Distech Controls ECx-400 Series Installation Manual page 13

Typical Air Handling Unit Application Wiring Diagram
Fuse: 4A Max.
Transformer
Fast Acting
24VAC
Electrical
System
Ground
ECx-400
Figure 13: Typical Power and Network Connections
To To
Supply Return
Heat Cool
Fan Fan
Starter Starter
+ - + -
0-10 0-10
~ ~
VDC VDC
*
CT CT
* 249 ohm resistor built-in for inputs configured as 4-20mA
Damper Humidifier
+ - + -
0-10 0-10
~ ~
VDC VDC
Data Bus Shields: Twist together
and Isolate with electrical tape
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