User manual

Installation

6. Carefully align the keyhole on the TriStar MPPT with the screw head. Slide the TriStar MPPT

down over the keyhole.

7. Check for vertical plumb with a level.

8. Mark two (2) mounting hole locations in the wiring box.

9. Remove the controller and drill 3/32” (2.5 mm) holes at the drill marks.

10. Carefully align the keyhole on the TriStar MPPT with the screw head. Slide the TriStar MPPT

down over the keyhole.

11. The pre-drilled pilot holes should align with the mounting holes in the wiring box. Secure the

controller with two (2) #10 mounting screws.

12. Tighten the keyhole screw.

Step 4 - Adjust Settings Switches

Switch 1: Reserved for Future Use

Settings switch 1 should remain in the “OFF” position.

Mode Switch 1

Solar Charging OFF

future use ON

Switches 2 & 3: System Voltage

Four (4) system voltage conﬁ gurations are available as shown in the table below:

System Voltage Switch 2 Switch 3

Auto OFF OFF

12 OFF ON

24 ON OFF

48 ON ON

The “auto” setting allows the TriStar MPPT to detect the system voltage automatically on start up.

The test is only performed at start up and the detected system voltage will never change during

operation.

Generally, it is best to choose a speciﬁ c system voltage. The auto detect feature should only be

used in situations where the system voltage is unknown ahead of time or in systems where the

system voltage may change periodically.