Issue
When using a STR-150 room stat with the TAC Xenta 121-FC/HP, the effective occupancy signal output defaults to the Y1 output in ZBuilder. Y1 is the only analog output on the Xenta 121-FC/HP so this creates a conflict if an analog valve is being controlled
Product Line
TAC Vista
Environment
- TAC Xenta 121-FC/HP
- STR-150
- ZBuilder
Cause
In order to activate the effective occupancy signal to the STR-150 room stat, the Hardwired status LED option must be selected. This can be found under the Configuration tab > Connected devices > Room unit in ZBuilder. When this is selected, it places the output on Y1 by default.
Resolution
In ZBuilder, it is possible to move the effective occupancy signal named "Status LED" from the default location on Y1 to K1 through K4. If a K output is used then a 5 Volt DC external power supply will be required. Place the 5 Volts DC on KC and land the mode wire from the STR-150 on one of the K outputs. It is recommended that K4 be used because it does not share a common with the other K outputs. This way K1, K2, and K3 are free to be used for other things.
