Wattsun AZ-225 Installation Manual page 24

5.2) MOUNTING THE REMOTE SENSOR
MOUNT THE REMOTE SENSOR ON THE TOP OF THE ARRAY
The sensor mounts on the TOP CENTER (or near the center) of the PV array. Most modules already
have a hole in the frame that you can use. If your modules do not have an "end hole" then you will need to
drill a 1/4" hole in the frame to mount the sensor. Slip a thin piece of wood between the module frame and
the back of the module. The wood "spacer" will keep you from inadvertently digging your drill bit into the
back of the module once you have drilled through the frame.
If the modules in your array mount in "landscape" format and you have aluminum "endcaps" at the top and
bottom of the array, then use the endcap mounting bolt and a strut near the center of the tracker. Make sure
that the sensor has a clear view of the sky.
The wire coming from the sensor has a molded connector. It mates into the bottom of the controller. The
controller connector has a grove inside to properly align the mating pieces. Match up the "tongue and
groove" of both connectors, push them together and twist the locking ring to secure the connection.
THE V3.3 SENSOR ORIENTATION IS DIFFERENT FROM THE EARLIER V3.x VERSIONS!
The sensor needs to be above the plane of the array and have a
clear view to the sky. Do not crowd it against the array or module
frame. If the "eyes" don't have the freedom to see the sun then
the tracker will behave oddly. The sensors function is to make
sure that equal amounts of light fall on all four sides.
Be careful not to damage the clear sensor on top. It's function
controls "return to the east" at night.
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