
Chapter 2
General wiring information
This chapter provides specifications and general information about wir- ing the Tracer ZN521 zone controller. The controller requires wiring for:
•Input/output terminals
•AC power to the controller
•
Input/output terminal wiring
All input/output terminal wiring for the Tracer ZN521 zone controller is application specific and dependant on the configuration of the controller. Input/output terminal wiring must meet the following requirements:
•All wiring must comply with the National Electrical Code and local codes.
•Use only 18 AWG,
•Binary input and output wiring must not exceed 1000 ft (300 m).
•Analog input wiring must not exceed 300 ft (100 m).
•Do not run input/output wires in the same wire bundle with any ac- power wires.
For
AC-power wiring
WARNING
HAZARDOUS VOLTAGE!
Before making line voltage electrical connections, lock open the supply- power disconnect switch. Failure to do so may cause death or serious injury.
CAUTION
Make sure that the 24 Vac transformer is properly grounded. Failure to do so may result in damage to equipment and/or personal injury.
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