Innotech Omni C20 - Figure 3-22: PTC Sensor Wiring Examples

Omni Installation Instructions
Page 52 © Mass Electronics Pty Ltd 2017Edition 1.2 dated 20.08.2018
3-4.6.11 PTC Sensor Wiring
The Omni Controller currently only supports PTC Sensors in 2 Wire mode. If using 3 or 4 wire PTC
sensors, they can be wired as below:
•3 wire PTC Sensor
à UIO+: 2 common wires
à UIO-: single wire
•4 wire PTC Sensor
à UIO+: 2 common wires
à UIO-: 2 common wires
Figure 3-22: PTC Sensor Wiring Examples
+
-
Omni
UIO
+
-
2 Wire
Sensor
+
-
Omni
UIO
+
-
3 Wire
Sensor
+
+
-
Omni
UIO
+
-
4 Wire
Sensor
+
-