UL De 30 Manual De Instrucciones Para La Instalación, El Uso Y El Mantenimiento página 9

Installing the blower to the plenum
Install four nylon insert nuts to the studs on the blower,
finger tighten until resistance is felt. Position the blower
discharge opening to match the ductwork. Slide the nuts
on the side of the blower housing into the four keyhole
openings on the side of the plenum and allow to slide
down into the slots. Using a wrench or ratchet from the
inside of the plenum tighten the nuts.
Figure 17B - 36" MODEL
ATTACH PLENUM TO THE COOKTOP
Installing the transition to the blower
Attach the transition to the outlet of the blower using
four screws. Tape the joint to seal.
Figure 19 - ATTACH BLOWER TO THE PLENUM
One screw per side
Wide Head Phillips Screws
Figure 18 - ATTACH TRANSMON TO THE BLOWER
9 Figure 20 - NUT LOCATIONS iNSiDE THE PLENUM