Installation, Operation and Maintenance manual
26
Downflo
®
Evolution
Inlet plenum
The inlet plenum is standard on Downflo
®
Evolution collectors unless another inlet
plenum option has been selected.
The inlet plenum directs the dirty air stream to the back of the dirty-air plenum over
the venturi section.
1. Remove the unit’s shipping cover plate. Remove excess sealant from opening.
2. Apply sealant around the opening toward the inside edge of the bolt pattern.
3. Align the holes on the inlet collar with the holes in the unit and secure using bolts
and flat washers supplied.
Figure 14: Inlet plenum
High Flow Inlet Plenum
The high flow inlet plenum is used in applications with higher flow rates. Please
contact application engineering.
The high flow inlet plenum is supplied with standard service access panels on the
front, back and top of the plenum.
The top access panel is available with and without an explosion vent.
