WattMaster Auto-Zone Plus, Design, Installation And Operation

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Section 4 Auto-Zone Plus
4-42 Start-Up and Troubleshooting
AUX1 - Connect the Room Sensor Slide Adjust to this input if used.
AUX2 - Spare input for future applications.
GND - Common return wire
3.2.4 RS-485 Communications Connector
This connector provides the connection point for the Local Loop RS-485
communications loop. The wiring consists of a twisted pair of wires with a shield.
T - RS-485 (+) Communications terminal
SHLD - Common return wire, this point is tied to GND on the Zone Controller.
R - RS-485 (-) Communications terminal
3.2.5 Airflow Sensor Input Jack
This four pin modular jack is used to connect the optional airflow sensor for pressure
independent applications. The Zone Controller automatically senses the airflow sensor
when it is connected.
+5V - This wire provides power to the sensor
SIG - This wire carries the 0-5V signal from the pressure sensor. The signal is
proportional to the velocity pressure.
GND - Common return wire, this point is tied to GND on the Zone Controller
3.2.6 Relay Expansion Board Jack
This eight pin modular jack is used to connect the optional relay expansion board. The
Relay Expansion Board is used in applications requiring fan powered boxes or auxiliary
heat at the zone. The Zone Controller automatically senses the Relay Expansion Board
when it is connected.
3.2.7 Damper Actuator Jack
This six pin modular jack is used to connect the zone damper actuator.
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