WattMaster Auto-Zone Plus, Design, Installation And Operation

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Section 4 Auto-Zone Plus
4-28 Start-Up and Troubleshooting
COOL2 - (Y2) The Zone Manager will make the connection to the “R” terminal
when activating the second stage of cooling.
HEAT1 - (W1) The Zone Manager will make the connection to the “R” terminal
when activating the first stage of heating.
HEAT2 - (W2) The Zone Manager will make the connection to the “R” terminal
when activating the second stage of heating.
2.2.4 Economizer Connector
This connector carries a 0-10 volt control signal for the Economizer motor. The wiring
consists of two wires.
A1 - This analog output provides a 0-10 volt control signal, which modulates the
Economizer Damper motor position.
Warning:
This output must not be shorted to 24 VAC . The Economizer motor
must be powered from a separate isolated 24 VAC transformer to
avoid damaging the Zone Manager.
GND - Common return wire, this point is tied to GND on the Zone Manager.
2.2.5 Powered Exhaust Connector
This connector provides a normally open set of isolated contacts, which CLOSE when
the Economizer is driven open past its minimum position setpoint. The wiring consists of
two wires, which are interchangeable.
2.2.6 Static Pressure Sensor Connector
The Static Pressure Sensor may be connected to this terminal block. The sensor may
alternatively be connected via its modular plug to the Static Pressure Sensor modular
jack, located next to this connector. The Static Pressure Sensor wiring consists of three
wires.
+5V - (RED) This wire provides power to the sensor
SIG - (BLK) This wire carries the 0-5V signal from the pressure sensor. The
signal is proportional to the static pressure.
GND - (GRN) Common return wire, this point is tied to GND on the Zone
Manager.
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