Ortech Y-H2 Operation & Installation Instructions page 23

Installation (Vent inside)
If you do not have an outlet to the outside, exhaust pipe is not required, and the installation
is similar to the one show in section "
Activated carbon filter can be used to trap odours.
In order to install the activated carbon filter, the grease filter should be detached first.
Press the lock and pull it downward.
Plug the activated carbon filter into the unit and turn it in clockwise direction. Repeat the
same on the other side.
NOTE:
o Make sure the filter is securely locked. Otherwise, it would loosen and cause
dangerous.
o When activated carbon filter attached, the suction power will be reduced.
Installation (Vent outside)
23
".