ETC Echo Light Sensor - Manual (Page 7)

E T C I n s t a l l a t i o n G u i d e
Echo™ Light Sensor
Page 7 of 12 Echo Light Sensor Installation Guide
Step 5: Orient the smooth side of the mounting plate to the ceiling tile. Pull the
following wires from the junction box through the provided holes of the
mounting plate:
• EchoConnect bus wires or EchoConnect pigtail and ESD ground wires
depending on the installation.
• Remote Light Sensor Head wires (if remotely mounting Light Sensor
Heads).
Step 6: Align and insert the soft ceiling tile adapter through the holes provided
on the mounting plate, poke the tines of the adapter through the ceiling
tile, then bend each tine over in opposite directions for a secure fit on
the back side of the ceiling tile.
Step 7: Strip each wire 5/16” (8mm) and terminate the EchoConnect (white
and black wires) and ground wire (green/yellow) to the EchoConnect
terminal block located on the sensor controller. Torque each
termination to 3.1-3.5 in-lb.
a: Terminate the white incoming wire to the data + terminal.
b: Terminate the black incoming wire to the data - terminal.
c: Terminate the green/yellow (ground) wire to the labeled ground
terminal.
Installing the Light Sensor Heads Remotely (optional)
Step 1: Prepare a hole in the Sensor Head installation location (3/4” hole
without adapter or 1” with adapter).
Step 2: Run Belden 8471 (or equivalent) between the controller and the Light
Sensor Head installation location.
Step 3: For a Soft ceiling tile installation, pull the Light Sensor Head wire
leads through the thread extender, then attach the thread extender
onto the Light Sensor Head.
Step 4: Insert the Light Sensor Head through the prepared installation
location. This should be done from the finished side of the installation
location to the unfinished side (ceiling).
Installed with
thread extender Installed without extender
Two Light Sensor Heads may be
connected to the controller and
installed remotely.
Each Light Sensor Head must be
separately wired to the controller using
no more than 1000 feet (304m) of 16
AWG wire total per controller. These
wire runs must remain separate from
EchoConnect wiring. ETC
recommends using Belden 8471 (or
equivalent) wire.