Insulation Work 
Installation  83 
3.1.7 Change the air inlet direction 
① Take off ventilation panel and flange, cut off the staples at side rail. 
 
 
② Stick the attached seal sponge as per the indicating place in the following fig, and then change the 
mounting positions of air return panel and air return flange . 
 
 
③  When install the filter mesh, please plug it into flange inclined from air return opening, and then push up. 
 
 
④  The installation has finish, upon filter mesh which fixing blocks have been insert to the flange positional 
holes.