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11. INSTALL THE BLOWER (INTERNAL)
The blower must be installed to the rough-in plate using (4) 3/8" screws for the single blower unit and (6) 3/8"
screws for the dual blower unit. Remove the cover from the blower assembly. Remove the impeller(s) by pulling
them out gently (see picture below).
Install screws into the location as shown in the pictures below (single blower or dual blower). Do not tighten
screws down fully, leave a 1/8" gap. Hang blower unit onto blower plate (screws through the large part of the
keyhole). Slide the blower to its position (screws in the small part of the keyhole). Tighten the screws. Reinstall
impeller(s) and cover. FOR DUAL BLOWER UNIT, MAKE SURE THE IMPELLERS ARE CORRECTLY
INSTALLED, THE HOOD WILL NOT WORK CORRECTLY IF REVERSED. Both impeller(s) are different in the
dual blower, one rotates clockwise and the other counterclockwise. Each wheel and motor have an arrow and a
number on them, you have to match them correctly. (see drawing below)
Single blower
Dual blower
FRONT
1
2
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