Cutaway heat recovery unit and centrifugal fans on the SIT ventilation wall

Photo: Mariusz Młynarczyk / CloudAir.tech

Close view of the SIT ventilation display, where a heat recovery unit is shown with its front removed to reveal the fan, filter and control board under the heading "HRU powered by SIT". Two centrifugal fans, an electronic control board and a screen are mounted on the green wall beside it.