The Tigo TAP and Gateway facilitate communication between the Cloud Connect Advanced and the TS4 module electronics. They are normally mounted to the frame of one of the PV modules in the array. This may not be possible, for example with frameless modules. In such cases, the TAP or Gateway can be mounted to racking or other nearby structures. The screw holes in the mounting bracket are intended for this purpose. See below.
No matter how you mount the TAP or Gateway, it is important that the wire glands (where the communication cable exits the enclosure) are pointing downward and not upward. This will prevent water seeping in through the glands. The unit should also be mounted with the Tigo logo facing you, so it is clear that the input wire is on the left, and the output wire is on the right. See below.
Direction and Signal Strength
It also matters which way the TAP is pointing. It's signal is stronger to the front and sides than it is from the back.
For example, if you mount the TAP on racking with the glands facing downward, you should orient the front and sides of the TAP toward the TS4 units, not the back. Here is another illustration of this: