Wolf 39239 Series Mounting Instructions page 23

KGXD - 170 - 1000 upright
Mount the central frame sections (2 pieces) again using the
existing bolts.
Position the bypass flap on the supports and bolt it on.
If there is an additional circulating air flap, also position this
according to the equipment sketches and bolt it on.
Warning: Pay attention to the position of the flaps
(see equipment sketch).
Fasten the dismounted intermediate stop rails and panels in
their previous positions again.
3062937_201508 23