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Wiring for power
WARNING Do not apply line voltage (mains voltage) to the controller's ports and terminals.
CAUTIONS
•
The TV-PSM is powered by a Class 2 power source. Take appropriate isolation measures when mounting it in
a control panel where non-Class 2 circuits are present.
•
Carrier controllers can share a power supply as long as you:
•
Maintain the same polarity.
•
Use the power supply only for Carrier controllers.
To wire for power
Make sure the TV-PSM's power switch is in the OFF position to prevent it from powering up before you can
1
verify the correct voltage.
Remove power from the power supply.
2
Pull the red screw terminal connector from the controller's power terminals labeled 24 Vac/Vdc (+/-).
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 to 30 Vac or 23.4 to 30 Vdc.
Insert the red screw terminal connector into the controller's power terminals.
8
To verify the polarity of the wiring, measure the voltage from the negative terminal of the red screw terminal
9
connector to a nearby ground. The reading should be 0V.
10 Turn on the expander's power switch.
11 Verify that the
12 Measure the voltage at the red screw terminal connector to verify that the voltage is within the operating
range of 20 to 30 Vac or 23.4 to 30 Vdc.
TruVu™ ChillerVu™ Plant Controller
Installation and Start-up Guide
LED on top of the controller is on.
15
Wiring for power
©2022 Carrier.
All rights reserved.
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