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Wiring inputs and outputs
TruVu™ VAVB3
-E2
CARRIER CORPORATION ©2022
Installation and Start-up Guide
All rights reserved
26
Wiring specifications
Input wiring
Input
Maximum length
Minimum gauge
Shielding
Thermistor
Dry contact
1000 feet
(305 meters)
22 AWG
Shielded
0
–
5 Vdc
0
–
10 Vdc
1000 feet
(305 meters)
26 AWG
Shielded
Pulse counter
TLO
1000 feet
(305 meters)
22 AWG
Shielded
Output wiring
To size output wiring, consider the following:
•
Total loop distance from the controller to the controlled device
NOTE
Include the total distance of actual wire. For 2-conductor wires, this is twice the cable length.
•
Acceptable voltage drop in the wire from the controller to the controlled device
•
Resistance (Ohms) of the chosen wire gauge
•
Maximum current (Amps) the controlled device requires to operate