an external potentiometer or rheostat.

The 10-Vdc supply supports up to 10 mA draw.

Tracer Controls

The Tracer family of controllers, ZN010, ZN510, ZN520, and UC400 offer the combined advantages

of simple and dependable operation with the latest Trane-designed controller. Standard control

features include options normally available on more elaborate control systems. All control options

are available factory-configured or can be field-configured using Rover service software, the UC400

is services via Tracer TU. For more detailed information, refer to CNT-IOP-1 (for Tracer ZN010 or

ZN510) or CNT-SVX04A-EN (for Tracer ZN520), or the most recent version of the publication.

Tracer ZN010, Model Number Digit 30 = E

Tracer ZN010 is a stand-alone microprocessor controller.

Figure 7. CSTI adapter board field connections

1. VSP 10V

2. VSP 0–10V

3. VSP DC COM

1. 24 Vac Y (hot)

2. 24 Vac Y (gnd)

3. High

4. Medium

5. Low

6. V1Op/Cooling

7. V1C1 (not std)

8. Not used

9. Not used

10. V2Op/EH1St/Heating

11. V2C1/EH2St (not std)

12. Damper Open

13. Dmp Cl (not std)

321

1098 765432

Figure 8. Tracer ZN010 control board

UNT-PRC001-EN.book Page 42 Tuesday, May 8, 2012 10:54 AM