Trinity
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Installation and Operation Instructions
Tft Series
56
Low Voltage Terminals
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“R” terminals 2 and 3 of the 24VAC I/O barrier has 24VAC
potential from the internal transformer. Do not connect power from this terminal to any
other terminal other than terminals 4, 5 and 6 (LIM, CH1 and CH2 (LL)). Failure to
follow these instructions may damage the unit.
The low voltage connections are divided into two separate barrier strips: Communication
and Sensor I/O (Input/Output) and 24VAC I/O.
DO NOT
connect 24VAC (or other
power supply) to the Communication and Sensor I/O connections; doing so will cause
control failure.
Figure 12-2 Low Voltage Field Wiring
24VAC I/O
Communication and Sensor I/O