The Pumani unit should be located as close to the patient as possible. It should be kept at waist height or above, so that users can easily view the flow settings, pressure level, and indicator light to make sure the unit is functioning correctly. It should be placed on a level surface near the patient (not on an uneven surface where there is a risk of the unit falling on the patient). It should NOT be hung from an IV pole or other fixture. You can stack up to two units on top of each other, as long as there is no risk of either unit falling.