To Wire For Power - Carrier TruVu VAVB3-E2 Installation And Startup Manual

To wire for power

Remove power from the power supply.
1
Remove the TV-VAVB3-E2's cover.
2
Pull the red screw terminal connector from the controller's power terminals labeled 24V.
3
Connect the power supply's wires to the red screw terminal connector.
4
Connect an 18 AWG or larger wire from the power supply's negative (-) terminal to earth ground. This wire
5
must not exceed 12 in. (30.5 cm).
Apply power to the power supply.
6
Measure the voltage at the red screw terminal connector to verify that the voltage is within the operating
7
range of 20.4 to 28.8 Vac or 21.6 to 28.8 Vdc.
To verify the polarity of the wiring, measure the voltage from the negative terminal of the red screw terminal
8
connector to a nearby ground. The reading should be 0V.
Insert the red screw terminal connector into the controller's power terminals.
9
10 Verify that the
TruVu™ VAVB3-E2
Installation and Start-up Guide
LED on top of the controller is on.
15
Wiring for power
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