AMX ENV-VST-C - Manual (Page 12)

Installation and Wiring
6 ViewStat Color Communicating Thermostat
Wiring Terminals
ViewStat Color Communicating Thermostats are equipped with terminals RC, RH, C, Y, W, G, O, B, S1,
S2, L1, L2, L3, and L4. You can use terminals S1 and S2 to accommodate a remote temperature sensor
(see the Installing a Remote Sensor section on page 14 for more information). Terminals L1-L4 connect
to the AxLink cable. The remaining terminals are used to control various types of heating and cooling
systems detailed in the following sections. FIG. 1 displays the layout of the terminals on the thermostat’s
motherboard.
FIG. 1 Terminal Layout