In what direction and orientation should I install the Control?

The Control unit must be installed such that the direction of water flow in the pipe matches the direction of the arrow on the bottom of the unit. If you're looking at the top of the Streamlabs Control unit such that the words "open" and "close" are upright and read left to right, the water in the pipe should flow from the left of the unit to the right of the unit. 

 

 

The Control can be installed either horizontally or vertically as long as it is installed in the correct orientation with respect to flow direction as shown above.