Catalogue

UV-PRC004-EN 45
Controls
Tracer ZN520 Zone Controller
Features Include
• Automatic fan-speed reset
• Automatic ventilation reset
• Active dehumidification
• Manual output test
• Filter maintenance
• Master slave
• Water valve override
• Freeze avoidance
• Interoperability
• Three generic I/O ports
The Tracer ZN520 is a factory-installed, -tested and -commissioned LonTalk
®
control designed to
provide control of the classroom unit ventilator and the fan-coil products (see Figure 12).
The Tracer ZN520 controller is designed to be used in the following applications:
• As part of the Trane Tracer Summit™ building automation system, the Tracer ZN520 becomes
an important part of the Trane Integrated Comfort™ system (ICS).
• The Tracer ZN520 can function as a completely standalone controller in situations where a
building automation system (BAS) is not present.
• For situations when a non-Trane BAS is present, the Tracer ZN520 can be used as an
interoperable unit controller.
Through building management of the HVAC system, optimizing energy consumption becomes
possible at a classroom level. Each unit is capable of functioning independently of one another
during occupied and unoccupied hours of the day. This allows the temperature setpoint and
ventilation setting to be changed automatically based on classroom usage (see Figure 13, p. 46).
Figure 12. Tracer ZN520 control board
Tracer ZN520
UV-PRC004-EN.book Page 45 Monday, February 4, 2013 11:01 AM