Changeover option

The temperature of the pipe at the coil input must be detected by the PLC so that the coil can operate in both heating and cooling mode. The changeover sensor for this process is supplied in a disassembled state.

The sensor has to be mounted in the position shown in the illustration on the installation.

The system must be set up with a 3-way valve. 2-way valves should not be used.

For installation, place the sensor on the pipe and attach the chain as shown in the illustration.

The sensor cable must be connected to terminals C and 2 as shown in the illustration below.

The cable in the reel is fed through a suitable cable gland. It is connected to terminals 7-8 in terminal block TB8. The order of the cables does not matter.