Wiring for power
TruVu™ VAVB3-E2 CARRIER CORPORATION ©2022
Installation and Start-up Guide All rights reserved
15
To wire for power
1 Remove power from the power supply.
2 Remove the TV-VAVB3-E2's cover.
3 Pull the red screw terminal connector from the controller's power terminals labeled 24V.
4 Connect the power supply's wires to the red screw terminal connector.
5 Connect an 18 AWG or larger wire from the power supply's negative (-) terminal to earth ground. This wire
must not exceed 12 in. (30.5 cm).
6 Apply power to the power supply.
7 Measure the voltage at the red screw terminal connector to verify that the voltage is within the operating
range of 20.4 to 28.8 Vac or 21.6 to 28.8 Vdc.
8 To verify the polarity of the wiring, measure the voltage from the negative terminal of the red screw terminal
connector to a nearby ground. The reading should be 0V.
9 Insert the red screw terminal connector into the controller's power terminals.
10 Verify that the LED on top of the controller is on.
To Next Page
Loading...
